What does an OBF fault mean on an ATV12 drive?
Resolution:
The OBF (Over Braking Fault) occurs when the drive detects excessive braking energy, typically caused by rapid deceleration or high load inertia.
Possible causes are:
- Deceleration time is too short
- High inertia load (motor or driven machine)
- Input line voltage too high
- Voltage spikes or surges in the power supply
To mitigate the issues:
- Increase the deceleration time (DEC) to reduce braking stress
- Install a braking resistor or braking module if required
- Verify the line supply voltage is within limits- Must not exceed +20% of the rated voltage during operation
- Check for voltage fluctuations, spikes, or unstable power conditions
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 atdrive.products.support@se.comto 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:
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