What causes KUKA Robot alarm KRC0016?

Excessive simultaneous axis motion causing peak current draw beyond KPS rated capacity. Defective or degraded KPS capacitor bank failing to regulate voltage ripple. Short circuit or ground fault in motor windings or servo drive circuits drawing excessive current. Undersized KPS unit selected for the robot payload and duty cycle requirements. Faulty DC bus voltage monitoring circuit or sensor providing incorrect feedback signal.

How do I fix KUKA Robot alarm KRC0016?

1. Verify the KPS unit model matches the robot configuration and check nameplate specifications against actual system power requirements 2. Measure DC bus voltage at the KPS output terminals with a multimeter under load to confirm the alarm condition 3. Inspect all motor connectors and servo drive cables for signs of damage, loose connections, or insulation breakdown 4. Check the teach pendant and control software for program sequences that may create simultaneous high-torque demands on multiple axes 5. Test the KPS capacitor bank ESR (Equivalent Series Resistance) and capacitance values using appropriate test equipment; replace if degraded 6. If voltage remains elevated after inspection, contact KUKA service to replace the KPS unit or upgrade to a higher capacity model

KUKA Robot codes

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KUKA Robot Controller

Communication · Basic

Alarm KRC0016

KUKA Robot KRC0016 - OUTPUT MONITORING DC BUS VOLTAGE KPS: @P1@

This alarm indicates that the DC bus voltage of the specified KPS (KUKA Power Supply) unit has exceeded safe operating limits due to overload conditions. The monitoring circuit has detected sustained voltage levels above the nominal range, which can damage power electronics and connected servo drives if not corrected immediately. This typically occurs when the power supply cannot adequately handle the combined current demand of all connected axes and peripheral devices.

KUKA RobotCommunicationBasic

KRC0016

KUKA Robot KRC0016 - OUTPUT MONITORING DC BUS VOLTAGE KPS: @P1@

OUTPUT MONITORING DC BUS VOLTAGE KPS: @P1@

Common Causes

Excessive simultaneous axis motion causing peak current draw beyond KPS rated capacity
Defective or degraded KPS capacitor bank failing to regulate voltage ripple
Short circuit or ground fault in motor windings or servo drive circuits drawing excessive current
Undersized KPS unit selected for the robot payload and duty cycle requirements
Faulty DC bus voltage monitoring circuit or sensor providing incorrect feedback signal

Troubleshooting Steps

1Verify the KPS unit model matches the robot configuration and check nameplate specifications against actual system power requirements
2Measure DC bus voltage at the KPS output terminals with a multimeter under load to confirm the alarm condition
3Inspect all motor connectors and servo drive cables for signs of damage, loose connections, or insulation breakdown
4Check the teach pendant and control software for program sequences that may create simultaneous high-torque demands on multiple axes
5Test the KPS capacitor bank ESR (Equivalent Series Resistance) and capacitance values using appropriate test equipment; replace if degraded
6If voltage remains elevated after inspection, contact KUKA service to replace the KPS unit or upgrade to a higher capacity model

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