What are the common faults of the charging module in the DC screen?How to solve?_Chuanyang Electric Co., Ltd.
What are the common faults of the charging module in the DC screen?How to solve?
Date of publication: 2019-6-1
The common faults of the charging module in the DC screen are as follows: charging module protection, DC screen charging module failure, DC screen charging module uneven current, DC screen charging module communication interruption, DC screen charging module half-load output, DC screen charging module The voltage output cannot reach the set voltage.1. DC screen charging module protection: the charging module AC input overvoltage, undervoltage, and overtemperature will cause the charging module protection, please confirm according to the fault code; the cabinet is equipped with glass doors or the cabinet is airtight, which may cause the charging module to overheat protection ; Too high ambient temperature in the computer room will also lead to overheating protection of the charging module.2. DC screen charging module failure: the output voltage of the charging module is too high or the IGBT overcurrent will cause the module to fail. It is required to disconnect the AC and restart the module to restore the module to normal; unreasonable voltage adjustment may cause the output of the module charging module Overvoltage, in this case, you need to turn the voltage adjustment potentiometer counterclockwise to the minimum after the power is turned off (you can hear a slight click of the potentiometer when it is adjusted to the minimum), and then re-adjust the output voltage of the module.3. Unbalanced current flow of DC screen charging module: If the current sharing line is not connected, it may cause uneven current flow; current sharing cannot be performed between the control module and the closing module; disconnect the current sharing line and the communication line, load the module, and measure the module The signal on the current-sharing port should meet the requirements of i/I*2V, where i is the actual output current of the charging module, and I is the rated output current of the charging module; 4. The communication of the DC screen charging module is interrupted: Setting the address of the charging module incorrectly will cause the communication of the charging module to be interrupted, and setting the same address for two different charging modules will also cause the communication of the monitoring module to be interrupted; the setting of the charging module type (level current limiting and stepless current current) will cause the monitoring module Communication is interrupted; poorly connected or not connected to the ground wire of the charging module may cause the communication of the charging module to be interrupted; if the charging module is overloaded, the communication may be interrupted. If the ground wire is good, it can be solved by adding a communication adapter; errors in the monitoring module The setting of the serial port number will cause the communication of the charging module to be interrupted; the address of the charging module must be set from 0, and the address must be set continuously.5. DC screen charging module half-load output: some charging modules have the function of phase loss and half-load output protection, please check the AC input voltage of the charging module.6. The voltage output of the DC screen charging module cannot reach the set voltage: the overload of the charging module will cause the current limit, so that the output voltage of the charging module cannot reach the set value; the battery current detection error will cause the charging module to limit the current and fail to reach it. Set output voltage value.You may be interested in DC screen: DC screen wiring diagram collection of buried transformer foundation diagram collection of main technical parameters of buried transformer landscape performance characteristics of buried transformer factors that need to be considered when selecting a DC screen
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