ABB Error 591 — Drive units fault
ErrorABB 591 (“Drive units fault”): General axis drive error reported without a specific drive cause. Likely part: Drive units (Drive units).
Updated 2026-10-22 · LogrobotLM reference
What it means
General axis drive error reported without a specific drive cause.
What to check
- Reset the complete system.
- Check the control board and the drive rack.
- Note: Will become the global drive system error (34100) on IRC5.
Part to check / replace
ABB 591 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
Same hardware involved
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 →