F0079 fault in WEG CFW500 Drive

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F0079 fault in WEG CFW500 Drive indicates an Encoder Signal Fault. This means the physical signal from the encoder has been lost completely, likely due to a broken wire or damaged sensor. 

Cause:

  • Wiring between encoder and the accessory interface encoder is broken or interrupted.
  • Defective encoder.


Remedy:

Check encoder cabling and connections. Swap encoder if defective.

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