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

Product Line:
Altivar Machines,  Altivar 930

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

NOTE: ATV630 drives do not accept DB resistor connections.

If this article does not answer your question, check out our FAQ database that has answers to more commonly asked questions:
Frequently Asked Questions - Schneider Electric (se.com)

If this FAQ did not solve your issue, you can call us at 1-888-778-2733 Option 2 and then 4 or e-mail us at drive.products.support@se.com to create a case with our Technical Support Team.

If you are not located in North America, please contact your local Customer Care Center for assistance:
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