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Video: What can cause an NLP drive state on the ATV630 and ATV930 Process drives?

Published date: 19 September 2018

Issue:
Understanding the NLP Status on Altivar Process Drives

Product Line:
ATV630 and ATV930

Environment:
All Models

Cause:
No Mains voltage on L1 , L2  and L3 of the drive.

Resolution:
[No Mains Voltage] nLP means control P24 and com is powered on main control board of the drive but there is no voltage on L1, L2 and L3 feeding the input of the drive. 
DC bus may not be powering up, which could indicate drive issue. Suggest to measure the DC bus.
Could be a power or control board issue.

 

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