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ABB Error 20223 — Emergency stop conflict

Error

ABB 20223 (“Emergency stop conflict”): Emergency stop conflict: only one of the two channels of the emergency stop chain has opened. Likely part: DSQC 125 (relay / safety board) +1 more.

Updated 2026-10-22 · LogrobotLM reference

What it means

Emergency stop conflict: only one of the two channels of the emergency stop chain has opened. The system detects a discrepancy between the two redundant channels.

What to check

  • Check the cables and connections of the ES chain.
  • Read the other log messages that occurred at the same moment to identify the faulty contact.
  • Test each ES switch.
  • Replace the faulty contact or unit.
  • Note: Modern equivalent of the DSQC 125/126 relay board faults of the S2/S3 racks. On OmniCore, reported via the Safety Controller (9xxxx).

Part to check / replace

ABB 20223 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

20206General stop open20313IOC EN supervision fault20314AXC EN supervision 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 →