56

Choke Overtemperature / PT100 Board Temperature Fault

Vacon · NX Liquid-Cooled Drive

What does 56 mean?

The temperature of the external input AC choke has exceeded 130°C (fault) or 110°C (warning), as measured by a PT100 thermistor, or the temperature limit values set for the PT100 board parameters have been exceeded. This indicates inadequate cooling for the choke or an issue with the PT100 measurement system.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Check the signal wiring from the PT100 thermistor to the control unit for integrity and correct connections.

  2. 4

    Review the temperature limit values configured for the PT100 board parameters to ensure they are appropriate.

Source: Vacon NX Liquid-Cooled Drive
Open Manual (Page 202)