Setting Maximum Current

This instruction applies to: Charge Controller Plug & Charge


EVs are flexible in the power they can consume. This power may not exceed the maximum rating of any component in the EVSE. Therefore the EVSE will communciate the maximum amperage for the EV to consume. The current, measured in amperes, can range between 6 and 80 amperes. The Maximum Current setting is a static maximum current value that has the highest priorty over any other external current setting. If the charge controller is capable of communicating dynamic current settings to the EV, this dynamic current setting will never exceed the maximum current setting. (Note that this is not applicable to the Plug & Charge module as the Plug & Charge does not support dynamic current settings.)

The maximum current setting on the Charge Controller prevents the EV from drawing more current that the system can provide. With system it is meant to be the total of all components making up the circuit to supply the EV: Grid connections, cables, fuses, RCD and contactor. The weakest component in this system determines the maximum current setting. The current setting can be set to a lower setting. Reasons can be that there is no need for the full power to be delivered or to accommodate more power for other circuits and by that protecting the main fuse.

  • Please note that the maximum current setting doesn’t come in place of fuses or other saftey measures. The EVSE must be properly protected against over current.


The maximum current setting needs to be set during the commisioning of the EVSE. It is not adviced that users will change this setting. If it appears that the fuses are blowing, the current setting should be set to a lower value.


The dip-switch to set the maximum current is located at the bottom side of the Charge Controller. It sits behind the terminals for CP, GND and PP.

It has four microswitches allowing a range of 15 current values to be set. The current values can be found in the table below. A screw driver can be used to push the switches down or lift them up. If all switches are down (pressed) the lowest current setting (6A) is applied. For every switch set to the up position, the current setting is increased. All switches in the up positions is not allowed and the Charge Controller will furiously flash it’s status LED.

The switches can be set while the Charge Controller is powered up but will only take into effect when the system is rebooted. This can be done by taking away the 12 Volt power or to press the button SW1 between the connectors.

Location of current and resetswitch in the charge controller
SW1, between the terminals, is the Reset button. Behind the terminals denoted as “PP GND CP”, SW2 is visible which is used for the current setting

The current setting can be checked. At startup of the Charge Controller, the status LED will flash to indicate the actual current setting. It does it by first showing a startup sequence: Red, Orange Green. Then it will flash red to indicate 10’s of Amps, orange to indicate 5 Amps and green to count the 1 amps. For example the current setting for 6 Amps after the startup sequence is orange – green (5 + 1). The current setting for 16 Ampere after the startup sequence is red-orange-green (10 + 5 + 1). The led sequence after the startup sequence for 24 Amp is red-red-green-green-green-green (10 + 10 + 1 + 1 + 1 + 1). In the table below, this is denoted as R2:G4.