2

Overvoltage

Vacon · NX All-in-One Application

What does 2 mean?

A hardware trip (S1) has detected the DC-link voltage exceeding its safe limits. This can be caused by a deceleration time that is too short, high voltage spikes on the input power supply, or a rapid Start/Stop sequence. Subcode S2 indicates issues with overvoltage control supervision.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Activate or verify the settings of the drive's internal overvoltage controller.

  2. 4

    Measure the input voltage at the drive's main power terminals to ensure it is within specified limits and stable.

Source: Vacon NX All-in-One Application
Open Manual (Page 371)