ABB Error 90473 — SC arg Dual Computer mismatch

What it means · Ce que ça veut dire

SC arg Dual Computer mismatch — ABB robot hardware event on the SC arg Dual Computer mismatch (IRC5). Specific to this controller generation. Severity: Major. Field diagnosis below (French); your robot's own manual remains authoritative.

Safety Controller (SC) arg have had conflicting values for a Safety Output for too long. The Safety Controller has entered a Safe State and issue an error after 10 minutes of internal mismatch, if recommended actions are not performed. 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 SC arg Dual Computer mismatch, 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.
• probable : - The mechanical unit have been parked at a position on, or close to, a supervised or monitored function limit for too long time.
• - Internal computation error in Safety Controller.
• Move all mechanical units' axes and tools well inside or outside monitored and supervised function limits.

Frequently asked · Questions fréquentes

What does ABB error 90473 mean?

ABB 90473 (“SC arg Dual Computer mismatch”): SC arg Dual Computer mismatch — ABB robot hardware event on the SC arg Dual Computer mismatch (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 90473?

Inspect the SC arg Dual Computer mismatch, 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.

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