FANUC Alarm SRVO-302 — SERVO Set Hand broken to ENABLE
Error- Hardware
- robot signals and connection cable
- Controllers
- R-J3iB / R-30iA / R-30iB
- FANUC class
- SERVO
- Hardware family
- FANUC brake, fuse, robot signal and position error alarms
FANUC SRVO-302 (“SERVO Set Hand broken to ENABLE”): A signal of safety hand broken is not detected when setting of HBK is disabled. First check: Change Hand broken to Enable.
Updated 2026-10-22 · LogrobotLM reference
Description
A signal of safety hand broken is not detected when setting of HBK is disabled. Setting of Hand broken is not correct
Remedy
Change Hand broken to Enable. Press reset key to clear alarm.
Field diagnosis
The HBK signal is active while the monitoring is disabled: the circuit physically exists.
What to check
- Reset; check the connection of the hand breakage signal, and enable the function in the configuration if the circuit is indeed present.
- Note: Same family as SRVO-300.
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 →