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DATAKOM                                                                                 DKG-705 User’s Manual

 

 

 

705_USER.doc 

 

- 27 -   

 

9. DUAL GENSET PARALLEL OPERATION 

 

 

The DKG-705 is able to work in Dual Genset Parallel mode without any hardware or software 

modifications. The only additional accessory needed is a simple RS-232 serial data cable. 

 

 

The units used in paralleling are standard DKG-705s with standard software, which permits very 

low cost synchronization applications. 

 

The basic features are: 

 

 

 

-simple and cost effective application, 

 

 

-adaptation to all kinds of AVR and GOV controllers without extra hardware, 

 

 

-different power ratings acceptable for both gensets, 

 

 

-single genset load enabling, 

 

 

-slave genset run/stop depending on user defined power levels and time delays, 

 

 

-equal aging: automatic master/slave switching depending on ‘

Engine Hours to Service

’, 

 

 

-automatic master/slave switching in case of failure of the Master unit, 

 

 

-manual master/slave switching allowed, 

 

 

-predefined Master unit without the need for AVR and GOV controls on master, 

 

 

-synchronization with mains: uninterrupted transfer to/from mains, 

 

 

-load share with mains: soft transfer to/from mains. 

 

 

 

Please refer to the 

DKG-705 Dual Genset Parallel Application Manual

 for a detailed application 

guide.

Summary of Contents for DKG-705

Page 1: ...mable relay outputs 7 I O expansion capability LCD display 4 lines by 20 characters Periodic maintenance request indicator True RMS AC measurements Built in exerciser Remote Start capability Statistic...

Page 2: ...tion mode 5 2 Remote start operation 6 SYNCHRONIZING WITH MAINS 6 1 Governor Control 6 2 AVR Control 7 LOAD TRANSFER MODES 7 1 Transfer with Interruption 7 2 No Break Transfer 7 3 Soft Transfer 8 PARA...

Page 3: ...s current phase S optional Mains current phase T optional Mains frequency Mains KW phase R optional Mains KW phase S optional Mains KW phase T optional Mains KVA phase R optional Mains KVA phase S opt...

Page 4: ...nt transformers shall be 5 Amperes The input current rating of the current transformers may be selected as needed between 50 5 and 5000 5 amps Current transformer outputs shall be connected by separat...

Page 5: ...remove the plug connectors when inserting wires with a screwdriver 2 ALWAYS refer to the National Wiring Regulations when conducting installation 3 An appropriate and readily accessible set of disconn...

Page 6: ...set applications in order to provide extra security the normally closed contact of the mains contactor should be serially connected to this output In no break transfer or parallel with mains applicati...

Page 7: ...Analogue oil pressure sensor connection Do not connect the sensor to other devices 19 FUEL LEVEL SENSOR Input 0 5000 ohms Analogue fuel level sensor connection Do not connect the sensor to other devi...

Page 8: ...REHEAT Output 10A 28VDC 37 RELAY 3 ALARM RELAY Output 10A 28VDC These relays have programmable functions selectable from a list Term Function Technical data Description 38 CURR_R 39 CURR_R 40 CURR_S 4...

Page 9: ...NERATOR Yellow The LED will turn on when all 3 generator phase voltages are within the programmed limits LOAD GENERATOR Yellow It turns on when the generator contactor is activated LOAD MAINS Green It...

Page 10: ...the given situation If an alarm or warning occurs during operation other then programming mode the display will automatically switch to ALARM LIST position The MENU button will not allow to switch to...

Page 11: ...chronoscope Governor Output I AVR Output Voltage RU Phase Angle degrees Phase U Voltage Genset Frequency Phase R Voltage Mains Frequency 2 5 Soft transfer parameters Remaining Duration Governor Output...

Page 12: ...P_625 If any of the programmed values is zero this means that the parameter will not be used For example a maintenance period of 0 days indicates that the DKG 705 will request maintenance only based...

Page 13: ...ese conditions cause The alarm relay output to operate The WARNING led to turn on Most of the alarms are of LATCHING type Even if the alarm condition is removed the alarms will stay on and disable the...

Page 14: ...Analog In Set if the coolant temperature measured from analog input goes over the High Coolant Temperature Shutdown P_604 limit Low Oil Pressure Measured Analog In Set if the oil pressure measured fro...

Page 15: ...Input Spare Alarm 3 Digital Input Spare Alarm 2 Digital Input Spare Alarm 1 Digital Input These load dump alarms are set depending on the digital input settings The related program parameters are P_70...

Page 16: ...if the fuel level measured from analog input goes under the Low Fuel Level Warning P_609 limit High Oil Temperature Analog Input Set if the oil temperature measured from analog input goes over the Hig...

Page 17: ...No Mains Frequency R In parallel with mains operation and after the parallel check timeout delay P_A23 has elapsed this warning will be set if the mains frequency disappears for more than 2 5 periods...

Page 18: ...ration of the genset will be as in the OFF mode LOAD TEST It is used to test the genset under load Once this mode is selected the engine will run and the load will be transferred to the genset The gen...

Page 19: ...e REMOTE START signal is absent then mains voltages will be supposed to be present The front panel mimic diagram s mains LEDs will reflect the status of the REMOTE START input Any of the digital input...

Page 20: ...Enable This parameter enables disables the activation of the governor control output If governor control is disabled the output will always stay at the rest level defined by P_A13 P_A03 GOV Reverse Po...

Page 21: ...control is disabled the output will always stay at the rest level defined by P_A14 P_A05 AVR Reverse Polarity In normal polarity the AVR control impedance decreases in order to increase the alternato...

Page 22: ...ere will be a power interruption period duration during the transfer Note that the program parameters P_508 and P_509 define the power interruption period If this transfer method is used it is advised...

Page 23: ...The difference between mains and genset frequencies not more than programmed limit The voltage difference between phase R and phase U not more than programmed limit The phase angle between phase R and...

Page 24: ...No Break Transfer This parameter enables disables the No Break Transfer feature P_A06 Ignore Phase Order If set this parameter will disable the phase order check The phase order check should be disabl...

Page 25: ...g parallel with mains operation the mains contactor will immediately deenergize a general Parallel Mains Fail warning and a specific protection function warning will be generated At the end of the Sof...

Page 26: ...he genset after start The unit includes a comprehensive set of protection functions to detect quickly a mains failure during parallel with mains operation The protections are enabled after the timeout...

Page 27: ...and GOV controllers without extra hardware different power ratings acceptable for both gensets single genset load enabling slave genset run stop depending on user defined power levels and time delays...

Page 28: ...f frequency The ROCOF measures the frequency of the mains for each period If the frequency change exceeds the predefined limit for 4 successive periods the ROCOF detects a mains failure Thus the respo...

Page 29: ...power detector has a variable response time For a power not exceeding 2 times the predefined limit the response time is 8 cycles The response time is reduced with larger reverse powers It is approxim...

Page 30: ...my load function consists on the connection of a dummy load if the total genset load is below a limit and to disconnection of the dummy load when the total power exceeds another limit The dummy load f...

Page 31: ...ion of the genset is disabled by the weekly schedule then the AUTO led will flash instead of a steady on state Each turn on turn off time is defined in 15 minute steps These parameters are defined in...

Page 32: ...f exercise has come the unit will automatically switch to either TEST or LOAD TEST mode The engine will run and if the on load exercise is selected then the load will be transferred to the genset If a...

Page 33: ...nt The events are always displayed starting from the most recent one The Event Logging screens are included in menu group 3 Switching from one menu group to another is made by holding the MENU button...

Page 34: ...ts inside the unit Wipe the unit if necessary with a soft damp cloth Do not use chemical agents 17 SOFTWARE DOWNLOAD The DKG 705 application software is held in a flash memory and is field downloadabl...

Page 35: ...next program parameter in the current group if the current parameter is not modified This means that after modification the MENU key should be pressed twice to switch to the next parameter After the l...

Page 36: ...efine the function of 24 possible relays 9 Sensor calibration 2 Calibration points information for each of the 4 analog sensor inputs A Operation Mode 3 No Break transfer parallel with mains AVR and G...

Page 37: ...urns on for starting the genset 5 501 Wait before Start Sec 0 30 This is the time after the fuel solenoid is energized and before the genset is started This will be the preheat period if glow plugs ar...

Page 38: ...Gen High Limit Volt 100 300 If one of the generator phase voltages goes over this limit when feeding the load this will generate a Genset High Voltage Alarm and the engine will stop 5 516 Low Freq Sh...

Page 39: ...DATAKOM DKG 705 User s Manual 705_USER doc 39 5 522 Mains Freq Low Limit Hz 0 60 AUTO TEST 5 523 Mains Freq High Lim Hz 44 70 AUTO TEST 5 524 Genset Voltage Fail Timer Sec 0 30...

Page 40: ...g input falls below this limit while the engine is running this will generate a Low Oil Pressure Measured Warning 6 604 High Temperature Shutdown C 80 120 If the water temperature measured from the an...

Page 41: ...6000 If engine speed measured from the magnetic pickup input goes over this limit this will generate a High rpm Warning 6 617 Excess Power Load dump KW 0 2500 If the genset load goes over this limit...

Page 42: ...aintenance from being omitted If the period is set to 0 no SERVICE REQUEST will be indicated depending on engine hours however service may still be requested on a time limit basis see also parameter P...

Page 43: ...5000 If the genset active power output goes below this limit then the Load Shedding relay will be deactivated 6 632 Load Shedding High Limit KW 0 5000 If the genset active power output goes above thi...

Page 44: ...n t care and the exercise will be performed every day regardless of the day selection If the monthly exercise is selected with parameter P_638 2 then the exercise will be performed during the first 7...

Page 45: ...dump alarm 2 Warning 3 No alarm given from this input 7 7x2 Digital input x delay 0 1 0 Delay 1 second 1 Delay 4 seconds This is the alarm detection speed of the input If the parameter is set to 1 the...

Page 46: ...Spare Alarm 6 11 Spare Alarm 5 12 Spare Alarm 4 13 Spare Alarm 3 14 Spare Alarm 2 15 Spare Alarm 1 16 Mains Contactor Switch This signal is used for No Break transfer operation 17 Genset Contactor Swi...

Page 47: ...y output The common terminal of the internal relay is connected to the generator phase U 8 805 Relay 5 function 10 Mains contactor relay output The common terminal of the internal relay is connected t...

Page 48: ...put_4 053 Load Dump Digital Input_5 054 Load Dump Digital Input_6 055 Load Dump Digital Input_7 No FUNCTION 056 Load Dump not used 057 Load Dump not used 058 Load Dump not used 059 Load Dump not used...

Page 49: ...stics are defined using a maximum of 8 known points Each point consists of a pair of value the first being the resistor value and the second being the corresponding analog measurement For each sensor...

Page 50: ...ore Phase Order 0 1 0 Phase order check enabled This option is used in 3 phase gensets 1 Phase order check disabled This option is used in single phase gensets 10 A07 Synchronization Fail Timeout Sec...

Page 51: ...t and mains phases during synchronization The standard value for this parameter is 64 But it must be readjusted for the genset during manufacturing If this parameter is too high a voltage oscillation...

Page 52: ...tion while operating in parallel with mains When the parallel protections are enabled if the phase of the mains measured on last 2 cycles jumps over this limit on the phase measured on last 4 th and 5...

Page 53: ...e Genset Power Rating defined in parameter P_A17 10 A37 Dual Genset Delayed Stop Power 0 100 If the total active load is below this level for the period defined in P_A38 the slave genset will stop Thi...

Page 54: ...on 11 B01 Phase S Calibration 11 B02 Phase T Calibration 11 B03 Phase U Calibration 11 B04 Phase V Calibration 11 B05 Phase W Calibration 11 B06 Current R Calibration 11 B07 Current S Calibration 11 B...

Page 55: ...the load is transferred to the mains AC voltages displayed on the unit are not correct Check engine body grounding The error margin of the unit is 3 volts If there are faulty measurements only when t...

Page 56: ...Y and charging alternator D terminal The normally closed contact of the relay will be connected serially to the unit s START output So the starting will also be removed when the D pulls to battery pos...

Page 57: ...be 20 seconds Check the synchronization limits P_A10 P_A11 P_A12 If necessary widen the limits A typical application may be P_A10 0 5Hz P_A11 5V P_A12 5 20 DECLARATION OF CONFORMITY The unit conforms...

Page 58: ...pouts survives 0V for 100ms Current consumption 500 mA DC max Relay outputs open Total DC Current Output Rating 10A DC Max Current for each Terminal 10A RMS Magnetic pickup voltage 0 5 to 70Vpk Magnet...

Page 59: ...DATAKOM DKG 705 User s Manual 705_USER doc 59 22 CONNECTION DIAGRAM...

Page 60: ...DATAKOM DKG 705 User s Manual 705_USER doc 60 DATAKOM Electronics Limited Tel 90 216 466 84 60 Fax 90 216 364 65 65 e mail datakom datakom com tr http www datakom com tr...

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