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How to troubleshoot ObF fault in an Altivar 312 drive?

Published date: 05 June 2019

Getting ObF fault on an Altivar 312 drive.

Product Line:  
AC Drives and VFDs

Altivar 312 AC Drives

If the drive trips while running, then check for power surges or spikes. Need to monitor for voltage surges and spikes. One may need to install a line reactor or a surge suppressor.

If the drive is tripping while decelerating, then increase decelerating time. You may also need to add a Dynamic Braking resistor. For DBR selection assistance, contact MTE Corporation

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