ABB Error 90866 — Not allowed Command

What it means · Ce que ça veut dire

Not allowed Command — ABB robot hardware event on the Not allowed Command (IRC5). Specific to this controller generation. Severity: Major. Field diagnosis below (French); your robot's own manual remains authoritative.

An attempt to go to Motors on in Manual mode when Safety supervision is active was rejected. The system goes to Guard stop 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 Not allowed Command, 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.
• Use the Enabling device.

Frequently asked · Questions fréquentes

What does ABB error 90866 mean?

ABB 90866 (“Not allowed Command”): Not allowed Command — ABB robot hardware event on the Not allowed Command (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 90866?

Inspect the Not allowed Command, 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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