Browse FAQs

What can cause an CbF or circuit breaker error on the ATV630 and ATV930 Process drives?

Published date: 24 June 2019

Issue:
What can cause an CbF or circuit breaker error on the ATV630 and ATV930 Process drives?

Product Line:
 ATV630 and ATV930 Process drives

Environment:
All 

Cause:
Inop motor circuit breaker
No mains voltage present
When running if the VBUS is less than USFH after the LCT monitor mains time out.
When stopped  if the ULN is greater than 20vac the error will occur after the LCT Mains time out. 

Resolution:
Check the mains voltage
Check the main circuit breaker to see if its tripped. 
 

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.