Issue:
USF fault on ATV61/71.
Product Line:
All drives.
Environment:
All.
Causes:
Low voltage on drive's DC bus.
Resolution:
USF is a mains undervoltage fault that appears when the drive's DC bus goes below a certain value.
Check the Mains voltage on L1, L2, and L3 with a true RMS meter.
Measure DC voltage on drive's DC bus PA (+) and PC(-) with meter.
USF fault on ATV61/71.
Product Line:
All drives.
Environment:
All.
Causes:
Low voltage on drive's DC bus.
Resolution:
USF is a mains undervoltage fault that appears when the drive's DC bus goes below a certain value.
Check the Mains voltage on L1, L2, and L3 with a true RMS meter.
Measure DC voltage on drive's DC bus PA (+) and PC(-) with meter.
Released for: Schneider Electric Hong Kong
Need help?
Product Selector
Quickly and easily find the right products and accessories for your applications.
Get a Quote
Start your sales enquiry online and an expert will connect with you.
Where to buy?
Easily find the nearest Schneider Electric distributor in your location.
Help Centre
Find support resources for all your needs, in one place.
