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What does an OBF fault code mean on the ATV58 drives?

Issue:
OBF fault meaning on the ATV58

Product Line:
Altivar ATV58

Environment:
All types

Cause:
OBF is over braking fault

Resolution:
Check the DEC time setting on the drive.  If it is very low, try increasing to allow the drive a longer ramp down time.

Check the Line voltage on L1, L2 and L3 to verify that it is within specifications.  High line voltage will translate to high DC bus voltage.

Monitor the DC bus voltage.

If  OBF appears on power up, verify that the display is not set to show the last fault on power up.

A dynamic brake resistor may be required if the load is overhauling.

Schneider Electric Mexico

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