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FANUC Alarm SRVO-260 — SERVO Chain 1 (NTED) abnormal

FANUC SRVO-260 (“SERVO Chain 1 (NTED) abnormal”): A Single chain 2 (0V) failure occurred when the Non Teacher Enabling Device was released. First check: 1. Repair the chain 2 (0V) circuit on the Non Teacher Enabling Device hardware.

Updated 2026-09-17 · LogrobotLM reference

Description

A Single chain 2 (0V) failure occurred when the Non Teacher Enabling Device was released.

Remedy

1. Repair the chain 2 (0V) circuit on the Non Teacher Enabling Device hardware. 2. Set the CHAIN FAILURE detection item to TRUE on the SYSTEM/CONFIG screen and press the RESET button on the teach pendant.

Related codes

SRVO-255E-STOP circuit abnormal (KM2)SRVO-256MCC control circuit abnormal (AMP)SRVO-261SERVO Chain 2 (NTED) abnormalSRVO-262SERVO Chain 1 (SVDISC) abnormal

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 →