Operation Manual
1 Summary
1.1 Prologue
Dear customers ，Thank you for using our portable DC charger products (referred to as chargers) ，We sincerely hope that this product can meet your requirements and put forward more valuable opinions on the performance and functions of the product at the same time.We
will continue to improve and enhance product quality continuously .
1.2 Features
. Intelligent Management ： Realize human-computer interaction 、 Battery pack and charging status monitoring, automatic charging and manual charging mode settings 、Security
protection, charging control management, communication and other functions.
. Safe and Reliable ：Reliable safety protection ，The whole machine runs stably and reliably with the functions of moisture proof, mildew proof, salt spray proof, dust proof and
waterproof etc.
. Voice Navigation：Good human-computer interaction experience, easy operation。
. Expansion compatible：Perfect scalability ，Good compatibility
. Beautiful appearance: beautiful appearance design.
. Design specifications: comply with national, industry or corporate standards.
2 Safety Notice
This manual includes two safety instructions：Warning and attention 。It will warn when it may cause serious personal injury or death and damage to the equipment, then give measures to avoid unnecessary injury.If don’t operate as required, it may cause moderate or minor damage to people or machines.And use caution when introducing information on a
certain topic.
2 / 17
3 Appearance And Composition
3.1 Dimension
Dimension:368*516* 152mm (W*H*T)（(Without Connector, foot pad, handle
3.2 Dimension And Appearance
1、Product Dimension Drawing
Wall fix plate
Figure 1 Product Dimension Drawing
2、Product Appearance（Productpatent
has
been
registered）
3.3 Product Composition
Function Introduction of Charger Pane
Note:There is no indicator light and fault light on the display screen version, while the swipe and scan version has the both
| DC charging cable |
4 / 17
4 Working environment and Temperature
4.1 Working environment
u Temperature：-40℃~+85℃;
u Humidity：5％～95％，No condensation；
u Pressure：79～106 kPa；
u Altitude ：≤2000 m
u Cooling method: air cooling
The working environment must meet the parameter requirements in this manual, otherwise it will affect the function and service life of the product。
4.2 Function Parameters
| Item | Specifications |
| Model | DC20750 |
| Input Voltage Range(DC) | 260-820V， |
| Max Input Current | 40A |
| Output Power | (700V-820V ）20KW （700V-260V）5KW |
| Output Voltage | 150-1000V |
| Output Current | 0-40A |
| Navigation | Voice navigation throughout the operation, fault prompt |
| Optional Function | Credit card/scan/4G module (support We Chat/Alipay ) |
| Display Function | 4.3 inch true color capacitive touch screen |
| Charger Cable Length | 3M（ can be customized） |
| Efficiency | Fully loaded state≥95% |
| Auxiliary Power | 12V/24V Optional |
| Working temperature | -40~85℃ , 25℃（TYPE） ；Intelligent derate if the case |
| Protection Level | IP54 |
| Dimension(mm) | Wall Hanging:516 *152*368 |
| Weight（ KG） | 32KG |
5
Output
voltage versus current curve
6 Operating instruction
1.1 User instructions
1:Insert the connector into the EV inlet.
2: Select the corresponding connector.
connector 1: Unfired
connector 2: Charging
connector 3: Inserted
3: Waiting For Charge Card.
7 / 17
4: System Automation and Automobile Communication with the car and starts charging.
5: Real-time Charging Information.
When the car battery is full, stop charging automatically or stop charging manually by “Stop”.
8 / 17
The bill is displayed at the end of the order. Plug the charging gun back into the side socket of the device.
1.2 Administrator Operational Instructions
1：Click more – > Settings to open the login settings page
9 / 17
2:Enter password 123456 to enter settings page
10 / 17
3：Settings page
1：General Information
Basic Information Settings
2：Device Information
Basic equipment information related to OCPP networking
3：Configuration Key
Settings related to OCPP networking
4： Charging Records
Charging Recording Information
5：Firmware Information
Software upgrade information related to OCPP networking
1：Language:
Select System Language, default to English
2：Charging Station Management System
setting up OCPP protocol and networking with cloud servers
3：Total DC power module
Change the number of power modules
4：Reserved power module per connector
Set the number of exclusive power modules for each charging gun 5：Dynamic Used Power Modules
Display the number of power modules currently used for charging 6：Android Virtual Keys
Display or hide the return key 7：Fan Cooling Duration
Prohibition of amendment 8 Use Precautions
1,Make sure that the power incoming line is wired in accordance with the three-phase
five-wire system before powering on the system, and do not connect it wrongly；
2,It is strictly forbidden to plug and unplug the charging gun in the charging state；
3 It is strictly prohibited to conduct outdoor charging operations in rainy days。
9 Routine Maintenance
The internal components of the charger will age and wear due to the influence of ambient
temperature, humidity, dust and vibration,which will lead to potential failures of the charger.
Notice
Only qualified electrical engineers are allowed to do the following described work 。Do not leave screws, washers and other metal parts in the charger during maintenance otherwise the equipment may be damaged！
When you need to perform hardware maintenance operations on the charger, please do
the following work：
u turn off the charger, turn off the AC input power distribution, and ensure that the parts that
need to be touched are without electric；
u Cut off the voltage of all auxiliary circuits；
u After the remaining electric energy stored in the internal charging module is
discharged (after the power is off, let it stand for more than 10 minutes)；
u Open the cabinet door and measure the voltage of the input terminal and the
intermediate circuit terminal to ensure that there is no dangerous voltage。
. The recommended routine maintenance cycle and work content are shown in Table1
| Check content | Inspection Method | Maintenance cycle |
| SystemOperatingstatusAndenvironment | 1.Observe whether the charger components, wiring, and device structure are damaged or deformed；2.Listen whether the charger is running abnormally；3.Check whether the touch screen data display is normal； 4.Check whether the switch, connector, circuit breaker, fanare normal；5.Check whether the charger shell heats up normally,Use thermal imaging cameras to monitor system heating condition；6.Observe whether the wind in and out is normal； 7.Check the humidity and dust around the charger。Note ！ The ventilation of the air intake must be checked 。If the module cannot be effectively cooled, it will produce malfunction due to overheating。 | half-year |
| Systemcleaning | 1.Check the cleanliness of circuit boards and components；2.Check the internal charging module temperature and dust.Take out the module if necessary and clean the module。 | Per half-year to one year （Depends on the dust content of the use environment |
| Power Circuit connection | 1.Check whether the power cable and control cable are damaged，Especially if there are cut marks on the skin in contact with the metal surface；2.Check whether the Insulation bandaging of the power cable terminal has fallen off。 | Half-year after the first debugging, Every six months Once a year later |
| Cooling airMachinemaintenanceAndreplacement | 1.Check Whether the fan blade has cracks；2.Listen if there is abnormal vibration when the fan is running；3.Replaced in time if the fan is abnormal,。 | Once a year |
| Breakermaintain | 1.Routine inspection for the corrosion of all metal components (every six months)；2.The annual inspection of the connector ensures that it runs well。 | Half-year to once a year |
13 / 17
| Securityfunction | 1.Check the emergency stop button and stop button function；2.Simulated shutdown。 | Half-year to once a year |
10 Fault Handle
Table 2 Common faults and treatment of chargers
| Fault | Treatment |
| 1.Cannot communicate with the vehicle BMS during charging | Check whether the communication cable is damaged, replace the damaged cable |
| Check whether the charging port is connected reliably,Reconnect to ensure reliable connection | |
| Check whether the CAN bus is blocked, power off and restart | |
| Check whether the charger controller or BMS has fault，Replace if it fails | |
| 2.Over Temperature | Check whether the system is overloaded |
| Check if the cooling system is working properly | |
| Shut it down immediately and notify the technician for maintenance If it crashes while running and cannot be recovered |
Table 3 Fault Code
| Fault Code 01 | Fault Code 02 | ||
| Code | Description | Code | Description |
| 1 | “Emergency stop button action fault” | 17 | “AC input under voltage fault” |
| 2 | “Smoke sensor fault” | 18 | “DC bus output over voltage fault” |
| 3 | “AC circuit breaker fault” | 19 | “DC bus output under voltage fault” |
| 4 | “DC bus output connector fault” | 20 | “DC bus output over current fault” |
| 5 | “DC bus output fuse fault” | 21 | “Charging module fault” |
| 6 | “Charge interface electronic lock fault” | 22 | “Charging module AC input alarm” |
| 7 | “Charger fan fault” | 23 | “Charging module input over voltage alarm” |
| 8 | “Lightning arrest fault” | 24 | “Charging module input under voltage alarm” |
| 9 | “Insulation detection fault” | 25 | “Charging module input phase loss alarm” |
| 10 | “Battery reverse connection fault” | 26 | “Charging module output short circuit alarm” |
| 11 | “Vehicle control guide failure duringcharging” | 27 | “Charging module output short circuit alarm” |
| 12 | “Charging pile over temperature fault” | 28 | “Charging module output over voltage alarm” |
| 13 | “Charging interface over temperature fault” | 29 | “Charging module output under voltage alarm” |
| 14 | “Charging gun not returning alarm” | 30 | “Charging module over temperature alarm” |
| 15 | “BMS communication fault” | 31 | “Charging module communication alarm” |
| 16 | “AC input over voltage fault” | 32 | “Charging module fan alarm” |
| Code | Description | Code | Description |
| 33 | “Access control failure” | 101 | “External temperature sensor failure alarm” |
| 34 | “DC output connector adhesion failure” | 102 | “Insulation detection unit communication isbroken” |
| 35 | “Insulation monitoring alarm” | 103 | “Power meter communication is off” |
| 36 | “Discharge circuit failure” | 104 | “IC card reader communication is broken” |
| 37 | “Charging pile over temperature alarm” | 105 | “Communication with the host computer isbroken” |
| 38 | “Charging gun over temperature alarm” | 106 | “Disconnected from TMU” |
| 39 | “AC input connector actuation/Misoperationfault” | 107 | Flash write failure |
| 40 | “AC input connector adhesion failure” | ||
| 41 | “Auxiliary power failure” | ||
| 42 | “Parallel connector actuation/misoperationfault” | ||
| 43 | “Parallel connector adhesion failure” | ||
| 44 | “Module communication failure” | ||
| 45 | “Parallel communication failure” | ||
| 255 | “Voltage transmitter failure” | ||
| 46 | “In parallel mode, the other gun ismalfunctioning” | ||
| Fault Code 05 | Fault Code 06 | ||
| Code | Description | Code | Description |
| 200 | “Max allowable charging voltage of thebattery is less than the minimum outputvoltage of the charger” | 216 | “The voltage of the single power battery in theBSM message is too low” |
| 201 | “DC output connector outside voltage ≥10V before insulation monitoring” | 217 | “SOC in BSM message is too high” |
| 202 | “The difference between the outsidevoltage of the DC output connector and thecommunication message battery voltagebefore charging is greater than ±5%” | 218 | “SOC in BSM message is too low” |
| 203 | “The outside voltage of the DC outputconnector before charging is lower than theminimum output voltage of the charger” | 219 | “Charging over current in BSM message” |
| 204 | “The voltage outside the DC outputconnector before charging is greater than the maximum output voltage of the charger” | 220 | “The temperature of the power battery in theBSM message is too high” |
| 205 | “The battery terminal voltage is greaterthan the maximum allowable chargingvoltage of the battery” | 221 | “The insulation status of the power battery in theBSM message is abnormal” |
| 206 | “BRM message receiving timeout” | 222 | “The connection status of the connector in theBSM message is abnormal” |
| 207 | “BRM message data item is abnormal” | 223 | “CTR determines that the voltage of the single |
| battery is too high” | |||
| 208 | “BCP message receiving timeout” | 224 | “CTR determines that the temperature of thesingle battery is too high” |
| 209 | “BCP message data item is abnormal” | 225 | “BMS abnormally terminates charging” |
| 210 | “BRO message (0x00) receiving timeout” | 226 | “Charging pile judges other abnormaltermination of BMS” |
| 211 | “BRO message (0xAA) receiving timeout” | 227 | “The maximum allowable charging current of thebattery is less than the minimum output currentof the charger” |
| 212 | “Battery charge request message (BCL)timeout” | 228 | “During the charging process, the deviationbetween the sampling voltage of the BMS andthe sampling voltage of the charger exceeds 10minutes” |
| 213 | “Battery charge status message (BCS)timeout” | 229 | “The completion condition is not reached within1 minute of pre-charging” |
| 214 | “Power battery status information (BSM)timeout” | 230 | “Suspend charging for more than 10 minutes” |
| 215 | “Over voltage of single power battery inBSM message” |
11 Appendix
12.Quality Assurance
. Non-human faults during the warranty period, our company will repair or replace new products free of charge. Warranty:12 Months
. During the warranty period, the company requires customers to show the invoice and date of purchase of the product。At the same time, the trademark on the product should be clearly visible, otherwise it has the right not to guarantee the quality.
The unqualified products after replacement will be handled by our company 。 Customers should reserve reasonable time for the company to repair malfunctioning equipment.The
company reserves the right not to guarantee quality if the following situations occur:
1,The whole machine and parts have exceeded the free warranty period
2,Delivery damage
3,Incorrect installation, modification or use
4,Outdoor charging on rainy days causes water damage to the charging pile
5,The very harsh environment specified exceed this manual
16 / 17
6,Machine fault or damage caused by installation, repair, modification or destruction by
non-company service personnel
7,Machine fault or damage caused by using non-standard or not confirmed by our company.
8,Anything beyond the scope of use specified in the relevant national standards
9,Damage caused by abnormal natural environment
If the product fault due to the above circumstances, the customer requires maintenance service. After the judgment of the company’s service organization, the paid maintenance
service can be provided
Note:
If the product size and parameters are changed, please refer to the latest information of our
company。
The company is not responsible for any loss caused by the configuration software products
provided with the product。
It is prohibited to use part or all of the data in the firmware or software developed by the
company for commercial purposes in any way。
It is prohibited to decompile, decrypt, or destroy the original program design of the software
developed by the company.