ABB Error 20505 — Emergency stop cat. 1 active

What it means · Ce que ça veut dire

Emergency stop cat. 1 active — ABB robot hardware event on the Emergency stop cat. 1 active (IRC5). Specific to this controller generation. Severity: Major. Field diagnosis below (French); your robot's own manual remains authoritative.

An external Emergency stop category 1 (Delayed stop), connected to SCB, has been activated. System is in Emergency Stop category 1 status. 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 Emergency stop cat. 1 active, 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.
• To resume operation, release the external source for Delayed stop and acknowledge.
• Check the HMI diagnostic view if the system is not able to start.
• Check wiring and connections for the current setup.

Frequently asked · Questions fréquentes

What does ABB error 20505 mean?

ABB 20505 (“Emergency stop cat. 1 active”): Emergency stop cat. 1 active — ABB robot hardware event on the Emergency stop cat. 1 active (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 20505?

Inspect the Emergency stop cat. 1 active, 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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