Support
Search FAQs
FAQ000271516
How can we help you today?

Can Harmony 3 phase control relays be used to monitor Variable Speed Drives?

Issue:
Can Harmony 3 phase control relays be used upstream or downstream a Variable Speed Drive (VSD)

Product Line:
Harmony Control Relays


Environment:
RM17, RM22, RM35, 3 phase control relays


Cause:
It’s not recommended to operate the RM17/RM22/RM35 products with VFD or VSD systems as the noise interference from the VFD/VSD can cause damage to the contol relay.


Resolution:
Do not connect 3 phase control relay to monitor output of Variable Speed Drive (VSD).

Released for: Schneider Electric USA
Explore more
Range:
Harmony Control Relays
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:
Harmony Control Relays
  • Help and Contact Center
  • Contact Sales
  • Find our Offices
  • Where to Buy
  • Tech Support: 877-342-5173
  • Careers
  • Company Profile
  • Investors
  • Newsroom
  • Report a Misconduct
  • Product Documentation
  • Software and Firmware
  • Product Selector
  • Product Replacement
  • DigestPLUS Online Catalogue
  • Blog
  • Events
  • Schneider Electric Community
  • Sustainability
  • Privacy Policy
  • Cookie Notice
  • Terms of use
  • Change your cookie settings