{"searchBar":{"inputPlaceholder":"Search by keyword or ask a question","searchBtn":"Search","error":"Please enter a keyword to search"}}
{}

Schneider Electric USA Website

Welcome to our website.

Select your location

Welcome the the Schneider Electric French website. It looks like you are located in the United States, would you like to change your location?

Traduisez en francais
{"support":{"yesButton":"Yes","noButton":"No","feedback":{"title":"What can we do to improve?"},"submitButton":"Submit","successMessage":"Thank you for your feedback","title":"Was this helpful?","feedbackPercentLabel":"of people found this helpful","captcha":{"error":"Please check the box"}}}
Search FAQs

What is a USF fault on ATV61/71?

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.
Explore more

Can't find what you are looking for?

Reach out to our Customer Care team to receive information on technical support, assistance for complaints and more.
Explore more