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ABB Error 90202 — Emergency stop open

Error

ABB 90202 (“Emergency stop open”): Emergency stop open: the emergency stop circuit has been broken and, while it was broken, an attempt to operate was made. Likely part: Chaîne d'arrêt d'urgence (emergency-stop chain).

Updated 2026-10-22 · LogrobotLM reference

What it means

Emergency stop open: the emergency stop circuit has been broken and, while it was broken, an attempt to operate was made. The system remains in the Emergency Stop state.

What to check

  • Reset the emergency stop at its source (button, gate), then acknowledge with Motors ON.
  • If the state persists after reset, check the two channels of the ES circuit and their wiring on the Panel Board.
  • Note: Difference from 20223: here BOTH channels are open (clear-cut stop); 20223 reports a discrepancy between channels (contact fault).

Part to check / replace

ABB 90202 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

90200Limit switch opened by SC90201Limit switch open90203Enabling device (FlexPendant) fault

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 →