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ABB Error 50391 — Cartesian Soft Servo movement not allowed

Error

ABB 50391 (“Cartesian Soft Servo movement not allowed”): “Cartesian Soft Servo movement not allowed” is an ABB IRC5 event of major severity.

Updated 2026-10-23 · LogrobotLM reference

What it means

“Cartesian Soft Servo movement not allowed” is an ABB IRC5 event of major severity.

Related codes

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 →