What causes KUKA Robot alarm KRC0153?

Accumulator battery has reached end of life or is degraded. Insufficient charging time between power cycles or after emergency stops. Faulty accumulator charging circuit or voltage regulator in the KPS module. Poor electrical connections or corrosion on accumulator terminals. Repeated emergency stop activations draining accumulator charge without adequate recharge time.

How do I fix KUKA Robot alarm KRC0153?

1. Check the accumulator charging status by monitoring the KPS module LED indicators and voltage readings in the controller diagnostics menu 2. Allow the robot controller to remain powered on for an extended period (typically 30-60 minutes) to allow full accumulator recharge from the power supply 3. Inspect all electrical connections to the KPS module and accumulator terminals for corrosion, loose contacts, or damage, and clean/reseat as needed 4. Verify the KPS module voltage output and charging circuit functionality using a multimeter at the accumulator terminals 5. If voltage remains low after extended charging, replace the accumulator battery module following KUKA service procedures for your specific KRC controller generation 6. Perform a full system power cycle test to confirm the alarm clears and accumulator maintains proper voltage during normal operation

KUKA Robot codes

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KUKA Robot Controller

Power Supply · Basic

Alarm KRC0153

KUKA Robot KRC0153 - Accuvoltage at <kps number> below <voltage level> during last buffering

This alarm indicates that the accumulator (backup battery) voltage in the specified KPS (KUKA Power Supply) module fell below the minimum threshold required to safely buffer the robot controller during a shutdown sequence. The accumulator failed to maintain sufficient charge to preserve critical system states and program memory during power loss or emergency stop events.

KUKA RobotPower SupplyBasic

KRC0153

KUKA Robot KRC0153 - Accuvoltage at <kps number> below <voltage level> during last buffering

Accuvoltage at <kps number> below <voltage level> during last buffering

Common Causes

Accumulator battery has reached end of life or is degraded
Insufficient charging time between power cycles or after emergency stops
Faulty accumulator charging circuit or voltage regulator in the KPS module
Poor electrical connections or corrosion on accumulator terminals
Repeated emergency stop activations draining accumulator charge without adequate recharge time

Troubleshooting Steps

1Check the accumulator charging status by monitoring the KPS module LED indicators and voltage readings in the controller diagnostics menu
2Allow the robot controller to remain powered on for an extended period (typically 30-60 minutes) to allow full accumulator recharge from the power supply
3Inspect all electrical connections to the KPS module and accumulator terminals for corrosion, loose contacts, or damage, and clean/reseat as needed
4Verify the KPS module voltage output and charging circuit functionality using a multimeter at the accumulator terminals
5If voltage remains low after extended charging, replace the accumulator battery module following KUKA service procedures for your specific KRC controller generation
6Perform a full system power cycle test to confirm the alarm clears and accumulator maintains proper voltage during normal operation

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Always verify with your machine manual or a certified technician before performing service procedures.