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ABB Error 90628Signal type is unknown

Error / Erreur

🇫🇷 Signal type is unknown

ABB — CATALOGUE PRODUCTION

ABB 90628 (“Signal type is unknown”): Signal type is unknown — ABB robot hardware event on the Signal type is unknown (IRC5).

Updated 2026-08-29 · LogrobotLM reference

What it means · Ce que ça veut dire

Signal type is unknown — ABB robot hardware event on the Signal type is unknown (IRC5). Specific to this controller generation. Severity: Major. Field diagnosis below (French); your robot's own manual remains authoritative.

Signal arg type arg is unknown on line arg . The system will stop all robot movements. 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 Signal type is unknown, 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 safety configuration has not been created using RobotStudio.
  • Update the safety configuration.

Frequently asked · Questions fréquentes

What does ABB error 90628 mean?
ABB 90628 (“Signal type is unknown”): Signal type is unknown — ABB robot hardware event on the Signal type is unknown (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 90628?
Inspect the Signal type is unknown, 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.

Related codes / Codes liés

Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. · Informations indicatives issues du terrain — le manuel du constructeur et ses procédures de sécurité font foi. Ne shuntez jamais un organe de sécurité ; consignez (LOTO) avant toute intervention physique. How this reference is built →