The intelligence of an AC charging station or an AC charging infrastructure is largely determined by the charge controller used. A smart charge controller has the primary task of controlling and monitoring the charging process of an electrical vehicle.
The features that characterise a smart charge controller include communication with a backend system and the associated authorisation of uasers, as well as the efficient distribution of load currents by means of dynamic load management to prevent an overload of the existing AC system.
ETEK Electric, according to the European standard IEC 61851-1, produced EV Charging Controller Control unit for charging electric vehicles, it can be used for charging almost all electric vehicles using both type 1 and type 2 plugs. The AC charging control unit is suitable for private and industrial applications and supports one charging point.
Description
The controller is a kind of product suitable for charging pile of electric vehicle.
(1) Software correction instructions, such as EKEPC1 or EKEPC2
(2) Maximum charging capacity indication 10A, 16A, 20A, 25A, 32A, Through the internal dial switch (The factory default setting is 32A)
(3) "C" for the cable version and "S" for the socket (without cable) version
(4) "C": with cable version" means that the charging cable is permanently connected to the controller; Pl/P2 terminal is connected to the AC contactor providing the charging load. The rated value of Curve B circuit breaker shall be selected within the maximum current range circuit breaker shall be selected within the maximum current range.
Technical Data
Scope of use
Control the communication of the electric vehicle AC charging process complies with IEC 61851 or SAEJ1772 standards.
Conform to DIN EN60715 installation requirements.
The output of the relay is used to connect the AC contactor that switches on/off the load.
The operating status of the EV interface is indicated by three-color LED lights.
The controller additional functions include: non-contact IC card connection module, DC leakage detection module (RCMU), RS485 communication interface equipment, plug lock device, external emergency stop button, etc.
Application cases
The following is a schematic diagram of an application case.
For example, item C with 1 pes type B circuit breaker and 1 pcs contactor, item A, B with 1pcs type A circuit breaker plus RCMU module and 1 contactor.
Controller charging procedure
After connected on the working voltage, the controller starts to initialize (self – detection procedure on the RCMU module) and conduct self – detection function (LED cycle flashing), waiting for the car to connect. The controller waits for the charging cable and the vehicle connection (status A), and the LED keeps flashing blue light, and this process requires about 6s waiting. If this controller connected the matched cable (status B), LED becomes stable blue light (and opens the electromagnetic lock switch).
After the charging plug linkage, and if the vehicle is in state C, the controller keeps the P1/P2 closed (charger connected), the LED becomes stable green, and the EV starts into charging mode. If the display status D( requires ventilation), because the controller does not have the heat dissipation function, the controller puts the P1/P2 on (charger off) simultaneously (close the electromagnetic lock switch), the head interlock fails and the controller turns off the charging program, the LED becomes stable red.
Terminal description of the controller
1. Connect "CP" directly to the interface of vehicle charging terminal.
2. Firstly connect the ground wire (PE line) of the vehicle charging terminal interface to the OV control point of the EPC controller, and then connect other lines in order. Do not use terminal blocks or EPC controller to connect the device from the outside at OV control point.
OV control point shall be consistent with the expected current of the factory. The connection of EPC Controller to OV is functional grounding, and the reliability of connection must be guaranteed, otherwise personal injury or property loss will be caused.
Relay output
We recommend connection with 230/400V 10kA curve B RCCB.
Cutting off the power branch
According to IEC61851, it is required to cut off the power branch when the charging process is completed within 100ms.
The EPC controller will stop the relay output after detecting that the power branch is cut off.
Replacement device
Touching any running parts will cause serious injury. Please cut off the power before operation. Process:
1. Cut off the line from the EPC controller terminal.
2. Pull the latch down from the back of the unit and rotate until it is free of the DIN rail and removed.
3. Installation: connect the rear lock clipper to the DIN rail and swing until the lock clipper was put in.
4. Reconnect the line (On).
5. Turn on the switch and the main power.
Warning There is no replaceable fuse inside EPC When replacing, make sure that the device and the components associated with the device are not energized.
Danger: Voltage hazard.
Cleaning off the unit is not allowed, EPC charging controller is maintenance free.
Controller connection status
Terminal function description
RS485 Communication description
Modbus-RTUmodel , Baud rate: 38400, fixed , address: 1-255default : 255（Broadcast address ）
Application circuit diagram
Easy installation
1: Install the controller (a) vertically onto the horizontal DIN rail (b)
2: Rotate the controller down until the clip into the Din
Overall dimension(mm)
