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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