ABB Error 34406 — Drive unit power supply error

What it means · Ce que ça veut dire

Drive unit power supply error — ABB robot hardware event on the Drive unit power supply 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 drive unit with unit position arg has detected problem with the logic power. No operation will be possible until the fault is corrected. The system goes to Motors Off state with zero torque. 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 Drive unit power supply 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 : The 24V logic supply to the drive is temporary or constantly lost.
• Check the event log for power supply unit error messages.
• Check the cabling between the power supply unit and the drive unit.
• Check the 24V output from the power supply unit.

Frequently asked · Questions fréquentes

What does ABB error 34406 mean?

ABB 34406 (“Drive unit power supply error”): Drive unit power supply error — ABB robot hardware event on the Drive unit power supply 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 34406?

Inspect the Drive unit power supply 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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