Our Brands

Impact-Company-Logo-English Black-01-177x54

Welcome to the Schneider Electric Website

Welcome to our website.
		
How can we help you today?
Can the Altivar 31 be used for Constant Torque and Variable Torque loads?
Issue:
Constant and Variable Torque loads on ATV31.

Product Line:
Altivar 31

Environment:
ATV31 all series

Cause:
N/A

Resolution:
Yes.  It can be used for CT & VT applications.
Selection of the voltage/frequency ratio, parameter UFt in the drC menu, determines the torque setup. The available settings are as follows:
L: Constant torque (for motors connected in parallel or special motors)
P: Variable torque (pump and fan applications)
n: Sensorless flux vector control (for constant torque applications)
nLd: Energy savings (for variable torque applications not requiring high dynamics. This behaves in a way similar to the P ratio at no-load and the
n ratio with load.)
Modifying UFt will cause UFr to return to the factory setting of 20%.

Schneider Electric Canada

Explore more
Range:
Users group

Discuss this topic with experts

Visit our community and get advice from experts and peers on this topic and more
Explore more
Range:

Need help?

  • Product Selector

    Quickly and easily find the right products and accessories for your applications.

  • Get a Quote

    Start your sales inquiry online and en expert will connect with you.

  • Where to buy?

    Easily find the nearest Schneider Electric distributor in your location.

  • Help Center

    Find support resources for all your needs, in one place.

  • Products Documentation
  • Software Downloads
  • Product Selector
  • Product Substitution and Replacement
  • Help and Contact Center
  • Find our Offices
  • Get a Quote
  • Where to buy
  • Careers
  • Company Profile
  • Report a misconduct
  • Accessibility
  • Newsroom
  • Investors
  • EcoStruxure
  • Job Search
  • Register Your Product
  • Blog
  • Legal Information
  • Privacy Policy
  • Cookie Notice
  • Terms of use
  • Change your cookie settings