EKEPC2-C/S EV Charging Controller
EKEPC2-C/S EV Charging Controller
EKEPC2-C/S EV Charging Controller

EKEPC2-C/S EV Charging Controller

Product Description

Naming rules

Brief description

  • 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. 

These functions must be Noted when ordering.

Function specification

Technical Data
Model Specification
Operating voltage
Output the PWM signal
Output control AC contactor
Passive contacts
Additional connection function (optional)
1.RCMU leakage monitoring mode(0-20mA/0-200mA) 2.Non-contact IC Card 3.DLB current balance mode 4.Current sensor access mode (DC+12V Output 0-5V) 5.With LCD display
Communication function (Optional) 1 way RS485 (Modebus-RTU)/RS232
Output auxiliary voltage
Ambient temperature -40℃ ~+50℃
Humidity ≤85%
IP degree
Cooling method Natural cooling
Installation method
DIN rail standard
Maximum charging capacity indication 10A, 16A,20A,25A,32A,Through the internal dial switch.

Controller connection status

No. State Code LED Color LED State PE、CP、PP state Controller state Remark
0 K Red 5Hz flashing Power self detect failed Fault--1# Power self-check failed!
Please turn the power back on!
1 A Blue 1Hz flashing CP disconnection Ready  
2 I Blue 2Hz flashing Waiting for lC card RFID Waiting  
3 B Blue Stabilization CP connect to diode+2.7kΩ Connected  
4 B Blue Stabilization CPconnect to diode+1.3kΩ Connected  
5 C Green Green brightening CP connect to diode+2.7kΩ parallel connect1.3kΩ Charging  
6 D Red Stabilization CP connect to diode+2.7kΩ parallel connect1.3kΩ parallel connect 270R
Or CP connect to diode+270R
Or CP connect to diode+270R parallel connect 2.7kΩ
Or CP connect to diode+270R parallel connect 1.3kΩ
Fault--2# Need Ventilation!
7 F Red 1Hz flashing CP line short circuit with PE line Fault--3# CP- PE short circuit!​​​​​ Please check the CP line
8 H Red 5Hz flashing RCMU occurs residual current or self detect failed Fault--4# RCMU leakage or self-inspection failure
9 E Red 2Hz flashing Diode short circuit ​​(Requirement waiting the CP disconnected) Fault--5# EV Charing Socket Fault
10 G Blue+Red 2Hz flashing PP line disconnection Fault--6# SPLIT PP wire,Please check the PP line
11 J Red+Green+Blue 2Hz flashing Electromagnetic Lock failed Fault--7# Electronic Lock Disabled
12 L Blue 5Hz flashing IC card failed Fault--8# RFID card is not valid
13 M Red+Green 1Hz flashing Circuit overload,DLB Mode activated Fault--9# Circuit overload, DLB Mode activated

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.

Function application

Terminal description of the controller

Terminal function description

1 L
Live line
Product working power supply:AC230V±10%50Hz
2 N
Neutral line
3 P1
Relay coil A1
AC contactor connected to the connection load of charging station
4 P2
Relay coil A2
5 FB
Reflect signal of the electromagnetic lock
This is the feeback signal on the electromagnetic lock directly to the passive contact output terminal of the electromagnetic lock
6 FB
7 LK+
Electromagnetic lock positive voltage

Provide positive and negative pulse voltage of electromagnetic lock,duty cycle of output pulse(1:3) and total pulse output maximum driving capacity of 500ms

8 LK-
Electromagnetic lock negative voltage
9 0V
External indicator light,DC5V/10mA drive capability
10 RED
11 GRE
Green LED
12 BLU
Blue LED
13 IC
IC card-controlled input signal
The signal of external non-contact IC card reading module,input is TTL voltage signal,DC 3.3V/5V
14 FLT
RCMU fault signal(DC3.3V/5V),output terminal
When the controller detects this end signal,means this line occur fault(including≥DC6mA leakage signal),the controller will cut off the charging power,untill this fault signal is solved,the controller will automatic resumes the charging state.
15 TST
RCMU test signal(DC3.3V/5V),the input terminal
The controller outputs the test signal before each charging,using to check that the working of the RCMU whether normal
16 +12V
+12V Power Supply
DC +12V/100mA Power output
17 CT1
Current transformer
When the controller requires DLB function,it requires connect to current transformer signal,the signal is:AC0-1.0V/0-50A.This function can dynamically balance the power load,adjust the output in time,control the charging current,and protect the safety of the power supply line.
18 CT2
19 PE
Power supply
Earth terminal
20 CP
Connect to the vehicle CP
Communication connection with electric vehicle,output PWM wave
21 PP
Charging cable current identification
When this end is a socket type charging station,it identify the current specification of charging cable
22 +5V
+5V Power Supply
Supply DC5V/100mA power output
23 A+
A+ for RS485 Communications
It can communicate with RS485 equipment.The communication standard conforms to Modbus-RTU slave mode.Baud
 rate:38400,N,8,1address number default:255(Broadcast address)See Table A for details
24 B-
B- for RS485 Communications

RS485 Communication description

Modbus-RTUmodel , Baud rate: 38400, fixed , address: 1-255default : 255(Broadcast address )

Register address number

Data description(power failure protection)

Read and write

Type of data



Device address number

Read and write

16-bit integer



DLB maximum starting current

Read and write 16-bit integer 9000

DLB maximum current(100.00A)

Read and write 16-bit integer 10000

Reference current:DLB/current transformation ratio(100.00A)

Read and write 16-bit integer 10000

Reference current calibration value input

Read and write 16-bit integer 1270

Charging pile current transformation ratio 50-200A

Read and write 16-bit integer  

Charging pile current value correction 0-100.0A

Read and write 16-bit integer  

Charging pile voltage value correction 0-500.0V

Read and write 16-bit integer  

Charging pile power value correction 0-22000W

Read and write 16-bit integer  

Maximum output PWM duty cycle of charging pile

Read and write 16-bit integer 90%

RCMU function selection 0 disabled 1 enabled,other values are selected by DIP switch

Read and write 16-bit integer 3

RFID function selection 0 disabled 1 enabled,other values are selected by DIP switch

Read and write 16-bit integer 3

Lock function selection 0 disabled 1 enabled, other values are selected by DIP switch

Read and write 16-bit integer 3

Cable function version selection 0 disable 1 enable,other values are selected by DIP switch

Read and write 16-bit integer 3

DLB function selection 0 disable 1 enable,other values are selected by DIP switch

Read and write 16-bit integer 3

PID control parameter P of DLB

Read and write 16-bit integer 100

PID control parameters of DLB I

Read and write 16-bit integer 1

DLB PID control parameter D

Read and write 16-bit integer 100

Controller ID number up to 9 digits

Read and write

32-bit integer



Read and write    

Software version

Read only

16-bit integer 1002

Current working status:Corresponding status 0-13

Read only 16-bit integer  

PWM value of cable specification

Read only 16-bit integer  

RCMU status 00 Not selected 01 Normal operation 02 Self-check failed 03 There is leakage in the charging circuit

Read only 16-bit integer  

RFID status 00 not selected 01 IC card not operating 02 IC card closed 03 IC card open

Read only 16-bit integer  

Lock status 00 not selected 01 locked 02 unlocked 03 fault

Read only 16-bit integer  

The current current,the decimal place is determined by the value of the referencecurrent

Read only 16-bit integer  

Current value of charging pile 0-200.0A

Read only 16-bit integer  

Current voltage value of charging pile 0-500.0V

Read only 16-bit integer  

Current power value of charging pile 0-22000W

Read only 16-bit integer  

Calibration value AD value of reference current

Read only 16-bit integer  

The PWM duty cycle corresponding to the current set by the rotary switch

Read only 16-bit integer  

Current output PWM duty cycle

Read only 16-bit integer  


Read only 16-bit integer  

Application circuit diagram


Easy installation Install the controller (a) vertically onto the horizontal DIN rail (b)
Rotate the controller down until the clip into the Din
Note: DIN rail accordance with German industrial standards
Overall dimension(mm)




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