WEG ECW500 - Characteristics

About the ECW500 .
18 | ECW500
This manual refers to the software version as indicated on the back cover. For instance, the version 1.0X means
are that do not affect the content of this manual.
The version installed on the ECW500 can be checked on the HMI in the path "Menu -> Measures -> OS/FW
Information" or by the Modbus 40112 address.
4.3 CHARACTERISTICS
The Voltage Regulator ECW500 is a high performance product intended to drive synchronous machines with
brushless excitation, for variation and control of its terminal voltage, excitation current, reactive power or power
factor.
Among its main characteristics, we may point out:
■ Keypad with 2.
■ Five control modes
- MTVC Terminal Voltage Control Mode
- MECC Excitation Current Control Mode
- MTVC_DROOP Voltage Control Mode with Reactive Droop
- MPFC Power Factor Control Mode
- MRPC Reactive Power Control Mode
■ Start ramp for 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 MECC mode according to configuration:
- Underfrequency protection
- PFL Protection Feedback Loss
- PED Protection Excitation Diodes
- Protection against overtemperature in the power module
- PEOC Protection Excitation Over Current
■ Protections that can be warned on the relays:
- PTOV Protection Terminal Over Voltage
- PTUV Protection Terminal Under Voltage
- PEL Protection Excitation Loss
- PEOV Protection Excitation Over Voltage
■ Datalog of up to 128 events, warnings and errors with date and time log
■ An analog input +/-10 Vdc or 4 to 20 mA to actuate in reference of all operating modes with adjustable gain
The block diagram below provides a general view of the ECW500 set: