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ErrorLib — Industrial Fault Code Library

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1291

SERCOS state class 1: Cooling fault cut-off %s-axis.

Bosch Rexroth · Motion Control

What does 1291 mean?

This SERCOS state class 1 error indicates a cooling system malfunction for the specified axis, leading to a system cut-off. The drive attempts a best-effort response with torque release. This fault affects the servo loop or the drive's cooling system.

Common Causes

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

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Initiate a control reset in the active channel.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

1287Error during generating the stack for the IdleTask.1288SERCOS state class 1: Overload cut-off %s-axis.1289SERCOS state class 1: Amplifier overtemperature cut-off %s-axis.
Source: Bosch Rexroth Motion Control
Open Manual (Page 79)Search more codes in this manual