ABB Error 34278 — Rectifier over temperature error

What it means · Ce que ça veut dire

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

In drive module arg , the temperature is too high for the rectifier unit at drive unit position arg . No operation will be possible until the fault is corrected. The system goes to Motors Off 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 Rectifier over temperature error, 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 : - 1 Cooling of the rectifier has failed .
• - 2 The rectifier is overloaded.
• Check cooling fans and channel.
• Surrounding temperature is too high.
• Check the DC bus usage.

Frequently asked · Questions fréquentes

What does ABB error 34278 mean?

ABB 34278 (“Rectifier over temperature error”): Rectifier over temperature error — ABB robot hardware event on the Rectifier over temperature error (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 34278?

Inspect the Rectifier over temperature error, 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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