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ABB Error 39428 — Rectifier startup error

Error

ABB 39428 (“Rectifier startup error”): Rectifier startup error: the rectifier on the drive module communication link has detected an error at start-up. Likely part: Redresseur / Séquence de démarrage (Redresseur / Séquence de démarrage).

Updated 2026-10-22 · LogrobotLM reference

What it means

Rectifier startup error: the rectifier on the drive module communication link has detected an error at start-up. Probable cause: an internal error in the rectifier unit. The system goes to SYS HALT.

What to check

  • Check that the signal cable is correctly connected between the rectifier and the drive unit.
  • Perform a shutdown and then restart the cabinet — a simple acknowledgement does not replay the start-up sequence.
  • If the fault recurs, isolate the faulty rectifier unit and replace it.
  • Note: Error that only appears at power-up: no point looking for it during operation. Complements 39426 / 39427.

Part to check / replace

ABB 39428 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

32540Drive unit / firmware fault32541Drive unit / firmware fault39008Drive units 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 →