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ABB Error 34300 — Drive Unit fault

Error

ABB 34300 (“Drive Unit fault”): Unknown Drive Unit hardware type. Likely part: Drive Unit (Drive Unit).

Updated 2026-10-22 · LogrobotLM reference

What it means

Unknown Drive Unit hardware type.

What to check

  • Check that the installed drive type is supported by the RobotWare version and that it matches the expected hardware; replace the Drive Unit if necessary.
  • Note: Hardware identification error; particularly useful after replacing a drive.

Part to check / replace

ABB 34300 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 fault34201Drive Unit fault

Same hardware involved

39418Drive 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 →