ABB Error 594 — Shunt resistor fault
Error / Erreur🇫🇷 Résistance de Shunt
GÉNÉRATION S2 / S3 — CODES HISTORIQUES (5xx & SOUS-CODES)
ABB 594 (“Shunt resistor fault”): Shunt resistor fault — ABB robot hardware event on the shunt resistor (S2/S3). Likely part: Résistance de Shunt (shunt resistor).
Updated 2026-08-29 · LogrobotLM reference
What it means · Ce que ça veut dire
Shunt resistor fault — ABB robot hardware event on the shunt resistor (S2/S3). Seen across controller generations. Severity: Critical. Field diagnosis below (French); your robot's own manual remains authoritative.
Température excessive de la résistance shunt d'absorption de l'énergie de freinage.
What to check · Que vérifier
- Inspect the shunt resistor, 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 la tension d'entrée du redresseur.
- Réduire les accélérations du robot.
- À savoir : Deviendra l'erreur de surcharge de bleeder resistor (39444) ou de circuit ouvert de bleeder (34257) sur IRC5.
Part to check / replace · Pièce à contrôler / remplacer
ABB 594 points to the hardware below — start here before ordering. · 594 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 594 mean?
- ABB 594 (“Shunt resistor fault”): Shunt resistor fault — ABB robot hardware event on the shunt resistor (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 594?
- Inspect the shunt resistor, 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 594?
- 594 points to Résistance de Shunt (shunt resistor). 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 →