1289

SERCOS state class 1: Amplifier overtemperature cut-off %s-axis.

Bosch Rexroth · Motion Control

What does 1289 mean?

This SERCOS state class 1 error signals an overtemperature condition in the amplifier of the specified axis, resulting in a cut-off. The drive will attempt to respond appropriately with a torque release. This fault is categorized as a servo loop or drive fault.

Common Causes

  • Servo loop fault
  • Drive fault
  • Amplifier overtemperature on the %s-axis.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Initiate a control reset in the active channel.

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Verified technical data. Last updated: March 2026

Related Faults

1291SERCOS state class 1: Cooling fault cut-off %s-axis.1301SERCOS state class 1: Position limit of %s-axis exceeded.1290SERCOS state class 1: Motor overtemperature cut-off %s-axis.
Source: Bosch Rexroth Motion Control
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