ABB Error 20555 — ACA SW module not OK

What it means · Ce que ça veut dire

ACA SW module not OK — ABB robot hardware event on the ACA SW module not OK (IRC5). Specific to this controller generation. Severity: Major. Field diagnosis below (French); your robot's own manual remains authoritative.

Status active when ACA software module is not OK, or communication with AMA is down. 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 ACA SW module not OK, 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.
• Check that the ACA SW is running.
• Check the communication towards AMA.
• Check that the AMA SW is running.

Frequently asked · Questions fréquentes

What does ABB error 20555 mean?

ABB 20555 (“ACA SW module not OK”): ACA SW module not OK — ABB robot hardware event on the ACA SW module not OK (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 20555?

Inspect the ACA SW module not OK, 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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