ABB Error 20550 — Glitch test fault

What it means · Ce que ça veut dire

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

Status active when firmware on Process Interface Board (PIB) did not detect any glitch test pulse for 30 seconds. The system is in system halt state. 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 Glitch test fault, 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 other error messages for primary fault reason.
• Check for communication problems between PIB and Main Computer (MC).
• Save diagnostics for futher investigation.

Frequently asked · Questions fréquentes

What does ABB error 20550 mean?

ABB 20550 (“Glitch test fault”): Glitch test fault — ABB robot hardware event on the Glitch test fault (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 20550?

Inspect the Glitch test fault, 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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