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What is the InF9 or internal error 9 on the ATV630 and ATV930 Process Drives?

Published date: 15 June 2020

Internal Fault Error (InF9) on the Altivar Process Drives?

Product Line:
Altivar Process Drive (ATV630, ATV930, ATV650, ATV950, ATV660, ATV960, ATV680, ATV980)

All serial numbers for Altivar Process Drive


The fault indicates that the current measurement are not correct

Probable Cause
  • Bad Current Circuit/Sensors
  • Bad Control/Power Board
  • For customers who are not familiar with the drive please contact your local Schneider Electric Representative.
  • If those who are more familiar with the Altivar Process drive you can follow procedures below:
    • Check ribbon cable between control board and power board
    • Swap power board or control board
    • Change out current sensors
    • Replace/repair complete drive

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