A0090 fault in WEG CFW500 Drive

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A0090 alarm in WEG CFW500 Drive indicates an External Alarm. This means a peripheral safety or sensor switch connected to the digital inputs has triggered a warning state. 

Cause:

  • Wiring on DI1 to DI8 inputs is open or has poor contact.


Remedy:

Inspect terminal connections for digital inputs DI1 through DI8. Secure loose terminals and ensure reliable contact switch states.

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