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FANUC Alarm SRVO-281 — SYSTEM SVOFF input(SVEMG abnormal)

FANUC SRVO-281 (“SYSTEM SVOFF input(SVEMG abnormal)”): Single chain 1 (+24V) failure occured when SVOFF input (Servo OFF signal) is asserted. First check: Repair the circuit of chain 1 (+24V) on SVOFF hardware Set CHAIN FAILURE detection to TRUE on SYSTEM/CONFIG screen And push reset button on Teach pendant

Updated 2026-09-17 · LogrobotLM reference

Description

Single chain 1 (+24V) failure occured when SVOFF input (Servo OFF signal) is asserted.

Remedy

Repair the circuit of chain 1 (+24V) on SVOFF hardware Set CHAIN FAILURE detection to TRUE on SYSTEM/CONFIG screen And push reset button on Teach pendant

Related codes

SRVO-279SYSTEM Circuit abnormal 3SRVO-280SVOFF inputSRVO-282SERVO Chain 1 (SVOFF) abnormalSRVO-283Chain 2 (SVOFF) 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 →