KUKA Robot codes
KUKA RobotSystemAdvanced

KRC0319

KUKA Robot KRC0319 - Ackn. deviation alarm masterslave

Ackn. deviation alarm masterslave

This alarm indicates that the positional deviation between a master and slave axis (or robot) has exceeded the middle limit threshold during synchronized motion operation. The master-slave synchronization monitoring detects when the actual position difference surpasses the configured warning threshold, typically occurring during coordinated dual-arm or dual-robot operations where precise position tracking is required.

Common Causes

  • Insufficient servo gain or tuning parameters for slave axis tracking
  • Mechanical backlash, wear, or play in slave axis gearbox or joints
  • Load imbalance or unequal weight distribution between master and slave
  • Communication delay or synchronization signal loss between master and slave controllers
  • Slave axis motor performance degradation or encoder feedback errors

Troubleshooting Steps

  1. 1Check the master-slave deviation limit settings in the KRC configuration files and compare against current application requirements
  2. 2Verify encoder feedback signals and resolution on both master and slave axes using the diagnostic interface
  3. 3Inspect mechanical components including gearboxes, couplings, and joint bearings for wear, backlash, or misalignment
  4. 4Optimize servo parameters (gains, bandwidth, filter settings) for the slave axis to improve tracking performance
  5. 5Test synchronization with reduced velocity and acceleration profiles to isolate whether the issue occurs at specific motion speeds
  6. 6Reset the alarm, re-teach the master-slave relationship if applicable, and verify proper calibration of both axes before resuming operation

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