A0752 alarm in WEG CFW500 Drive indicates an unprogrammed Digital Input for PID Auto/Manual selection. This means the drive requires a digital input to toggle PID modes, but none is configured.
Cause:
- Parameter P0263, P0264, P0265, or P0266 was not programmed for 20.
Remedy:
Set the assigned digital input parameter (P0263 to P0266) to 20 to enable automatic/manual control routing.
