Browse FAQs

Will the measurement of the 24V on an Altivar drive be different if referenced from earth ground as opposed to the COM terminal of the drive?

Published date: 08 March 2019

Reference point for the 24V power supply.

Product Line:
Altivar VFD

All models and serial numbers with the exception of the ATV11.  (The ATV11 has a control voltage of +15V.)


Yes, the common (COM) terminal of the Altivar power supplies are floating (no connection to earth ground) so the voltage measured to the 24v from the earth ground can be different from the COM terminal.

Was this helpful?

What can we do to improve the information ?

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.