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ABB Error 39415 — Power drive unit fault

Error

ABB 39415 (“Power drive unit fault”): Complete loss of communication with the axis drive unit (mains drive unit). Likely part: Power drive unit.

Updated 2026-10-22 · LogrobotLM reference

What it means

Complete loss of communication with the axis drive unit (mains drive unit).

What to check

  • Check the cabinet link ribbon cable and the grounding of the power cabinet.
  • Note: Similar to the S2/S3 power communication failures (sub-code 0109 or 0722).

Part to check / replace

ABB 39415 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

Same hardware involved

34408Power drive unit39416Power drive unit

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 →