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ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

26009

Motor blocked ({Drive})

Kuka · KSS 8.3 System Software

What does 26009 mean?

The motor for the specified drive is blocked, meaning it is unable to move or has encountered significant resistance preventing its commanded motion. This is a regular monitoring function that protects the motor from damage due to excessive force. In torque mode, this monitoring can be automatically deactivated by `SET_TORQUE_LIMITS()` with `monitor #off`.

Common Causes

  • The motor is experiencing excessive resistance or is physically blocked.
  • Mechanical obstruction preventing the motor from rotating.
  • Overload condition or fault within the drive system preventing motor movement ({Drive}).

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Identify the specific drive mentioned in the error message to locate the affected motor/axis.

  2. 2

    Physically inspect the robot's axis corresponding to the drive for any obstructions, mechanical binding, or foreign objects preventing movement.

  3. 3

    Check for excessive external loads applied to the robot that might be overloading the motor.

  4. 4

    Verify the motor's power supply connections and cabling for proper integrity and voltage.

  5. 5

    If operating in torque mode and this monitoring is not intended, ensure `SET_TORQUE_LIMITS(..., monitor #off)` is correctly configured for the drive.

Browse all codes in this manual (6)
Verified technical data. Last updated: April 2026

Related Faults

1100Stopped {(Axis number)}1105Positioning monitoring {(Axis number)}1422Variable Value Invalid
Source: KUKA KSS 8.3 System Software
Open Manual (Page 207)Search more codes in this manual