ABB Error 90537 — Missing Sync-request

What it means · Ce que ça veut dire

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

The synchronization switch is pressed without a synchronization request being sent to the Safety Controller. No synchronization will be done. 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 Missing Sync-request, 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.
• Send a synchronization request to the Safety Controller before pressing the sync-switch.

Frequently asked · Questions fréquentes

What does ABB error 90537 mean?

ABB 90537 (“Missing Sync-request”): Missing Sync-request — ABB robot hardware event on the Missing Sync-request (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 90537?

Inspect the Missing Sync-request, 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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