ABB Error 50401 — Startup synchronization failed

What it means · Ce que ça veut dire

Startup synchronization failed — ABB robot hardware event on the Startup synchronization failed (IRC5). Specific to this controller generation. Severity: Major. Field diagnosis below (French); your robot's own manual remains authoritative.

The system relay ' arg ' is defined but no response was received during the startup (waited for arg minutes). Le texte constructeur de ce code n'existe qu'en anglais dans les manuels ABB dont il provient. Il est reproduit tel quel ci-dessus ; le manuel de votre robot fait foi.

What to check · Que vérifier

• Inspect the Startup synchronization failed, its wiring and connections first.
• Match this code against your robot's event-log timeline before swapping parts.
• Follow the French field checks below — they are the tested sequence for this fault.
• Make sure that the 'Input signal' of the relay is configured and connected and startup all synchronized systems simultaneously.

Frequently asked · Questions fréquentes

What does ABB error 50401 mean?

ABB 50401 (“Startup synchronization failed”): Startup synchronization failed — ABB robot hardware event on the Startup synchronization failed (IRC5). Specific to this controller generation. Severity: Major. Field diagnosis below (French); your robot's own manual remains authoritative.

How do you troubleshoot ABB error 50401?

Inspect the Startup synchronization failed, its wiring and connections first. Match this code against your robot's event-log timeline before swapping parts. Follow the French field checks below — they are the tested sequence for this fault.

Related codes / Codes liés