ABB Error 591 — Drive units fault
Error / Erreur🇫🇷 Variateurs
GÉNÉRATION S2 / S3 — CODES HISTORIQUES (5xx & SOUS-CODES)
ABB 591 (“Drive units fault”): Drive units fault — ABB robot hardware event on the Drive units (S2/S3). Likely part: Variateurs (Drive units).
Updated 2026-08-29 · LogrobotLM reference
What it means · Ce que ça veut dire
Drive units fault — ABB robot hardware event on the Drive units (S2/S3). Seen across controller generations. Severity: Critical. Field diagnosis below (French); your robot's own manual remains authoritative.
Erreur générale d'entraînement d'axes signalée sans cause de variateur précise.
What to check · Que vérifier
- Inspect the Drive units, 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.
- Réinitialiser le système complet.
- Vérifier la carte de contrôle et le rack variateurs.
- À savoir : Deviendra l'erreur globale de drive system (34100) sur IRC5.
Part to check / replace · Pièce à contrôler / remplacer
ABB 591 points to the hardware below — start here before ordering. · 591 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 591 mean?
- ABB 591 (“Drive units fault”): Drive units fault — ABB robot hardware event on the Drive units (S2/S3). Seen across controller generations. Severity: Critical. Field diagnosis below (French); your robot's own manual remains authoritative.
- How do you troubleshoot ABB error 591?
- Inspect the Drive units, 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 591?
- 591 points to Variateurs (Drive units). 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 →