Browse FAQs

What causes a DB unit short circuit on an ATV61 drive?

Published date: 31 July 2020

Getting DB unit short circuit fault on Atlivar 61 or Altivar 71.

Product Line:
Altivar Machines, Altivar 61, Altivar 71


This fault appears only for the drives > 90kW.
Short circuit inside the braking module.
Braking resistor in short circuit.
Short circuit to the ground.
BRA=NO (ramp autoadaptation) and no braking resistor.

Check the wiring of the braking unit and the resistor.
Check the configuration of the drive.
Disable the BUF parameter in the Fault Management menu.

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.