FANUC E-stop unit
FANUC spare part — Updated 2026-09-16
Also written “Estopunit”.
FANUC E-stop unit — is referenced by 7 FANUC fault codes in the LogrobotLM catalogue — including SRVO-021, SRVO-134, SRVO-136. Those are the faults that put this part under suspicion; confirm the real cause against your robot's backup before ordering a replacement.
Orderable part numbers
- A20B-2200-0650Emergency stop board (inside the E-stop unit; linked to SRVO-001/004/007/213/375 alarms)R-30iB / R-30iB Plus (A-cabinet)
- A20B-2005-0150emergency stop boardR-30iB Mate
- A20B-2103-0170emergency stop boardR-30iB Mate Plus
- A20B-1008-0740emergency stop unit PCBR-30iA
- A20B-1007-0800emergency stop unit board
- A05B-2601-C412E-stop unit, 30A (E-stop board, breaker, contactors)R-30iB
Controller generation matters — always match the exact variant on your unit's label before ordering.
Fault codes that point to this part
Searching for a E-stop unit? These FANUC faults name it among the parts to check. Open any one for the meaning and what to check — then confirm which cause is really yours before ordering.
Often diagnosed together
Parts cited by the same faults as E-stop unit — check the whole chain before concluding. · Organes cités par les mêmes défauts que E-stop unit.
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 →