FANUC Alarm SRVO-191 — SYSTEM Illegal Joint Speed

Manufacturer wording — SYSTEM Illegal Joint Speed (G:%d A:%d)
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC SRVO-191 (“SYSTEM Illegal Joint Speed”): The motion command exceeded specification. First check: Internal motion error.

Updated 2026-09-17 · LogrobotLM reference

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 →