Excessive Position Error Amount During Stop

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This alarm indicates that when the servo axis is commanded to stop, its actual position deviates from the commanded position by an amount exceeding a predefined tolerance (position error limit). This suggests an inability to hold position or an unexpected disturbance while stationary.

• External force acting on the axis while stopped.
• Mechanical binding or excessive backlash in the axis.
• Insufficient holding torque from the servo motor or faulty brake (if equipped).
• Incorrect position gain (Parameter 1825) or stopping parameters for the servo.
• Faulty encoder or feedback system.

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

1. 1

   Check for any external forces, such as tooling weight or workpiece sag, that might be moving the axis while it is supposed to be stopped.

2. 2

   Inspect the mechanical system for backlash, play, or binding that allows movement when the motor is stopped.

3. 3

   Verify the servo motor's holding torque and the functionality of any mechanical brake, adjusting or repairing as necessary.

4. 4

   Review and adjust servo parameters related to position gain (e.g., Parameter 1825) and position error limits (e.g., Parameter 1829), ensuring they are appropriate for the application.

5. 5

   Monitor encoder feedback for stability and accuracy when the axis is stationary, checking for noise or erratic signals.