A0786 fault in WEG CFW500 Drive

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A0786 alarm in WEG CFW500 Drive indicates a Low Level of the External PID Process Variable. This means the external PID feedback sensor reading has dropped below its minimum programmed threshold. 

Cause:

Parameter P1075 is programmed for 1, and the process variable of the external PID controller remained below the value programmed in P1076 for the duration set in P1077.

Remedy:

Verify the process feedback loops and verify configurations in parameters P1075, P1076, and P1077.

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