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ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

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: April 2026

Related Faults

1Overcurrent10Input Phase Failure12Brake Chopper Supervision Fault
Source: Vacon NX Liquid-Cooled Drive
Open Manual (Page 151)Search more codes in this manual