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KUKA Error KSS27003 — Brakes (SafeOperation/SafeMove function)

Info

KUKA KSS27003 (“Brakes (SafeOperation/SafeMove function)”): Brake test request: normal after a cold start on a robot equipped with SafeOperation/SafeMove, or after the validity period. Likely part: Motor brake (Motor brake).

Updated 2026-09-09 · LogrobotLM reference

Cause

Brake test request: normal after a cold start on a robot equipped with SafeOperation/SafeMove, or after the validity period. The robot remains restricted as long as the test has not been executed.

Part to check / replace

KUKA KSS27003 points to the hardware below — start here before ordering.

Tap a part for every code that points to it — and verify the exact variant for your controller before ordering.

Related codes

KSS00126Servo drive (KSD/KSP) + mechanical drive train of the axisKSS00276Machine data vs hardware (RDC/EDS, disk)KSS00364Mode selector / 27 V power supply of the PC (KPC) / CIBKSS01146Motor / axis brake / servo drive

Same hardware involved

1528Motor brakeKSS15047Motor brakeKSS26158Motor brake

Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. How this reference is built →