Cause: Brake Feedback comes when the status of the brake feedback contact is not correct compared to the brake logic control. This means the brake does not stop the motor quickly enough (detected by measuring the speed on the "Pulse
input" input).

"brF" fault in Schneider ATV950 drive "Brake Feedback" error. This means an issue with the brake feedback system. This fault typically occurs when the drive is not receiving the expected feedback signal from the brake mechanism.

Here are steps to troubleshoot and resolve the brF fault:

1. Inspect the Brake Mechanism:

• Physical Inspection: Check the brake mechanism for any signs of wear, damage, or mechanical issues that could affect its operation.
• Brake Engagement: Manually test the brake to ensure it engages and releases properly.

2. Verify Electrical Connections:

• Wiring: Inspect all wiring between the drive and the brake feedback sensor for any loose connections, breaks, or damage.
• Connector Integrity: Ensure that all connectors are properly seated and secured.

3. Check Brake Feedback Sensor:

• Sensor Condition: Ensure that the brake feedback sensor is functioning correctly and providing accurate signals.
• Signal Integrity: Use an oscilloscope to check the integrity of the feedback signals. Look for consistent, clean signals without noise or interruptions.

4. Drive Settings and Parameters:

• Feedback Parameters: Verify that the drive parameters related to brake feedback are correctly configured. This includes settings for feedback type, thresholds, and signal validation.
• Calibration: Perform a calibration of the brake feedback system if required by the drive’s setup procedure.

5. Monitor Brake Operation:

• Brake Status: Check the brake status in the drive’s diagnostic menu to see if the drive is receiving the expected feedback signals.
• Event Logs: Review the drive’s event logs to identify any patterns or recurring issues related to brake feedback.

6. Check for Electrical Interference:

• EMI: Ensure that the brake feedback wiring is not subject to electromagnetic interference (EMI) from other equipment or power lines. Use shielded cables if necessary.
• Grounding: Verify that the system is properly grounded to prevent electrical noise from affecting the feedback signals.