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Summary of Contents for Valen MPPT 30A
- Page 2 The Valen MPPT 30A real time monitoring tracks the highest voltage and current values, ensuring the battery is charged at maximum power with the greatest efficiency from the solar panel. It’s designed to be used in off-grid solar photovoltaic systems to coordinate operation of the solar panel, battery and load, functioning as the core control unit in off-grid photovoltaic systems.
- Page 3 The controller employs a built-in over-temperature protection mechanism. When temperature surpasses the set value, the charging current will decline in linear proportion to the temperature so as to cur the temperature rises of the controller, effectively keeping the controller from being damaged by overheat. Featuring a temperature compensation function, the controller can automatically adjust charging and discharging parameters in order to extend the battery’s service life.
- Page 4 Meanwhile, due to charging ambient temperature and illumination conditions, the max. power point varies frequently, and the Valen MPPT 30A controller can adjust parameter settings according to the environmental conditions in real time, so as to always keep the system close to the max. operating...
- Page 5 As one of the charging stages, Valen MPPT 30A can not be used alone, but has to be used together with boost charging, float charging, equalise charging, etc. to complete charging the battery. A complete charging process includes: fast charging, sustaining charging and float charging. The charging curve is shown below.
- Page 6 Some types of batteries benefit from regular equalise charges which can stir the electrolyte, balance the battery voltage and finish the electrochemical reaction. Equalise charging raises the battery voltage to a higher level than the standard supply voltage and gases the battery electrolyte. If the controller then automatically steers the battery into equalise charging, the charging duration is 120 minutes (default).
- Page 7 The wiring terminals on the controller can be connected with a single battery or a pack of batteries. Following descriptions in this manual apply to systems employing either a single battery or a pack of batteries. Follow the safety advice given by the battery manufacturer. When selecting connection wires for the system, follow the criterion that the current density is not larger than 4A/mm².
- Page 8 Remove the two screws on the controller, and then begin the wiring operation. In order to guarantee installation safety, we recommend the following wiring order; however, you can choose not to follow this order and no damage will be incurred to the controller. Connecting to external temperature sampling interface.
- Page 9 enough, the controller’s charging indicator will light up or flash and begin to charge the battery. After successfully connecting the battery and photovoltaic array, finally close the fuse or breaker of the load, and the you can manually test whether the load can be normally turned on and off.
- Page 10 Steady On Normal Battery Voltage Slow Flashing Battery Over-discharged (A cycle of 2s; on/off lasting for 1s) Quick Flashing Battery Over-voltage (A cycle of 2s; on/off lasting for 0.1s) Load turned off Quick Flashing Load overload/short-circuited (A cycle of 2s; on/off lasting for 0.1s) Steady On Load functioning normally System operating normally...
- Page 11 During start-up, the 4 indicators will first flash successively, and after self-inspection, the LCD screen starts and displays the battery’s voltage level which will be either a fixed voltage selected by the user or a voltage automatically recognised. When no sunlight is present, the solar panel voltage is lower than the light control on voltage, and after a time Sole light control delay, the controller will switch on the load;...
- Page 12 delay, the controller will switch on the load. The load will be switched off after working for a pre-set time. The user can switch the load on or off by the keys, no matter whether it’s day or night. This mode is designed for Manual mode some specifically purposed loads, and also used in the debugging process.
- Page 13 The controller enables users to customise the parameters according to the actual conditions, but parameter setting must be done under the guidance of a professional person, or else faulty parameter settings may render the system not able to function normally. TYPE OF BAT Battery Type User/flooded/sealed/gel...
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Page 14: Over Temperature Protection
OVER-TEMPERATURE PROTECTION when the controller temperature exceeds the set value, it will decrease the charging power or halt charging. See the following diagram: To ensure the controller’s performance is kept at its optimum level, we recommend that the following items be checked twice a year: Make sure the airflow around the controller is not blocked and clear away any dirt or debris on the radiator. - Page 15 System Voltage 12V/24V Auto No-Load Loss 0.7W to 1.2W Battery Voltage 9V to 35V Max. Solar Input Voltage 100V (25°C) 90V (-25°C) Max. Power Point Voltage Range Battery Voltage +2V to 75V Rated Charging Current Rated Load Current Max. Capacitive Load Capacity 10000uF Max.
- Page 16 When selecting User, the battery type is to be self-customised, and in this case, the default system voltage parameters are consistent with those of the sealed lead-acid battery. When modifying battery charging and discharging parameters, the following rule must be followed: Over-voltage cut-off voltage >...
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