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What would cause an SAFF (Safety Function Error) fault on a Process Drive?

Issue:
What would cause an SAFF (Safety Function Error) fault on a Process Drive?

Product Line:
Altivar Process Drives

Environment:
All

Cause:
NA

Resolution:
 
Probable Cause
  • Debounce time exceeded.
  • Internal hardware error.
  • STOA and STOB have a different status (high/low) for more than 1 second.

Remedy
  • Verify the wiring of the digital inputs STOA and STOB.
  • Contact your local Schneider Electric representative.

Clearing the Error Code

This detected error requires a power reset. 
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