English
TROUBLESHOOTING AND MAINTENANCE
Protection/Alarm
Description
Possible causes
F237:
DeviceNet connection
timeout
It indicates that one or more DeviceNet I/O
connections has expired.
It occurs when, for some reason, after the cyclical
communication between the master and the product
has started, this communication is interrupted.
- Check the status of the network master.
- Check network installation, broken cable or
fault/poor contact on the connections with the
network.
F249:
Modbus TCP Timeout
It indicates that the device stopped receiving valid
telegrams for a period longer than the setting in
C9.6.3.
The time counting starts as soon as it receives the
first valid telegram.
- Check network installation, broken cable or
fault/poor contact on the connections with the
network, grounding.
- Ensure the Modbus TCP client always sends
telegrams to the equipment in a time shorter than the
setting in C9.6.3.
- Disable this function in C9.6.3.
A345:
IGBT P.U B1 High Load
Alarm of overload on IGBT 1 of phase U.
- High current at the inverter output.
F346:
IGBT P.U B1 Overload
Fault of overload on IGBT 1 of phase U.
- High current at the inverter output.
A348:
IGBT P.V B1 High Load
Alarm of overload on IGBT 1 of phase V.
- High current at the inverter output.
F349:
IGBT P.V B1 Overload
Fault of overload on IGBT 1 of phase V.
- High current at the inverter output.
A351:
IGBT P.W B1 High Load
Alarm of overload on IGBT 1 of phase W.
- High current at the inverter output.
F352:
IGBT P.W B1 Overload
Fault of overload on IGBT 1 of phase W.
- High current at the inverter output.
A354:
IGBT P.U B2 High Load
Alarm of overload on IGBT 2 of phase U.
- High current at the inverter output.
F355:
IGBT P.U B2 Overload
Fault of overload on IGBT 2 of phase U.
- High current at the inverter output.
A357:
IGBT P.V B2 High Load
Alarm of overload on IGBT 2 of phase V.
- High current at the inverter output.
F358:
IGBT P.V B2 Overload
Fault of overload on IGBT 2 of phase V.
- High current at the inverter output.
A360:
IGBT P.W B2 High Load
Alarm of overload on IGBT 2 of phase W.
- High current at the inverter output.
F361:
IGBT P.W B2 Overload
Fault of overload on IGBT 2 of phase W.
- High current at the inverter output.
F600:
Pulse Update Error
Fault related to updating the PWM pulses.
- Defect on the inverter internal circuits.
F606:
Power Monitor Comm
Lost
Communication fault between AUI and PMON.
- Defect on the inverter internal circuits.
- Electromagnetic interference above the level the
inverter withstands.
- Power board turned off.
F607:
SMM Comm Lost
Communication fault between PWC and SMM.
- Defect on the inverter internal circuits.
- Electromagnetic interference above the level the
inverter withstands.
- Safety interface board turned off.
F608:
Code Flow Failure
Internal fault during inverter operation.
Note:
- Reset the inverter.
- Load the factory default.
- If the problem persists, please contact WEG
assistance.
66 | CFW900
Summary of Contents for CFW900
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