F607 fault in WEG CFW900 Drive indicates Safety Module Communication is Lost. This means the drive’s main control unit lost its data link with the safety management module.
Cause:
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.
Remedy:
Verify safety interface board is powered and seated correctly. Protect connection ports from electromagnetic noise.
