KUKA Robot codes
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KUKA Robot Controller

Power Supply · Basic

Alarm KRC0171

KUKA Robot KRC0171 - REBOOT AFTER POWERFAIL

This is an informational alarm indicating that the KUKA KRC controller has successfully restarted after a power loss event or intentional power cycle. The controller automatically reinitializes its systems, performs startup diagnostics, and restores operational parameters after power has been restored to normal levels. This alarm is typically not a fault condition but rather a status notification that documents the power recovery sequence.

KUKA RobotPower SupplyBasic

KRC0171

KUKA Robot KRC0171 - REBOOT AFTER POWERFAIL

REBOOT AFTER POWERFAIL

This is an informational alarm indicating that the KUKA KRC controller has successfully restarted after a power loss event or intentional power cycle. The controller automatically reinitializes its systems, performs startup diagnostics, and restores operational parameters after power has been restored to normal levels. This alarm is typically not a fault condition but rather a status notification that documents the power recovery sequence.

Common Causes

  • Mains power failure or voltage drop below minimum operating threshold
  • Circuit breaker or contactor disconnection during operation
  • Unplanned power outage in facility electrical supply
  • Intentional power cycling by operator or maintenance personnel
  • UPS (Uninterruptible Power Supply) timeout after extended power loss

Troubleshooting Steps

  1. 1Verify that mains power supply is stable and within acceptable voltage range (typically 3-phase 380-480V ±10%)
  2. 2Check the physical power connections and ensure all cable connectors are fully seated and undamaged
  3. 3Inspect the controller cabinet cooling fans and ensure proper ventilation to prevent thermal shutdown events
  4. 4Review the system log file to identify if additional fault codes preceded the reboot sequence
  5. 5Perform a complete system startup sequence including axis homing procedures and safety checks after power restoration
  6. 6If reboots occur repeatedly without external power loss, contact KUKA service to check the power supply unit and controller backup battery status

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