Automatic Restart Monitoring Timeout

What does F07320 mean?

This fault occurs if the drive fails to successfully restart after the automatic restart monitoring time (p1213) has expired, even after multiple attempts. It can also be triggered if p1213 is set too low relative to other critical timing parameters like p1212, p0346, or flying restart delays, preventing successful motor start-up. The system attempts automatic acknowledgements, but persistent issues or incorrect parameter settings prevent successful restarts, potentially leading to prolonged downtime.

• Parameter P1213 (automatic restart monitoring time) set too short for the application's motor and load dynamics.
• Motor or driven load issues (e.g., mechanical binding, high inertia) preventing successful restart within the allowed time.
• Encoder feedback signal noise or instability during the restart attempt causing speed detection errors.
• Insufficient torque capability during restart due to incorrect motor data or insufficient current limits (P0640).

Click steps to track your progress.

1. 1

   Measure actual motor current (r0027) and speed (r0061) during restart attempts using an oscilloscope or drive trace function.

2. 2

   Adjust parameter P1213 (automatic restart monitoring time) to a value appropriate for the specific load (e.g., 10-30 seconds).

3. 3

   Verify the motor's mechanical system for any binding or obstruction that might prevent free rotation during start-up.

4. 4

   Confirm acceleration/deceleration ramps (P1120, P1121) are suitable for the load inertia to ensure a smooth restart.

5. 5

   Monitor feedback device signals (e.g., encoder counts) for stability and absence of noise during the restart sequence.