A0788 alarm in WEG CFW500 Drive indicates a High Level of the External PID Process Variable. This means the external PID feedback sensor reading has exceeded its maximum programmed threshold.
Cause:
Parameter P1075 is programmed for 1, and the process variable of the external PID controller remained above the value programmed in P1078 for the duration set in P1079.
Remedy:
Verify process line sensors. Check parameter thresholds set in P1075, P1078, and P1079.
