Issue:
NLP status meaning on an ATV340.
Product Line:
Altivar Machine ATV340
Environment:
ATV340
Cause:
NLP means no line power or no line voltage. The drive seeing insufficient voltage on DC bus.
Resolution:
Check and verify the line voltage on L1, L2 and L3 of the drive. Go to the MON menu and check the ULn Mains voltage to see what the drive thinks the main voltage is.
Verify DC bus voltage on PA+ and PC- (if applicable). Compare your DC bus voltage readings divide by the square root of 2, to see if it matches the Mains voltage in the MON ULn display.
For example: For 230V rated drive the DC bus should read 324VDC.
If issue persists, contact SE support for next steps.
Released for: Schneider Electric Singapore
