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What is an OSF (over voltage) fault on an ATS22 soft start?

Published date: 09 January 2019

Issue:
OSF fault on an ATS22 soft start.

Product Line:
ALTISTART 22, ATS22

Environment:
All

Cause:
Over voltage condition

Resolution:
Overvoltage fault.  
Check ULN parameter under CONF menu.  This should match your line voltage.
Check the power supply circuit and voltage.  Reading will need to be balanced phase to phase on L1, L2, and L3 and match voltage spec for the softstart and motor.
Check OSD and OST parameters in PRO menu for possible adjustments.

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