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DC charging pile fault solution——kzd-2 fault solution

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2024-2-29 Viewed：

DC charging pile troubleshooting methods
serial number	Fault name	Cause of failure	Treatment method	Remark
1	A. Electronic lock lock timeout	After locking the electronic lock, the electronic lock feedback is not closed.	1. Detect the working mode of electronic lock, 2. Check whether the electronic lock wiring is reversely connected
2	A. Handshake communication timeout	The control panel and vehicle BMS start handshake can communication	1. Check whether the S+ S- communication line is correct, 2. Check whether bms power supply A+A- is supplied to the car correctly. 3. Confirm whether the BMS voltage of the car is 12V or 24V. 4. Check whether the gun line is disconnected	All the above are fine. Capture and parse the packets.
3	A. The voltage outside the contactor is >10V	After inserting the gun, the main control board tests the vehicle interface voltage. If it is greater than the national standard of 10V, it cannot be started.	1. After the gun is unplugged, use a multimeter to directly test whether the voltage at the car interface is >10V. 2. After the entire pile is powered off and the module fan stops rotating, power on and retest. 3. Check the high-voltage circuit. Continuous startup in a short period of time may cause the above faults.
4	A. High voltage contactor failure	Measure the input and output voltage comparison of the high-voltage contactor when the high-voltage contact is open and closed	1. Detect high-voltage contact control to ensure the normal operation of the high-voltage contactor 2. Manual output detects whether the voltage is consistent before and after high-voltage contact 3. Replace with new high-voltage contactor
5	A. DC output circuit failure	The high-voltage contact pulls in, the module boosts the voltage, and measures whether the high-voltage contact voltage reaches the required module output voltage.	1. Detect the high-voltage measurement circuit, 2. Check whether the contactor is closed 3. Check whether the module is online normally, whether there is an alarm or faulty module 4. Check whether the shunt to the meter is connected reversely.
6	A. Insulation detection alarm	Insulation measurement value is greater than 100 ohms/volts and less than 500 ohms/volts	1. There is a short circuit and leakage. Please charge and check the circuit.
7	A. Communication failure of insulation monitoring module	Insulation monitoring communicates with the main control board in real time. The main control board usually reports a timeout if it does not receive any data within 5 seconds.	1. There is a short circuit in the gun wire problem. Check whether A+ A- are in contact. 2. Check the insulation, check the power supply, check the insulation address A gun address 10, B gun address 11.
8	A. Insulation detection failure	Insulation measurement less than 100 ohms/volt	1. Do not continue charging and check the circuit insulation. 2. Check whether the insulation detection module PE is grounded
9	A. Identification communication timeout	can communication timeout	1. Check the can line, S+ S- 2. Check whether the bms power supply, 12v power module, A+ A- has power 3. Select whether the old national standard 2011 can start charging. 4. The pile may leak electricity and the car will not be allowed to charge.
10	A. Configure communication timeout	can communication timeout	1. Check the can line, S+ S- 2. Check bms power supply, 12v power module, A+ A- 3. Select whether the old national standard 2011 can start charging.
11	A. Abnormal vehicle battery voltage	Precharge during configuration phase	Check the high-voltage circuit. You may need to capture the message. Select the old national standard 2011 to see if charging can be started.
12	A. Communication timeout during charging	Timeout during charging	I guess I need to grab the messages and take a look. This is the most troublesome.
13	A. The gun connection is disconnected during charging	The CC1 of the charging gun is disconnected and charging is terminated.	1. Check whether gun line CC1 is loose
14	A.End charging timeout	The charging end message is incomplete and CST BST CSD BSD messages should be sent to each other.	The bms program may not comply with the national standard, but it does not affect the use and can be ignored.
15	A. During charging, open the cabinet door to terminate charging.	The cabinet door switch is installed, the switch signal is valid during charging, the switch is turned off when the door is closed, and the door is closed.	1. Check the cabinet door switch circuit
16	01. DC module communication timeout fault	Module communication timeout	1. Check whether the module power supply is normal 2. Check the module CAN line Check the charging status on the screen to see if the module is online. 3. Check whether the module model and module communication protocols of the administrator debugging interface are consistent.
17	01. Internal fault of DC module	can communication reads the internal status of the module, which is generally a combination of several module failures.	It is estimated that there is something wrong inside the module. It is recommended to replace the module.
18	01. DC module protection alarm	Module input output alarm	Generally, there will be an alarm when the module current is limited, and the normal output operation can be ignored.
19	There is voltage but no current	Normal charging, module normal output voltage and no current	1. Check whether the main contactor is closed and whether the gun wire is broken. 2. Whether the high-voltage contactor of the train section is closed 3. The module output terminal is defective and the module is damaged.
20	Meter communication failure	DC meter communication protocol is compatible with DL/T645-2007	1. Set the correct meter address to 12 digits (the metering address of dual-circuit meter B adds 1 to the mantissa) 2. Baud rate 1200, 2400, 4800, 9600, (Yada default 2400, Even) 3. The check digit Even is an even check, Onoe is an odd check, and odd is an invalid check.
21	A. AC input overvoltage fault	When the DC pile uses an AC meter for billing, the parameters of the meter are read through the meter, and the parameter setting value does not match the alarm.	Generally, the communication form is not used and it is recommended to close it.
22	A. AC input undervoltage fault	When the DC pile uses an AC meter for billing, the parameters of the meter are read through the meter, and the parameter setting value does not match the alarm.	Generally, the communication form is not used and it is recommended to close it.
23	A. AC input overcurrent fault	When the DC pile uses an AC meter for billing, the parameters of the meter are read through the meter, and the parameter setting value does not match the alarm.	Generally, the communication form is not used and it is recommended to close it.
24	Output control board communication timeout	When the DC pile controls the external expansion board, it communicates in real time. Generally, the main control board will report a timeout if it does not receive any data within 5 seconds.	If the communication is normal and the indicator light of the auxiliary control class flashes quickly, check the wiring and check that the board is working properly.
25	Module output voltage timeout fault	The module does not reach the set voltage within the specified time.	1. Check whether the module is online 2. Check whether ADC+- is connected to the lower end of the high-voltage contactor 3. Check the module setting parameters in the administrator 4. Module failure
26	The BMS actively terminates charging when it is not fully charged.	The car automatically stopped charging, protecting it.	1. Problems with the car (battery temperature is too high, etc.). Change a few more cars. 2. Pile leakage, high gun temperature, etc. 3. Switch to BMS2011
27	Discharge voltage＞60V discharge timeout	The output does not drop below 60V within 5s, and the module voltage cannot be lowered.	1. Measure the voltage value when the module is turned off. If the voltage is >60v, it will report. 2. There is a problem with the leakage of one of the modules. You need to remove it one by one to eliminate it. Or if the module directly reports the fault light, it will also report.
28	The intermediate bridge contactor refuses to move.
29	Current increased by 800A	There is interference in the meter wire	1. Use shielded wires for the I+ I- wires of the electric meter. 2. Run the I+ I- wires of the electric meter separately.
30	Charging current is 0		1. Check the meter address
31	The screen stops at the initial page	1. Confirm that the display TX is connected to the mainboard RX, and the display RX is connected to the mainboard TX. 2. Power off and restart 3. Check whether the main chip light on the motherboard is on. There is no program on the motherboard and the display does not work.
32	Module is not online	1. Check the charging status bar to see if the module is online. 2. Enter the debugging administrator page and select the module manufacturer 3. Check the module CAN line, and the module that needs to be dialed must be dialed. 4. Power on again
33	4G networking	1. Set the correct background number (IP address, port number) on the display screen 2. Confirm that the 4G DTU is configured with the correct background IP and port number The PWR light on the 3.4G DTU is always on 4. Confirm that the traffic card is normal
34	Meter communication failure	1. Confirm whether the meter is 645 protocol 2. The administrator sets the default baud rate and parity bit of the meter. 3. The administrator sets the 12-bit address of the electric meter (dual-circuit electric meter B metering address mantissa + 1)
35	Fixed charge	After setting the charging amount, it will automatically charge according to the set amount.	Charging will automatically stop when the consumption amount reaches the set value or the card money is less than 5 yuan.
36	Quantitative charging	After setting the charging power, it will automatically charge according to the set power.	Charging will automatically stop when the charged amount reaches the set value or the card money is less than 5 yuan.
37	Regular charging	After setting the charging time, it will automatically charge according to the set time.	Charging will automatically stop when the charged time reaches the set value or the card money is less than 5 yuan.
38	Make an appointment to charge	After setting the startup charging time period, the system will automatically start according to the set time.	When the time of day reaches the set value, charging starts.
39	Manual charging	There is no CP communication function and the power will not be automatically cut off after the gun is drawn. It is not recommended to use.	This type will output a CP signal, but does not detect the inserted gun. It is recommended for old cars.
40	automatic charging	After automatically communicating with the car charger, it will be fully charged	Select automatic full for normal charging.

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Industry Information

DC charging pile fault solution——kzd-2 fault solution

DC charging pile troubleshooting methods——kzd-2 troubleshooting method