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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.

LsrExternError

Laser flags critical error to cell control

Kuka · LaserTech 3.1

What does LsrExternError mean?

A critical error has occurred within the laser periphery, and this error is being flagged to the cell control system (e.g., PLC). Depending on the configuration, this might also indicate a robot-related error affecting the laser.

Common Causes

  • Laser system has reported a critical error to the cell control.
  • Laser internal fault requires immediate attention.
  • Critical alarm signal from laser device received.
  • Laser system failure impacting overall operation.
  • Laser system protection mechanism activated.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the laser system's HMI or diagnostic interface for detailed error messages or specific fault codes.

  2. 2

    Review the robot controller's error logs for any associated faults that might trigger this external flag.

Browse all codes in this manual (46)
Verified technical data. Last updated: April 2026

Related Faults

AcknWfdHeat- MessagePlease acknowledge errors on the wire heater unitCheckMedia- ControlCheck media control!CollectionErro- rOfLaserError of laser system ---> Resumption of process possible after dialog and forced reset of laser
Source: Kuka LaserTech 3.1
Open Manual (Page 76)Search more codes in this manual