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What can trigger a bUF or braking unit resistor short circuit fault on the ATV630 and ATV930 Process drives?

Published date: 25 July 2019

Issue:
Getting a bUF or braking unit resistor short circuit fault on the ATV630 and ATV930 Process drives.

Product Line:
ATV630 and ATV930 Process drives

Environment:
All 

Cause:
Short circuit inside the braking module
Braking resistor is shorted out
Short circuit to ground
BRA=No ( ramp auto adaptation) and no DB resistor

Resolution:
Check the braking units wiring and the resistor connections
Check the drives configurations

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