ABB Error 593 — Rectifier fault
ErrorABB 593 (“Rectifier fault”): Thermal overload of the rectifier power board. Likely part: Rectifier (Rectifier).
Updated 2026-10-22 · LogrobotLM reference
What it means
Thermal overload of the rectifier power board.
What to check
- Check the ambient temperature of the cabinet.
- Reduce the duty cycle.
- Clean the grilles.
- Note: Equivalent to the high rectifier temperature error (39476, 39010) of the S4/IRC5 axis cabinet.
Part to check / replace
ABB 593 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 →