ABB Error 111873 — WDU RAM battery fault
ErrorABB 111873 (“WDU RAM battery fault”): Loss of voltage of the backup battery of the WDU weld data cabinet. Likely part: WDU RAM battery (WDU RAM battery).
Updated 2026-10-22 · LogrobotLM reference
What it means
Loss of voltage of the backup battery of the WDU weld data cabinet.
What to check
- Check the battery condition and replace the battery module so as not to lose the programs.
- Note: Equivalent to axis logic backup battery failures.
Part to check / replace
ABB 111873 points to the hardware below — start here before ordering.
Tap a part for every code that points to it — and verify the exact variant for your controller before ordering.
Related codes
Same hardware involved
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. How this reference is built →