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What can cause the ATV630 and ATV930 Process drives trip on the bUFO or braking unit resistor open circuit fault?

Published date: 25 September 2018

Issue:
What can cause the ATV630 and ATV930 Process drives trip on the bUFO or braking unit resistor open circuit fault?

Product Line:
ATV630 and ATV930 Process drives

Environment:
All 

Cause:
Open braking resistor 

Resolution:
Check braking resistor wiring
Check the resistor to see it its open
Check the parameter BRI1

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