F0701 fault in WEG CFW500 Drive

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F0701 fault in WEG CFW500 Drive indicates a Remote HMI Communication Fault. This means the serial data link to the keypad was broken while the drive was actively relying on it for commands. 

Cause:

  • HMI cable is disconnected.
  • Communication interface with the HMI is incorrectly configured in parameter P0312.


Remedy:

Check parameter P0312 to verify that the HMI communication interface is configured correctly. Reconnect or replace the HMI serial cable.

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