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WEG ECW500 Скачать руководство пользователя страница 50

Functional Description

.

42 | ECW500

𝐼

𝐸𝑋𝐶

= 𝐼

𝐸𝑋𝐶_𝐸𝑂𝑆

×

𝑉

10𝑉_𝑚𝑒𝑑𝑖𝑑𝑎

10

𝐼

𝐸𝑋𝐶

= 𝐼

𝐸𝑋𝐶_𝐸𝑂𝑆

×

(𝐼

4−20𝑚𝐴_𝑚𝑒𝑑𝑖𝑑𝑎

− 4)

16

In which:

𝑉

10𝑉_𝑚𝑒𝑎𝑠𝑢𝑟𝑒

is the measured voltage at the analog input (40028)

𝐼

4−20𝑚𝐴_𝑚𝑒𝑎𝑠𝑢𝑟𝑒

is the current measured at the analog input (40026).

𝐼

𝐸𝑋𝐶_𝐸𝑂𝑆

is the full scale adjusted (30256).

NOTE!

With the paramater 31028 enabled the ECW500 will not generate any DC voltage at the output
(terminals 49 and 50, F+ / F-) while in operation (status On .

6.5.4

MTVC_DROOP

(Mode: Terminal  Voltage  Control with DROOP)  In this  mode, the ECW500 operates in the load compensation
mode,  based  on  reactive  power  that  the  synchronous  machine  is  generating  or  absorbing.  To  do  this,  an
impedance is simulated at the machine terminals and the voltage is regulated  in point inside or outside of the
synchronous machine. In this mode, the operation is always in parallel with the network (online) or in parallel with
a generator set.

Two compensation modes are available: droop and line-drop compensation.

In  the  droop  mode,  the  reference  voltage  is  reduced  considering  the  increase  of  the  reactive  power  at  the
output of the synchronous machine.
On the other hand, in the line-drop compensation mode, the ECW500 regulates the voltage in a point outside
the machine, in the step-up transformer  or  even in  a point along the transmission  system. The compensation
produces an increasing reference voltage for the increase of the reactive power at the output of the machine.

For  operation  on  MTVC  DROOP  mode,  the  user  must  adjust  the  compensation  constant  of  this  mode
(parameter 30216), which is a percentage value of the nominal power of the machine.
When the compensation constant is positive, the droop compensation is performed.
When it is negative, the line drop compensation is active.

The equation below shows the  value of  voltage Droop  that will be subtracted from (or added) of (to the) main
reference.

𝑉

𝐷𝑅𝑂𝑂𝑃

= %

𝐷𝑅𝑂𝑂𝑃

×

𝑉

𝑟𝑎𝑡𝑒𝑑

√3 × 𝐼

𝑟𝑎𝑡𝑒𝑑

×

𝑄

𝑚𝑒𝑎𝑠𝑢𝑟𝑒𝑑

𝑉

𝑚𝑒𝑎𝑠𝑢𝑟𝑒𝑑

In which:

DROOP

%

is the compensation constant of the droop/line-drop modes (30216);

rated

V

is the rated voltage of the synchronous machines (30058);

rated

I

is the rated current of the synchronous machine (30060);

measured

Q

is the measured single-phase reactive power (40016);

measured

V

is the average effective voltage measured of the three phases (40006).

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Содержание ECW500

Страница 1: ...Motors I Automation I Energy I Transmission Distribution I Coatings Automatic Voltage Regulator ECW500 Manual ...

Страница 2: ......

Страница 3: ...Manual Series ECW500 Language English Document No 10003224697 03 Software Version 1 3X Publication Date 08 2018 ...

Страница 4: ...ted in the version V1 20 to the Quick Reference guide Inclusion of a configuration and operation description for the Autotuning function 1 and 6 04 Inclusion of new parameters created on version V1 3X Description of analog output operation New network interfaces Ethernet and Anybus New protection against broken wire for the analog input PLCI PxQ curve with new maximum and minimum limits 1 2 4 6 an...

Страница 5: ...5 2 2 Positioning and Mounting 22 5 3 ELECTRICAL INSTALLATION 24 5 3 1 Power and Grounding Wiring 25 5 3 2 Protection Fuses 26 5 3 3 Grounding Connection 27 5 3 4 Control Connections 28 6 FUNCTIONAL DESCRIPTION 31 6 1 PARAMETER STRUCTURE IN HMI 31 6 1 1 Measurement Screens 33 6 1 2 Edition Screens 34 6 1 3 Event Screen 34 6 1 4 Password Screen 35 6 2 DIGITAL INPUTS 36 6 2 1 ON Digital Input 37 6 2...

Страница 6: ... Excitation Overcurrent Protection PEOC 53 6 8 3 DC Link Overvoltage Protection 53 6 8 4 Fault Protection on Triggers of the Power Switches 53 6 9 DIGITAL RELAY OUTPUT 53 6 9 1 Status Relay 53 6 9 2 General Fault Relay 53 6 9 3 Configurable Relays 0 1 2 and 3 53 6 10 SOFT START 54 6 11 AUTOMATIC TUNING AUTOTUNING 54 6 11 1 Configuration Parameters 54 6 11 2 Commands 56 6 11 3 Messages 57 6 11 4 Mo...

Страница 7: ...67 10 5 2 Test of the Excitation Current Limiter 68 10 6 TESTS ON THE ONLINE MODES 69 11 MAINTENANCE 71 11 1 DIAGNOSIS OF FAULTS ERRORS AND MESSAGES 71 11 2 TECHNICAL ASSISTANCE 71 11 3 PREVENTIVE MAINTENANCE 71 11 4 INSTRUCTIONS TO CLEAN THE PRODUCT 72 11 5 SOLVING THE MOST COMMOM PROBLEMS 72 12 TECHNICAL SPECIFICATIONS 74 12 1 POWER DATA 74 12 2 ELETRONICS GENERAL DATA 75 ...

Страница 8: ......

Страница 9: ...O 10003 LEOC Status 0 Off 1 On 0 RO 10004 LEUC Status 0 Off 1 On 0 RO 10005 LTOC Status 0 Off 1 On 0 RO 10006 DI Start status 0 Off 1 On 0 RO 10007 DI Stop status 0 Off 1 On 0 RO 10008 DI Increment status 0 Off 1 On 0 RO 10009 DI Decrement status 0 Off 1 On 0 RO 10010 DI MTVC status 0 Off 1 On 0 RO 10011 DI MECC status 0 Off 1 On 0 RO 10012 DI Enable Online status 0 Off 1 On 0 RO 10013 DI Disable ...

Страница 10: ...ng Address 6 30002 a 49998 39998 31164 Anybus Mapped Reading Address 7 30002 a 49998 39998 31166 Anybus Mapped Reading Address 8 30002 a 49998 39998 31168 Anybus Mapped Reading Address 9 30002 a 49998 39998 31170 Anybus Mapped Reading Address 10 30002 a 49998 39998 31172 Anybus Mapped Reading Address 11 30002 a 49998 39998 31174 Anybus Mapped Writing Address 0 30000 a 39998 30000 31176 Anybus Mapp...

Страница 11: ... RO 31238 Ethernet Modbus IP Field 3 0 a 255 0 RO 31240 Ethernet Modbus IP Field 4 0 a 255 0 RO 31242 Ethernet Modbus Mask Field 1 0 a 255 0 RO 31244 Ethernet Modbus Mask Field 2 0 a 255 0 RO 31246 Ethernet Modbus Mask Field 3 0 a 255 0 RO 31248 Ethernet Modbus Mask Field 4 0 a 255 0 RO 31250 Ethernet Modbus Gateway Field 1 0 a 255 0 RO 31252 Ethernet Modbus Gateway Field 2 0 a 255 0 RO 31254 Ethe...

Страница 12: ...2 x Pnom a 1 2 x Pnom 0 Var 30244 Setpoint MPFC Preposition 0 01 a 0 01 1 00 30246 Enable MECC reference tracking 0 False 1 True 0 31016 Enable DI for Inc Dec of reference 0 Disabled 1 Enabled 1 31036 Enable MTVC reference tracking 0 False 1 True 0 31038 Enable MRPC reference tracking 0 False 1 True 0 31040 Enable MPFC reference tracking 0 False 1 True 0 31042 Enable Follower on MTVC 0 False 1 Tru...

Страница 13: ...t 5 2000 MVar to 0 0 30170 Maximum reactive LEUC adjust 2000 MVar to 0 0 30172 Minimum reactive LEUC adjust 2000 MVar to 0 4 5 MVar 30174 Maximum active LEUC adjust 0 to 2000 MW 4 5 MW 30176 Minimum active LEUC adjust 0 to 2000 MW 0 30052 LEUC Proportional gain Kp 0 0 to 99 999 0 100 30054 LEUC Integral gain Ki 0 0 to 99 999 0 200 Underfrequency LUF 30118 U F Corner frequency 15 to 150 0 Hz 57 0 H...

Страница 14: ...able online DI type 0 Button Released 1 1 Button Pressed 2 Button Hold 30192 Disable online DI type 0 Button Released 1 1 Button Pressed 2 Button Hold 30194 Enable parallel DI type 0 Button Released 1 1 Button Pressed 2 Button Hold 30196 Disable parallel DI type 0 Button Released 1 1 Button Pressed 2 Button Hold 30198 Alarm reset DI type 0 Button Released 1 1 Button Pressed 2 Button Hold 30200 Pre...

Страница 15: ...rue 0 30346 RL2 machine undervoltage 0 False 1 True 0 30348 RL3 machine undervoltage 0 False 1 True 0 30350 RL0 underfrequency 0 False 1 True 0 30352 RL1 underfrequency 0 False 1 True 0 30354 RL2 underfrequency 0 False 1 True 0 30356 RL3 underfrequency 0 False 1 True 0 30358 RL0 overexcitation 0 False 1 True 0 30360 RL1 overexcitation 0 False 1 True 0 30362 RL2 overexcitation 0 False 1 True 0 3036...

Страница 16: ...342 RL1 Loss of Excitement 0 False 1 True 0 31344 RL2 Loss of Excitement 0 False 1 True 0 31346 RL3 Loss of Excitement 0 False 1 True 0 PROTECTIONS Feedback Loss PFL 30286 Enable PFL 0 Disabled 1 Enabled 1 30288 Enable PFL to MECC 0 Disabled 1 Enabled 1 30290 PFL delay 0 0 to 30 0 s 0 2 s 30292 PFL balanced level 0 0 to 100 0 15 0 30294 PFL unbalanced level 0 0 to 100 0 15 0 Excitation Loss PEL 30...

Страница 17: ...to 999 2 30082 Time to show message on HMI 0 to 9000 ms 500 ms 30084 Time to hide message on HMI 0 to 9000 ms 8000 ms 30086 Fast key multiplier 0 to 300 2 30088 Super fast key multiplier 0 to 3000 10 30090 Ultra fast key multiplier 0 to 3000 20 30092 LCD Contrast 0 to 31 31 30094 Calendar Month 1 to 12 1 30096 Calendar Day 1 to 31 1 30098 Calendar Year 2000 to 2200 2010 30100 Calendar Week day 0 S...

Страница 18: ...RO 40010 Frequency 0 to 200 Hz RO 40012 Power factor 1 000 to 1 000 RO 40014 Active power per phase 0 to 2100 MW RO 40016 Reactive power per phase 2100 MVar to 2100 MVar RO 40018 Apparent power per phase 0 to 2100 MVA RO 40020 Three phase active power 0 to 2100 MW RO 40022 Three phase reactive power 2100 MVar to 2100 MVar RO 40024 Three phase apparent power 0 to 2100 MVA RO 40026 4 to 20 mA Analog...

Страница 19: ...500 fn RO 40092 Excitation current Iexc ripple 0 to 500 RO 40112 Firmware version 0 00 to 99 99 RO 40114 Analog Output Value 0 00 to 100 00 RO 40116 MAC address byte 0 MSB 0 to 255 RO 40118 MAC address byte 1 0 to 255 RO 40120 MAC address byte 2 0 to 255 RO 40122 MAC address byte 3 0 to 255 RO 40124 MAC address byte 4 0 to 255 RO 40126 MAC address byte 5 0 to 255 RO 40128 Status relay condition 0 ...

Страница 20: ...its code is registered on the events list the fault relay actuates connectors 33 and 34 In order to enable the ECW500 again and operate it normally it is necessary to reset it which can be done the following ways switching off the electronic power supply connectors 37 38 or 39 40 and switching it back on power on reset pressing the key on the HMI sending the command reset by the Modbus communicati...

Страница 21: ...3 EVENTS Events on the other hand are normal occurrences and not harmful to the system operation as a mode transition a received command and others Events are not indicated on the HMI and only recorded in the event list Table 2 3 Event list EV000 Excitation OFF EV001 Excitation ON EV002 Calibration of the analog input of 10 Vdc executed EV003 Command of alarm reset received EV004 Changed to MECC m...

Страница 22: ...mended in this warning have the purpose of protecting the user against death serious injuries and considerable material damage ATTENTION The procedures recommended in this warning have the purpose of avoiding material damage NOTE The information mentioned in this warning is important for the proper understanding and correct operation of the product 3 2 SAFETY WARNINGS IN THE PRODUCT The following ...

Страница 23: ...shed standards 3 Give first aid services DANGER Always disconnect the main power supply before touching any electrical device associated with the ECW500 Several components may remain charged with high voltage even after the AC DC power input is disconnected or turned off Wait at least 20 minutes to guarantee the fully discharge of capacitors Always connect the equipment frame to the grounding inst...

Страница 24: ...al This manual can also be downloaded at WEG website www weg net 4 1 1 Symbols Used This section presents the definition of the symbols used in this manual to identify features of the ECW500 Digital Input ON Digital Input OFF Digital Input Enable Parallel Operation Digital Input Disable Parallel Operation Digital Input Enable Online Operation Digital Input Disable Online Operation INC Digital Inpu...

Страница 25: ...ece of metal designed to dissipate heat generated by power semiconductors Amp A Amps C degrees Celsius AC alternate current DC direct current Hz hertz min minute rms root mean square effective value rpm revolutions per minute unit of speed s second V volts ohms IT inverse time term used to indicate the actuation time of the current limiters based on the inverse time characteristic Ixt the higher t...

Страница 26: ...or MTVC and MECC modes Limiter LUF to compensate underfrequency operating on modes MTVC and MTVC_DROOP Other 3 limiters operating in all control modes except in the MECC mode LEOC Excitation Over Current Limiter LEUC Excitation Under Current Limiter LTOC Terminal Over Current Limiter PID stability sets for MTVC mode and PI for the other modes Protections that can turn the unit off or switch to MEC...

Страница 27: ...implified block diagram of the ECW500 4 4 LABEL INFORMATION The identification label of the product located on the side of the regulator contains important information about its model such as voltage and current ranges allowed for operation ...

Страница 28: ...ttons and the left and right menu buttons The e navigation buttons are used for both navigating through the menus and increasing and decreasing the values of variables The functions of the left and right menu vary according to the indication made on the LCD The buttons Turn on and Turn off can be configured to not operate if is desired that operation be performed only by external controls The alar...

Страница 29: ...eters 4 5 3 Battery In order to keep the operation of the internal clock while the regulator is powered down the keypad HMI of the ECW500 has a battery If the battery is low or if it is not installed on the HMI the clock time will be invalid In this case replace the battery for a new one of the same model CR2032 according to the procedure presented in Figure 4 4 Figure 4 4 HMI battery replacement ...

Страница 30: ...ing for each Celsius degree above 50 ºC Air relative humidity 10 to 90 non condensing Altitude 0 to 1000 m rated conditions 1000 m to 4000 m 1 current derating for each 100 m above 1000 m Pollution degree 2 according to EN50178 and UL508C with non conductive pollution Condensation must not originate conduction through accumulated residues 5 2 2 Positioning and Mounting The ECW500 should be mounted...

Страница 31: ...Installation and Connection ECW500 23 Figure 5 1 Front and back view with dimensions Figure 5 2 Left and right side views of ECW500 ...

Страница 32: ...gulator and it must be opened before beginning any connections DANGER The ECW500 must not be used as an emergency stop device ATTENTION The following information is merely a guide for proper installation Comply with applicable local regulations for electrical installations ATTENTION For technical information of the ECW500 refer to chapter 12 ...

Страница 33: ... regulator is essential to prevent damages to the installation and equipment Thus the following Table 5 1 presents the minimum recommended values for cables to connect the power circuit and also for the protection conductor PE based on NBR 5410 standard ATTENTION When flexible cables are used for the power and grounding connections proper terminals must be used ...

Страница 34: ...of the cables in a single layer For installation in other conditions refer to NBR 5410 NOTE The output wiring of the regulator F F must be installed separately from the input power wiring P A P B P C as well as from the control and signal wiring 5 3 2 Protection Fuses In order to protect the product against short circuit ultra fast fuses must be used at the regulator input dimensioned according to...

Страница 35: ...the regulator must be solidly grounded however it must not be used to ground the product DANGER Do not share the grounding wiring with other equipment that operate at high currents e g high power motors welding machines etc When several regulators are used follow the procedure shown in Figure 5 5 for the grounding connection NOTE The frame of the synchronous machine driven by the ECW500 must alway...

Страница 36: ...W500 5 3 4 Control Connections The control connections of the ECW500 analog inputs output digital inputs outputs are made at terminals 1 to 36 and 52 to 75 located at the side of the product The typical control functions and connections are shown in Figure 5 6 Grounding bar inside the panel ...

Страница 37: ...Vac 23 E2 B Input for measurement of phase voltage B 24 E1 A Input for measurement of phase voltage A 25 RL03 Digital output 3 RL03 Programable 6 relay outputs Rated voltage of contacts 250Vac Maximum voltage for commutation 400Vac Rated current 8 A Maximum capacity for commutation 35 Vdc 8 A 48 Vdc 1 2 A 125 Vdc 0 3 A 26 27 RL02 Digital output 2 RL02 Programable 28 29 RL01 Digital output 1 RL01 P...

Страница 38: ... The shield connection of the cables must also observe the form presented in Figure 5 7 Table 5 3 Separation distances between control wiring and other wiring Wiring Length Minimum Separation Distance 30 m 10 cm 30 m 25 cm Figure 5 7 Correct form of connection of the control cable shield NOTE Relays contactors solenoids or coils of electromechanical brakes installed close to the converter may occa...

Страница 39: ... initialization shows the main variables of the synchronous machine in addition to the regulator status and the current operating mode Figure 6 1 Initial screen displayed by the HMI of the ECW500 From this screen after pressing the right menu key the first level of the group structure is shown on the display and it is possible navigate through other groups using the keys Full navigation tree to al...

Страница 40: ...ent Soft Start Config Protections PFL Feedback Loss PEOV Field Overvoltage PEOC Field Overcurrent PED Excitation Diodes PEL Excitation Loss Power Module PTOV Term Overvoltage PTUV Term Undervoltage System Rated Param Machine Parameters Current Transformer Voltage Transformer ECW Configuration Digital Inputs Transition Type 1 6 Transition Type 7 13 Other Configuration Digital Outputs Relays Status ...

Страница 41: ... 6 1 1 Measurement Screens The measurement screens have the profile shown below In each line there is a variable with its description a number with 4 digits and a comma and then the measurement unit On the measurement screen the only available button is the return to the previous screen Back ...

Страница 42: ...sult in 999 001 that would not be shown on the screen since it has six digits In this case the real increment will be 0 1 which is the least significant digit resulting in 999 1 For values with visible increment i e close to the minimum the ECW uses the increment value of the parameter shown in the parameter table Example With increment of 0 1 and a value shown of 1 000 the decrement must result i...

Страница 43: ...reens to enter the password In order to change the password the user must edit the new password parameter in the second line with access granted The sequence of screens below shows the password changed to value 5 After punching in the new password in line 2 the HMI automatically goes to line three prompting the confirmation of the entered value If confirmed the new password is already effective an...

Страница 44: ...d from OFF to ON when a voltage is applied to the digital input terminal and then removed i e in the falling edge of the pulse Just applying the voltage to the digital input without removing it has no effect Once activated this digital input has no longer effect until the function is switched by its complementary input Figure 6 10 Transition necessary at the digital inputs on the Released Button M...

Страница 45: ...mode of the ECW500 to MTVC DROOP Mode Terminal Voltage Control with DROOP It can be used in a complementary way to the DISABLE PARALLEL digital input in Maintained Button mode It only runs if the ECW500 is enabled If the ECW500 is disabled and this input is activated a fault warning is generated 6 2 6 DISABLE PARALLEL Digital Input The DISABLE PARALLEL digital input is complementary to the ENABLE ...

Страница 46: ...ECW500 is operating in the MTVC mode each increment in the voltage reference will be 0 1 V times the multiplier Each time the ECW500 is disabled or an exchange of operating mode occurs the internal variable that controls how much increment is added to the reference of the mode is reset to zero The increment value can be set before enabling the ECW500 For the INCREMENT digital input the action of t...

Страница 47: ... via parameters 31054 and 31056 which define the function of each analog input When the current input is selected the ECW500 internally calculates a voltage equivalent in the scale from 10 to 10 V The calculation is made based on the following equation3 𝑉 𝑒𝑞 1 25 𝐼4 20𝑚𝐴𝑚𝑒𝑎𝑠𝑢𝑟𝑒𝑑 12 In the MTVC or MTVC DROOP mode the reference value that may be obtained through the analog input is related to the ra...

Страница 48: ... according to the following equations 𝑃𝐹𝑅𝑒𝑓_𝑀𝑃𝐹𝐶 1 00 𝐺𝑎𝑖𝑛𝐴𝐼_𝑀𝑃𝐹𝐶 𝑉𝐴𝐼_𝑚𝑒𝑎𝑠𝑢𝑟𝑒𝑑 10 𝑡𝑜 𝐺𝑎𝑖𝑛𝐴𝐼_𝑀𝑃𝐹𝐶 𝑉𝐴𝐼_𝑚𝑒𝑎𝑠𝑢𝑟𝑒𝑑 0 𝑃𝐹𝑅𝑒𝑓_𝑀𝑃𝐹𝐶 1 00 𝐺𝑎𝑖𝑛𝐴𝐼_𝑀𝑃𝐹𝐶 𝑉𝐴𝐼_𝑚𝑒𝑎𝑠𝑢𝑟𝑒𝑑 10 𝑡𝑜 𝐺𝑎𝑖𝑛𝐴𝐼_𝑀𝑃𝐹𝐶 𝑉𝐴𝐼_𝑚𝑒𝑎𝑠𝑢𝑟𝑒𝑑 0 In which MPFC AI Gain _ is the gain parameter for the analog input in the MPFC mode parameter 30254 measured AI V _ is the measured voltage at the analog input parameter 40028 In the MECC mode it is possible to use...

Страница 49: ...ffline acting in an isolated way It is possible to go from the MTVC mode to all other operating modes 6 5 3 MECC Manual Mode Excitation current Control In the MECC mode the ECW500 controls the excitation current of the synchronous machines regardless the terminal voltage of the machine In this mode the machine operates out of the network offline acting an isolated way The MECC mode has a function ...

Страница 50: ...g the increase of the reactive power at the output of the synchronous machine On the other hand in the line drop compensation mode the ECW500 regulates the voltage in a point outside the machine in the step up transformer or even in a point along the transmission system The compensation produces an increasing reference voltage for the increase of the reactive power at the output of the machine For...

Страница 51: ...ge absorbing reactive power from the system Figure 6 13 Operation with positive and negative references in MPFC mode 6 5 6 MRPC Var Control Mode Terminal Reactive Power Control In this mode the ECW500 controls the excitation so as to guarantee that the reactive power at the terminals of the synchronous machine follow the reference of the control In this mode the synchronous machine operates connec...

Страница 52: ...ee the figure below and the Table 6 3 to understand the necessary conditions to switch from each operation modes Figure 6 14 Operation modes of ECW500 1 2 3 4 5 6 7 8 9 10 11 OFF MTVC MECC MRPC MPFC MTVC_DROOP ONLINE MODES OFFLINE MODES ...

Страница 53: ...LE ONLINE simultaneously Offline operating mode must be in MECC 8 MTVC MPFC Digital Input ENABLE PARALLEL Digital Input ENABLE ONLINE simultaneously Online operating mode must be in MPFC MPFC MTVC Digital Input DISABLE PARALLEL Digital Input DISABLE ONLINE simultaneously Offline operating mode must be in MTVC 9 MRPC MTVC DROOP Digital Input DISABLE ONLINE MTVC DROOP MRPC Digital Input ENABLE ONLIN...

Страница 54: ...e ECW500 30062 fknee point is the frequency configured on the ECW500 from which the limiter starts to actuate 30118 fmeasured is the frequency measured by the ECW500 40010 KUF_ knee point is the slope constant of the curve of the U F 30120 Figure 6 15 U F curve of the underfrequency limiter The V Hz Underfrequency type limiter has the purpose of maintaining constant the ratio between the voltage a...

Страница 55: ...vel But if the excitation current is above the low level and below the high level the LEOC will lead the excitation current to the value defined by parameter 30140 after reaching the integral limit Ixt that is defined by the following equation 𝐼𝑛𝑡𝑟𝑒𝑔𝑎𝑙 𝐿𝑖𝑚𝑖𝑡 𝐿𝐸𝑂𝐶 𝐻𝑖𝑔ℎ 𝐿𝑒𝑣𝑒𝑙𝐿𝐸𝑂𝐶 𝐿𝑜𝑤 𝐿𝑒𝑣𝑒𝑙𝐿𝐸𝑂𝐶 𝑇𝑖𝑚𝑒 𝐴𝑐𝑡𝑢𝑎𝑡𝑖𝑜𝑛𝐿𝐸𝑂𝐶 In which 𝑇𝑖𝑚𝑒 𝐴𝑐𝑡𝑢𝑎𝑡𝑖𝑜𝑛𝐿𝐸𝑂𝐶 parameter 30134 Once the condition of application allows mac...

Страница 56: ...n Once enabled the LEUC limiter will operate at the excitation current keeping the machine in the PxQ curve points The LEUC limiter uses a PI loop independent from the main loop with specific Kp and Ki gains Figure 6 18 Points for configuration of the PxQ curve The active and reactive power points must be set within the limits given by the parameters 30176 Pmin 30172 Qmin 30174 Pmax and 30170 Qmax...

Страница 57: ... 9 3𝑀𝑊 1 5𝑀𝑉𝐴𝑟 NOTE The excitation undercurrent limiter operates in all operation modes except in the MECC mode LEUC can be disabled using the 30148 parameter and a relay can be configured to indicate its operation 6 6 4 Terminal Overcurrent Limiter LTOC The aim of the terminal overcurrent limiter stator overcurrent limiter is to prevent an excessive and destructive current through the terminals o...

Страница 58: ...ll turn off and returns to the previously active mode control Figure 6 20 Behavior of integral actuation for the terminal overcurrent limiter LTOC NOTE As a first adjust for this protection set the low level with the same value of the machine rated current 30060 and the high level to 10 above the low level The LTOC time can be maintained at default value 15s NOTE The terminal overcurrent limiter o...

Страница 59: ...d by a time set Three parameters are available to set this protection enable disable 30422 the overvoltage level 30424 and time for the protection to actuate 30426 6 7 3 Fault Protection in the Rotating Diodes PED The ECW500 monitors the operation of the rotating diodes of the exciter without brushes through the analysis of the excitation current and protects against short circuit and open circuit...

Страница 60: ...iguration 6 7 7 Power Module Overtemperature Protection This function aims at protecting the power module of the ECW500 through the monitoring of the temperature on the semiconductors If the temperature exceeds the level set for a configured time for protection a fault is generated It is also possible to configure for the ECW500 to shut down the excitation if this fault occurs Three parameters are...

Страница 61: ...individually If any of them fails the ECW500 is automatically shut down and an error is generated indicating which switch trigger failed This fault is also generated in case of a short circuit at the power output terminals 6 9 DIGITAL RELAY OUTPUT The ECW500 has six relay outputs to indicate information about the equipment operation Two relays have specific functions and four of them are configura...

Страница 62: ...ure 6 21 shows the behavior of the starting ramp Figure 6 21 Typical curve of actuation of the soft start function 6 11 AUTOMATIC TUNING AUTOTUNING The ECW500 s automatic tuning function allows finding an appropriate adjustment for the gains in each operation mode To perform the Autotuning function it is necessary the ECW500 be controlling the excitation of the synchronous machine in the operation...

Страница 63: ... low value of hysteresis can let the autotuning routine very sensitive and maybe it will not be possible to achieve the convergence So the rule for this parameter is to start with the standard value 0 5 In case that the autotuning finishes without to find the gains of controller it must be increased the value slowly 31074 Convergence Tolerance Converg This parameter defines the maximum level of of...

Страница 64: ...ct the gains of other mode different from the current mode NOTE If the values of parameters 31078 31080 and 31082 are null 0 0 the function CopyGains have effect in the gains of current operation mode 31100 Higher Limit of feedback during the Autotuning Max Fdbck 31112 Lower Limit of feedback during the Autotuning Min Fdbck These parameters define the higher and lower limits that the feedback sign...

Страница 65: ...d with success EV020 Autotun Abort Autotuning canceled by the user key F1 or Turn Off excitation EV021 ATune Timeout Autotuning finished for exceeding the time defined in 31076 6 11 4 Monitoring To verify if the automatic tuning is working correctly it is recommended to monitor the variation of the duty cycle and the feedback variable during the execution of the function with a trend graphic at th...

Страница 66: ...nalog Inputs For the analog input voltage 10V to 10V it is also available in the ECW500 the self calibration function It allows correcting inaccuracies inherent in the product manufacturing and in the tolerance of components providing greater precision for measurement The self calibration must always be performed with the ECW500 out of operation disconnected from the synchronous machine and the an...

Страница 67: ...ction Requested Data CRC 1 byte 1 byte N bytes 2 bytes 7 2 MODBUS FUNCTIONS AVAILABLE ON THE ECW500 The MODBUS functions available on the ECW500 are listed below Detailed information to use these functions is found in the MODBUS protocol specification F0x01 Read Coils F0x02 Read Discrete Inputs F0x03 Read Holding Registers F0x04 Read Input Registers F0x05 Write Single Coils F0x0F Write Multiple Co...

Страница 68: ...n this minimum period the telegram will be considered invalid because the ECW500 will discard the bytes already received and build a new telegram with the bytes that are being transmitted For a baud rates above 19200 bits s the times used are the same ones considered for this rate Table 7 1 shows the times for different baud rates Table 7 1 Baud rates and times involved in telegram transmission Ba...

Страница 69: ...Modbus RTU Communication ECW500 61 Figure 7 1 Converter USB RS485 ...

Страница 70: ...in Modbus TCP protocol For a correct communication and operation parameters 30258 to 30280 must be configured according to the network as well as parameters 31218 port 31220 Id and 31222 timeout Parameter 31232 defines whether Dynamic Configuration Protocol DHCP is enabled or not For more information about the Ethernet network refer to the specific Ethernet manual ...

Страница 71: ...ow for a detailed description of these parameters 31214 Status word It allows monitoring the equipment status Each bit represents one state Bits Values Bit 0 Regulator Status 0 Regulator OFF 1 Regulator ON Bit 1 Ramp State 0 Startup ramp disabled 1 Startup ramp acting Bit 2 LUF 0 LUF disable 1 LUF acting Bit 3 LEOC 0 LEOC disable 1 LEOC acting Bit 4 LEUC 0 LEUC disable 1 LEUC acting Bit 5 LTOC 0 L...

Страница 72: ...ll materials left from the inside of the application panel 3 Check if the synchronous machine current and voltage match the regulator 4 Measure the line voltage and check that it is within the permitted range for the ECW500 5 Energize the electronics L N or BAT BAT and confirm the success of the power up the display must show the standard monitoring screen Figure 6 1 10 3 SYSTEM DATA Fill out the ...

Страница 73: ... __________________ Terminal overcurrent limiter LTOC ON OFF ____________ 10 4 3 Input and Output Configuration In this step all the digital inputs relay outputs and the analog input of the equipment are configured The For further details on the operation of the digital inputs and their possible configuration refer to item 6 2 Pressed Released Maintain Turn on excitation Turn off excitation Increm...

Страница 74: ...___ Minimum setting of the excitation current reference MECC mode ________________ Internal follower of the MECC mode ____________ Maximum setting of the reactive power reference MRPC mode ____________ Minimum setting of the reactive power reference MRPC mode ____________ Maximum setting of the delayed power factor reference MPFC mode ____________ Maximum setting of the advanced power factor refer...

Страница 75: ...__ Protection of excitation loss PEL time for warning ______________ Protection of the PWM maximum power module ______________ Protection of the PWM minimum power module ______________ Protection of the power module by phase loss enable disable _____________ Protection of the power module maximum temperature of the module ______________ Protection of the power module time for warning of maximum te...

Страница 76: ... of the PI controller of the MTVC mode _______________________________________ 9 Turn off the regulator using the digital inputs or the HMI Result ____________________________________________________________________________ 10 Turn on the excitation in the MTVC mode checking if the start ramp occurs according to the configuration When it reaches the reference voltage test the increment and decreme...

Страница 77: ..._________________________________________________________________ 3 Configure the reactive control mode desired and transfer to this mode by executing the command by the digital inputs serial communication port or HMI Be prepared to return to the MECC mode if an over excitation of the machine occurs Reactive control modes ____________________ Result ________________________________________________...

Страница 78: ...eactive mode chosen for a negative value so that the synchronous machine starts to absorb reactive Continue to vary the reference until the limiter becomes active Point 1 Active power __________________ Reactive power __________________ Point 2 Active power __________________ Reactive power __________________ Point 3 Active power __________________ Reactive power __________________ Point 4 Active ...

Страница 79: ...s for the full discharge of the power capacitors Always connect the equipment frame to the protective earth PE in the appropriate place ATTENTION Electronic boards have components sensitive to electrostatic discharges Do not touch directly any of the components or connectors If necessary first touch the metallic frame or use a suitable grounding strap When installed in environments with appropriat...

Страница 80: ...DC Refer to the specification table in chapter 12 Technical Specifications HMI frozen or with the message Communication Lost Turn off the power supply of the ECW500 for about 30 seconds and turning it back on If the problem occurs during the update of the software of the product repeat the procedure and reset the parameters to return to factory default settings Voltage generator does not increase ...

Страница 81: ...and the equipment itself If any of these conditions is indicated make sure that the problem is solved Also check that the configurations for each limiter and protections are correctly dimensioned for the relevant application Measures displayed on the HMI or via communication are very different from a known load If the measures indicated by the ECW500 are significantly different from the expected m...

Страница 82: ...hase supply Commutation frequency 2 kHz IMPEDANCE FOR THE LOAD Minimum resistance 7 Ohms DISSIPATED POWER Maximum 2200 W ENVIRONMENTAL CONDITIONS TEMPERATURE Operation 40 C to 50 C 40 to 122 F Storage 40 C to 85 C 40 to 185 F AIR RELATIVE HUMIDITY 10 to 90 non condensing ALTITUDE 0 to 1000m rated conditions 1000 to 4000m 1 current derating to each 100m above 1000m POLUTION DEGREE Degree 2 accordin...

Страница 83: ...terminal of 5 A Maximum error of measurement 2 5 Power consumption 1 VA OUTPUTS RELAYS 6 relays with contacts NO NC 250 Vac 8 A fixed functions 2 relays and programmable 4 relays Maximum opening capacity 35 Vdc 8 A 48 Vdc 1 2 A 125 Vdc 0 3 A Maximum commutation voltage 400 Vac ANALOG Isolated output in voltage or current 14 bits of resolution 0 to 10V for voltage impedance 10k 4 to 20mA for curren...

Страница 84: ...WEG Drives Controls Automação LTDA Jaraguá do Sul SC Brazil Phone 55 47 3276 4000 Fax 55 47 3276 4020 São Paulo SP Brazil Phone 55 11 5053 2300 Fax 55 11 5052 4212 automacao weg net www weg net ...

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