A0700 fault in WEG CFW500 Drive

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A0700 alarm in WEG CFW500 Drive indicates a Communication Fault with Remote HMI. This means the serial data link to the keypad broke, but no critical frequency references were active at the time. 

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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