FANUC Alarm SRVO-154 — SERVO HVAL(CNV-DC) alarm

Manufacturer wording — SERVO HVAL(CNV-DC) alarm (G:%d A:%d)
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC SRVO-154 (“SERVO HVAL(CNV-DC) alarm”): The DC voltage of the main circuit power supply is abnormally high. First check: Refer to SRVO-044.

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 →