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What is nSt on an Altivar Process Drive display?

Issue:
Troubleshooting nSt on the Altivar Process Drive

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

Environment:
All Product Lines for the Altivar Process Drive

Cause:
NSt = Drive state for freewheel stop.

Resolution:
NSt = Drive state for freewheel stop.

Troubleshooting tips:

  • Check Freewheel Stop Assignment. [Complete settings] [Generic functions] [Stop configuration] [Freewheel stop ass.]
  • Pushing the "STOP" key on the HMI will trigger nSt if your run command is coming from the terminal inputs.  Cycle drive power to clear it.
  • If a run command is present when power is applied to the drive and tCt (2 wire type) is not set to LEL (level), nSt will be triggered.
    • Check 2 wire type [Complete settings] [Command and Reference] [2-wire type]
  • If drive is in a Network setting and the parameter Control Mode [CHCF] is set to Separate or Not Separate then nSt may show until a run command is given. 
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