FANUC Alarm SRVO-461 — Hardware error…
Error- Hardware
- servo amplifier
- Controllers
- R-30iB (this generation only)
- FANUC class
- SERVO (default, not tabulated in the sources)
Manufacturer wording — Hardware error%s
The manual prints placeholders; your controller fills them in with the real group, axis or number.
FANUC SRVO-461 (“Hardware error…”): Error detected in an internal circuit of the amplifier.
Updated 2026-10-22 · LogrobotLM reference
What it means
Error detected in an internal circuit of the amplifier.
What to check
- Replace the amplifier.
- Note: R-30iB code only; the suffix specifies the subassembly.
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 →