What is a possible cause of OSF fault on the ATV31 or ATV312 drive?
Issue:
What is a possible cause of OSF fault on ATV31 or ATV312 drive?
Resolution:
If this causes the DC bus voltage to go too high, the drive will trip on ObF. One possible cause for ObF to occur is a decel time that the drive is not able to meet because of excessive inertia from the motor load. See FAQ on ObF for resolutions.
- Check the line voltage at L1, L2, L3 on the drive terminals
- Compare the line voltage reading with the ULn display (SUP menu)
- Measure the DC Bus voltage
- Monitor line power for voltage spikes
If this article does not answer your question, check out our FAQ database that has answers to more commonly asked questions:
Frequently Asked Questions - Schneider Electric (se.com)
If this FAQ did not solve your issue, you can call us at 1-888-778-2733 Option 2 and then 4 or e-mail us at drive.products.support@se.com to create a case with our Technical Support Team.
If you are not located in North America, please contact your local Customer Care Center for assistance:
Support | Schneider Electric Global (se.com)
Released for: Schneider Electric USA
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