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KUKA Robot Controller
Power Supply · Basic
KUKA Robot KRC0150 - Check accumulator <kps number>
This alarm indicates a pressure accumulator fault detected in the KUKA KRC controller's pneumatic or hydraulic system, where <kps number> identifies the specific accumulator circuit. The controller has detected an abnormal condition such as insufficient pressure, loss of precharge, or a mechanical failure in the accumulator unit. This alarm requires immediate inspection of the accumulator system as it may affect robot safety functions, brake release, or tool operation depending on the circuit assignment.
KRC0150
KUKA Robot KRC0150 - Check accumulator <kps number>
Check accumulator <kps number>
This alarm indicates a pressure accumulator fault detected in the KUKA KRC controller's pneumatic or hydraulic system, where <kps number> identifies the specific accumulator circuit. The controller has detected an abnormal condition such as insufficient pressure, loss of precharge, or a mechanical failure in the accumulator unit. This alarm requires immediate inspection of the accumulator system as it may affect robot safety functions, brake release, or tool operation depending on the circuit assignment.
Common Causes
- Accumulator precharge pressure loss due to internal gas leakage or valve degradation
- Accumulator bladder rupture or mechanical damage requiring unit replacement
- Low supply pressure from the compressor or pump unable to charge the accumulator
- Faulty pressure transducer or sensor providing incorrect feedback to the controller
- Blocked or restricted accumulator inlet line or filter element requiring cleaning or replacement
Troubleshooting Steps
- 1Document the exact <kps number> identifier and note when the alarm occurs (startup, motion, specific axis) to determine the affected circuit
- 2Verify the main pneumatic or hydraulic supply pressure at the source and confirm it meets the system specification (typically 6-8 bar for pneumatics)
- 3Inspect the accumulator unit visually for physical damage, corrosion, or leakage around the valve assembly and safety block
- 4Check the precharge pressure of the accumulator using a calibrated pressure gauge on the isolation valve; compare against the design specification and repressurize or replace if deficient
- 5Test the accumulator pressure transducer output using a multimeter or oscilloscope to verify it provides correct analog/digital signals to the controller
- 6If the alarm persists after pressure verification, isolate the accumulator and perform a system function test; if normal operation resumes, replace the accumulator unit
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