5

Charging Switch Open

Vacon · NX Liquid-Cooled Drive

What does 5 mean?

The charging switch is detected as open despite a START command being issued to the drive. This indicates either a malfunction in the charging switch control mechanism or a failure of the component itself.

Common Causes

  • Charging contactor failing to close when commanded.
  • Loss of control signal to the charging relay.
  • Mechanical obstruction preventing contactor closure.
  • Overload on the charging circuit.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Reset the fault using the Reset button on the control keypad or via the I/O terminal.

  2. 2

    Attempt to restart the drive. If the fault re-occurs, further investigation into internal component failure or control logic is warranted.

Browse all codes in this manual (52)
Verified technical data. Last updated: March 2026

Related Faults

Source: Vacon NX Liquid-Cooled Drive