ABB Error 20474 — SC arg I/O Supply

What it means · Ce que ça veut dire

SC arg I/O Supply — ABB robot hardware event on the SC arg I/O Supply (IRC5). Specific to this controller generation. Severity: Major. Field diagnosis below (French); your robot's own manual remains authoritative.

I/O supply voltage level for Safety Controller (SC) arg is out of range. 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 SC arg I/O Supply, 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 : Either the voltage is out of specification or the voltage is missing.
• Connect 24V supply with right voltage level to I/O supply terminals.
• Warm start controller.

Frequently asked · Questions fréquentes

What does ABB error 20474 mean?

ABB 20474 (“SC arg I/O Supply”): SC arg I/O Supply — ABB robot hardware event on the SC arg I/O Supply (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 20474?

Inspect the SC arg I/O Supply, 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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