Download Automatic Voltage Regulator ECW500

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ECW500
Automatic
Voltage Regulator
www.weg.net
ECW500 - Automatic Voltage Regulator
The ECW500 voltage regulator is a high-performance product designed to drive synchronous machines
with brushless excitation for variation and control of their rated voltage, exciting current, reactive power
or power factor.
Characteristics
JJ HMI with 2.5” LCD which shows different kinds of information
simultaneously
JJ Five control modes:
JJ MTVC - Voltage control mode
JJ MECC - Current control mode
JJ MTVC_DROOP - Voltage control mode with reactive droop
JJ MPFC - Power factor control mode
JJ MRPC - Reactive power control mode
JJ Start ramp for the MTVC and MECC modes
JJ Option of positive and negative excitation
JJ Protection against power module overtemperature
JJ LUF Limiter of U/F or Volts/Hertz operating on the MTVC and
MTVC_DROOP modes
JJ Other three limiters operating in all control modes (except
for MECC):
JJ LEOC - Limiter of exciting overcurrent
JJ LEUC - Limiter of exciting undercurrent by PxQ curve
JJ LTOC - Limiter of terminal overcurrent
JJ Settings of PID stability for MTVC / MTVC_ DROOP modes,
and PI for other modes
Inputs and Outputs
JJ 2 relays with fixed functions (ECW500 ON and general faults)
JJ 4 configurable relay outputs for the following events:
JJ Protection against exciting overvoltage (PEOV)
JJ Protection against terminal overvoltage (PTOV)
JJ Protection against terminal undervoltage (PTUV)
JJ Protection against underfrequency (PUF)
JJ Protection against exciting overcurrent (PEOC)
JJ Limiter of under excitation (LEUC)
JJ Operating on the MECC mode
JJ Protection against feedback loss (PFL)
JJ Protection of rotating diode (PED)
JJ Limiter of exciting overcurrent (LEOC)
JJ Limiter of terminal overcurrent (LTOC)
JJ Limiter of underfrequency (LUF)
JJ An analog input +/-10 V dc or 4 to 20 mA to actuate on the
reference of all operating modes with adjustable gain
JJ Digital inputs compatible with PLC and with the following
functions:
JJ Start
JJ Stop
JJ Automatic mode (MTVC)
JJ Manual mode (MECC)
JJ Enable parallel operation
JJ Disable parallel operation
JJ Enable online operation
JJ Disable online operation
JJ Increment reference
JJ Decrement reference
JJ Reset alarms
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ECW500 - Automatic Voltage Regulator
JJ
JJ
JJ
JJ
Protections that can stop the equipment or switch to
the MECC mode according to the configuration:
JJ Protection against underfrequency
JJ PFL - Protection against feedback loss
JJ PED - Protection of the rotating diodes
JJ Power Module - Protection against overtemperature
on the power module
JJ PEOC - Protection against exciting overcurrent
Protections that can be signaled on the digital relay
outputs
JJ PTOV - Protection against terminal overvoltage
JJ PTUV - Protection against terminal undervoltage
JJ PEL - Protection against excitation loss
JJ PEOV - Protection against exciting overvoltage
Log of up to 128 events, warnings and errors,
including date and time of the event
An analog input ±10 V dc or 4 to 20 mA to actuate
on the reference of all operating modes with
adjustable gain
Start digital input
Stop digital input
Enable parallel operation digital input
Disable parallel operation digital input
Enable online operation digital input
Disable online operation digital input
INC
DEC
RST
Increment active reference digital input
Decrement active reference digital input
Alarm reset digital input
Measurements
JJ Three-phase voltage of the synchronous machine
JJ Current of the synchronous machine
JJ Exciting current
JJ DC link voltage
JJ Power supply voltage
JJ Exciting voltage
JJ Power module temperature
www.weg.net
Soft-Starter
The ECW500 has a soft-start function for the MTVC and
MECC operating modes, which are the offline modes. This
function gradually increases the reference of the operating
mode up to the end value set. With the available parameters,
it is possible to set the start level of the ramp (in terms of
percentage of the end value) and the time it will take the
reference to reach the end value.
Special Functions
JJ Self-calibration of the measurement of the exciting current
JJ Self-calibration of the analog inputs
JJ Generation of events, warnings and errors
JJ Loading of the parameters with the factory settings
Operating Interface
HMI with graphic display and navigation menu
JJ Start/Stop and Alarm Reset keys (which can be enabled
or disabled)
JJ Password for data protection
JJ Option of remote HMI on panel door
JJ
Technical Specifications
Power Data
Alternate voltage
Power supply
Continuous voltage²
Absorbed power
Current
Output
Voltage
Load impedance
Dissipated power
Temperature
Environmental
conditions
Frame
Air relative humidity
Altitude
Pollution degree
Degree of protection
Maximum of 242 V ac three-phase or single-phase, between lines
Recommended: 1.73 x VExc_Nominal (rated exciting current)1
Frequency of 30 Hz to 500 Hz
Up to 325 V dc
For three-phase power supply, it is necessary 1.63 x output power
For single-phase power supply, it is necessary 1.94 x output power
Rated of 20 A @ 110 V dc
Maximum of 30 A @ 210 V dc, for 1 minute
Measurement range: from 0.5 A to 35 A
Maximum measurement error: ±5%
Maximum of 1.35 x VL (line voltage), for three-phase power supply
Maximum of 0.90 x VL (line voltage), for single-phase power supply
Switching frequency of 2 kHz
Minimum resistance of 7 Ohms
Maximum of 2,200 W
Operation: -40 °C to 50 °C (-40 to 122 F)
Storage: -40 °C to 85 °C (-40 to 185 F)
10 to 90% non-condensing
0 to 1,000 m: rated conditions
1,000 to 4,000 m: current derating of 1% for each 100 m above 1,000 m
Degree 2, according to EN 50178 and UL 508C
IP20
Electronics / General Data
Power supply
Control
Supply³
Consumption
Regulators
Performance
Analog
Digital
Inputs
Voltage feedback
Current feedback
Outputs
Digital (relay)
Safety
Protections
Interfaces
HMI
USB
RS485 / 422
85 to 242 V ac, single-phase, 50/60 Hz or 110 to 325 V dc
Maximum 72 VA (alternate voltage) or 43 W (direct voltage)
Execution rate of 4 ms
Regulation of ±0.25% on the MTVC mode, with the recommended exciting voltage
Stability of ±0.1% on the MTVC mode, with constant load
2 isolated differential inputs, impedance of 200 kΩ (voltage) or 249 Ω (current), for reference of the operating modes
-10 V to +10 V, resolution of 11 bits + signal and 4 to 20 mA, resolution of 12 bits, with identification of broken wire for current <4 mA
11 isolated digital inputs, 24 V dc, without polarity, fixed functions
Maximum power for each high level input: 420 mW
Rated value: 115 V ac between lines, single-phase (A-C) or three-phase (A-B-C)
Maximum measurements: 161 V ac between lines
Maximum measurement error: ±1.0%
Absorbed power: 1 VA
Frequency measurement: from 10 Hz to 150 Hz
Rated value: 1 A or 5 A, 50/60 Hz, on separate terminals
Maximum measurements: 1.2 A (for the terminal of 1 A) and 6 A (for the terminal of 5 A)
Maximum measurement error: ±2.5%
Absorbed power: 1 VA
6 relays with NO/NC contacts, 250 V ac, 8 A, fixed functions (2 relays) and programmable functions (4 relays)
Maximum opening capacity: 35 V dc: 8 A, 48 V dc: 1.2 A, 125 V dc: 0.3 A
Maximum switching frequency: 400 V ac
Undervoltage and overvoltage on the machine, with adjustable actuation levels
Phase loss on the power
Underfrequency on the machine
Overvoltage on the excitation (adjustable)
Overvoltage on the DC Link
Overtemperature on the power (adjustable)
Overcurrent on the excitation (adjustable)
Excitation loss
Feedback loss (adjustable)
Fault detection on the rotating diodes
Fault detection on the CPU
It enables to access/change all the parameters.
Indication of alarms, faults and events
Possibility of external mount via serial cable up to 10 m
Only to update firmware
Full/Half Duplex, 9,600 bps to 115,200 bps, 8 bits, Modbus-RTU
Notes: 1) For VExc_Nom=32 V dc, the recommended supply voltage would be 55 V ac. Supply voltages much higher than those values may worsen the dynamic response.
2) The auxiliary DC input for power supply allows a machine without enough remanent voltage to be controlled when the supply comes from the machine
terminals. The source must be galvanically isolated from the power supply.
3) The supplies of the electronics are redundant and require an isolation transformer on the AC input if they have the same source.
ECW500 - Automatic Voltage Regulator
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Cod: 50060078 | Rev: 00 | Date (m/y): 02/2016
The values shown are subject to change without prior notice.
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