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ABB Error 34201 — Drive Unit fault

Error

ABB 34201 (“Drive Unit fault”): A connected power unit is detected but is not configured. Likely part: Drive Unit (Drive Unit).

Updated 2026-10-22 · LogrobotLM reference

What it means

A connected power unit is detected but is not configured.

What to check

  • Check the drive module configuration and the position of the unit.
  • Check the wiring and the hardware identity before any software change.
  • Note: Hardware/configuration consistency error, useful for detecting a drive that is installed but missing from the configuration.

Part to check / replace

ABB 34201 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

34100Drive system fault34200Axis Computer / Drive Units fault34202Axis Computer / Drive Unit fault

Same hardware involved

34300Drive Unit39418Drive 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 →