LogrobotLM

LogrobotLM — AI fault diagnosis for ABB · KUKA · FANUC robots. It reads your robot backup in your browser (never uploaded) and pinpoints the fault. Try it free → · Le diagnostic IA qui lit la sauvegarde de votre robot, sans rien téléverser.

FANUC Alarm INTP-646 — PNSTROBE signal is input

FANUC INTP-646 (“PNSTROBE signal is input”): Because the maintenance DO is OFF, the fast fault recovery sequence cannot be executed. First check: Confirm the setup of fast fault recovery.

Updated 2026-08-29 · LogrobotLM reference

Description

Because the maintenance DO is OFF, the fast fault recovery sequence cannot be executed.

Remedy · Remède

Confirm the setup of fast fault recovery.

Frequently asked · Questions fréquentes

What does FANUC alarm INTP-646 mean?
FANUC INTP-646 (“PNSTROBE signal is input”): Because the maintenance DO is OFF, the fast fault recovery sequence cannot be executed.
How do you troubleshoot FANUC alarm INTP-646?
Confirm the setup of fast fault recovery.

Related codes / Codes liés

INTP-644RESUME/MAINT cannot be used hereINTP-645Instruction number is wrongINTP-647Maintenance DO is OFFINTP-648Please install J664

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 →