F0797 fault in WEG CFW701 Drive indicates a Low Level of the External PID 2 Process Variable. This means the second external PID feedback sensor remained below the safe threshold, triggering a system fault.
Cause:
Parameter P1095 is programmed in 2 and the External PID controller 2 feedback value is remaining below the value programmed in P1096 for the time programmed in P1097.
Remedy:
Check the physical process line and feedback loop sensors. Verify the parameter configurations for P1095, P1096, and P1097.
