ABB Error 39478 — Controller hardware fault
Error / Erreur🇫🇷 Moteur électrique robot
VARIATEURS & COMMUNICATION DRIVE (39xxx, 3254x)
ABB 39478 (“Controller hardware fault”): Controller hardware fault — ABB robot hardware event on the controller hardware (IRC5/Omnicore). Likely part: Moteur électrique robot (Moteur électrique robot).
Updated 2026-08-29 · LogrobotLM reference
What it means · Ce que ça veut dire
Controller hardware fault — ABB robot hardware event on the controller hardware (IRC5/Omnicore). Seen across controller generations. Severity: Critical. Field diagnosis below (French); your robot's own manual remains authoritative.
Température excessive mesurée via la sonde PTC d'un moteur d'axe du robot (surcharge).
What to check · Que vérifier
- 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.
- Vérifier l'absence d'obstacle ou de collision d'axe robot.
- Laisser refroidir le robot.
- À savoir : Similaire aux surchauffes moteurs d'anciennes armoires.
Part to check / replace · Pièce à contrôler / remplacer
ABB 39478 points to the hardware below — start here before ordering. · 39478 met en cause l'organe ci-dessous : commencez par là.
Tap a part for every code that points to it — and verify the exact variant for your controller before ordering. · Touchez une pièce pour tous les codes qui la citent ; vérifiez la variante exacte avant commande.
Frequently asked · Questions fréquentes
- What does ABB error 39478 mean?
- ABB 39478 (“Controller hardware fault”): Controller hardware fault — ABB robot hardware event on the controller hardware (IRC5/Omnicore). Seen across controller generations. Severity: Critical. Field diagnosis below (French); your robot's own manual remains authoritative.
- How do you troubleshoot ABB error 39478?
- 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. Vérifier l'absence d'obstacle ou de collision d'axe robot.
- Which part is involved in ABB 39478?
- 39478 points to Moteur électrique robot (Moteur électrique robot). Confirm the real cause against the robot backup before replacing a part.
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 →