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ABB Error 509 — Axis / resolver fault

Error

ABB 509 (“Axis / resolver fault”): This code comes in 7 variants (S2/S3). Likely part: DSQC 234 (measurement board).

Updated 2026-10-22 · LogrobotLM reference

What it means

This code comes in 7 variants (S2/S3). Main case: Error while synchronizing the geometric position of the robot.

What to check

  • Press the SYNC button on the control panel twice.
  • If persistent, locate the axis fault.
  • Note: Will become the general axis-not-synchronized error 20033 or 33503 on IRC5.

Part to check / replace

ABB 509 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

508Floppy disk drive fault510CPU / PROM fault511Memory DSMB 125 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 →