ABB Error 34270 — AC input not symmetric warning

What it means · Ce que ça veut dire

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

In drive module arg , the input AC voltage is not symmetric between the Mains input phases for the rectifier unit at drive unit position arg . Operation will still be possible. 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 AC input not symmetric warning, 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 Main supply is not ok.
• Check incoming mains voltage.
• Be observant of other supply errors.

Frequently asked · Questions fréquentes

What does ABB error 34270 mean?

ABB 34270 (“AC input not symmetric warning”): AC input not symmetric warning — ABB robot hardware event on the AC input not symmetric warning (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 34270?

Inspect the AC input not symmetric warning, 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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