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ABB Error 37052 — Power supply ordinateur main / Computer Unit fault

Error

ABB 37052 (“Power supply ordinateur main / Computer Unit fault”): A voltage measured on the main computer is out of tolerance. Likely part: Alimentation ordinateur principal / Computer Unit (power supply ordinateur main / Computer Unit).

Updated 2026-10-22 · LogrobotLM reference

What it means

A voltage measured on the main computer is out of tolerance. Documented case: 3.3 V measured for 3.0 V expected.

What to check

  • LOTO.
  • Check the Computer Unit power supplies, in particular the power supply board and the logic voltages.
  • Also check the loads/connectors and the battery condition; replace/repair the power supply if the voltage remains out of tolerance.
  • Note: S4C+ logic power supply fault; to be distinguished from a simple battery warning.

Part to check / replace

ABB 37052 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

20252Motor / Thermal sensor / Temperature cable fault20253External device temperature high DRV137001Motor ON contactor activation error

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 →