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ABB Error 20030 — Axis not commutated

Warning

ABB 20030 (“Axis not commutated”): An axis lacks valid commutation data — typically after motor/drive replacement or measurement system loss.

Updated 2026-09-17 · LogrobotLM reference

What it means

An axis lacks valid commutation data — typically after motor/drive replacement or measurement system loss. The axis cannot run until commutation is restored.

What to check

  • Follow the manufacturer commutation procedure for the axis after motor/resolver work.
  • If it appears without hardware work: suspect the measurement chain (SMB, battery, cabling).

Related codes

20032Revolution counter not updated38101SMB communication failure

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 →