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What causes BLF fault on ATV340 and how to I correct it?

Published date: 11 February 2019

Customer is experiencing BLF [Brake Control Fault] on an ATV340 series drive.

Product Line:

Brake Logic Control function is being used.

 Brake release current not reached.
 Brake engages frequency threshold [Brake engage freq] bEn only regulated when brake logic control
is assigned.

 Verify the drive/motor connection.
 Verify the motor windings.
 Verify the [Brk Release Current] Ibr and [Brake release I Rev] Ird settings.
 Apply the recommended settings for [Brake engage freq] bEn.



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