FANUC Alarm SRVO-007 — SERVO External emergency stops
Error- Hardware
- emergency stop and dual safety chains
- Controllers
- R-J3iB / R-30iA / R-30iB
- FANUC class
- SERVO
- Hardware family
- FANUC emergency stop, pendant and dual safety chain alarms
FANUC SRVO-007 (“SERVO External emergency stops”): On the terminal block TBOP4 of the panel board, no connection is made between 1 (EES1) and 2 (EES11) or between 3 (EES2) and 4 (EES21). First check: 1. If an external emergency stop switch is connected, release the switch and press RESET.
Updated 2026-10-22 · LogrobotLM reference
Description
On the terminal block TBOP4 of the panel board, no connection is made between 1 (EES1) and 2 (EES11) or between 3 (EES2) and 4 (EES21). If an external emergency stop switch is connected between 1 (EES1) and 2 (EES11) or between 3 (EES2) and 4 (EES21), the switch is pressed.
Remedy
1. If an external emergency stop switch is connected, release the switch and press RESET. 2. Check the switch and cable connected to 1 (EES1) and 2 (EES11) or 3 (EES2) and 4 (EES21). 3. When this signal is not used, make a connection between 1 (EES1) and 2 (EES11) or between 3 (EES2) and 4 (EES21).
Field diagnosis
The dual external emergency stop inputs EES1/EES11 and EES2/EES21 are open: a remote button is pressed or the jumper is missing.
What to check
- Re-arm the external device and reset.
- Otherwise check the contacts and cables connected to both EES channels of the emergency stop board; a single open channel gives a chain alarm.
- Note: After a cell modification, the first cause is an EES jumper that was removed and never put back.
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 →