31

IGBT Over-temperature (Hardware)

Vacon · NX All-in-One Application

What does 31 mean?

The IGBT Inverter Bridge's over-temperature protection has activated, indicating excessively high short-term overload current. This typically points to the motor drawing too much current, potentially due to incorrect sizing or heavy load conditions, causing the inverter's power semiconductors to overheat.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Perform an identification run to optimize motor parameters and drive control.

Source: Vacon NX All-in-One Application
Open Manual (Page 374)