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What causes a PID Feedback Error on an Altivar Process Drive?

Published date: 24 June 2019

My Process drive tripped and shows PFMF PID Feedback Error

Product Line:
Altivar Process Drive


Wiring / Programming


Rapid changes in flow like a Valve opened, so it will run full speed.  While valve remains open the drive shuts down on PFMF PID Feedback Error, because the loop is now open.  Go to Pump Functions Feedback Monitoring Feedback Monitoring and change to NO.  

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