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Basler DECS-250, Instruction Manual

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9440300990 Rev J 

239 

DECS-250 

PROFIBUS Communication 

Table 38 shows the bit number of each parameter in instance 11 and an example packet returned from a 
DECS-250. Reading a value of 0xA4 06 (1010 0100 0000 0110) for instance 11 indicates that contact 
outputs 2, 5, 7, 9, and 10 are closed. The first byte is 1010 0100 and the second is 0000 0110. 

Table 38. Instance 11 Bit Order 

Instance 

Number 

Byte Number 

Bit Number 

Key Name 

Packet Returned from 

DECS-250 

11 

1 

0 

CONTACTOUTPUTS WATCHDOG 

0 

1 

CONTACTOUTPUTS OUTPUT1 

0 

2 

CONTACTOUTPUTS OUTPUT2 

1 

3 

CONTACTOUTPUTS OUTPUT3 

0 

4 

CONTACTOUTPUTS OUTPUT4 

0 

5 

CONTACTOUTPUTS OUTPUT5 

1 

6 

CONTACTOUTPUTS OUTPUT6 

0 

7 

CONTACTOUTPUTS OUTPUT7 

1 

2 

0 

CONTACTOUTPUTS OUTPUT8 

0 

1 

CONTACTOUTPUTS OUTPUT9 

1 

2 

CONTACTOUTPUTS OUTPUT10 

1 

3 

CONTACTOUTPUTS OUTPUT11 

0 

4 

0 (unused) 

0 

5 

0 (unused) 

0 

6 

0 (unused) 

0 

7 

0 (unused) 

0 

Setup 

The following steps are provided to assist in setting up the DECS-250 as a slave on a PROFIBUS 
network. Please refer to the documentation included with your PLC configuration software for installation 
and operation instructions. 
 

1. 

Download the DECS-250 GSD file from the Basler website: www.basler.com 

2. 

Using PLC configuration software, import the GSD file. This allows the DECS-250 to be included in 
the bus configuration as a slave. 

3. 

Assign a unique PROFIBUS address to the DECS-250. This allows the master to exchange data with 
the DECS-250. 

4. 

Select modules from the GSD file to be part of the data exchange. Selecting the cyclic parameters is 
recommended. The cyclic parameters are comprised of the first 12 instances in the PROFIBUS 
parameters table (Table 39). The first 25 parameters, which make up the first five instances, are float 
types. The next 59 parameters, which make up the last seven instances of cyclic parameters, are 
UINT8 types. 

5. 

Set each selected module to an address in the master's memory bank. 

6. 

Compile and download the configuration to the master before going online. 

 

When the PROFIBUS network is initialized, the master connects to each slave checking for address 
mismatches and sending configuration data. The configuration data is sent so that the master and slave 
agree on the data exchange to occur. Then, the master begins polling each slave in a cyclic order. 
 

Note 

It is not possible to write a portion of an instance by specifying a length 
smaller than the size of the instance. To modify a single parameter, 
read the entire instance, update the desired parameter, and write the 
entire instance back to the device. 

 

Summary of Contents for DECS-250

Page 1: ...INSTRUCTION MANUAL FOR DECS 250 Digital Excitation Control System Publication 9440300990 Revision J May 15 ...

Page 2: ......

Page 3: ...g caution and note boxes Each type is illustrated and defined as follows Warning Warning boxes call attention to conditions or actions that may cause personal injury or death Caution Caution boxes call attention to operating conditions that may lead to equipment or property damage Note Note boxes emphasize important information pertaining to installation or operation Note Be sure that the device i...

Page 4: ...lation operation or maintenance For terms of service relating to this product and software see the Commercial Terms of Products and Services document available at www basler com terms This publication contains confidential information of Basler Electric Company an Illinois corporation It is loaned for confidential use subject to return on request and with the mutual understanding that it will not ...

Page 5: ...THOUT ANY REPRESENTATION or WARRANTY or even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE Refer to the source code distribution for additional restrictions regarding warranty and copyrights For a complete copy of GNU GENERAL PUBLIC LICENSE Version 2 June 1991 or GNU LESSER GENERAL PUBLIC LICENSE Version 2 1 February 1999 refer to www gnu org or contact Basler Electri...

Page 6: ...iv 9440300990 Rev J Revision History DECS 250 ...

Page 7: ...rrent Reduction Module ICRM 9 Power Stage 11 Voltage and Current Sensing 13 Generator Voltage 13 Generator Current 13 Phase Sensing 13 Cross Current Compensation 14 Bus Voltage 15 Synchronizer 17 Generator Synchronization 17 Frequency Correction 17 Voltage Correction 17 Angle Compensation 18 Failure of Synchronization 18 Voltage Matching 19 Breaker Hardware Configuration 19 Breaker Failure 19 Gene...

Page 8: ...wer Factor Mode 34 Summing Type 34 Contact Inputs and Outputs 37 Contact Inputs 37 Start and Stop Inputs 37 Programmable Inputs 37 Contact Outputs 38 Watchdog Output 38 Programmable Outputs 38 Protection 41 Voltage Protection 41 Overexcitation Volts per Hertz 41 Generator Undervoltage 43 Generator Overvoltage 44 Loss of Sensing 44 Frequency Protection 45 Overfrequency 45 Underfrequency 46 Power Pr...

Page 9: ... 78 Network Load Share 79 Configurable Protection 79 Alarms 80 Real Time Clock 83 Auto Export Metering 84 Event Recorder 85 Sequence of Events Recording 85 Data Logging 85 Setup 86 Triggers 86 Trending 89 Power System Stabilizer 91 Supervisory Function and Setting Groups 91 Supervisory Function 91 Setting Groups 91 Theory of Operation 91 Speed Signal 93 Rotor Frequency Calculation 93 Generator Ele...

Page 10: ...able 125 Start BESTCOMSPlus and Activate DECS 250 Plugin Automatically 125 Manual Activation of the DECS 250 Plugin 127 Establishing Communication 128 Menu Bars 128 Upper Menu Bar BESTCOMSPlus Shell 128 Lower Menu Bar DECS 250 Plugin 130 Settings Explorer 130 Metering Explorer 130 Settings File Management 131 Opening a Settings File 131 Saving a Settings File 131 Upload Settings and or Logic to De...

Page 11: ...2 RS 485 Port 162 Ethernet Port 163 CAN Communication 163 Connections 164 Port Configuration 164 Remote Module Setup 164 Ethernet Communication 165 Ethernet Connection 165 PROFIBUS Communication 168 Configuration 169 Generator Field and Bus Ratings 169 Bridge 170 Sensing Transformer Ratings and Configuration 170 Generator PT 171 Generator CTs 171 Bus PT 171 Startup Functions 171 Soft Start 172 Fie...

Page 12: ... IP 197 Error Handling and Exception Responses 198 DECS 250 Modbus via Ethernet 198 Detailed Message Query and Response for RTU Transmission Mode 199 Read Holding Registers 199 Return Query Data 199 Restart Communications Option 200 Listen Only Mode 200 Preset Multiple Registers 200 Preset Single Register 201 Data Formats 202 Floating Point Data Format Float 202 Long Integer Data Format Uint32 202...

Page 13: ...50 Reboots Frequently 287 Support 287 Specifications 289 Operating Power 289 Control Power 289 Style LXXXXXX 289 Style CXXXXXX 290 Terminals 290 Generator and Bus Voltage Sensing 290 Terminals 290 50 Hz Sensing Voltage Nominal Input Range 290 60 Hz Sensing Voltage Nominal Input Range 290 Generator Current Sensing 290 Terminals 290 Accessory Inputs 291 Current Input 291 Voltage Input 291 Contact In...

Page 14: ... Level 296 Maximum Field Flash Time 296 Voltage Matching 296 On Line Overexcitation Limiting 297 High Current Level 297 Medium Current Level 297 Low Current Level 297 Off Line Overexcitation Limiting 297 High Current Level 297 Low Current Level 297 Sequence of Events Recording SER 297 Data Logging Oscillography 297 Environment 298 Temperature 298 Humidity 298 Salt Fog 298 Type Tests 298 Shock 298 ...

Page 15: ...nputs 315 Thermocouple Inputs 315 Analog Input Values 315 Analog Outputs 317 Maintenance 317 Firmware Updates 317 Contact Expansion Module 319 General Information 319 Features 319 Specifications 319 Operating Power 319 Contact Inputs 319 Contact Outputs 319 Communication Interface 319 Type Tests 319 Environment 320 UL Approval CEM 2020 and CEM 2020H 320 CSA Certification 320 CE Compliance 320 Phys...

Page 16: ...xiv 9440300990 Rev J Contents DECS 250 ...

Page 17: ...acking of a second DECS excitation setpoint Two PID stability groups with Auto Tune feature Remote setpoint control input accepts analog voltage or current control signal Real time metering Optional automatic synchronizer Optional integrated power system stabilizer PSS o Generator or motor control modes accommodates phase rotation changes between modes o Speed and power sensing or speed only sensi...

Page 18: ...r applications The DECS 250 controls the machine output through the application of regulated DC excitation power to the exciter field The level of excitation power is based on the monitored voltage and current and a regulation setpoint established by the user The operating mode generator or motor is changed on the Operating Mode settings screen Power factor and var metering values will be opposite...

Page 19: ...40 to 185 F Electrolytic Capacitor Considerations The DECS 250 contains long life aluminum electrolytic capacitors For a DECS 250 kept in storage as a spare the life of these capacitors can be maximized by energizing the device for 30 minutes once per year Refer to the energizing procedures provided in Maintenance When energizing the DECS 250 from a low impedance source such as a wall outlet use o...

Page 20: ...4 9440300990 Rev J Introduction DECS 250 ...

Page 21: ...l and consist of pushbuttons LED indicators and a liquid crystal display LCD Front Panel Illustration and Description DECS 250 controls and indicators are illustrated in Figure 2 and described in Table 1 The locators and descriptions of Table 1 correspond to the locators shown in Figure 2 Figure 2 Front Panel Controls and Indicators ...

Page 22: ...s type B USB jack connects the DECS 250 with a PC operating BESTCOMSPlus for local communication BESTCOMSPlus is supplied with the DECS 250 Caution In accordance with the guidelines defined in USB standards the USB port on this device is not isolated To prevent damage to a connected PC or laptop the DECS 250 must be properly tied to ground G Edit Pushbutton Pressing this button starts an editing s...

Page 23: ... the setting 5 Press the Edit button to save the change Display Setup BESTCOMSPlus Navigation Path Settings Explorer General Settings Front Panel HMI HMI Navigation Path Settings General Settings Front Panel HMI Front panel display appearance and behavior can be customized to meet user preferences and site conditions These BESTCOMSPlus settings are illustrated in Figure 4 LCD LCD setup includes a ...

Page 24: ... for blue characters on a white background C Sleep Mode Enable or disable D LCD Backlight Timeout Adjustable from 0 to 120 seconds in 1 second increments E Language Selection Select English Russian Spanish German or Chinese F Scrollable Metering Settings Select from main categories of GV Primary GC Primary CC Primary Frequency Power Primary PF Primary Energy Primary BV Primary Field Primary PSS Pr...

Page 25: ...nals L and N Operating Power Caution For redundant applications with a single phase 300 Hz Marathon PMG only one DECS 250 can be connected to the PMG at a time In redundant applications a contactor should be used for each DECS 250 power input or equipment damage may result If using 277 Vac operating power input the connection must be configured as L N single phase or equipment damage may result Op...

Page 26: ...e DECS 250 the use of the ICRM is recommended when using a low impedance source such as a wall outlet For a detailed description of the Inrush Current Reduction Module refer to Basler publication 9387900990 ICRM connections are illustrated in the Typical Connections chapter ...

Page 27: ...ating power is applied at terminals A B and C The GND terminal serves as a ground connection The DECS 250 power stage supplies excitation power by means of a filtered switching power module that uses pulse width modulation It is capable of supplying 15 Adc continuously at nominal voltages of 32 63 or 125 Vdc With nominal operating voltage applied it has a forcing capability of 30 Adc for 10 second...

Page 28: ...12 9440300990 Rev J Power Stage DECS 250 ...

Page 29: ... ABC or ACB Information about configuring the DECS 250 for the generator sensing voltage is provided in the Configuration chapter of this manual Typical generator voltage sensing connections are illustrated in Figure 5 Figure 5 Typical Generator Voltage Sensing Connections Generator Current Generator current sensing inputs consist of three phase sensing inputs and a sensing input for cross current...

Page 30: ...ommon load As shown in Figure 7 each generator is controlled by a DECS 250 using the DECS 250 cross current compensation input terminals CCCT and CCCT and a dedicated external current transformer CT to sense generator current The resistors shown in Figure 7 are used to set the burden and may be adjusted to suit the application Ensure that the power rating of the resistors is adequate for the appli...

Page 31: ... B2 and B3 This sensing voltage is typically applied through a user supplied voltage transformer but may be applied directly These terminals accept three phase three wire connections at terminals B1 A B2 B and B3 C or single phase connections at B3 C and B1 A The bus voltage sensing input accepts a maximum voltage of 600 Vac and has a burden of less than 1 VA The transformer primary and secondary ...

Page 32: ...16 9440300990 Rev J Voltage and Current Sensing DECS 250 ...

Page 33: ...or speed frequency from the bus frequency The Min Slip Control Limit setting C and Max Slip Control Limit setting D are used to calculate the slip frequency error and to provide continuous slip frequency control while in phase lock synchronization If the slip frequency magnitude is above the Max Slip Control Limit the error is set equal to the Max Error in the opposite polarity If the slip frequen...

Page 34: ... of zero degrees Only the metered bus angle is affected by the angle compensation setting the metered generator angle is not biased by the DECS 250 𝐺𝐺 𝐵𝐵 𝐴𝐴 𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆 𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴 Equation 1 DECS 250 Metered Slip Angle Where G metered generator angle B metered bus angle A angle compensation value Failure of Synchronization Generator synchronization is aborted if generator synchronization fails to occ...

Page 35: ...anged it is reflected in both places Voltage matching settings are illustrated in Figure 11 Figure 11 Voltage Matching Settings A Voltage Matching Select Enabled to enable function B Band Adjustable from 0 to 20 in 0 1 increments C Gen to Bus PT Match Level Adjustable from 0 to 700 in 0 1 increments Breaker Hardware Configuration BESTCOMSPlus Navigation Path Settings Explorer Synchronizer Voltage ...

Page 36: ...ured C Contact Type Select Pulse or Continuous D Breaker Closing Time Adjustable from 0 to 800 ms in 5 ms increments E Open Pulse Time Adjustable from 0 01 to 5 s in 0 01 s increments Setting is available only when Contact Type is Pulse F Close Pulse Time Adjustable from 0 01 to 5 s in 0 01 s increments Setting is available only when Contact Type is Pulse G Dead Bus Close Select Disabled or Enable...

Page 37: ...ickup and dropout settings for the duration of the stability activation delay Bus Condition A dead bus is recognized by the DECS 250 when the bus voltage decreases below the dead bus threshold I for the duration of the dead bus activation delay J A failed bus is recognized when the bus voltage or frequency does not meet the established stability criteria for the duration of the failed bus activati...

Page 38: ... and Dropout Adjustable from 46 to 64 Hz in 0 05 Hz increments G Generator Stability Underfrequency Pickup and Dropout Adjustable from 46 to 64 Hz in 0 05 Hz increments H Generator Stability Activation Delay Adjustable from 0 1 to 600 s in 0 1 s increments I Dead Bus Threshold Adjustable from 0 to 600 000 Vac in 1 Vac increments J Dead Bus Activation Delay Adjustable from 0 1 to 600 s in 0 1 s inc...

Page 39: ...re issued in the form of DECS 250 output contact closures These correction signals may be either continuous or proportional A When proportional correction is selected the correction pulses are of varying widths B and intervals C Initially long pulses are issued when the frequency difference between the generator and bus is large As the correction pulses take effect and the frequency difference bec...

Page 40: ...24 9440300990 Rev J Synchronizer DECS 250 ...

Page 41: ... AVR setpoint from one limit to the other is controlled by a Traverse Rate setting D These settings are illustrated in Figure 15 FCR When operating in FCR Field Current Regulation mode the DECS 250 regulates the level of current it supplies to the field based on the FCR setpoint E The setting range of the FCR setpoint depends on the field rated data and other associated settings FCR setpoint adjus...

Page 42: ...ngs J Min of rated Adjustable from 0 to 150 in 0 1 increments K Max of rated Adjustable from 0 to 150 in 0 1 increments L Traverse Rate Adjustable from 10 to 200 seconds in 1 second increments Var When operating in var mode the DECS 250 regulates the reactive power var output of the generator based on the var setpoint A The setting range of the var setpoint depends on the generator ratings and oth...

Page 43: ...05 increments H PF Lagging Adjustable from 0 5 to 1 in 0 005 increments I Traverse Rate s Adjustable from 10 to 200 seconds in 1 second increments J PF Active Power Level Adjustable from 0 to 30 in 0 1 increments Pre Position Setpoints Each regulation mode has three pre position setpoints which allow the DECS 250 to be configured for multiple system and application needs Each pre position setpoint...

Page 44: ...rolled by a voltage setpoint boosting level D a clearing voltage threshold E and a clearing voltage delay F The setpoint boosting level is expressed as a percentage above the AVR setpoint Transient boost is disabled once the line voltage recovers above the clearing voltage threshold The clearing voltage threshold is expressed as a percentage below the AVR setpoint The clearing voltage delay determ...

Page 45: ...oss current compensation gain setting D which is expressed as a percentage of the system nominal CT setting Application information about cross current compensation is available in the Voltage and Current chapter of this manual Network Load Sharing In a multiple generator application the load sharing function ensures equal generator reactive power sharing It operates in a similar manner to cross c...

Page 46: ...Drop Value LDValue Line drop value per unit Vavg Average voltage metered value per unit LD Line Drop 100 Iavg Average Current metered value per unit Ibang Angle of phase B current no compensation The LDValue is the per unit value seen down the line from the synchronous machine Equation 3 is used to determine the voltage needed to adjust for line drop 𝑉𝑉𝑎𝑎𝑎𝑎𝑎𝑎𝑎𝑎𝑎𝑎𝑎𝑎 𝑃𝑃𝑃𝑃 𝑉𝑉𝑟𝑟𝑟𝑟𝑟𝑟 𝑃𝑃𝑃𝑃 𝐿𝐿𝐿𝐿𝑉𝑉𝑉𝑉𝑉𝑉𝑉𝑉𝑉...

Page 47: ... Time Constant Adjustable from 0 to 1 in increments of 0 01 I Load Share Washout Filter Gain Adjustable from 0 to 1 000 in increments of 0 01 J Load Share ID Adjustable from 1 to 16 in increments of 1 K Line Drop Compensation Enable Place a check in the checkbox to enable line drop compensation L Line Drop Compensation Adjustable from 0 to 30 in increments of 0 1 Autotracking BESTCOMSPlus Navigati...

Page 48: ...sfer provisions between DECS 250 controllers The secondary DECS 250 can be configured to track the primary DECS 250 setpoint Proper redundant excitation system design allows for removal of the failed system Note Periodic testing of the backup system must be performed to ensure that it is operational and can be placed in service without warning Like internal tracking external setpoint tracking uses...

Page 49: ...this manual Limiter Scaling When the auxiliary control input is configured for limiter scaling the stator current limiter SCL and overexcitation limiter OEL low level values can be automatically adjusted Automatic adjustment of the SCL and OEL is based on six parameters signal and scale for three points The signal value for each point represents the accessory input voltage The scale value defines ...

Page 50: ...R gain setting E The resulting value relates to a percentage of the rated field voltage 𝐹𝐹𝐹𝐹𝐹𝐹 𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴 𝑉𝑉 𝑎𝑎𝑎𝑎𝑎𝑎 0 01 𝐹𝐹𝐹𝐹𝐹𝐹 𝐺𝐺𝐺𝐺𝐺𝐺𝐺𝐺 𝑁𝑁𝑁𝑁 𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿 𝑅𝑅𝑅𝑅𝑅𝑅𝑅𝑅𝑅𝑅 𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹 𝑉𝑉𝑉𝑉𝑉𝑉𝑉𝑉𝑉𝑉𝑉𝑉𝑉𝑉 Var Mode In var mode the auxiliary control signal is multiplied by the Var gain setting F The resulting value relates to a percentage of the rated apparent power kVA 𝑣𝑣𝑣𝑣𝑣𝑣 𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴 𝑉𝑉 𝑎𝑎𝑎𝑎𝑎𝑎 0 01 𝑣𝑣𝑣𝑣𝑣𝑣 𝐺𝐺...

Page 51: ...Input C AVR Mode Gain Adjustable from 99 to 99 in 0 01 increments D FCR Mode Gain Adjustable from 99 to 99 in 0 01 increments E FVR Mode Gain Adjustable from 99 to 99 in 0 01 increments F Var Mode Gain Adjustable from 99 to 99 in 0 01 increments G PF Mode Gain Adjustable from 99 to 99 in 0 01 increments H Summing Type Select Inner Loop or Outer Loop ...

Page 52: ...36 9440300990 Rev J Auxiliary Control DECS 250 ...

Page 53: ...contact input terminal must not exceed 150 feet 45 7 meters Longer wiring lengths may allow induced electrical noise to interfere with the recognition of contact inputs Start and Stop Inputs The Start and Stop inputs accept a momentary contact closure that enables Start and disables Stop the DECS 250 If the DECS 250 receives Start and Stop contact inputs simultaneously the Stop input takes priorit...

Page 54: ...following conditions Control power is lost Normal firmware execution ceases Transfer Watchdog Trip is asserted in BESTlogicPlus Watchdog output connections are made at terminals WTCHD1 normally open WTCHD common and WTCHD2 normally closed Programmable Outputs The 11 programmable normally open contact outputs can be configured to annunciate DECS 250 status active alarms active protection functions ...

Page 55: ...24 Contact Output Label Text A Label Text Enter a string of up to 64 alphanumeric characters See the Terminals and Connectors chapter for an illustration of the programmable output terminals Contact output electrical ratings are listed in the Specifications chapter ...

Page 56: ...40 9440300990 Rev J Contact Inputs and Outputs DECS 250 ...

Page 57: ... other potentially damaging system conditions such as a change in system voltage and reduced frequency conditions that can exceed the system s excitation capability Several volts per hertz settings enable the DECS 250 to provide flexible generator and generator step up transformer overexcitation protection An inverse square timing characteristic is provided through the Inverse Time Pickup Setpoint...

Page 58: ...42 9440300990 Rev J Protection DECS 250 Figure 25 V Hz Characteristic Time Shown on Vertical Axis Figure 26 V Hz Characteristic Time Shown on Horizontal Axis ...

Page 59: ...tage decreases below the pickup setting A An undervoltage trip condition occurs if the generator voltage remains below the pickup threshold for the duration of the time delay setting B Generator undervoltage protection can be enabled and disabled C without altering the pickup and time delay settings Undervoltage pickup and trip elements in BESTlogicPlus can be used in a logic scheme to initiate co...

Page 60: ...abled or Disabled Loss of Sensing The generator voltage is monitored for a loss of sensing LOS condition LOS protection settings are illustrated in Figure 30 In the DECS 250 a loss of sensing event is calculated using sequence components A loss of sensing event occurs when the positive sequence voltage drops below the balanced A setting percentage of the AVR setpoint or when the negative sequence ...

Page 61: ...quency and under frequency conditions Overfrequency An overfrequency condition occurs when the frequency of the generator voltage exceeds the 81O pickup threshold A for the duration of the 81O time delay setting B Overfrequency protection can be enabled and disabled C without altering the pickup and time delay settings Overfrequency pickup and trip elements in BESTlogicPlus can be used in a logic ...

Page 62: ...0 01 hertz increments B Underfrequency 81U Time Delay s Adjustable from 0 1 to 300 seconds in 0 1 second increments C Underfrequency 81U Voltage Inhibit Adjustable from 50 to 100 in 1 increments D Underfrequency 81U Mode Select Disable or Under Power Protection BESTCOMSPlus Navigation Path Settings Explorer Protection Power HMI Navigation Path Settings Protection Power Generator power levels are m...

Page 63: ... normal excitation supply The element is always calibrated to the equivalent three phase power even if the connection is single phase The loss of excitation element compares the reactive power to a map of the allowed reactive power as defined by the Pickup setting The loss of excitation element remains in a pickup condition until power flow falls below the dropout ratio of 95 of the actual pickup ...

Page 64: ...s taken and the element is rearmed for any further occurrences of loss of excitation The 40Q threshold is expressed as a percentage of the rated var flow for the machine Loss of excitation protection can be enabled and disabled C without altering the pickup and time delay settings BESTCOMSPlus loss of excitation settings are illustrated in Figure 35 Figure 35 Loss of Excitation Protection Settings...

Page 65: ...nt A field overcurrent condition is annunciated when the field current exceeds the field overcurrent pickup level A for the duration of the field overcurrent time delay Depending on the selected timing mode B the time delay can be fixed or related to an inverse function Definite timing mode uses a fixed time delay C In inverse timing mode the time delay is shortened in relation to the level of fie...

Page 66: ...ode Select Definite Timing or Inverse Timing C Field Overcurrent Time Delay s Adjustable from 0 or 5 to 60 seconds in 0 1 second increments D Field Overcurrent Time Dial Adjustable from 0 1 to 20 in increments of 0 1 E Field Overcurrent Mode Select Disabled or Enabled F Inverse field overcurrent pickup curve G Curve display selections Exciter Diode Monitor The exciter diode monitor EDM monitors th...

Page 67: ...g prevents nuisance annunciations due to low excitation current or the generator frequency being out of range A disable level setting F can be used to disable both open and shorted diode protection when the rated field current drops below the user defined percentage EDM protection can be disabled and enabled G by the user without altering the individual protection settings Applying EDM Protection ...

Page 68: ... of the EDM setup guidelines presented here assume that the exciter diodes were not opened or shorted at the time of setup and testing Power Input Failure A power input failure condition exists when any one of the following occurs 1 phase operating power When operating power decreases below 50 Vac a power input failure condition exists 3 phase operating power All three phases of operating power de...

Page 69: ...hen enabled A the sync check 25 function supervises the automatic or manual synchronism of the controlled generator with a bus utility During synchronizing the 25 function compares the voltage B slip angle C and slip frequency D differences between the generator and bus When the generator bus differences fall within the setting for each parameter the 25 status virtual output asserts This virtual o...

Page 70: ...oltage increases above the threshold Configurable Protection BESTCOMSPlus Navigation Path Settings Explorer Protection Configurable Protection HMI Navigation Path Settings Protection Configurable Protection The DECS 250 has eight configurable protection elements which can be used to supplement the standard DECS 250 protection BESTCOMSPlus configurable protection settings are illustrated in Figure ...

Page 71: ...ts repeated pickups and dropouts where the monitored parameter is hovering around the pickup threshold For example with a hysteresis setting of 5 on a protection element configured to pick up at 100 Aac of A phase generator overcurrent the protection element would pick up when the current rises above 100 Aac and remain picked up until the current decreases below 95 Aac Each of the eight configurab...

Page 72: ...urrent Positive Sequence Voltage Positive Sequence Current PSS Output Analog Input 1 Analog Input 2 Analog Input 3 Analog Input 4 Analog Input 5 Analog Input 6 Analog Input 7 Analog Input 8 RTD Input 1 RTD Input 2 RTD Input 3 RTD Input 4 RTD Input 5 RTD Input 6 RTD Input 7 RTD Input 8 Thermocouple 1 Thermocouple 2 Power Input or NLS Error Percent C Stop Mode Inhibit Select Yes or No D Arming Delay...

Page 73: ... behavior is dictated by two separate groups of settings Primary and secondary setting groups selectable in configurable logic provide additional control for two distinct machine operating conditions Offline Operation For offline operation there are two levels of summing point overexcitation limiting low and high Figure 42 illustrates the relationship of the high level and low level OEL thresholds...

Page 74: ... limit the excitation to the value of the medium level setting The online high level OEL threshold is determined by a high level I and high time J setting When the excitation level exceeds the high level setting the DECS 250 instantaneously acts to limit the excitation to the value of the medium level setting OEL Voltage Dependency Online OEL operation can be tailored for fault proximity by enabli...

Page 75: ...line High Level Adjustable from 0 to 30 Adc for the DECS 250 The setting increment is 0 01 Adc J Summing Point OEL Online High Time Adjustable from 0 to 10 s in 1 s increments K dv dt Enable Check box to enable OEL voltage dependency L dv dt Level Adjustable from 10 to 0 in 0 1 increments per unit Takeover OEL Takeover overexcitation limiting limits the field current level in relation to an invers...

Page 76: ... required for reset Inverse reset uses the following curve Equation 12 to calculate maximum reset time 𝑇𝑇𝑇𝑇𝑇𝑇𝑇𝑇𝑟𝑟𝑟𝑟𝑟𝑟𝑟𝑟𝑟𝑟 𝑅𝑅𝑅𝑅 𝑇𝑇𝑇𝑇 𝑀𝑀𝑀𝑀𝑀𝑀𝑟𝑟𝑟𝑟𝑟𝑟𝑟𝑟𝑟𝑟 2 1 Equation 12 Inverse Reset Time Characteristic Where Timereset maximum time to reset in seconds RC reset coefficient setting E 0 01 100 TD time dial setting 0 1 20 MOPreset multiple of pickup 1 03 205 For the integrating reset method the reset time...

Page 77: ...n to overheat Extreme underexcitation may lead to a loss of synchronism The underexcitation limiter UEL senses the leading var level of the generator and limits decreases in excitation to limit end iron heating When enabled A the UEL operates in all regulation modes UEL behavior in manual mode can be configured to limit excitation or issue an alarm This behavior is configured in BESTlogicPlus Note...

Page 78: ... dependency real power exponent E The user defined UEL curve is automatically adjusted based on the ratio of the generator operating voltage divided by the generator rated voltage raised to the power of the UEL voltage dependency real power exponent UEL voltage dependency is further defined by a real power filter time constant F that is applied to the low pass filter for the real power output Figu...

Page 79: ... will not act to limit it Primary and secondary SCR setting groups provide additional control for two distinct machine operating conditions Stator current limiting is provided at two levels low and high see Figure 50 SCL settings are illustrated in Figure 51 Figure 50 Stator Current Limiting Low Level Limiting When the stator current exceeds the low level setting B the DECS 250 annunciates the ele...

Page 80: ...wer exported from the generator Primary and secondary setting groups provide additional control for two distinct machine operating conditions The var limiter setpoint B is expressed as a percentage of the calculated maximum VA rating for the machine A delay setting C establishes a time delay between when the var threshold is exceeded and the DECS 250 acts to limit the var flow Var limiter settings...

Page 81: ...tor current for the SCL Figure 53 Limiter Scaling Settings A OEL and SCL Scale Enable Select Auxiliary Input AEM RTD 1 to AEM RTD 8 or Disabled B Signal Adjustable from 10 to 10 in 0 01 increments when Auxiliary Input is selected Adjustable from 58 to 482 in increments of 1 when any AEM RTD input is selected C Scale Adjustable from 0 to 200 in increments of 0 1 Underfrequency Limiter BESTCOMSPlus ...

Page 82: ...quency slope setting volts per hertz limiter operation is determined by the high limiter setting low limiter setting and time limiter setting The high limiter setting D establishes the maximum threshold for volts per hertz limiting the low limiter setting E establishes the minimum threshold for volts per hertz limiting and the time limiter setting F establishes the time delay for limiting Corner F...

Page 83: ...frequency Limiter Corner Frequency Adjustable from 40 to 75 Hz in 0 1 Hz increments C Underfrequency Limiter Slope Adjustable from 0 to 3 in increments of 0 01 D V Hz High Limiter Adjustable from 0 to 3 in increments of 0 01 E V Hz Low Limiter Adjustable from 0 to 3 in increments of 0 01 F V Hz Time Limiter Adjustable from 0 to 10 s in 0 2 s increments ...

Page 84: ...68 9440300990 Rev J Limiters DECS 250 ...

Page 85: ...f multiple metering screens Clicking and dragging a metering screen tab displays a blue transparent square several arrow boxes and a tab box These docking elements are illustrated in Figure 57 Figure 57 Metering Screen Docking Controls Dragging the blue square to the up locator A right locator B or down locator C arrow box places the selected metering screen across the top along the side or at the...

Page 86: ...ude and angle current magnitude and angle and frequency Primary and per unit values are available Figure 58 illustrates the generator primary values metering screen Figure 58 Generator Primary Values Metering Power BESTCOMSPlus Navigation Path Metering Explorer Power HMI Navigation Path Metering Explorer Power Metered power parameters include true power kW apparent power kVA reactive power kvar an...

Page 87: ...ting Mode Generator Motor Positive Lagging PF Leading PF Negative Leading PF Lagging PF Bus BESTCOMSPlus Navigation Path Metering Explorer Bus HMI Navigation Path Metering Explorer Bus Metered bus parameters include the voltage across phases A and B Vab phases B and C Vbc phases A and C Vca and the average bus voltage The frequency of the bus voltage is also metered Primary and per unit values are...

Page 88: ...oltage The level of excitation power supplied to the field is displayed as a percentage with 0 being the minimum and 100 being the maximum Primary and per unit values are available Figure 62 illustrates the field primary values metering screen Figure 62 Field Primary Values Metering PSS BESTCOMSPlus Navigation Path Metering Explorer PSS Power System Stabilizer HMI Navigation Path Metering Explorer...

Page 89: ... the synchronization primary values metering screen Figure 64 Synchronization Primary Values Metering Auxiliary Control Input BESTCOMSPlus Navigation Path Metering Explorer Aux Input HMI Navigation Path Metering Explorer Aux Input The control signal applied at the DECS 250 auxiliary control input is indicated on the Aux Input metering screen Figure 65 As configured in BESTCOMSPlus a dc voltage or ...

Page 90: ...tpoints for AVR FCR FVR var and PF are displayed as well as Alarm status PSS status and Null Balance status Figure 67 Control Panel Start Stop Mode Two indicators show the start stop mode of the DECS 250 When a mode is active its corresponding indicator changes from gray to green To select the DECS 250 Start status click the Start button Click the Stop button to select DECS 250 Stop status AVR Man...

Page 91: ... the active operating setpoint Clicking the Lower button decreases the active operating setpoint The raise and lower increment is directly proportional to the adjustment range and inversely proportional to the traverse rate Alarm Status The Alarm Status indicator changes from gray to green when there is an active alarm PSS Status The PSS Status indicator changes from gray to green when the PSS is ...

Page 92: ...hare configurable protection alarms and the real time clock System Status BESTCOMSPlus Navigation Path Metering Explorer Status System Status HMI Navigation Path Metering Explorer Status System Status When any of the system functions illustrated in Figure 69 are active the corresponding indicator changes from gray to green An inactive function is represented by a gray indicator ...

Page 93: ...ovided for the DECS 250 and optional Contact Expansion Module CEM 2020 inputs Annunciation is also provided for the optional Analog Expansion Module AEM 2020 inputs DECS 250 Contact Inputs Status indication for the DECS 250 s 16 contact sensing inputs is provided on the BESTCOMSPlus contact inputs screen illustrated in Figure 70 An indicator changes from gray to red when a closed contact is sensed...

Page 94: ...puts Status annunciation is provided for the DECS 250 contact outputs and optional Contact Expansion Module CEM 2020 contact outputs Annunciation is also provided for the optional Analog Expansion Module AEM 2020 analog outputs DECS 250 Contact Outputs Status indication for the DECS 250 s Watchdog and 11 contact outputs is provided on the BESTCOMSPlus contact outputs screen illustrated in Figure 7...

Page 95: ...active Current is the average of the reactive current of every unit in the system Generators Online is the number of units actively load sharing Figure 72 NLS Status Screen Configurable Protection BESTCOMSPlus Navigation Path Metering Explorer Status Configurable Protection HMI Navigation Path Metering Explorer Status Configurable Protection Trip status for the eight configurable supplemental prot...

Page 96: ...elow Figure 74 DECS 250 Alarm Annunciation and Reset Screen 27P Protection 32 Protection 40Q 59P Protection 81O Protection 81U Protection AEM Communication Failure AEM Input 1 Out of Range AEM Input 1 Threshold 1 Trip AEM Input 1 Threshold 2 Trip AEM Input 1 Threshold 3 Trip AEM Input 1 Threshold 4 Trip AEM Input 2 Out of Range AEM Input 2 Threshold 1 Trip AEM Input 2 Threshold 2 Trip AEM Input 2 ...

Page 97: ...Configurable Protection 7 Threshold 3 Trip Configurable Protection 7 Threshold 4 Trip Configurable Protection 8 Threshold 1 Trip Configurable Protection 8 Threshold 2 Trip Configurable Protection 8 Threshold 3 Trip Configurable Protection 8 Threshold 4 Trip Duplicate AEM Duplicate CEM Ethernet Link Lost Exciter Open Diode Exciter Shorted Diode Failed to Build Up Alarm Field Short Circuit Status Fi...

Page 98: ...g alarms are stored in nonvolatile memory and are retained even when control power to the DECS 250 is lost Active alarms are shown on the front panel LCD and in BESTCOMSPlusuntilthey are cleared Non latching alarms are cleared when control power is removed Disabling an alarm affects only the annunciation of the alarm and not the actual operation of the alarm This means that the alarm will still tr...

Page 99: ... Use the Settings Explorer within BESTCOMSPlus to open the BESTlogicPlus Programmable Logic screen Select the ALARM_RESET logic block from the list of Elements Use the drag and drop method to connect a variable or series of variables to the Reset input When this input is set TRUE this element resets all active alarms Refer to the BESTlogicPlus chapter for more information Real Time Clock BESTCOMSP...

Page 100: ...time while connected to a DECS 250 The user specifies the Number of Exports and the Interval between each export Enter a base filename for the metering data and a folder in which to save The exports are counted and the count number will be appended to the base filename making each filename unique The first export is performed immediately after clicking the Start button Figure 78 illustrates the Au...

Page 101: ... points can be recorded in the sequence of events All points are enabled by default Sequence of Events Setup is illustrated in Figure 79 Figure 79 Sequence of Events Setup Data Logging BESTCOMSPlus Navigation Path Settings Explorer Report Configuration Data Log HMI Navigation Path Settings Configuration Settings Data Log The data logging function of the DECS 250 can record up to 6 oscillography re...

Page 102: ...tput varLimOutput Null Balance PositionInd AvrOut FcrErr FcrState FcrOut FvrErr FvrState FvrOut var PfErr var PfState var PfOut Oel State Uel State Scl State VarLimState Droop Network Load Share Oel Ref Uel Ref Scl Ref Scl PfRef VarLimRef ProgrammableDiagnostic1 ProgrammableDiagnostic2 ProgrammableDiagnostic3 ProgrammableDiagnostic4 ProgrammableDiagnostic5 ProgrammableDiagnostic6 Selecting No Leve...

Page 103: ...Start Mode Active or No Trigger C Underfrequency Select Inactive Trigger Active Trigger or No Trigger D Auto Manual Select Manual Control Trigger AVR Control Trigger or No Trigger E Var Power Factor Select Operating Mode Off Trigger Operating Mode PF Trigger Operating Mode VAR Trigger or No Trigger F Limiters Select Limiter Off Trigger Limiter UEL Trigger Limiter OEL Trigger Limiter UEL OEL Trigge...

Page 104: ...e lower threshold setting The parameters available to trigger a data log are listed below Figure 82 Data Log Level Triggers Auxiliary voltage input AVR output AVR PID error signal input Bus frequency Bus voltage Comp frequency deviation Control output Cross current input Droop FCR error FCR output FCR state Field current Field voltage Frequency response FVR error FVR output FVR state Generator app...

Page 105: ...riggering initiates a data log as a result of an internal or external status change A data log can be triggered by any combination of alarm contact output or contact input state changes The available logic triggers are illustrated in Figure 83 Figure 83 Data Log Logic Triggers Trending BESTCOMSPlus Navigation Path Settings Explorer Report Configuration Trending HMI Navigation Path Settings Configu...

Page 106: ...2 Speed HP 1 WashW Washed Out Speed p u x5 Power HP 1 p u WashP Washed Out Power p u x7 Mechanical Power p u x8 Mechanical Power LP 1 x9 Mechanical Power LP 2 x10 Mechanical Power LP 3 x11 Mechanical Power LP 4 MechP Filtered Mechanical Power p u Synth Synthesized Speed p u Tflt1 Torsional Filter 1 p u x29 Torsional Filter 2 p u x15 Lead Lag 1 p u x16 Lead Lag 2 p u x17 Lead Lag 3 p u x31 Lead Lag...

Page 107: ...lly enabled This threshold is a per unit setting based on the generator ratings The Configuration chapter of this manual provides information about entering the generator and system ratings A hysteresis setting C provides a margin below the power on threshold so that transient dips in power watts will not disable stabilizer operation This hysteresis is a per unit setting based on the generator rat...

Page 108: ...92 9440300990 Rev J Power System Stabilizer DECS 250 Figure 85 PSS Function Blocks and Software Switches ...

Page 109: ...cross the machine reactance To compensate for this effect the DECS 250 first calculates the terminal voltages and currents It then adds the voltage drop across the quadrature reactance to the terminal voltages to obtain internal machine voltages These voltages are then used to calculate the rotor frequency This gives a more accurate measure of rotor speed during low frequency transients when stabi...

Page 110: ...izer output variation to very low levels for the mechanical power rates of change that are normally encountered during operation of utility scale generators The ramp tracking filter is controlled by time constant Tr S An exponent consisting of a numerator T and denominator U is applied to the mechanical power filter Processing of the derived integral of mechanical power signal is illustrated in Fi...

Page 111: ...stages are available Each phase compensation stage has a phase lead time constant CC T1 T3 T5 T7 and a phase lag time constant DD T2 T4 T6 T8 Normally the first two lead lag stages are adequate to match the phase compensation requirements of a unit If needed the third and fourth stages may be added through the settings of software switches SSW 6 EE and SSW 7 FF Figure 91 illustrates the phase comp...

Page 112: ...izer output signal to the voltage regulator input adjustable gain MM and upper NN and lower OO limits are applied The stabilizer output is connected to the voltage regulator input when the software switch SSW 10 PP setting is On Processing of the stabilizer output signal is illustrated in Figure 93 Figure 93 Output Stage Terminal Voltage Limiter Since the PSS operates by modulating the excitation ...

Page 113: ...tes The limiter reduces the stabilizer s upper limit VPSS_ULMT at a fixed rate until zero is reached or overvoltage is no longer present The limiter does not reduce the AVR reference below its normal level it will not interfere with system voltage control during disturbance conditions The error signal terminal voltage minus the limit start point is processed through a conventional low pass filter ...

Page 114: ...98 9440300990 Rev J Power System Stabilizer DECS 250 Figure 96 PSS Parameter Settings ...

Page 115: ... in 0 001 increments L Power Washout Filter 2 Software Switch SSW 1 Select Enabled or Disabled M High Pass Filtering Integration Time Constant Tw3 Adjustable from 1 to 20 in 0 01 increments N High Pass Filtering Integration Time Constant Tw4 Adjustable from 1 to 20 in 0 01 increments O High Pass Filtering Integration Inertia H Adjustable from 1 to 25 in 0 01 increments P Low Pass Ramp Tracking Tim...

Page 116: ...Disabled HH Logic Limiter Washout Filter Normal Time Constant Adjustable from 5 to 30 in 0 1 increments II Logic Limiter Washout Filter Limit Time Constant Adjustable from 0 to 1 in 0 01 increments JJ Logic Output Limiter Upper Limit Adjustable from 0 01 to 0 04 in 0 01 increments KK Logic Output Limiter Lower Limit Adjustable from 0 04 to 0 01 in 0 01 increments LL Logic Output Limiter Time Delay...

Page 117: ...ler can provide improved damping of first swing oscillations when the PSS is offline BESTCOMSPlus primary and secondary AVR stability settings are shown in Figure 98 Predefined Stability Settings Twenty predefined sets A of stability settings are available with the DECS 250 Appropriate PID values are implemented based on the nominal generator frequency selected see the Configuration chapter of thi...

Page 118: ...gain option is Custom The PID calculator Figure 99 calculates the gain parameters Kp A Ki B and Kd C based on the generator time constants T do D and exciter time constant Te E If the exciter time constant is not known it can be forced to the default value F which is the generator time constant divided by six A derivative time constant Td G setting field enables the removal of noise effects on num...

Page 119: ...Add Record Adds a PID record M Remove Record Removes a PID record Auto Tuning During commissioning excitation system parameters may not be known These unknown variables traditionally cause the commissioning process to consume large amounts of time and fuel With the development of auto tuning the excitation system parameters are now automatically identified and the PID gains are calculated using we...

Page 120: ...igation Path Settings Explorer Operating Settings Gain FCR FVR HMI Navigation Path Settings Operating Settings Gains FCR Gains or FVR Gains Stability tuning can be tailored for optimum performance when operating in field current regulation or field voltage regulation mode BESTCOMSPlus FCR stability settings and FVR stability settings are illustrated in Figure 101 FCR Mode Stability Settings The DE...

Page 121: ...e actual field voltage value Increasing Kd reduces ringing in the transient response Additional FVR stability settings remove the noise effect on numerical differentiation derivative time constant Td J and set the voltage regulator gain level of the PID algorithm Ka K with recommended gain calculation L Figure 101 FCR and FVR Gain Settings A Kp Proportional Gain Adjustable from 0 to 1 000 in 0 001...

Page 122: ... Kg D adjusts the coarse loop gain level of the PI algorithm for power factor control Overexcitation Limiter OEL The integral gain Ki E adjusts the rate at which the DECS 250 responds during an overexcitation condition The integral loop gain Kg F adjusts the coarse loop gain level of the PI algorithm for the overexcitation limiter function Underexcitation Limiter UEL The integral gain Ki G adjusts...

Page 123: ...table from 0 to 1 000 in 0 001 increments F OEL Kg Loop Gain Adjustable from 0 to 1 000 in 0 001 increments G UEL Ki Integral Gain Adjustable from 0 to 1 000 in 0 001 increments H UEL Kg Loop Gain Adjustable from 0 to 1 000 in 0 001 increments I SCL Ki Integral Gain Adjustable from 0 to 1 000 in 0 001 increments J SCL Kg Loop Gain Adjustable from 0 to 1 000 in 0 001 increments K VARL Ki Integral G...

Page 124: ...108 9440300990 Rev J Stability Tuning DECS 250 ...

Page 125: ...ientation necessitates vertical mounting for maximum cooling Any other mounting angle will reduce heat dissipation and possibly lead to premature failure of critical components The DECS 250 may be mounted anywhere the ambient temperature does not exceed the maximum operating temperature as listed in the Specifications chapter Projection Mounting Figure 103 illustrates the mounting dimensions for p...

Page 126: ...110 9440300990 Rev J Mounting DECS 250 Figure 103 Overall and Projection Mounting Dimensions ...

Page 127: ...9440300990 Rev J 111 DECS 250 Mounting Figure 104 DECS 250 Escutcheon Plate Dimensions ...

Page 128: ...112 9440300990 Rev J Mounting DECS 250 Figure 105 Panel Cutting and Drilling Dimensions for DECS 250 Panel Mounting ...

Page 129: ...ectors plugged into the terminals Locator letters in each illustration correspond to the terminal block and connector descriptions in Table 4 and Table 5 The front panel USB jack is illustrated and described in the Controls and Indicators chapter of this manual Caution In accordance with the guidelines defined in USB standards the USB port on this device is not isolated To prevent damage to a conn...

Page 130: ...RLY 4 RLY 4 RLY 5 RLY 2 RLY 2 RLY 3 RLY 3 B1 B2 E1 E2 E3 B3 RLY 9 RLY 10 RLY 10 RLY 5 RLY 6 RLY 6 RLY 7 RLY 7 RLY 8 RLY 8 RLY 9 RLY 11 RLY 11 COM IN 4 COM IN 5 COM IN 6 COM START COM STOP COM IN 3 A B C R S 48 5 COM IN 14 COM COM COM IN 13 COM IN 10 COM IN 11 COM IN 12 COM IN 7 COM IN 8 COM IN 9 RLY 1 RLY 1 V IN 1 IN 2 I I F F CTB CTB GND P0076 02 F G H I J E D C B A ...

Page 131: ... sensing voltage obtained from user supplied voltage transformers VTs connect to these terminals F A portion of this terminal block accepts an external analog control signal for auxiliary control of the regulation setpoint Terminals I I V and V are used for external control of the regulation setpoint with the GND terminal serving as a cable shield connection The remaining terminal block pins serve...

Page 132: ...116 9440300990 Rev J Terminals and Connectors DECS 250 Figure 107 Right Side Connectors and Terminals EXPANSION COM PORT ETHERNET IRIG L H SH L H CAN 1 CAN 2 SH IRIG P0076 03 K L M N ...

Page 133: ...102 IRIG 103 IRIG N This optional Ethernet communication port uses the Modbus TCP protocol to provide remote metering annunciation and control A copper 100Base T port style xxxxx1x uses a standard RJ45 jack while a fiber optic 100Base FX port style xxxxx2x uses two fiber optic connectors not shown Terminal Types Spring terminals are supplied on DECS 250 controllers with a style number of xxxSxxx T...

Page 134: ...pression Terminals Spring Terminals M 16 AWG 1 5 mm 2 solid and stranded N A N A 0 35 in 9 mm Spring terminal connector blocks identified by locators A through J and M are held in place by retaining clips Connectors identified by locators A B E F G H I and J are keyed to avoid misconnections ...

Page 135: ...s Caution For redundant applications with a single phase 300 Hz Marathon PMG only one DECS 250 can be connected to the PMG at a time In redundant applications a contactor should be used for each DECS 250 power input or equipment damage may occur 3 Generator voltage sensing input Potential transformer required if line voltage exceeds 600 Vac 4 Cross current compensation input 1 Aac or 5 Aac 5 Conne...

Page 136: ...is input output is unassigned by default if the DECS 250 is not equipped with the optional PSS style number xPxxxxx 14 RS 485 port uses the Modbus RTU protocol for communication with other networked devices Figure 108 Typical DECS 250 Connections for Shunt Powered Applications ...

Page 137: ...9440300990 Rev J 121 DECS 250 Typical Connections Figure 109 Typical DECS 250 PMG Connections for PMG Powered Applications ...

Page 138: ...122 9440300990 Rev J Typical Connections DECS 250 Figure 110 Typical DECS 250 PMG Connections for Station Powered Applications ...

Page 139: ...ically by connecting to a DECS 250 or activated manually by requesting an activation key from Basler Electric The DECS 250 plugin opens inside the BESTCOMSPlus main shell The same default logic scheme that is shipped with the DECS 250 is brought into BESTCOMSPlus by downloading settings and logic from the DECS 250 This gives the user the option of developing a custom setting file by modifying the ...

Page 140: ... errors 1 Insert the BESTCOMSPlus CD ROM into the PC CD ROM drive 2 When the BESTCOMSPlus Setup and Documentation CD menu appears click the Install button for the BESTCOMSPlus application The setup utility installs BESTCOMSPlus the NET Framework if not already installed the USB driver and the DECS 250 plugin for BESTCOMSPlus on your PC When BESTCOMSPlus installation is complete a Basler Electric f...

Page 141: ... the USB port on this device is not isolated To prevent damage to a connected PC or laptop the DECS 250 must be properly tied to ground Start BESTCOMSPlus and Activate DECS 250 Plugin Automatically To start BESTCOMSPlus click the Start button point to Programs Basler Electric and then click the BESTCOMSPlus icon During initial startup the BESTCOMSPlus Select Language screen is displayed Figure 112...

Page 142: ...dow opens Select New Connection from the Communication pull down menu and select DECS 250 See Figure 114 The DECS 250 plugin is activated automatically after connecting to a DECS 250 Figure 114 Communication Pull Down Menu The DECS 250 Connection screen shown in Figure 115 appears Select USB Connection and click Connect ...

Page 143: ...hat is not connected to a DECS 250 Manual activation is described in the following paragraphs Requesting an Activation Key When initially running the DECS 250 plugin the Activate Device Plugin pop up appears You must contact Basler Electric for an activation key before you can activate the DECS 250 plugin You can request an activation key through email or the Basler Electric website Click either t...

Page 144: ... menu bar of the main BESTCOMSPlus screen Figure 111 If you receive an Unable to Connect to Device error message verify that communications are configured properly Only one Ethernet connection is allowed at one time Download all settings and logic from the relay by selecting Download Settings and Logic from the Communication pull down menu BESTCOMSPlus will read all settings and logic from the DEC...

Page 145: ...ettings to Device Upload operational settings to the device Upload Logic to Device Upload logic settings to the device Download Security from Device Download security settings from the device Upload Security to Device Upload security settings to the device Configure Ethernet settings Upload Device Files Upload firmware to the device Tools Check for Updates Check for BESTCOMSPlus updates via the in...

Page 146: ...e mode where settings are automatically sent to the device in real time as they are changed Send Settings Sends settings to the DECS 250 when BESTCOMSPlus is not operating in Live Mode Click on this button after making a setting change to send the modified setting to the DECS 250 Settings Explorer The Settings Explorer is a convenient tool within BESTCOMSPlus used to navigate through the various s...

Page 147: ...to Device To upload a settings file to the DECS 250 open the file or create a new file through BESTCOMSPlus Then pull down the Communication menu and select Upload Settings and Logic to Device If you want to upload operational settings without logic select Upload Settings to Device If you want to upload logic without operational settings select Upload Logic to Device You are prompted to enter the ...

Page 148: ...unication port Click the Compare button to compare the selected settings files Figure 119 BESTCOMSPlus Settings Compare Setup A dialog box will appear and notify you if any differences were found The BESTCOMSPlus Settings Compare dialog box Figure 120 is displayed where you can view all settings Show All Settings view only the differences Show Settings Differences view all logic Show All Logic Pat...

Page 149: ...Start button Click the Filter button to select specific metering screens Figure 121 illustrates the Auto Export Metering screen Figure 121 Auto Export Metering Screen Firmware Updates Future enhancements to the DECS 250 functionality may require a firmware update Because default settings are loaded when DECS 250 firmware is updated your settings should be saved in a file prior to upgrading firmwar...

Page 150: ...he system should be upgraded to ensure compatibility of communications between the components Caution The order in which the components are upgraded is critical Assuming a system of a DECS 250 and expansion module s is in a state where the DECS 250 is communicating with the system expansion module s the expansion module must be upgraded before the DECS 250 This is necessary because the DECS 250 mu...

Page 151: ...l down menu 7 You will be asked to save the current settings file Select Yes or No 8 When the Basler Electric Device Package Uploader screen Figure 122 appears click on the Open button to browse for the device package you have received from Basler Electric The Package Files along with File Details are listed Place a check in the boxes next to the individual files you want to upload Figure 122 Basl...

Page 152: ...s incompatible with the firmware version check that the DECS 250 style number in the saved file matches that of the DECS 250 into which the file is being uploaded The style number in the settings file is found under General Settings Style Number in BESTCOMSPlus g If the style number of the settings file does not match that of the DECS 250 into which it is to be loaded disconnect from the DECS 250 ...

Page 153: ...hemes are configured for a typical protection and control application of a synchronous generator and virtually eliminate the need for start from scratch programming The default logic schemes are similar to that of a DECS 200 BESTCOMSPlus can be used to open a logic scheme that was previously saved as a file and upload it to the DECS 250 The default logic schemes can also be customized to suit your...

Page 154: ...Plus see the paragraphs on Programming BESTlogicPlus I O This group contains Input Objects Output Objects Off Page Objects and Alarms Table 11 lists the names and descriptions of the objects in the I O group Table 11 I O Group Names and Descriptions Name Description Symbol Input Objects Logic 0 Always false Low Logic 1 Always true High Physical Inputs Start Input True when the physical Start input...

Page 155: ...rue when the Bus Stable condition settings have been exceeded Available when the controller is equipped with the optional Auto synchronizer style number xxxxAxx Auto Sync Enabled True when DECS auto sync is enabled Available when the controller is equipped with the optional Auto synchronizer style number xxxxAxx Dead Bus Close Request True when this option is user enabled a dead bus is closed auto...

Page 156: ... been exceeded Available when the controller is equipped with the optional Auto synchronizer style number xxxxAxx GOV Contact Type Proportional True when this option is selected Governor Bias Control Settings screen Internal Tracking Active True when internal tracking is running IRIG Sync Lost True when IRIG signal is not being received Manual Mode Active True when the unit is in Manual mode FCR F...

Page 157: ...and running PSS Current Unbalanced Optional True when the phase current is unbalanced and the PSS is active PSS Power Below Threshold Optional True when the input power is below the Power Level threshold and the PSS is active PSS Secondary Group Optional True when the PSS is using secondary settings PSS Speed Failed Optional True when the frequency is out of range for a length of time calculated i...

Page 158: ...ive True when the Var Limiter is active Voltage Matching Active True when Voltage Matching is active Protection Several protection status alarms are available The 25 Sync Check Status Alarm input is shown to the right These elements are true when the pickup threshold is exceeded for the duration of the time delay Configurable Protection 1 8 There are four thresholds for each of the eight Configura...

Page 159: ...n one AEM is detected Only one AEM is supported at a time Analog Expansion Module Remote Analog Inputs 1 8 There are four thresholds for each of the eight Remote Analog Input blocks Each threshold has a separate logic block for the pickup and the trip Remote Analog Input 1 with its Threshold 1 Pickup and Trip blocks is shown to the right For more details on configuring the Remote Analog Inputs see...

Page 160: ...parate logic block for the pickup and the trip Remote Thermocouple Input 1 with its Threshold 1 Pickup and Trip blocks is shown to the right For more details on configuring the Remote Thermocouple Inputs see the Analog Expansion Module chapter in this manual The pickup block is true when the threshold is exceeded The trip block is true when the corresponding pickup block threshold is exceeded for ...

Page 161: ...hat page Alarms Global Alarm True when one or more alarms are set Programmable Alarms 1 16 True when a programmable alarm is set Components This group contains Logic Gates Pickup and Dropout Timers Latches and Comment Blocks Table 12 lists the names and descriptions of the objects in the Components group Table 12 Components Group Names and Descriptions Name Description Symbol Logic Gates AND Input...

Page 162: ...ore information refer to Programming BESTlogicPlus Pickup and Dropout Timers later in this chapter Latches Reset Priority Latch When the Set input is on and the Reset input is off the latch will go to the SET ON state When the Reset input is on and the Set input is off the latch will go to the RESET OFF state If both the Set and Reset inputs are on at the same time a reset priority latch will go t...

Page 163: ...Elements group Table 13 Elements Group Names and Descriptions Name Description Symbol 27 When true this element blocks or disables the 27 undervoltage protection function ALARM RESET When true this element resets all active alarms AUTO ENABLE When true this element sets the unit in Auto mode AVR AUTO TRANSFER ENABLE When true this element sets the unit as secondary When false the unit is primary C...

Page 164: ... contact outputs of the DECS 250 that will be used to drive the breaker Open This output is pulsed TRUE closes the output contact it is mapped to when the DECS 250 is providing a signal to the breaker to open It will be a pulse if the Breaker Output Contact Type is set to Pulse on the Breaker Hardware screen under Synchronizer Voltage Matching in the Settings Explorer and the length is determined ...

Page 165: ...this element disables the transfer to Manual mode during a Loss of Sensing condition LOWER ENABLE When true this element lowers the active setpoint MANUAL ENABLE When true this element switches the unit to Manual mode MANUAL MODE FCR ONLY When true this element switches the Manual mode to FCR NETWORK LOAD SHARE DISABLE When true this element disables network load sharing NLS BROADCAST This element...

Page 166: ... is online The Var PF Selection element must be set to true to use var or PF mode This element should be enabled when the 52JK is closed PREPOSITION 1 ENABLE When true this element informs the unit to use setpoints for Preposition 1 PREPOSITION 2 ENABLE When true this element informs the unit to use setpoints for Preposition 2 PREPOSITION 3 ENABLE When true this element informs the unit to use set...

Page 167: ... is equipped with the optional Power System Stabilizer style number xPxxxxx RAISE ENABLE When true this element raises the active setpoint SCL SELECT SECONDARY SETTINGS When true this element selects the secondary settings for SCL SOFT START SELECT SECONDARY SETTINGS When true this element selects the secondary settings for softstart START ENABLE When true this element starts the unit STOP ENABLE ...

Page 168: ...ith no special programming required Unneeded logic block outputs may be left open to disable a function or a function block can be disabled through operating settings When a custom logic scheme is required programming time is reduced by modifying the default logic scheme The Active Logic Scheme The DECS 250 must have an active logic scheme in order to function All DECS 250 controllers are delivere...

Page 169: ... logic scheme in BESTCOMSPlus does not automatically make that scheme active in the DECS 250 The modified scheme must be uploaded into the DECS 250 See the paragraphs on Sending and Retrieving Logic Schemes above Default Logic Schemes The default logic scheme for PSS disabled systems is shown in Figure 124 through Figure 126 and the default logic scheme for PSS enabled systems is shown in Figure 1...

Page 170: ...154 9440300990 Rev J BESTlogic Plus DECS 250 Figure 125 PSS Disabled Default Logic Logic Page 2 Tab Figure 126 PSS Disabled Default Logic Physical Outputs Tab ...

Page 171: ...9440300990 Rev J 155 DECS 250 BESTlogic Plus Figure 127 PSS Enabled Default Logic Logic Page 1 Tab Figure 128 PSS Enabled Default Logic Logic Page 2 Tab ...

Page 172: ...open the BESTlogicPlus Programmable Logic tree branch as shown in Figure 123 The drag and drop method is used to connect a variable or series of variables to the logic inputs outputs components and elements To draw a wire link from port to port triangles click the left mouse button on a port pull the wire onto another port and release the left mouse button A red port indicates that a connection to...

Page 173: ...or each LED Table 14 Status LEDs LED Color Definition Logic Save Status Left LED Orange Logic has changed since last save Green Logic has NOT changed since last save Logic Diagram Status Center LED Red Requirements NOT met as listed above Green Requirements met as listed above Logic Layer Status Right LED Red Requirements NOT met as listed above Green Requirements met as listed above Pickup and Dr...

Page 174: ...is enabled Colors are selected by clicking the Options button on the BESTlogicPlus toolbar By default Logic 0 is red and Logic 1 is green Using your mouse double click on a logic element to change its state An example of the offline logic simulator is shown in Figure 132 STOP_ENABLE is Logic 0 red when Input 1 is Logic 1 green Input 2 is Logic 0 red and the inverter is Logic 1 green Figure 132 Off...

Page 175: ...ject s to be locked Right click on the selected object s and select Lock Object s The gold colored padlock next to the object s will change from an open to a locked state To protect a logic document select Protect Logic Document from the Protection drop down button Establishing a password is optional Uploading a BESTlogicPlus File To upload a BESTlogicPlus file to the DECS 250 you must first open ...

Page 176: ...ogic toolbar allowing you to select Paper Size Paper Source Orientation and Margins Clearing the On Screen Logic Diagram Click on the Clear button to clear the on screen logic diagram and start over BESTlogic Plus Examples Example 1 GOVR Logic Block Connections Figure 134 illustrates the GOVR logic block and two output logic blocks Output 6 is active while the governor is being raised and Output 9...

Page 177: ...s RS232 Setup HMI Navigation Path Settings Communications RS232 Setup Communication with a second DECS enables regulation setpoint tracking to occur in a dual or redundant DECS application External setpoint tracking is possible between a DECS 250 and second DECS 250 or a DECS 250 and DECS 200 All DECS controllers mentioned here use a female DB 9 RS 232 connector for communication with a second DEC...

Page 178: ...lay Adjustable from 10 to 10 000 milliseconds in 10 millisecond increments C Ethernet Unit ID Adjustable from 1 to 247 in increments of 1 RS 485 Port BESTCOMSPlus Navigation Path Settings Explorer Communications RS 485 Setup HMI Navigation Path Settings Communications RS 485 Setup An RS 485 port uses the Modbus RTU remote terminal unit protocol for polled communication with other networked devices...

Page 179: ...ven Odd or No parity D Stop Bits Select 1 or 2 stop bits Ethernet Port An Ethernet port uses the Modbus TCP protocol for polled communication with other networked devices or remote annunciation and control with an IDP 800 Interactive Display Panel CAN Communication BESTCOMSPlus Navigation Path Settings Explorer Communications CAN Bus CAN Bus Setup HMI Navigation Path Settings Communications CAN Bu...

Page 180: ...S 250 CAN port must be identified by a unique address number A The baud rate B of each port can be configured for 125 kbps or 250 kbps Port configuration settings are illustrated in Figure 140 Figure 140 CAN Port Configuration Settings A CAN bus Address Adjustable from 1 to 253 B Baud Rate Select 125 kbps or 250 kbps Remote Module Setup BESTCOMSPlus Navigation Path Settings Explorer Communications...

Page 181: ...bus TCP protocol DECS 250 Modbus communication registers are listed and defined in the Modbus Communication chapter of this manual Note Industrial Ethernet devices designed to comply with IEC 61000 4 series of specifications are recommended Ethernet Connection 1 Connect the DECS 250 to the PC using a standard Ethernet cable 2 In BESTCOMSPlus click Communication New Connection DECS 250 or click the...

Page 182: ...166 9440300990 Rev J Communication DECS 250 Figure 142 DECS 250 Connection Window Figure 143 Scanning for Connected Devices Figure 144 Device Discovery Window ...

Page 183: ...re 145 Figure 145 Waiting for Connection 7 The Advanced button displays the following window It contains options for enabling Auto Reconnect the delay between retries in milliseconds and the maximum number of attempts Figure 146 Figure 146 Advanced Properties Auto Reconnect Note The PC running BESTCOMSPlus software must be configured correctly to communicate with the DECS 250 The PC must have an I...

Page 184: ...xxxxxP the DECS 250 sends and receives PROFIBUS data through a DB 9 port located on the right side panel DECS 250 PROFIBUS communication parameters are listed and defined in the PROFIBUS Communication chapter of this manual DB 9 port communication settings are illustrated in Figure 147 and consist of the address A and network byte order B Figure 147 Profibus Setup A Address Adjustable from 0 to 12...

Page 185: ...atically calculated from the other generator ratings entered by the user Required field ratings include the no load dc voltage H and current I and full load voltage J and current K The ratio L of exciter poles to generator poles is used by the exciter diode monitor EDM function to detect open and shorted exciter diodes The calculated value can be entered directly or calculated using the pole calcu...

Page 186: ...ts L Pole Ratio Adjustable from 0 to 10 in 0 01 increments M Calculator Choose number of exciter and generator poles to calculate pole ratio N Bus Voltage Adjustable from 1 to 500 000 Vac in 1 Vac increments O Power Input Voltage Adjustable from 1 to 480 V in 01 increments P Bridge Inverted Output Check box to enable inversion uncheck to disable inversion Bridge A Power Input Configuration A setti...

Page 187: ...hases A and C and three phase sensing using three wire delta connections Figure 150 Sensing Transformer Ratings and Configuration A Generator PT Primary Voltage Adjustable from 1 to 500 000 Vac in 1 Vac increments B Generator PT Secondary Voltage Adjustable from 1 to 600 Vac in 1 Vac increments C Generator PT Phase Rotation Select ABC or ACB rotation D Generator Voltage Connections Select CA or 3W...

Page 188: ...el of generator voltage where field flashing is withdrawn In AVR mode the field flash dropout level is expressed as a percentage of the generator terminal voltage In FCR mode the level is expressed as a percentage of the field current And in FVR mode the level is expressed as a percentage of the field voltage The field flash time D defines the maximum length of time that field flashing may be appl...

Page 189: ... 250 an Application Version Number setting E is available to ensure compatibility between the selected settings and the actual settings available in the DECS 250 Product Information Product information for the DECS 250 CEM 2020 and AEM 2020 includes the device model number F and serial number G Device Identification The user assigned Device ID H can be used to identify DECS 250 controllers in repo...

Page 190: ...ers Display Units BESTCOMSPlus Navigation Path General Settings Display Units HMI Navigation Path N A When working with DECS 250 settings in BESTCOMSPlus you have the option of viewing the settings in English or Metric A units and as primary units or per unit values B When per unit values are selected settings are entered as per unit values and BESTCOMSPlus converts the per unit inputs to high sid...

Page 191: ...esign 2 Access to create and edit programmable logic Includes levels 3 4 5 and 6 below Settings 3 Access to edit settings Does not include logic settings security setup communications settings and software upgrades Includes levels 4 5 and 6 below Operator 4 Access to set date and time trigger and clear logs and edit energy values Includes levels 5 and 6 below Control 5 Access to change setpoints r...

Page 192: ...el that may include upper and lowercase letters numbers and special characters E Maximum Access Level Allowed Select Read Control Operator Settings Design or Admin F Days to Expiration Adjustable from 0 to 50 000 days in 1 day increments 0 disables setting G Save User Click button to save username and password settings Port Security BESTCOMSPlus Navigation Path Settings Explorer General Settings D...

Page 193: ...able communication ports and the corresponding access levels B Unsecured Access Level Select None Read Control Operator Settings Design or Admin C Secured Access Level Select None Read Control Operator Settings Design or Admin D Save Port Click button to save port access settings Login and Access Controls BESTCOMSPlus Navigation Path Settings Explorer General Settings Device Security Setup Access ...

Page 194: ...ol Settings A Access Timeout Adjustable from 10 to 3 600 s in 1 s increments B Login Attempts Adjustable from 1 to 10 in increments of 1 C Login Time Window Adjustable from 1 to 99 999 s in 1 s increments D Login Lockout Time Adjustable from 1 to 99 999 s in 1 s increments ...

Page 195: ...omic or other clock located on the internet intranet each DECS 250 maintains accurate timekeeping that is coordinated with the time source NTP Settings NTP is enabled in the DECS 250 by entering the internet protocol IP address of the network timeserver in the four decimal separated fields of the NTP Address setting G Time zone offset settings H provide the necessary offset from the coordinated un...

Page 196: ...rst Second Third Fourth or Last DST Start Day of Week Select desired day of the week for DST start DST Start Hour Adjustable from hour 0 to 23 in 1 hour increments DST Start Minutes Adjustable from minute 0 to 59 in 1 minute increments For Fixed Date DST Configuration DST Start Month Select desired month for DST start Day Select desired day number of month DST Start Hour Adjustable from hour 0 to ...

Page 197: ... hours in 1 hour increments DST Bias Minutes Adjustable from 59 to 59 minutes in 1 minute increments G NTP Address Four decimal separated numbers determined by the IP address of the networked time source H Time Zone hour and Minute Offset Hour offset is adjustable over the range of 12 to 12 hours in 1 hour increments Minute offset is adjustable over the range of 59 to 59 minutes in 1 minute increm...

Page 198: ...182 9440300990 Rev J Timekeeping DECS 250 ...

Page 199: ...tion measurement between terminal voltage reference and terminal voltage should be performed with the machine operating at very low load This test provides an indirect measurement of the PSS phase requirement As long as the machine is operating at very low load the terminal voltage modulation does not produce significant speed and power changes The BESTCOMSPlus Real Time Metering Analysis screen c...

Page 200: ...cal power x10 Mechanical power x11 Mechanical power x7 Mechanical power x8 Mechanical power x9 Negative sequence current I2 Negative sequence voltage V2 Network Load Share Null Balance Level Null Balance Null Balance State Null State OEL controller output OelOutput OEL reference OEL state Phase A current Ia Phase A to B line to line voltage Vab Phase B current Ib Phase B to C line to line voltage ...

Page 201: ...ich the magnitude and phase response corresponding to the specified frequency is computed This delay allows transients to settle before computations are made Figure 159 Frequency Response Screen Auto Test Mode Options Automatic test mode options include settings to select the minimum frequency maximum frequency and magnitude of the sinusoidal wave that is applied during a frequency response test B...

Page 202: ...ge pu Vfd Field Voltage pu Vtmag PSS Term Voltage WashP Washed Out Power WashW Washed Out Speed pu x10 Mechanical Power LP 3 x11 Mechanical Power LP 4 x15 Lead Lag 1 pu x16 Lead Lag 2 pu x17 Lead Lag 3 pu x2 Speed HP 1 x29 Torsional Filter 2 pu x31 Lead Lag 4 pu x5 Power HP 1 pu x7 Mechanical Power pu x8 Mechanical Power LP 1 x9 Mechanical Power LP 2 Frequency Response Read only frequency response...

Page 203: ...ation can be adjusted according to the type of test signal selected Magnitude The test signal magnitude is expressed as a percentage and excludes the gain of externally applied signals Offset A dc offset can be applied to the PSS test signal The offset is expressed as a per unit value used in proper context wherever the test signal is applied A dc offset cannot be applied to a Step test signal Fre...

Page 204: ...Response Analysis screen This screen Figure 161 is accessed by clicking the Step Response button in the RTM Analysis window The Step Response Analysis screen consists of Metering fields generator VA total vars and PF field voltage and field current An alarms window that displays any active alarms triggered by a step change Control buttons to start and stop step response analysis and a button to cl...

Page 205: ... or decrement down arrow button Step change setpoints can be entered in two setting fields Clicking the right arrow button beside one of the two fields initiates a step change to the corresponding setpoint value A button is provided to return the setpoint to its original value before any step changes were invoked This original value is the setpoint established in the Setpoints section of the BESTC...

Page 206: ...qually fit the available space History length is selectable from 1 to 30 minutes Poll rate is adjustable between 100 to 500 milliseconds Lowering the history and poll rate may also result in improved PC performance while plotting Place a check in the Sync Graph Scrolling box to sync scrolling between all graphs when any horizontal scroll bar is moved See Figure 164 Figure 163 Analysis Options Scre...

Page 207: ...ourth column contains the suspect parameter number SPN and the fifth column contains the broadcast rate for a parameter Table 16 CAN Parameters PGN Name Units SPN Broadcast Rate 0xFDA6 Generator Excitation Field Voltage Volts 3380 100 ms Generator Excitation Field Current Amps 3381 Generator Output Voltage Bias Percentage Percent 3382 0xFDA7 Voltage Regulator Load Compensation Mode n a 3375 1 s Vo...

Page 208: ...t 3 Byte 4 bits 6 7 Output 4 Byte 5 bits 0 1 Output 5 Byte 5 bits 2 3 Output 6 Byte 5 bits 4 5 Output 7 Byte 5 bits 6 7 Output 8 Byte 6 bits 0 1 Output 9 Byte 6 bits 2 3 Output 10 Byte 6 bits 4 5 Output 11 Byte 6 bits 6 7 Notes 0 Open 1 Closed 2 Reserved 3 Reserved n a n a 100 ms 0xFF01 Requested Generator Excitation Field Voltage FVR Setpoint Volts 3380 n a Requested Generator Excitation Field Cu...

Page 209: ...SPN The reported problem may not be an electrical failure but a subsystem condition needing to be reported to an operator or technician The OC contains the number of times that a fault has gone from active to previously active Table 17 Diagnostic Information Obtained Over CAN bus Interface 2 PGN Name 0xEA00 Request DTCs 0xFECA Currently Active DTCs 0xFECB Previously Active DTCs 0xFECC Clear Previo...

Page 210: ...194 9440300990 Rev J CAN Communication DECS 250 ...

Page 211: ...initiates communications on the Modbus and will always generate a response to the query unless certain error conditions occur The DECS 250 is designed to communicate on the Modbus network only as slave devices Refer to the Communication chapter for Modbus communication setup and the Terminals and Connectors chapter for wiring Message Structure Device Address Field The device address field contains...

Page 212: ...ice requests actions unable to be performed by the slave the slave response message contains an exception response code defining the error detected Exception response codes are quite often enhanced by the information found in the Error Details block of holding registers The Modbus protocol defines a simple Protocol Data Unit PDU independent of the underlying communication layers The mapping of the...

Page 213: ...Modbus Request Response Over TCP IP A dedicated header is used on TCP IP to identify the Modbus Application Data Unit It is called the MBAP header Modbus Application Protocol header This header provides some differences compared to the Modbus RTU application data unit used on a serial line The Modbus slave address field usually used on Modbus Serial Line is replaced by a single byte Unit Identifie...

Page 214: ...unicate to a Modbus or a Modbus serial line slave through a gateway between an Ethernet TCP IP network and a Modbus serial line This field is set by the Modbus Client in the request and must be returned with the same value in the response by the server Note All Modbus TCP ADU are sent via TCP on registered port 502 Error Handling and Exception Responses Any query received that contains a non exist...

Page 215: ...registers cannot exceed 125 without causing an error response with the exception code for an illegal function Response The response message contains the data queried The data block contains the block length in bytes followed by the data one Data Hi byte and one Data Lo byte for each requested register Reading an unassigned holding register returns a value of zero Device Address Function Code 03 he...

Page 216: ... Multiple Registers Function Code 16 are also ignored When the DECS 250 receives the restart communications query the listen only mode is removed Device Address Function Code 08 hex Subfunction Hi 00 hex Subfunction Lo 04 hex Data Hi xx don t care Data Lo xx don t care CRC Hi error check CRC Lo error check Preset Multiple Registers A preset multiple registers query could address multiple registers...

Page 217: ...the number of registers There is no response message when the query is a broadcast device address 0 Device Address Function Code 10 hex Starting Address Hi Starting Address Lo No of Registers Hi No of Registers Lo CRC Hi Error Check CRC Lo Error Check Preset Single Register A Preset Single Register query message requests a single register to be written If the query is a broadcast device address 0 ...

Page 218: ...itly stored yielding an effective precision of 24 bits The value of the floating point number is obtained by multiplying the binary mantissa times two raised to the power of the unbiased exponent The assumed bit of the binary mantissa has the value of 1 0 with the remaining 23 bits providing a fractional value Table 22 shows the floating point format Table 22 Floating Point Format Sign Exponent 12...

Page 219: ...ble where each row gives the name of specific bit mapped data such as 900 0 indicates bit 0 of register 900 is mapped to RF TRIG Short Integer Data Format Byte Character Data Format Uint8 The Modbus short integer data format uses a single holding register to represent an 8 bit data value The holding register high byte will always be zero Example The value 132 represented in short integer format is...

Page 220: ... shift After each shift the CRC register LSB is examined If the LSB is a 1 the CRC register is exclusive ORed with the fixed polynomial value A001 hex prior to the next shift Once all bytes of the message have undergone the above algorithm the CRC register will contain the message CRC value to be placed in the error check field Secure DECS 250 Login via Modbus To login to the DECS 250 via Modbus w...

Page 221: ...Breaker Status 40900 bit 4 Uint16 2 R True 1 False 0 Alarms Real Time Clock Alarm 40900 bit 5 Uint16 2 R True 1 False 0 Alarms Date Time Set Alarm 40900 bit 6 Uint16 2 R True 1 False 0 Alarms Firmware Change Alarm 40900 bit 7 Uint16 2 R True 1 False 0 Alarms Frequency out of range alarm 40900 bit 8 Uint16 2 R True 1 False 0 Alarms Ethernet link lost alarm 40900 bit 9 Uint16 2 R True 1 False 0 Alar...

Page 222: ... R True 1 False 0 DECS Control DECS start stop external 40903 bit 1 Uint16 2 R True 1 False 0 DECS Control Pre position 1 active 40903 bit 2 Uint16 2 R True 1 False 0 DECS Control Pre position 2 active 40903 bit 3 Uint16 2 R True 1 False 0 DECS Control Pre position 3 active 40903 bit 4 Uint16 2 R True 1 False 0 DECS Control Auto active 40903 bit 5 Uint16 2 R True 1 False 0 Field Overvoltage Block ...

Page 223: ...ection 2 Configurable Protection Threshold 2 Pickup 40906 bit 10 Uint16 2 R True 1 False 0 Configurable Protection 2 Configurable Protection Threshold 2 Trip 40906 bit 11 Uint16 2 R True 1 False 0 Configurable Protection 2 Configurable Protection Threshold 3 Pickup 40906 bit 12 Uint16 2 R True 1 False 0 Configurable Protection 2 Configurable Protection Threshold 3 Trip 40906 bit 13 Uint16 2 R True...

Page 224: ...rotection 7 Configurable Protection Threshold 3 Pickup 40909 bit 4 Uint16 2 R True 1 False 0 Configurable Protection 7 Configurable Protection Threshold 3 Trip 40909 bit 5 Uint16 2 R True 1 False 0 Configurable Protection 7 Configurable Protection Threshold 4 Pickup 40909 bit 6 Uint16 2 R True 1 False 0 Configurable Protection 7 Configurable Protection Threshold 4 Trip 40909 bit 7 Uint16 2 R True ...

Page 225: ...art Select Group 2 40912 bit 10 Uint16 2 R True 1 False 0 DECS Control PSS Select Group 2 40912 bit 11 Uint16 2 R True 1 False 0 DECS Control OEL Select Group 2 40912 bit 12 Uint16 2 R True 1 False 0 DECS Control UEL Select Group 2 40912 bit 13 Uint16 2 R True 1 False 0 DECS Control SCL Select Group 2 40912 bit 14 Uint16 2 R True 1 False 0 DECS Control Protect Select Group 2 40912 bit 15 Uint16 2 ...

Page 226: ... True 1 False 0 Contact Expansion Module Output 22 40915 bit 13 Uint16 2 R True 1 False 0 Contact Expansion Module Output 23 40915 bit 14 Uint16 2 R True 1 False 0 Contact Expansion Module Output 24 40915 bit 15 Uint16 2 R True 1 False 0 Network Load Share Network Load Share Disable 40916 bit 0 Uint16 2 R True 1 False 0 Alarms Invalid Logic Alarm 40916 bit 1 Uint16 2 R True 1 False 0 24 Block 4091...

Page 227: ...on 3 Threshold 2 Pickup 40918 bit 15 Uint16 2 R True 1 False 0 AEM Protection 3 Threshold 2 Trip 40919 bit 0 Uint16 2 R True 1 False 0 AEM Protection 3 Threshold 3 Pickup 40919 bit 1 Uint16 2 R True 1 False 0 AEM Protection 3 Threshold 3 Trip 40919 bit 2 Uint16 2 R True 1 False 0 AEM Protection 3 Threshold 4 Pickup 40919 bit 3 Uint16 2 R True 1 False 0 AEM Protection 3 Threshold 4 Trip 40919 bit 4...

Page 228: ...40922 bit 2 Uint16 2 R True 1 False 0 RTD Protection 1 Threshold 4 Pickup 40922 bit 3 Uint16 2 R True 1 False 0 RTD Protection 1 Threshold 4 Trip 40922 bit 4 Uint16 2 R True 1 False 0 RTD Protection 2 Threshold 1 Pickup 40922 bit 5 Uint16 2 R True 1 False 0 RTD Protection 2 Threshold 1 Trip 40922 bit 6 Uint16 2 R True 1 False 0 RTD Protection 2 Threshold 2 Pickup 40922 bit 7 Uint16 2 R True 1 Fals...

Page 229: ...p 40925 bit 6 Uint16 2 R True 1 False 0 RTD Protection 8 Threshold 2 Pickup 40925 bit 7 Uint16 2 R True 1 False 0 RTD Protection 8 Threshold 2 Trip 40925 bit 8 Uint16 2 R True 1 False 0 RTD Protection 8 Threshold 3 Pickup 40925 bit 9 Uint16 2 R True 1 False 0 RTD Protection 8 Threshold 3 Trip 40925 bit 10 Uint16 2 R True 1 False 0 RTD Protection 8 Threshold 4 Pickup 40925 bit 11 Uint16 2 R True 1 ...

Page 230: ...False 0 Network Load Share ID 6 Enabled 40928 bit 5 Uint16 2 R True 1 False 0 Network Load Share ID 7 Enabled 40928 bit 6 Uint16 2 R True 1 False 0 Network Load Share ID 8 Enabled 40928 bit 7 Uint16 2 R True 1 False 0 Network Load Share ID 9 Enabled 40928 bit 8 Uint16 2 R True 1 False 0 Network Load Share ID 10 Enabled 40928 bit 9 Uint16 2 R True 1 False 0 Network Load Share ID 11 Enabled 40928 bi...

Page 231: ...eter Primary Angle 1 VAB 41076 String 24 R n a 0 24 Gen Voltage Meter Primary Angle 1 VBC 41088 String 24 R n a 0 24 Gen Voltage Meter Primary Angle 1 VCA 41100 String 24 R n a 0 24 Bus Voltage Meter Magnitude 1 VAB 41112 Float 4 R Volt 0 2000000000 Bus Voltage Meter Magnitude 1 VBC 41114 Float 4 R Volt 0 2000000000 Bus Voltage Meter Magnitude 1 VCA 41116 Float 4 R Volt 0 2000000000 Bus Voltage Me...

Page 232: ... a 0 24 Generator Current Meter Primary Angle 1 IB 41276 String 24 R n a 0 24 Generator Current Meter Primary Angle 1 IC 41288 String 24 R n a 0 24 Icc Current Meter Magnitude 1 IX 41300 Float 4 R Amp 0 2000000000 Icc Current Meter Primary 1 IX 41302 Float 4 R Amp 0 2000000000 Power Meter Total watts secondary 41304 Float 4 R Watt n a Power Meter Total watts primary 41306 Float 4 R Watt n a Power ...

Page 233: ...eg F 40000 9999999 AEM Metering RTD Input 3 Scaled Value 41374 Float 4 R Deg F 40000 9999999 AEM Metering RTD Input 4 Scaled Value 41376 Float 4 R Deg F 40000 9999999 AEM Metering RTD Input 5 Scaled Value 41378 Float 4 R Deg F 40000 9999999 AEM Metering RTD Input 6 Scaled Value 41380 Float 4 R Deg F 40000 9999999 AEM Metering RTD Input 7 Scaled Value 41382 Float 4 R Deg F 40000 9999999 AEM Meterin...

Page 234: ...Bus Frequency Pickup 41460 Float 4 R n a 10 10 Per Unit Meter Ifd Pickup 41462 Float 4 R n a 10 10 Per Unit Meter Vfd Pickup 41464 Float 4 R n a 10 10 Per Unit Meter Slip Frequency Pickup 41466 Float 4 R n a 10 10 Per Unit Meter Icc Pickup 41468 Float 4 R n a 10 10 Per Unit Meter AVR Setpoint Pickup 41470 Float 4 R n a 10 10 Per Unit Meter FCR Setpoint Pickup 41472 Float 4 R n a 10 10 Per Unit Met...

Page 235: ...10 Float 4 R W Amp 0 30 OEL Primary Current Lo Off 41712 Float 4 R W Amp 0 15 OEL Primary Current Time Off 41714 Float 4 R W Second 0 10 OEL Primary Takeover Current Max Off 41716 Float 4 R W Amp 0 30 OEL Primary Takeover Current Min Off 41718 Float 4 R W Amp 0 15 OEL Primary Takeover Time Dial Off 41720 Float 4 R W n a 0 1 20 OEL Primary Takeover Current Max On 41722 Float 4 R W Amp 0 30 OEL Prim...

Page 236: ...egister 41760 10 10 V when 41760 1 58 482 F when 41760 2 8 OEL Scale Summing Scale 1 41780 Float 4 R W Percent 0 200 OEL Scale Summing Scale 2 41782 Float 4 R W Percent 0 200 OEL Scale Summing Scale 3 41784 Float 4 R W Percent 0 200 UEL Primary Curve X1 41786 Float 4 R W kilowatt 0 1 5 Rated kVA UEL Primary Curve X2 41788 Float 4 R W kilowatt 0 1 5 Rated kVA UEL Primary Curve X3 41790 Float 4 R W ...

Page 237: ...r Scale Volt or Deg F Adjustment range is determined by register 41846 10 10 V when 41846 1 58 482 F when 41846 2 8 SCL Scale Point 1 41854 Float 4 R W Percent 0 200 SCL Scale Point 2 41856 Float 4 R W Percent 0 200 SCL Scale Point 3 41858 Float 4 R W Percent 0 200 Var Limit Enable 41860 Uint32 4 R W n a Disabled 0 Enabled 1 Var Limit Primary Delay 41862 Float 4 R W Second 0 300 Var Limit Primary ...

Page 238: ...point Limit 42230 Float 4 R W Percent 70 120 Generator var Setpoint 42232 Float 4 R W kilovar Setpoint adjustment range determined by registers 42244 and 42246 Generator var Traverse Rate 42234 Float 4 R W Second 10 200 Generator var Pre position Mode 1 42236 Uint32 4 R W n a Maintain 0 Release 1 Generator var Pre position 1 42238 Float 4 R W kilovar Setpoint adjustment range determined by registe...

Page 239: ... range determined by registers 42276 and 42278 Active Field Current Regulation Setpoint 42306 Float 4 R W Amp Setpoint adjustment range determined by registers 42212 and 42214 Active Generator Voltage Setpoint 42308 Float 4 R W Volt Setpoint adjustment range determined by registers 42228 and 42230 When the With Limits box is checked on the Auxiliary Input screen in BESTCOMSPlus register 42308 equa...

Page 240: ... Element Settings Counter 5 Output Timeout 42440 Float 4 R W n a 0 1800 PLC Timed Element Settings Counter 6 Output Timeout 42442 Float 4 R W n a 0 1800 PLC Timed Element Settings Counter 7 Output Timeout 42444 Float 4 R W n a 0 1800 PLC Timed Element Settings Counter 8 Output Timeout 42446 Float 4 R W n a 0 1800 DECS PSS PSS Enable 42448 Uint32 4 R W n a Disabled 0 Enabled 1 DECS PSS PSS Enable S...

Page 241: ...us Volt Configuration Ratio Secondary 42628 Float 4 R W n a 1 600 Bus Volt Configuration Rated Primary LL 42630 Float 4 R W Volt 1 500000 Gen Current Configuration Ratio Primary 42632 Float 4 R W n a 1 99999 Gen Current Configuration Ratio Secondary 42634 Int32 4 R W n a 1 1 5 5 Gen Current Configuration Rated Primary 42636 Float 4 R Amp 0 180000 DECS Control Start Stop Request 42638 Uint32 4 R W ...

Page 242: ... Float 4 R W ms Instantaneous 0 5000 60000 Field Overcurrent Secondary Mode 43118 Uint32 4 R W n a Disabled 0 Enabled 1 Field Overcurrent Secondary Pickup 43120 Float 4 R W Amp Disabled 0 0 22 Field Overcurrent Secondary Time Delay 43122 Float 4 R W ms Instantaneous 0 5000 60000 Exciter Diode Monitor Exciter Open Diode Enable 43124 Uint32 4 R W n a Disabled 0 Enabled 1 Exciter Diode Monitor Excite...

Page 243: ...1U Primary Pickup 43216 Float 4 R W Hz Disabled 0 30 70 81U Primary Time Delay 43218 Float 4 R W ms 100 300000 81U Primary Voltage Inhibit 43220 Float 4 R W Disabled 0 50 100 81U Secondary Mode 43222 Uint32 4 R W n a Disabled 0 Under 2 81U Secondary Pickup 43224 Float 4 R W Hz Disabled 0 30 70 81U Secondary Time Delay 43226 Float 4 R W ms 100 300000 81U Secondary Voltage Inhibit 43228 Float 4 R W ...

Page 244: ...e 0 58 6 T do 4 0 Te 0 67 7 T do 4 5 Te 0 75 8 T do 5 0 Te 0 83 9 T do 5 5 Te 0 92 10 T do 6 0 Te 1 00 11 T do 6 5 Te 1 08 12 T do 7 0 Te 1 17 13 T do 7 5 Te 1 25 14 T do 8 0 Te 1 33 15 T do 8 5 Te 1 42 16 T do 9 0 Te 1 50 17 T do 9 5 Te 1 58 18 T do 10 0 Te 1 67 19 T do 10 5 Te 1 75 20 Custom 21 Secondary Gain Option 43802 Uint32 4 R W T do 1 0 Te 0 17 1 T do 1 5 Te 0 25 2 T do 2 0 Te 0 33 3 T do...

Page 245: ... 1 R n a n a Model Information Character 8 47008 Uint8 1 R n a n a Model Information Character 9 47009 Uint8 1 R n a n a Application Program Version Character 1 47010 Uint8 1 R n a n a Application Program Version Character 2 47011 Uint8 1 R n a n a Application Program Version Character 3 47012 Uint8 1 R n a n a Application Program Version Character 4 47013 Uint8 1 R n a n a Application Program Ver...

Page 246: ... n a n a Var PF Controller Output in Volts 47279 Float 4 R Per Unit n a Phase Angle Between Phase B Voltage and Current 47281 Float 4 R n a n a Auxiliary Input in Volts 47283 Float 4 R n a n a Current Input for Load Compensation 47285 Float 4 R n a n a Null Balance in Percent 47287 Float 4 R n a n a Error Signal to Autotracking Loop 47289 Float 4 R n a n a Active Controller Output 47291 Float 4 R ...

Page 247: ...1 5 5 Not used in DECS 250 47511 Float 4 R W n a Reserved Float 1 47513 Float 4 R n a 0 10000 Bus Sensing PT Primary Rating 47515 Float 4 R W n a 1 500000 Bus Sensing PT Secondary Rating 47517 Float 4 R W n a 1 600 Reserved 6 47519 Float 4 R n a n a Reserved 7 47521 Float 4 R n a n a Generator Rated Voltage 47523 Float 4 R W Volt 1 500000 Generator Rated Current 47525 Float 4 R Amp 0 180000 Genera...

Page 248: ...ggered Transfer to FCR mode Enable 47581 Uint16 2 R W n a Disabled 0 Enabled 1 Underfrequency or V Hz Mode Enable 47582 Uint16 2 R W n a UF Limiter 0 V Hz Limiter 1 External Tracking Enabled 47583 Uint16 2 R W n a Disabled 0 Enabled 1 OEL Style Virtual Toggle 47584 Uint16 2 R W n a Summing 0 Takeover 1 Reserved 16bit 32 47585 Uint16 2 R W n a 0 65535 PF var Option Status 47586 Uint16 2 R n a Off 0...

Page 249: ...89 Float 4 R n a n a Step Size for Var Adjustable Max 47691 Float 4 R n a n a Step Size for PF Adjustable Max 47693 Float 4 R n a n a FCR Pre Position Mode 47695 Uint16 2 R W n a Maintain 0 Release 1 AVR Pre Position Mode 47696 Uint16 2 R W n a Maintain 0 Release 1 Var Pre Position Mode 47697 Uint16 2 R W n a Maintain 0 Release 1 PF Pre Position Mode 47698 Uint16 2 R W n a Maintain 0 Release 1 FCR...

Page 250: ...ilovar 0 1 5 Rated kVA Third UEL Point kvar Value 47833 Float 4 R W kilovar 0 1 5 Rated kVA Fourth UEL Point kvar Value 47835 Float 4 R W kilovar 0 1 5 Rated kVA Fifth UEL Point kvar Value 47837 Float 4 R W kilovar 0 1 5 Rated kVA SCL High Limit Level 47839 Float 4 R W Amp 0 66000 Time Allowed at SCL High Limit Level 47841 Float 4 R W Second 0 60 SCL Low Limit Level 47843 Float 4 R W Amp 0 66000 T...

Page 251: ...925 Float 4 R W Volt Disabled 0 1 600000 Stator Overvoltage Level 47927 Float 4 R W Volt Disabled 0 0 600000 Field Overvoltage Delay 47929 Float 4 R W Millisecond Disabled 0 200 30000 Overcurrent Delay 47931 Float 4 R W Millisecond Disabled 0 5000 60000 Stator Undervoltage Delay 47933 Float 4 R W Millisecond 100 60000 Stator Overvoltage Delay 47935 Float 4 R W Millisecond 100 60000 Field Overvolta...

Page 252: ...141 Uint16 2 R W n a 0 65535 Reserved 16 bit 26 48161 Uint16 2 R n a 0 65535 Reserved 16 bit 27 48162 Uint16 2 R n a 0 65535 RS 232 Baud Rate 48163 Uint16 2 R W n a 1200 Baud 1200 2400 Baud 2400 4800 Baud 4800 9600 Baud 9600 19200 Baud 19200 38400 Baud 38400 57600 Baud 57600 RS 485 Baud Rate 48164 Uint16 2 R W n a 1200 Baud 1200 2400 Baud 2400 4800 Baud 4800 9600 Baud 9600 19200 Baud 19200 38400 B...

Page 253: ... Path Settings Communications Profibus Setup UINT8 Parameters listed in Table 39 as UINT8 types are bit packed binary data This allows transmission of up to eight single bit parameters in each byte of data When configuring an instance of UINT8 type parameters the data type is Input 1 byte and the size is determined by the number of parameters in the instance divided by eight rounding up to the nex...

Page 254: ...11 is two bytes Table 37 shows the parameters of instance 11 as they appear in Table 39 The first parameter in instance 11 with key name CONTACTOUTPUTS WATCHDOGOUTPUT is represented by the lowest bit in the first byte bit 0 The ninth parameter with key name CONTACTOUTPUTS OUTPUT8 is represented by the lowest bit in the second byte bit 0 The four highest bits in the second byte are unused and thus ...

Page 255: ...ler com 2 Using PLC configuration software import the GSD file This allows the DECS 250 to be included in the bus configuration as a slave 3 Assign a unique PROFIBUS address to the DECS 250 This allows the master to exchange data with the DECS 250 4 Select modules from the GSD file to be part of the data exchange Selecting the cyclic parameters is recommended The cyclic parameters are comprised of...

Page 256: ...yclic 3 Float R IX GG Amp 0 2000000000 Setpoint Metering Cyclic 4 Float R Gen Voltage Setpoint GG V 84 144 Setpoint Metering Cyclic 4 Float R Excitation Current Setpoint GG Amp 0 12 Setpoint Metering Cyclic 4 Float R Excitation Voltage Setpoint GG V 0 75 Setpoint Metering Cyclic 4 Float R Gen Var Setpoint GG kvar 0 41 57 Setpoint Metering Cyclic 4 Float R Gen Pf Setpoint GG PF 0 5 0 5 Synchronizer...

Page 257: ...puts Cyclic 10 UINT8 R CONTACTINPUTS STARTINPUT No Unit Open 0 Closed 1 Local Contact Inputs Cyclic 10 UINT8 R CONTACTINPUTS STOPINPUT No Unit Open 0 Closed 1 Local Contact Inputs Cyclic 10 UINT8 R Contact Inputs Input 1 No Unit Open 0 Closed 1 Local Contact Inputs Cyclic 10 UINT8 R Contact Inputs Input 2 No Unit Open 0 Closed 1 Local Contact Inputs Cyclic 10 UINT8 R Contact Inputs Input 3 No Unit...

Page 258: ...t Primary settings active 0 Secondary settings active 1 Settings Group Indication Cyclic 12 UINT8 R DECSCONTROL DECS SCL SELECT SECONDARY SETTINGS No Unit Primary settings active 0 Secondary settings active 1 Settings Group Indication Cyclic 12 UINT8 R DECSCONTROL DECS PROTECT SELECT SECONDARY SETTINGS No Unit Primary settings active 0 Secondary settings active 1 Settings Group Indication Cyclic 1...

Page 259: ...var pu GG No Unit 10 10 Bus Metering 20 Float R VAB GG Bus Voltage Magnitude V 0 2000000000 Bus Metering 20 Float R VBC GG Bus Voltage Magnitude V 0 2000000000 Bus Metering 20 Float R VCA GG Bus Voltage Magnitude V 0 2000000000 Bus Metering 20 Float R VAB GG Bus Voltage Angle Deg 0 360 Bus Metering 20 Float R VBC GG Bus Voltage Angle Deg 0 360 Bus Metering 20 Float R VCA GG Bus Voltage Angle Deg 0...

Page 260: ...No Unit FCR not active 0 FCR active 1 Control Panel Status 30 UINT8 R DECS Control DECS FVR Controller Active No Unit FVR not active 0 FVR active 1 Control Panel Status 30 UINT8 R DECS Control DECS VAR Controller Active No Unit VAR not active 0 VAR active 1 Control Panel Status 30 UINT8 R DECS Control DECS PF Controller Active No Unit PF not active 0 PF active 1 Control Panel Status 30 UINT8 R DEC...

Page 261: ...trol DECS VAR Controller Active No Unit VAR not active 0 VAR active 1 System Status 31 UINT8 R DECS Control DECS PF Controller Active No Unit PF not active 0 PF active 1 System Status 31 UINT8 R DECS Control DECS Auto Mode Enable No Unit Auto mode not enabled via PLC 0 Auto mode enabled via PLC 1 System Status 31 UINT8 R DECS Control DECS Manual Mode Enable No Unit Manual mode not enabled via PLC ...

Page 262: ...A AEM Analog Input Meter 34 Float R Analog Input 4 Raw Value GG V mA 0 10 V or 4 20 mA AEM Analog Input Meter 34 Float R Analog Input 5 Raw Value GG V mA 0 10 V or 4 20 mA AEM Analog Input Meter 34 Float R Analog Input 6 Raw Value GG V mA 0 10 V or 4 20 mA AEM Analog Input Meter 34 Float R Analog Input 7 Raw Value GG V mA 0 10 V or 4 20 mA AEM Analog Input Meter 34 Float R Analog Input 8 Raw Value...

Page 263: ...p No Unit Not tripped 0 Tripped 1 AEM Analog Input Status 35 UINT8 R AEM Protection 3 Thresh 4 Trip No Unit Not tripped 0 Tripped 1 AEM Analog Input Status 35 UINT8 R AEM Protection 4 Thresh 1 Trip No Unit Not tripped 0 Tripped 1 AEM Analog Input Status 35 UINT8 R AEM Protection 4 Thresh 2 Trip No Unit Not tripped 0 Tripped 1 AEM Analog Input Status 35 UINT8 R AEM Protection 4 Thresh 3 Trip No Uni...

Page 264: ...Input Meter 36 Float R RTD Input 3 Scaled Value GG Deg F n a AEM RTD Input Meter 36 Float R RTD Input 4 Scaled Value GG Deg F n a AEM RTD Input Meter 36 Float R RTD Input 5 Scaled Value GG Deg F n a AEM RTD Input Meter 36 Float R RTD Input 6 Scaled Value GG Deg F n a AEM RTD Input Meter 36 Float R RTD Input 7 Scaled Value GG Deg F n a AEM RTD Input Meter 36 Float R RTD Input 8 Scaled Value GG Deg ...

Page 265: ... No Unit Not tripped 0 Tripped 1 AEM RTD Input Status 37 UINT8 R RTD Protection 5 Thresh 2 Trip No Unit Not tripped 0 Tripped 1 AEM RTD Input Status 37 UINT8 R RTD Protection 5 Thresh 3 Trip No Unit Not tripped 0 Tripped 1 AEM RTD Input Status 37 UINT8 R RTD Protection 5 Thresh 4 Trip No Unit Not tripped 0 Tripped 1 AEM RTD Input Status 37 UINT8 R RTD Protection 6 Thresh 1 Trip No Unit Not tripped...

Page 266: ...put 3 No Unit Open 0 Closed 1 Contact Output Status 40 UINT8 R Contact Outputs Output 4 No Unit Open 0 Closed 1 Contact Output Status 40 UINT8 R Contact Outputs Output 5 No Unit Open 0 Closed 1 Contact Output Status 40 UINT8 R Contact Outputs Output 6 No Unit Open 0 Closed 1 Contact Output Status 40 UINT8 R Contact Outputs Output 7 No Unit Open 0 Closed 1 Contact Output Status 40 UINT8 R Contact O...

Page 267: ...ote Analog Output 2 Out of Range No Unit Value in range 0 Value out of range 1 AEM Analog Output Status 43 UINT8 R Remote Analog Output 3 Out of Range No Unit Value in range 0 Value out of range 1 AEM Analog Output Status 43 UINT8 R Remote Analog Output 4 Out of Range No Unit Value in range 0 Value out of range 1 Config Prot Status 44 UINT8 R Configurable Protection 1 Configurable Protection Thres...

Page 268: ...rot Status 44 UINT8 R Configurable Protection 6 Configurable Protection Threshold 1 Trip No Unit Not tripped 0 Tripped 1 Config Prot Status 44 UINT8 R Configurable Protection 6 Configurable Protection Threshold 2 Trip No Unit Not tripped 0 Tripped 1 Config Prot Status 44 UINT8 R Configurable Protection 6 Configurable Protection Threshold 3 Trip No Unit Not tripped 0 Tripped 1 Config Prot Status 44...

Page 269: ...g R App Build Date GG No Unit 0 25 characters AEM Device Info Serial 56 String R Serial Number GG No Unit 0 25 characters AEM Device Info App Part Number 57 String R App Part Number GG No Unit 0 25 characters AEM Device Info Model 58 String R Model Number GG No Unit 0 25 characters CEM Device Info App Version 59 String R App Version Number GG No Unit 0 25 characters CEM Device Info Boot Version 60...

Page 270: ...ent Traverse Rate GG Sec 10 200 FCR Setpoints 70 Float R W Excitation Current Setpoint GG Amp 0 12 FCR Setpoints 70 Float R W Excitation Current Min Setpoint Limit GG 0 120 FCR Setpoints 70 Float R W Excitation Current Max Setpoint Limit GG 0 120 FCR Setpoints 70 Float R W Excitation Current Preposition 1 GG Amp 0 12 FCR Setpoints 70 Float R W Excitation Current Preposition 2 GG Amp 0 12 FCR Setpo...

Page 271: ...R W Gen PF Traverse Rate GG Sec 10 200 PF Setpoints 76 Float R W Gen PF Setpoint GG PF 0 5 0 5 PF Setpoints 76 Float R W Gen PF Min Setpoint Limit GG PF 0 5 1 PF Setpoints 76 Float R W Gen Pf Max Setpoint Limit GG PF 1 0 5 PF Setpoints 76 Float R W Gen PF Preposition 1 GG PF 0 5 0 5 PF Setpoints 76 Float R W Gen PF preposition 2 GG PF 0 5 0 5 PF Setpoints 76 Float R W Gen PF Preposition 3 GG PF 0 ...

Page 272: ...S Auto Trans T Delay GG Sec 0 8 Auto Tracking 84 Float R W DECS Auto Trans T Rate GG Sec 1 80 Startup 86 Float R W Startup Primary Soft Start Bias GG 0 90 Startup 86 Float R W Startup Primary Soft Start Time GG Sec 1 7200 Startup 86 Float R W Startup Sec Soft Start Bias GG 0 90 Startup 86 Float R W Startup Sec Soft Start Time GG Sec 1 7200 Startup 86 Float R W DECS Field Flash Level GG No Unit 0 1...

Page 273: ...ns 88 Float R W AVR Kg Sec GG No Unit 0 1000 FCR Gains 90 Float R W FCR Kp GG No Unit 0 1000 FCR Gains 90 Float R W FCR Ki GG No Unit 0 1000 FCR Gains 90 Float R W FCR Kd GG No Unit 0 1000 FCR Gains 90 Float R W FCR Td GG No Unit 0 1 FCR Gains 90 Float R W FCR Kg GG No Unit 0 1000 FVR Gains 92 Float R W FVR Kp GG No Unit 0 1000 FVR Gains 92 Float R W FVR Ki GG No Unit 0 1000 FVR Gains 92 Float R W...

Page 274: ... Takeover 112 Float R W OEL Pri Takeover Cur Max Off GG Amp 0 30 OEL Takeover 112 Float R W OEL Pri Takeover Cur Min Off GG Amp 0 15 OEL Takeover 112 Float R W OEL Pri Takeover Time Dial Off GG No Unit 0 1 20 OEL Takeover 112 Float R W OEL Pri Takeover Cur Max On GG Amp 0 30 OEL Takeover 112 Float R W OEL Pri Takeover Cur Min On GG Amp 0 15 OEL Takeover 112 Float R W OEL Pri Takeover Time Dial On ...

Page 275: ...ings 120 Float R W SCL Pri Time Hi GG Sec 0 60 SCL Settings 120 Float R W SCL Pri No Response Time GG Sec 0 10 SCL Settings 120 Float R W SCL Sec Ref Hi GG Amp 0 66000 SCL Settings 120 Float R W SCL Sec Ref Lo GG Amp 0 66000 SCL Settings 120 Float R W SCL Sec Time Hi GG Sec 0 60 SCL Settings 120 Float R W SCL Sec No Response Time GG Sec 0 10 SCL Settings 120 Float R W Reserved n a n a SCL Settings...

Page 276: ... 0 3 Underfrequency Volts per Hertz 128 Float R W Sys Option Voltage Per Hz Slope Hi GG No Unit 0 3 Underfrequency Volts per Hertz 128 Float R W Sys Option Voltage Per Hz Slope Lo GG No Unit 0 3 Underfrequency Volts per Hertz 128 Float R W Sys Option Voltage Per Hz Slope Time GG Sec 0 10 PSS Configure 129 UINT32 R W Sys Option PSS Power Level Enable GG No Unit Disabled 0 Enabled 1 PSS Configure 13...

Page 277: ...S Sec Switch 2 GG No Unit Disabled 0 Enabled 1 PSS Control Secondary 134 Float R W PSS Sec Power On Threshold GG No Unit 0 1 PSS Control Secondary 134 Float R W PSS Sec Power Hysteresis GG No Unit 0 1 PSS Filter Parameter Primary Int 135 UINT32 R W PSS Primary Ramp Flt M GG No Unit 1 5 PSS Filter Parameter Primary Int 135 UINT32 R W PSS Primary Ramp Flt N GG No Unit 0 1 PSS Filter Parameter Primar...

Page 278: ...42 Float R W PSS Secondary Tlpf 3 GG Sec 0 05 0 2 PSS Parameter Secondary Filters Float 142 Float R W PSS Secondary Tr GG Sec 0 05 1 PSS Parameter Secondary Filters Float 142 Float R W PSS Secondary Tw1 GG Sec 1 20 PSS Parameter Secondary Filters Float 142 Float R W PSS Secondary Tw2 GG Sec 1 20 PSS Parameter Secondary Filters Float 142 Float R W PSS Secondary Tw3 GG Sec 1 20 PSS Parameter Seconda...

Page 279: ...Unit 0 0 5 PSS Output Limiter Secondary 150 Float R W PSS Secondary Limit Minus GG No Unit 0 5 0 PSS Output Limiter Secondary 150 Float R W PSS Secondary Ks GG No Unit 0 50 PSS Output Limiter Secondary 150 Float R W PSS Secondary Et Lmt Tlpf GG Sec 0 02 5 PSS Output Limiter Secondary 150 Float R W PSS Secondary Et Lmt Vref GG No Unit 0 10 PSS Output Limiter Secondary 150 Float R W PSS Secondary Tw...

Page 280: ...Gen Stable Under Voltage Pickup GG V 10 600000 Bus Condition Detection Gen Sensing 158 Float R W Gen Stable Under Voltage Dropout GG V 10 600000 Bus Condition Detection Gen Sensing 158 Float R W Gen Stable Over Frequency Pickup GG Hz 46 64 Bus Condition Detection Gen Sensing 158 Float R W Gen Stable Over Frequency Dropout GG Hz 46 64 Bus Condition Detection Gen Sensing 158 Float R W Gen Stable Und...

Page 281: ...0 99 9 Gen Undervoltage 163 UINT32 R W Mode PP No Unit Disabled 0 Enabled 1 Gen Undervoltage 163 UINT32 R W Mode PS No Unit Disabled 0 Enabled 1 Gen Undervoltage 164 Float R W Pickup PP V 1 600000 Gen Undervoltage 164 Float R W Time Delay PP ms 100 60000 Gen Undervoltage 164 Float R W Pickup PS V 1 600000 Gen Undervoltage 164 Float R W Time Delay PS ms 100 60000 Gen Undervoltage 165 UINT32 R W Mod...

Page 282: ...ge 178 Float R W Pickup PP V 1 325 Field Overvoltage 178 Float R W Time Delay PP ms 200 30000 Field Overvoltage 178 Float R W Pickup PS V 1 325 Field Overvoltage 178 Float R W Time Delay PS ms 200 30000 Field Overcurrent 179 UINT32 R W Mode PP No Unit Disabled 0 Enabled 1 Field Overcurrent 179 UINT32 R W Mode PS No Unit Disabled 0 Enabled 1 Field Overcurrent 180 Float R W Pickup PP Amp 0 22 Field ...

Page 283: ...nfig Protection 1 187 UINT32 R W Stop Mode Inhibit GG No Unit NO 0 YES 1 Config Protection 1 187 UINT32 R W Threshold 1 Type GG No Unit Disabled 0 Over 1 Under 2 Config Protection 1 187 UINT32 R W Threshold 2 Type GG No Unit Disabled 0 Over 1 Under 2 Config Protection 1 187 UINT32 R W Threshold 3 Type GG No Unit Disabled 0 Over 1 Under 2 Config Protection 1 187 UINT32 R W Threshold 4 Type GG No Un...

Page 284: ... Config Protection 2 190 Float R W Hysteresis GG 0 100 Config Protection 2 190 Float R W Arming Delay GG Sec 0 300 Config Protection 2 190 Float R W Threshold1Pickup GG No Unit 999999 999999 Config Protection 2 190 Float R W Threshold 1 Activation Delay GG Sec 0 300 Config Protection 2 190 Float R W Threshold 2 Pickup GG No Unit 999999 999999 Config Protection 2 190 Float R W Threshold 2 Activatio...

Page 285: ...IC 14 Gen I Average 15 KW Total 16 KVA Total 17 KVAR Total 18 EDM Ripple 19 Exciter Field Voltage 20 Exciter Field Current 21 Auxiliary Input Voltage 22 Auxiliary Input Current mA 23 Setpoint Position 24 Tracking Error 25 Neg Seq V 26 Neg Seq I 27 Pos Seq V 28 Pos Seq I 29 PSS Output 30 Analog Input 1 31 Analog Input 2 32 Analog Input 3 33 Analog Input 4 34 Analog Input 5 35 Analog Input 6 36 Anal...

Page 286: ...e 2 48 Config Protection 5 195 UINT32 R W Stop Mode Inhibit GG No Unit No 0 Yes 1 Config Protection 5 195 UINT32 R W Threshold 1 Type GG No Unit Disabled 0 Over 1 Under 2 Config Protection 5 195 UINT32 R W Threshold 2 Type GG No Unit Disabled 0 Over 1 Under 2 Config Protection 5 195 UINT32 R W Threshold 3 Type GG No Unit Disabled 0 Over 1 Under 2 Config Protection 5 195 UINT32 R W Threshold 4 Type...

Page 287: ... Config Protection 6 198 Float R W Hysteresis GG 0 100 Config Protection 6 198 Float R W Arming Delay GG Sec 0 300 Config Protection 6 198 Float R W Threshold 1 Pickup GG No Unit 999999 999999 Config Protection 6 198 Float R W Threshold 1 Activation Delay GG Sec 0 300 Config Protection 6 198 Float R W Threshold 2 Pickup GG No Unit 999999 999999 Config Protection 6 198 Float R W Threshold 2 Activat...

Page 288: ...Gen IC 14 Gen I Average 15 KW Total 16 KVA Total 17 KVAR Total 18 EDM Ripple 19 Exciter Field Voltage 20 Exciter Field Current 21 Auxiliary Input Voltage 22 Auxiliary Input Current mA 23 Setpoint Position 24 Tracking Error 25 Neg Seq V 26 Neg Seq I 27 Pos Seq V 28 Pos Seq I 29 PSS Output 30 Analog Input 1 31 Analog Input 2 32 Analog Input 3 33 Analog Input 4 34 Analog Input 5 35 Analog Input 6 36 ...

Page 289: ...mote Analog In 1 204 Float R W Current Min GG mA 4 20 Remote Analog In 1 204 Float R W Current Max GG mA 4 20 Remote Analog In 1 204 Float R W Voltage Min GG V 0 10 Remote Analog In 1 204 Float R W Voltage Max GG V 0 10 Remote Analog In 2 205 UINT32 R W Stop Mode Inhibit GG No Unit No 0 Yes 1 Remote Analog In 2 205 UINT32 R W Threshold1Type GG No Unit Disabled 0 Over 1 Under 2 Remote Analog In 2 2...

Page 290: ...Min GG mA 4 20 Remote Analog In 3 208 Float R W Current Max GG mA 4 20 Remote Analog In 3 208 Float R W Voltage Min GG V 0 10 Remote Analog In 3 208 Float R W Voltage Max GG V 0 10 Remote Analog In 4 209 UINT32 R W Stop Mode Inhibit GG No Unit No 0 Yes 1 Remote Analog In 4 209 UINT32 R W Threshold 1Type GG No Unit Disabled 0 Over 1 Under 2 Remote Analog In 4 209 UINT32 R W Threshold 2Type GG No Un...

Page 291: ...n 5 212 Float R W Current Max GG mA 4 20 Remote Analog In 5 212 Float R W Voltage Min GG V 0 10 Remote Analog In 5 212 Float R W Voltage Max GG V 0 10 Remote Analog In 6 213 UINT32 R W Stop Mode Inhibit GG No Unit No 0 Yes 1 Remote Analog In 6 213 UINT32 R W Threshold 1 Type GG No Unit Disabled 0 Over 1 Under 2 Remote Analog In 6 213 UINT32 R W Threshold 2 Type GG No Unit Disabled 0 Over 1 Under 2...

Page 292: ...4 20 Remote Analog In 7 216 Float R W Voltage Min GG V 0 10 Remote Analog In 7 216 Float R W Voltage Max GG V 0 10 Remote Analog In 8 217 UINT32 R W Stop Mode Inhibit GG No Unit No 0 Yes 1 Remote Analog In 8 217 UINT32 R W Threshold 1 Type GG No Unit Disabled 0 Over 1 Under 2 Remote Analog In 8 217 UINT32 R W Threshold 2 Type GG No Unit Disabled 0 Over 1 Under 2 Remote Analog In 8 217 UINT32 R W T...

Page 293: ...No Unit Disabled 0 Over 1 Under 2 Remote RTD In 2 221 UINT32 R W Threshold 3 Type GG No Unit Disabled 0 Over 1 Under 2 Remote RTD In 2 221 UINT32 R W Threshold 4 Type GG No Unit Disabled 0 Over 1 Under 2 Remote RTD In 2 222 Float R W Cal Offset GG Deg F 99999 99999 Remote RTD In 2 222 Float R W Hysteresis GG 0 100 Remote RTD In 2 222 Float R W Arming Delay GG Sec 0 300 Remote RTD In 2 222 Float R ...

Page 294: ...hreshold 3 Pickup GG Deg F 58 482 Remote RTD In 4 226 Float R W Threshold 3 Activation Delay GG Sec 0 300 Remote RTD In 4 226 Float R W Threshold 4 Pickup GG Deg F 58 482 Remote RTD In 4 226 Float R W Threshold 4 Activation Delay GG Sec 0 300 Remote RTD In 5 227 UINT32 R W Type GG No Unit 10 Ohm Cu 0 100 Ohm Pt 1 Remote RTD In 5 227 UINT32 R W Stop Mode Inhibit GG No Unit No 0 Yes 1 Remote RTD In ...

Page 295: ...R W Threshold 4 Type GG No Unit Disabled 0 Over 1 Under 2 Remote RTD In 7 232 Float R W Cal Offset GG Deg F 99999 99999 Remote RTD In 7 232 Float R W Hysteresis GG 0 100 Remote RTD In 7 232 Float R W Arming Delay GG Sec 0 300 Remote RTD In 7 232 Float R W Threshold 1 Pickup GG Deg F 58 482 Remote RTD In 7 232 Float R W Threshold 1 Activation Delay GG Sec 0 300 Remote RTD In 7 232 Float R W Thresho...

Page 296: ...ay GG Sec 0 300 Remote TC In 1 236 Float R W Threshold 3 Pickup GG Deg F 32 2507 Remote TC In 1 236 Float R W Threshold 3 Activation Delay GG Sec 0 300 Remote TC In 1 236 Float R W Threshold 4 Pickup GG Deg F 32 2507 Remote TC In 1 236 Float R W Threshold 4 Activation Delay GG Sec 0 300 Remote TC In 2 237 UINT32 R W Stop Mode Inhibit GG No Unit No 0 Yes 1 Remote TC In 2 237 UINT32 R W Threshold 1 ...

Page 297: ...1 240 Float R W Current Max GG mA 4 20 Remote Analog Out 1 240 Float R W Voltage Min GG V 0 10 Remote Analog Out 1 240 Float R W Voltage Max GG V 0 10 Remote Analog Out 2 241 UINT32 R W Param Selection GG No Unit Gen VAB 0 Gen VBC 1 Gen VCA 2 Gen V Average 3 Bus Freq 4 Bus VAB 5 Bus VBC 6 Bus VCA 7 Gen Freq 8 Gen PF 9 KWH 10 KVARH 11 Gen IA 12 Gen IB 13 Gen IC 14 Gen I Average 15 KW Total 16 KVA T...

Page 298: ...999 99999 Remote Analog Out 3 244 Float R W Current Min GG mA 4 20 Remote Analog Out 3 244 Float R W Current Max GG mA 4 20 Remote Analog Out 3 244 Float R W Voltage Min GG V 0 10 Remote Analog Out 3 244 Float R W Voltage Max GG V 0 10 Remote Analog Out 4 245 UINT32 R W Param Selection GG No Unit Gen VAB 0 Gen VBC 1 Gen VCA 2 Gen V Average 3 Bus Freq 4 Bus VAB 5 Bus VBC 6 Bus VCA 7 Gen Freq 8 Gen ...

Page 299: ...loat R W Programmable Alarm 11 Delay GG Sec 0 300 User Programmable Alarms 248 Float R W Programmable Alarm 12 Delay GG Sec 0 300 User Programmable Alarms 248 Float R W Programmable Alarm 13 Delay GG Sec 0 300 User Programmable Alarms 248 Float R W Programmable Alarm 14 Delay GG Sec 0 300 User Programmable Alarms 248 Float R W Programmable Alarm 15 Delay GG Sec 0 300 User Programmable Alarms 248 F...

Page 300: ... 252 Float R W Counter 6 Output Timeout GG No Unit 0 1800 Logic Counters 252 Float R W Counter 7 Output Timeout GG No Unit 0 1800 Logic Counters 252 Float R W Counter 8 Output Timeout GG No Unit 0 1800 AEM RTD TC Metric Meter 253 Float R RTD Input 1 Metric Value GG Deg C n a AEM RTD TC Metric Meter 253 Float R RTD Input 2 Metric Value GG Deg C n a AEM RTD TC Metric Meter 253 Float R RTD Input 3 Me...

Page 301: ...immediately DECS 250 store it in the original shipping package in a moisture and dust free environment Preventive Maintenance Connections Periodically check the connections of the to ensure they are clean and tight and remove any accumulation of dust Electrolytic Capacitors The 50 contains long life aluminum electrolytic capacitors For a DECS 250 kept in storage as a spare the life of these capaci...

Page 302: ... number Lxxxxxx have an input voltage range of 16 to 60 Vdc Units with style number Cxxxxxx have an input voltage range of 90 to 150 Vdc or 82 to 132 Vac 50 60 Hz Note When both ac and dc control power is used an isolation transformer must be connected between the ac voltage source and the ac control power terminals of the DECS 250 Display Blank or Frozen If the front panel display LCD is blank or...

Page 303: ...partment for advice Protection or Limit Annunciation If a protection function or limiting function is annunciated check the associated setting values If the problem persists contact the Basler Electric Technical Sales Support department for advice HMI Meter Readings Incorrect If your PF var or watt readings are significantly different from the expected readings for a known load verify that the B p...

Page 304: ...288 9440300990 Rev J Maintenance DECS 250 ...

Page 305: ...required to obtain 32 63 and 125 Vdc continuous field power for the DECS 250 Table 40 Operating Power Requirements Excitation Power 32 Vdc 63 Vdc 125 Vdc Input Power Configuration 1 or 3 phase 1 or 3 phase 1 or 3 phase Nominal Input Voltage 60 Vac 120 Vac 240 Vac Full Load Continuous Voltage 32 Vdc 63 Vdc 125 Vdc Full Load Continuous Current 15 Adc Minimum Residual Voltage for Buildup 6 Vac Operat...

Page 306: ...ng Voltage Nominal Input Range 100 Vac 90 to 110 Vac 200 Vac 180 to 220 Vac 400 Vac 360 to 440 Vac 60 Hz Sensing Voltage Nominal Input Range 120 Vac 108 to 132 Vac 240 Vac 216 to 264 Vac 480 Vac 432 to 528 Vac 600 Vac 540 to 660 Vac Generator Current Sensing Configuration 4 inputs A B C phase and cross current compensation CT input Type 1 phase B phase 1 phase with cross current compensation 3 pha...

Page 307: ...OM A Programmable Input 6 IN 6 COM A Programmable Input 7 IN 7 COM B Programmable Input 8 IN 8 COM B Programmable Input 9 IN 9 COM B Programmable Input 10 IN 10 COM B Programmable Input 11 IN 11 COM B Programmable Input 12 IN 12 COM B Programmable Input 13 IN 13 COM B Programmable Input 14 IN 14 COM B Communication Ports Universal Serial Bus USB Interface USB type B port Location Front panel Cauti...

Page 308: ...mmunication Rate 250 kb s IRIG Time Synchronization Input Standard 200 98 Format B002 and 200 04 Format B006 Input Signal Demodulated dc level shifted signal Logic High Level 3 5 Vdc minimum Logic Low Level 0 5 Vdc maximum Input Voltage Range 10 to 10 Vdc Input Resistance Nonlinear approximately 4 kΩ at 3 5 Vdc 3 kΩ at 20 Vdc Response Time 1 cycle Terminals IRIG IRIG Contact Outputs Make and Break...

Page 309: ...e nominal value for 10 of the power input voltage change or 20 of the field resistance change Otherwise 5 0 AVR Operating Mode Setpoint Range 70 to 120 of rated generator voltage in increments of 0 1 Regulation Accuracy 0 25 over load range at rated PF with constant generator frequency and ambient temperature Steady State Stability 0 25 at rated PF with constant generator frequency and ambient tem...

Page 310: ...30 of Primary CT Current Generator Protection Functions Overvoltage 59 and Undervoltage 27 Pickup Range 1 to 600 000 Vac Increment 1 Vac Time Delay Range 0 1 to 60 s Increment 0 1 s Loss of Sensing Time Delay Range 0 to 30 s Increment 0 1 s Voltage Balanced Level Range 0 to 100 of Positive Sequence Voltage Increment 0 1 Voltage Unbalanced Level Range 0 to 100 of Positive Sequence Voltage Increment...

Page 311: ...ement 0 1 s Field Protection Functions Field Overvoltage Pickup Range 1 to 325 Vdc Increment 1 Vdc Time Delay Range 0 2 to 30 s Increment 0 1 s Field Overcurrent Pickup Range 0 to 22 Adc Increment 0 1 Adc Time Delay Range 5 to 60 s Increment 0 1 s Loss of PMG Pickup Single Phase Source 10 Vac Three Phase Source 50 Vac or a phase to phase imbalance 20 Time Delay Range 0 to 10 s Increment 0 1 s Exci...

Page 312: ... 50 Increment 1 Slip Angle Range 1 to 99 Increment 0 1 Slip Frequency Range 0 01 to 0 5 Hz Increment 0 01 Hz Startup Soft Start Level Range 0 to 90 of Rated Gen Voltage Increment 1 Soft Start Time Range 1 to 7 200 s Increment 1 s Field Flash Dropout Level Range 0 to 100 of Rated Gen Voltage Increment 1 Maximum Field Flash Time Range 1 to 50 s Increment 1 s Voltage Matching Accuracy Generator rms v...

Page 313: ...igh Current Level Pickup Range 0 to 30 Adc Increment 0 1 Adc Time Range 0 to 10 s Increment 1 s Low Current Level Pickup Range 0 to 15 Adc Increment 0 1 Adc Sequence of Events Recording SER Over 1 000 records are stored in nonvolatile memory retrievable via BESTCOMSPlus The SER can be triggered by Input Output status changes system operating status changes or alarm annunciations Data Logging Oscil...

Page 314: ...l provide the user with many years of reliable service HALT subjects the device to extremes in temperature shock and vibration to simulate years of operation but in a much shorter period HALT allows Basler Electric to evaluate all possible design elements that will add to the life of this device As an example of some of the extreme testing conditions the DECS 250 was subjected to temperature tests...

Page 315: ...6200 CSA Certification This product was tested and has met the certification requirements for electrical plumbing and or mechanical products Standards used for evaluation CSA C22 2 No 0 CSA C22 2 No 14 CE Compliance This product has been evaluated and complies with the relevant essential requirements set forth by the EU legislation EC Directives LVD 2014 35 EU EMC 2004 108 EC Harmonized standards ...

Page 316: ...300 9440300990 Rev J Specifications DECS 250 ...

Page 317: ...tains eight programmable analog inputs Rating 4 to 20 mA or 0 to 10 Vdc user selectable Burden 4 to 20 mA 470 Ω maximum 0 to 10 Vdc 9 65k Ω minimum RTD Inputs The AEM 2020 contains eight programmable RTD inputs Rating 100 Ω Platinum or 10 Ω Copper user selectable Setting Range 50 to 250 C or 58 to 482 F Accuracy 10 Ω Copper 0 044 Ω 25 C 0 005 Ω C drift over ambient temperature Accuracy 100 Ω Plati...

Page 318: ...sign elements that will add to the life of this device As an example of some of the extreme testing conditions the AEM 2020 was subjected to temperature tests tested over a temperature range of 80 C to 130 C vibration tests of 5 to 50 G at 25 C and temperature vibration tests tested at 10 to 20 G over a temperature range of 60 C to 100 C Combined temperature and vibration testing at these extremes...

Page 319: ...immediately file a claim with the carrier and notify the Basler Electric regional sales office your sales representative or a sales representative at Basler Electric Highland Illinois USA If the device is not installed immediately store it in the original shipping package in a moisture and dust free environment Mounting Analog Expansion Modules are contained in a potted plastic case and may be mou...

Page 320: ...ound terminal on the module Terminations The terminal interface consists of both plug in connectors and a permanently mounted connector with screw down compression terminals AEM 2020 connections are made with one 5 position connector two 12 position connectors two 16 position connectors and two 2 position thermocouple connectors The 16 5 and 2 position connectors plug into headers on the AEM 2020 ...

Page 321: ... in lb 0 56 N m Operating Power The Analog Expansion Module operating power input accepts either 12 Vdc or 24 Vdc and tolerates voltage over the range of 6 to 32 Vdc Operating power must be of the correct polarity Although reverse polarity will not cause damage the AEM 2020 will not operate Operating power terminals are listed in Table 41 It is recommended that a fuse be added for additional prote...

Page 322: ...rating Power and CAN bus P2 RTD Inputs 1 4 P3 Analog Inputs 1 8 and Analog Outputs 1 4 P4 Thermocouple 1 Input P5 Thermocouple 2 Input P6 RTD Inputs 5 8 External Analog Input Connections Voltage input connections are shown in Figure 169 and current input connections are shown in Figure 170 When using the current input AIN V and AIN I must be tied together ...

Page 323: ...xpansion Module Figure 169 Analog Inputs Voltage Input Connections Figure 170 Analog Inputs Current Input Connections AIN I AIN AIN V AEM 2020 P0059 78 0 10 Vdc Voltage Transducer AIN I AIN AIN V AEM 2020 P0059 79 4 20 mA Current Transducer ...

Page 324: ... the SAE J1939 protocol and provide high speed communication between the Analog Expansion Module and the DECS 250 Connections between the AEM 2020 and DECS 250 should be made with twisted pair shielded cable CAN Bus interface terminals are listed in Table 43 Refer to Figure 173 and Figure 174 Table 43 CAN bus Interface Terminals Terminal Description P1 HI CAN H CAN high connection yellow wire P1 L...

Page 325: ...length not including stubs is 40 m 131 ft 4 The J1939 drain shield should be grounded at one point only If grounded elsewhere do not connect the drain to the AEM 2020 Figure 173 CAN Bus Interface with AEM 2020 providing One End of the Bus Figure 174 CAN Bus Interface with DECS 250 providing One End of the Bus CEM 2020 Optional AEM 2020 Other Devices P0064 08 Genset 120 ohm Termination CAN H CAN L ...

Page 326: ...threshold monitoring in one of two ways 1 When the arming delay is set to zero threshold monitoring is performed all the time whether or not excitation is enabled 2 When the arming delay is set to a non zero value threshold monitoring begins when the arming delay time has expired after system startup is complete An out of range alarm configured on the Alarm Configuration Alarms screen in BESTCOMSP...

Page 327: ...00 s in 1 s increments RTD Inputs BESTCOMSPlus Navigation Path Settings Programmable Inputs Remote RTD Inputs HMI Navigation Path Settings Programmable Inputs Remote RTD Inputs The AEM 2020 provides eight user configurable RTD inputs that can annunciate a latching or non latching alarm The RTD inputs are always monitored and their status is displayed on the appropriate metering screens To make ide...

Page 328: ...No F Mode Disabled Over or Under G Threshold 58 to 482 F in 1 F increments H Activation Delay Adjustable from 0 to 300 s in 1 s increments Thermocouple Inputs BESTCOMSPlus Navigation Path Settings Programmable Inputs Remote Thermocouple Inputs HMI Navigation Path Settings Programmable Inputs Remote Thermocouple Inputs The AEM 2020 provides two thermocouple inputs The thermocouple inputs are always...

Page 329: ...ts D Stop Mode Inhibit Yes or No E Mode Disabled Over or Under F Threshold Adjustable from 32 to 2 507 F in 1 F increments G Activation Delay Adjustable from 0 to 300 s in 1 s increments Analog Outputs BESTCOMSPlus Navigation Path Settings Programmable Outputs Remote Analog Outputs HMI Navigation Path Settings Programmable Outputs Remote Analog Outputs The AEM 2020 provides four analog outputs Mak...

Page 330: ...tivation Delay Adjustable from 0 to 300 s in 1 s increments D Param Min Adjustable from 999 999 0 to 999 999 0 in increments of 0 1 E Min Output Current Adjustable from 4 to 20 mA in 0 1 mA increments F Min Output Voltage Adjustable from 0 to 10 V in 0 1 V increments G Param Max Adjustable from 999 999 0 to 999 999 0 in increments of 0 1 H Max Output Current Adjustable from 4 to 20 mA in 0 1 mA in...

Page 331: ...sponding LED is green Refer to Figure 182 Remote Thermocouple Input 1 is shown Figure 182 Remote Thermocouple Inputs Metering Analog Input Values BESTCOMSPlus Navigation Path Metering Status Inputs Remote Analog Input Values HMI Navigation Path Metering Status Inputs Remote Analog Input Values The values of the scaled analog inputs raw analog inputs RTD input temperatures raw RTD inputs thermocoup...

Page 332: ...hen connected to a the Calibrate button shown on the Remote Analog Input Values screen opens the Analog Input Temperature Calibration screen shown in Figure 184 This screen is used to calibrate RTD inputs 1 through 8 and thermocouple inputs 1 and 2 Figure 184 Remote Analog Input Temperature Calibration ...

Page 333: ... settings in BESTCOMSPlus The status is TRUE when the corresponding LED is green Refer to Figure 185 Figure 185 Remote Analog Outputs Metering Maintenance Preventive maintenance consists of periodically checking that the connections between the AEM 2020 and the system are clean and tight Analog Expansion Modules are manufactured using state of the art surface mount technology As such Basler Electr...

Page 334: ...318 9440300990 Rev J Analog Expansion Module DECS 250 ...

Page 335: ... Operating Power Nominal 12 or 24 Vdc Range 8 to 32 Vdc Withstands ride through down to 6 Vdc for 500 ms Maximum Consumption CEM 2020 14 W CEM 2020H 8 W Contact Inputs The CEM 2020 contains 10 programmable inputs that accept normally open and normally closed dry contacts Contact Outputs Ratings CEM 2020 Outputs 12 through 23 1 Adc at 30 Vdc Form C gold contacts Outputs 24 through 35 4 Adc at 30 Vd...

Page 336: ...sted at 10 to 20 G over a temperature range of 60 C to 100 C Combined temperature and vibration testing at these extremes proves that the CEM 2020 is expected to provide long term operation in a rugged environment Note that the vibration and temperature extremes listed in this paragraph are specific to HALT and do not reflect recommended operation levels These operational ratings are included in t...

Page 337: ...presentative or a sales representative at Basler Electric Highland Illinois USA If the device is not installed immediately store it in the original shipping package in a moisture and dust free environment Mounting Contact Expansion Modules are contained in a potted plastic case and may be mounted in any convenient position The construction of a Contact Expansion Module is durable enough to mount d...

Page 338: ... 9440300990 Rev J Contact Expansion Module DECS 250 Figure 186 CEM 2020 Overall Dimensions See Figure 187 for CEM 2020H overall dimensions All dimensions are shown in inches with millimeters in parenthesis ...

Page 339: ...he terminal interface consists of plug in connectors with screw down compression terminals CEM 2020 connections are made with one 5 position connector two 18 position connectors and two 24 position connectors with screw down compression terminals These connectors plug into headers on the CEM 2020 The connectors and headers have dovetailed edges that ensure proper connector orientation Also the con...

Page 340: ...re listed in Table 44 It is recommended that a fuse be added for additional protection for the wiring to the battery input of the Contact Expansion Module A Bussmann ABC 7 fuse or equivalent is recommended Table 44 Operating Power Terminals Terminal Description P1 SHIELD Chassis ground connection P1 BATT Negative side of operating power input P1 BATT Positive side of operating power input Contact ...

Page 341: ...9440300990 Rev J 325 DECS 250 Contact Expansion Module Figure 188 CEM 2020 Input Contact and Output Contact Terminals ...

Page 342: ...ed communication between the Contact Expansion Module and the DECS 250 Connections between the CEM 2020 and DECS 250 should be made with twisted pair shielded cable CAN Bus interface terminals are listed in Table 45 Refer to Figure 190 and Figure 191 Table 45 CAN Bus Interface Terminals Terminal Description P1 HI CAN H CAN high connection yellow wire P1 LO CAN L CAN low connection green wire P1 SH...

Page 343: ...length not including stubs is 40 m 131 ft 4 The J1939 drain shield should be grounded at one point only If grounded elsewhere do not connect the drain to the CEM 2020 Figure 190 CAN Bus Interface with CEM 2020 providing One End of the Bus Figure 191 CAN Bus Interface with DECS 250 providing One End of the Bus AEM 2020 Optional CEM 2020 Other Devices P0064 06 Genset 120 ohm Termination CAN H CAN L ...

Page 344: ...ule Setup Functional Description Contact Inputs BESTCOMSPlus Navigation Path Settings Programmable Inputs Remote Contact Inputs HMI Navigation Path Settings Programmable Inputs Remote Contact Inputs The CEM 2020 provides 10 programmable contact inputs with the same functionality as the contact inputs on the DECS 250 The label text of each contact input is customizable and accepts an alphanumeric c...

Page 345: ...carry 4 A The CEM 2020H provides 18 programmable contact outputs with the same functionality as the contact outputs on the DECS 250 Outputs 12 through 23 can carry 2 A Outputs 24 through 29 can carry 10 A The label text of each contact output is customizable and accepts an alphanumeric character string with a maximum of 64 characters The remote analog outputs are incorporated into a BESTlogicPlus ...

Page 346: ...Navigation Path Metering Status Outputs Remote Contact Outputs The value and status of the remote contact outputs are shown on this screen The status is TRUE when the corresponding LED is green Refer to Figure 196 Figure 196 Remote Contact Outputs Metering Maintenance Preventive maintenance consists of periodically checking that the connections between the CEM 2020 and the system are clean and tig...

Page 347: ...temperature to 70 C Added GND terminal to power connector L Sep 14 Improved hardware on the PowerPC board M Oct 14 Re designed analog board to provide clearance for chassis screws N Feb 15 Released firmware version 1 03 00 and BESTCOMSPlus version 3 08 00 O This revision letter not used P Feb 15 Released firmware version 1 03 00 and BESTCOMSPlus version 3 08 00 Table 47 Firmware Revision History F...

Page 348: ...ay PF is scaled when used for an analog output Modified display of setpoints Modified datalog to trigger on contact input open Added PF Active Power Level to Modbus Expanded the range for analog outputs to 999 999 to 999 999 Added Modbus registers for AEM 2020 alarms Modified unsecured access level security Modified communication with IDP 800 Modified total VA and total PF calculations Modified fr...

Page 349: ...chemes with PSS 3 08 02 Mar 15 Maintenance release DGC 2020HD changes Table 49 Instruction Manual Revision History Manual Revision and Date Change B Oct 12 Initial release C Nov 12 Updated operating temperature and frequency specifications D Jul 13 Added maritime agency recognitions BV DNV GL Clarified online OEL and low level SCL limiting conditions Improved the description of the BESTCOMSPlus co...

Page 350: ...nt holes to chassis H Feb 15 Added support for DECS 250 firmware version 1 03 00 and BESTCOMSPlus version 3 08 00 Changed layout of Auxiliary Control Gains section and added equations in the Auxiliary Control chapter Added Off Page Objects description in the BESTlogicPlus chapter Cleaned up various Modbus register names and descriptions in the Modbus chapter Added Modbus registers for AEM Configur...

Page 351: ......

Page 352: ...dex FRANCE Tel 33 3 88 87 1010 Fax 33 3 88 87 0808 email franceinfo basler com No 59 Heshun Road Loufeng District N Suzhou Industrial Park 215122 Suzhou P R CHINA Tel 86 512 8227 2880 Fax 86 512 8227 2887 email chinainfo basler com 111 North Bridge Road 15 06 Peninsula Plaza Singapore 179098 Tel 65 68 44 6445 Fax 65 68 44 8902 email singaporeinfo basler com ...

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