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LogrobotLM — AI fault diagnosis for ABB · KUKA · FANUC robots. It reads your robot backup in your browser (never uploaded) and pinpoints the fault. Try it free → · Le diagnostic IA qui lit la sauvegarde de votre robot, sans rien téléverser.

ABB Error 111873 — RAM/WDU battery fault

Error / Erreur

🇫🇷 Batterie RAM WDU

PROCESS : SOUDAGE WDU (11xxxx) & PEINTURE CBS (13xxxx)

ABB 111873 (“RAM/WDU battery fault”): RAM/WDU battery fault — ABB robot hardware event on the RAM/WDU battery (WDU (Soudage)). Likely part: Batterie RAM WDU (RAM/WDU battery).

Updated 2026-08-29 · LogrobotLM reference

What it means · Ce que ça veut dire

RAM/WDU battery fault — ABB robot hardware event on the RAM/WDU battery (WDU (Soudage)). Seen across controller generations. Severity: Major. Field diagnosis below (French); your robot's own manual remains authoritative.

Perte de tension de la batterie de sauvegarde de l'armoire de données de soudure WDU.

What to check · Que vérifier

  • Inspect the RAM/WDU battery, 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 l'état de la batterie et remplacer le module pile pour ne pas perdre les programmes.
  • À savoir : Équivalent aux pannes de piles de sauvegardes logiques d'axes.

Part to check / replace · Pièce à contrôler / remplacer

ABB 111873 points to the hardware below — start here before ordering. · 111873 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 111873 mean?
ABB 111873 (“RAM/WDU battery fault”): RAM/WDU battery fault — ABB robot hardware event on the RAM/WDU battery (WDU (Soudage)). Seen across controller generations. Severity: Major. Field diagnosis below (French); your robot's own manual remains authoritative.
How do you troubleshoot ABB error 111873?
Inspect the RAM/WDU battery, 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 111873?
111873 points to Batterie RAM WDU (RAM/WDU battery). Confirm the real cause against the robot backup before replacing a part.

Related codes / Codes liés

110704Battery Weldtimer fault110711Cable Capteur fault110712Power cables fault

Same hardware involved / Même matériel en cause

112428Batterie RAM WDU

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 →