Battery Contactor does not close

The main reason for the battery contactor not closing is that the BMS system is not yet in configured. The configuration explanation can be found at the FAQ “BMS – no cell communication” – BMS error – No Cell Communication – EV Europe

If the configuration is properly completed, the following checks can be performed.

    • Does the BMS circuit board have power supply? both green LEDS should be on, if only 1 LED is on, probably the fuse on the circuit board is faulty.
    • Is the emergency stop not operated? This connection between IL1-1 and IL1-2 should be measured through.
    • Is the interlock circuit IL2-1 and IL2-2 connected according to the diagram and connects through?
    • Is the service disconnect plug present?
    • Is there +12V on the IGN/KSI signal (+48V for the 48V variant of the terminal board)

Also watch our video for instuctions: