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
Reset the fault using the Reset button on the control keypad or via the I/O terminal.
- 2
Attempt to restart the drive. If the fault re-occurs, further investigation into internal component failure or control logic is warranted.
Verified technical data. Last updated: March 2026
Related Faults
Source: Vacon NX Liquid-Cooled Drive