F0237 fault in WEG CFW500 Drive

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F0237 fault in WEG CFW500 Drive indicates a DeviceNet Connection Timeout. This means the DeviceNet network polling stopped unexpectedly, causing the drive to trip on communication loss. 

Cause:

  • Problem with the network master status.
  • Issues in the network installation, broken cable, or poor contact on the network connections/grounding.


Remedy:

Verify the DeviceNet master status. Check general cable routing, connection shield lines, and grounding terminals.

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