Error when clearing diagn. class 1 error for %s-axis.

What does 837 mean?

The SERCOS command to reset a class 1 error cannot be set for the specified axis ('%s'). This is a servo loop or drive fault, indicating an inability to clear critical diagnostic errors, with no error recovery possible.

• Inability to set SERCOS command reset class 1 for the %s-axis.

Click steps to track your progress.

1. 1

   Verify the specific Class 1 diagnostic error reported by the Bosch Rexroth drive for the specified axis, as error 837 indicates an inability to clear a pre-existing Class 1 fault.

2. 2

   Inspect all motor power cables and feedback cables for the affected axis for damage, proper seating, and secure connections at both the drive and motor ends.

3. 3

   Measure the DC bus voltage and control supply voltage (e.g., 24VDC) at the drive input terminals for the affected axis, verifying they are within specified tolerances.

4. 4

   Verify drive parameters related to the motor, feedback system, and control loop for the affected axis against the original machine documentation.