ABB Error 34300 — Drive Unit fault
Error / Erreur🇫🇷 Drive Unit
ENTRAÎNEMENT : REDRESSEUR, DC-LINK, BLEEDER, ENERGY BANK (34xxx, 36xxx, 386xx S4C+)
ABB 34300 (“Drive Unit fault”): Drive Unit fault — ABB robot hardware event on the Drive Unit (IRC5). Likely part: Drive Unit (Drive Unit).
Updated 2026-08-29 · LogrobotLM reference
What it means · Ce que ça veut dire
Drive Unit fault — ABB robot hardware event on the Drive Unit (IRC5). Seen across controller generations. Severity: Major. Field diagnosis below (French); your robot's own manual remains authoritative.
Type matériel de Drive Unit inconnu.
What to check · Que vérifier
- Inspect the Drive Unit, 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.
- Vérifier que le type de drive installé est supporté par la version RobotWare et qu’il correspond au matériel attendu; remplacer la Drive Unit si nécessaire.
- À savoir : Erreur d’identification matérielle; particulièrement utile après remplacement d’un drive.
Part to check / replace · Pièce à contrôler / remplacer
ABB 34300 points to the hardware below — start here before ordering. · 34300 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 34300 mean?
- ABB 34300 (“Drive Unit fault”): Drive Unit fault — ABB robot hardware event on the Drive Unit (IRC5). Seen across controller generations. Severity: Major. Field diagnosis below (French); your robot's own manual remains authoritative.
- How do you troubleshoot ABB error 34300?
- Inspect the Drive Unit, 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.
- Which part is involved in ABB 34300?
- 34300 points to Drive Unit (Drive Unit). Confirm the real cause against the robot backup before replacing a part.
Related codes / Codes liés
Same hardware involved / Même matériel en cause
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 →