A0140 alarm in WEG CFW500 Drive indicates a Profibus DP Module Access Error. This means the internal connection between the drive and the Profibus option card is failing.
Cause:
- The Profibus DP module is not seated properly in the slot.
- Hardware errors due to improper handling or installation of the accessory module.
Remedy:
Verify Profibus module mounting in slot. Replace communication module if handling errors damaged the pins.
