You are currently viewing the content available in Vietnam. If you are looking for information for another region, please select the correct country from the top-left dropdown in the page and 'Navigate to Browse FAQs' in the Support menu.
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 that 24Vdc control power is applied to P24 - 0V on the main control board of the drive, but there is no power circuit voltage on L1, L2 and L3 feeding the input of the drive. This may be an intended status.
The DC bus may not be powering up, which could indicate a drive issue. Suggest to measure the DC bus voltage across PA+ and PC- terminals. Expect to measure a value = line voltage x 1.414.
I DC bus is powered OK, then suspect a power board or control board 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 that 24Vdc control power is applied to P24 - 0V on the main control board of the drive, but there is no power circuit voltage on L1, L2 and L3 feeding the input of the drive. This may be an intended status.
The DC bus may not be powering up, which could indicate a drive issue. Suggest to measure the DC bus voltage across PA+ and PC- terminals. Expect to measure a value = line voltage x 1.414.
I DC bus is powered OK, then suspect a power board or control board issue.
Released for: Schneider Electric Vietnam
Need help?
Start here!
Find answers now. Search for a solution on your own, or connect with one of our experts.
Contact Support
Reach out to our customer care team to receive more information, technical support, assistance with complaints and more.
Where to buy?
Easily find the nearest Schneider Electric distributor in your location.
Search FAQs
Search topic-related frequently asked questions to find answers you need.
Contact Sales
Start your sales inquiry online and an expert will connect with you.
