KUKA Robot codes
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KUKA Robot Controller

Parameter · Basic

Alarm KRC0621

KUKA Robot KRC0621 - Invalid parameter value

This alarm indicates that a parameter value assigned to a robot channel has exceeded its maximum allowable limit as defined in the robot's configuration. The KRC controller monitors channel parameters during initialization and runtime, and triggers this error when the specified value surpasses the upper boundary constraint. This typically occurs during parameter configuration, teaching, or when loading motion programs with invalid channel settings.

KUKA RobotParameterBasic

KRC0621

KUKA Robot KRC0621 - Invalid parameter value

Invalid parameter value

This alarm indicates that a parameter value assigned to a robot channel has exceeded its maximum allowable limit as defined in the robot's configuration. The KRC controller monitors channel parameters during initialization and runtime, and triggers this error when the specified value surpasses the upper boundary constraint. This typically occurs during parameter configuration, teaching, or when loading motion programs with invalid channel settings.

Common Causes

  • Channel velocity parameter set above maximum allowed speed for the axis
  • Channel acceleration parameter exceeds the maximum acceleration limit
  • Incorrect parameter entry in the robot configuration file or teach pendant
  • Loading legacy program data with parameters incompatible with current KRC version
  • Manual parameter modification without validation against axis-specific constraints

Troubleshooting Steps

  1. 1Review the KRC system messages log to identify which specific channel parameter exceeded its maximum value
  2. 2Consult the robot's technical documentation or axis parameter table to determine the maximum allowable value for the affected channel
  3. 3Access the robot configuration files or use the KRC teach pendant to locate and correct the out-of-range parameter
  4. 4Verify the parameter value against the robot model specifications, payload configuration, and any safety constraints
  5. 5Clear the alarm using the KRC controller interface and reinitialize the affected channel or axes
  6. 6Test robot movement in manual mode to confirm the parameter correction resolves the issue before returning to automatic operation

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