ABB Error 90502 — Safety Controller SMB Communication Failure
Error / Erreur🇫🇷 Safety Controller SMB Communication Failure
ABB — CATALOGUE PRODUCTION
ABB 90502 (“Safety Controller SMB Communication Failure”): Safety Controller SMB Communication Failure — ABB robot hardware event on the Safety Controller SMB Communication Failure (IRC5).
Updated 2026-08-29 · LogrobotLM reference
What it means · Ce que ça veut dire
Safety Controller SMB Communication Failure — ABB robot hardware event on the Safety Controller SMB Communication Failure (IRC5). Specific to this controller generation. Severity: Major. Field diagnosis below (French); your robot's own manual remains authoritative.
The safety controller for drive module arg failed to communicate with the serial measurement board (SMB). The safety controller 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 Safety Controller SMB Communication Failure, 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 : - Errors in the configuration of external axes.
- - Disturbances in the communication links between the SMB, the robot controller, and the safety controller.
- - Check the configuration of external axes.
- - Check the cabling from the axis computer to the main computer for possible disturbances.
Frequently asked · Questions fréquentes
- What does ABB error 90502 mean?
- ABB 90502 (“Safety Controller SMB Communication Failure”): Safety Controller SMB Communication Failure — ABB robot hardware event on the Safety Controller SMB Communication Failure (IRC5). Specific to this controller generation. Severity: Major. Field diagnosis below (French); your robot's own manual remains…
- How do you troubleshoot ABB error 90502?
- Inspect the Safety Controller SMB Communication Failure, 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 →