ABB Error 90201 — Limit switch open
ErrorABB 90201 (“Limit switch open”): Limit switch open: the robot limit switch has opened — the robot has been driven outside the working range defined by the limit switches mounted on the axis. Likely part: Fin de course / Limites de zone de travail (Fin de course / Limites de zone de travail).
Updated 2026-10-22 · LogrobotLM reference
What it means
Limit switch open: the robot limit switch has opened — the robot has been driven outside the working range defined by the limit switches mounted on the axis. The system goes to Motors OFF.
What to check
- Bring the axis back into range by jogging with the limit switch override device (manufacturer's procedure).
- Check the mechanical adjustment of the limit switch cams.
- Check the circuit wiring if the opening does not correspond to an actual out-of-range position.
- Note: "Physical" version of 90200 (opened by the Safety Controller). Limit switches optional depending on the model: mainly present on axes 1-3 of heavy-payload robots.
Part to check / replace
ABB 90201 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
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 →