ABB Error 39506 — DC bus status not ok

What it means · Ce que ça veut dire

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

The DC bus off one or more drive units connected to drive module arg has been unexpectedly switched off. System goes to status SYS HALT. 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 DC bus status 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.
• probable : This may be due to bad cables or internal errors in the drive unit.
• Check all cables connected to the drive unit.
• Restart the controller.
• Replace the drive unit if faulty.

Frequently asked · Questions fréquentes

What does ABB error 39506 mean?

ABB 39506 (“DC bus status not ok”): DC bus status not ok — ABB robot hardware event on the DC bus status 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 39506?

Inspect the DC bus status 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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