FANUC Alarm SRVO-261 — SERVO Chain 2 (NTED) abnormal
FANUC SRVO-261 (“SERVO Chain 2 (NTED) abnormal”): A single chain 1 (+24V) failure occurred when the servo disconnected signal was asserted. First check: 1. Repair the chain 1 (+24V) circuit on the Servo disconnect signal circuit.
Updated 2026-08-29 · LogrobotLM reference
Description
A single chain 1 (+24V) failure occurred when the servo disconnected signal was asserted.
Remedy · Remède
1. Repair the chain 1 (+24V) circuit on the Servo disconnect signal circuit. 2. Set the CHAIN FAILURE detection to TRUE on the SYSTEM/CONFIG screen and press RESET on the teach pendant.
Frequently asked · Questions fréquentes
- What does FANUC alarm SRVO-261 mean?
- FANUC SRVO-261 (“SERVO Chain 2 (NTED) abnormal”): A single chain 1 (+24V) failure occurred when the servo disconnected signal was asserted.
- How do you troubleshoot FANUC alarm SRVO-261?
- 1. Repair the chain 1 (+24V) circuit on the Servo disconnect signal circuit. 2. Set the CHAIN FAILURE detection to TRUE on the SYSTEM/CONFIG screen and press RESET on the teach pendant.
Related codes / Codes liés
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. · Informations indicatives issues du terrain — le manuel du constructeur et ses procédures de sécurité font foi. Ne shuntez jamais un organe de sécurité ; consignez (LOTO) avant toute intervention physique. How this reference is built →