ABB Error 50022 — Too low DC-link voltage

What it means · Ce que ça veut dire

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

The drive units cannot detect the dc link voltage, or the voltage is too low. This can occur if the DC link bus bar is not correctly inserted or if the mains contactors do not close properly. 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 Too low DC-link voltage, 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.
• Check the DC bus bar is correctly inserted between the drive unit and the rectifier.
• Check that the motors on contactors are closed and that there is voltage on the side connected to the rectifier.

Frequently asked · Questions fréquentes

What does ABB error 50022 mean?

ABB 50022 (“Too low DC-link voltage”): Too low DC-link voltage — ABB robot hardware event on the Too low DC-link voltage (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 50022?

Inspect the Too low DC-link voltage, 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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