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Summary of Contents for PowerTech LL00233
- Page 1 LL00233 MPPT Solar Charge Controller for Lithium or SLA Batteries Instruction Manual...
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Page 2: Table Of Contents
Tabl e of Cont ent s Import ant Saf et y Inst ruct ions Quick St art Guide General Inf ormat ion Overview Characteristics Inst al l at ion Attention Requirements for the PV array Wire size Mounting Operat ion Buttons Interface Settings... -
Page 3: Important Safety Instructions
IMPORTANT SAFETY INSTRUCTIONS: Pl ease reser ve t his manual f or f ut ure review . This manual contains all safety, installation, and operation instructions for the MPPT solar controller (“controller” referred to in this manual). • Read all the instructions and warnings carefully in the manual before installation. -
Page 4: Quick Start Guide
QUICK START GUIDE: For best results, use the thickest cable you can a ord that will t in the connectors. Make sure all screwed connections are as tight as possible. Panel (PV) voltage must be higher than battery voltage. A 12V battery is OK with a 12V or higher solar (PV) array, a 24V battery will only work with a 24V or higher solar (PV) array. -
Page 5: General Information
GENERAL INFORMATION: OVERVIEW Adopting the advanced MPPT control algorithm, the solar controller can minimize the maximum power point loss rate and loss time. It makes this product tracks the PV array's maximum power point and obtains maximum energy under any situation. Compared with the PWM charging method, MPPT solar controllers can increase the energy utilization ratio by 10%- 30%. - Page 6 GENERAL INFORMATION: • A power protection chip, which can provide 5VDC/ 200mA power and over current, short circuit protections, is adopted by the communication interface • Support monitoring and setting the parameters via the APP or PC software • Comprehensive electronic protection For the BCV, FCV, LVD, and LVR, users can modify them on the local controller when the battery type is "USE."...
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Page 7: Characteristics
GENERAL INFORMATION: CHARACTERISTICS Figure 1 Product Charact erist ics SELECT button RS485 port RTS interface Mounting Hole Φ5mm PV terminals ENTER button Battery terminals Load terminals Suppose the remote temperature sensor is not connected to the controller or damaged. In that case, the controller will charge or discharge the battery at the default temperature setting of 25°C (no temperature compensation). - Page 8 GENERAL INFORMATION: MAXIMUM POWER POINT TRACKING TECHNOLOGY Due to the nonlinear characteristics of the solar array, there is a maximum energy output point (Max Power Point) on its curve. Traditional controllers, equipped with switch charging technology and PWM charging technology, can't charge the battery at the maximum power point and cannot obtain the maximum energy available from the PV array.
- Page 9 GENERAL INFORMATION: According to the test, the MPPT controller can raise 20%- 30% e ciency compared to the PWM controller. (Speci ed value may be uctuant due to the in uence of the circumstance and energy loss.) Figure 1- 2 Maximum Pow er Point Tracking Technol ogy In actual application, as shading from cloud, tree, and snow, the panel may appear Multi- MPP.
- Page 10 GENERAL INFORMATION: Suppose the program works im properly after appearing Multi-MPP. In that case, the system will not work on the real m ax power point, which m ay waste m ost solar energy resources and seriously a ect the system's norm al operation.
- Page 11 GENERAL INFORMATION: B) Con st an t Ch ar gi n g When the battery voltage reaches the constant voltage set point, the controller will start to operate in constant charging m ode. The MPPT charging stops during this process, and the charging current will drop gradually at the sam e tim e.
- Page 12 GENERAL INFORMATION: • Due to the installation environment or load work , t he system may not stabilize the battery voltage at a constant voltage. The controller will accumulate the time when the battery voltage is equal to the set value. When the accumulative time is equal to 3 hours, the system will IMPORTANT automatically switch to oat charging.
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Page 13: Installation
INSTALLATION: ATTENTION • Be very careful when installing the batteries. Please wear eye protection when installing the open- type lead- acid battery and rinse with clean water in time for battery acid contact. • Keep the battery away from any metal objects, which may cause a battery short circuit. - Page 14 INSTALLATION: The above parameters are calculated under standard test conditions (STC (Standard Test Condition): Module Temperature 25°C, Air Mass 1.5, Irradiance 1000W/ m2.) IMPORTANT (2) Max. PV Array Pow er This MPPT controller has the function of charging current/ power- limiting. During the charging process, when the actual charging current or charging power exceeds the rated charging current or charging power, the controller automatically limits the current or power.
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Page 15: Wire Size
INSTALLATION: than 1.5 times the controller’s rated charging power. Suppose the PV array’s maximum power exceeds the controller’s rated charging power too much. In that case, it may cause the PV array’s waste and increase the PV array’s open- circuit voltage due to the environmental temperature. It may increase the damage probability to the controller. -
Page 16: Mounting
INSTALLATION: • The wire size is only for reference. Suppose a long- distance exists between the PV array and the controller or between the controller and the battery. In that case, larger wires shall be used to reduce the voltage drop and improve the system performance. - Page 17 INSTALLATION: St ep 2: Connect t he syst em in t he order of bat t er y - l oad - PV array f ol l ow ing Figure 2- 2, " Schemat ic Wiring Diagram," and disconnect t he syst em in t he reverse order.
- Page 18 INSTALLATION: St ep 3: Grounding The MP3768 uses a common- negative controller. Negative terminals of the PV array, the battery can be grounded simultaneously, or any terminal is grounded. However, according to the practical application, the PV array’s negative terminals, battery, and load can also be ungrounded. Simultaneously, the grounding terminal on the shell must be grounded, which e ectively shields the electromagnetic interference from the outside and prevents some electric shock to the human body due to the...
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Page 19: Operation
OPERATION: BUTTONS Modes Not e It can turn the load On/ O via the "ENTER" button in manual Load ON/ OFF load mode. Clear fault Press the "ENTER" button Browsing mode Short press the "SELECT" button Long- press the "ENTER" button to enter the Setting mode, and short press the "SELECT"... -
Page 20: Interface
OPERATION: INTERFACE St at us Descript ion Name Symbol St at us Night PV array No charge Charging PV array's voltage, current, and generate energy Battery capacity, In Charging Battery Battery Voltage, Current, Temperature Battery Type Load ON Load Load OFF LOAD Current/ Consumed energy/ Load mode Error Codes... - Page 21 OPERATION: Brow se Int erf ace Press the SELECT button to cycle display the following interfaces.
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Page 22: Settings
OPERATION: SETTINGS Cl ear t he generat ed energy In the PV power interface, long press the “ENTER” button until the value ashes. Then it enters the reset mode; press the “ENTER” button again to con rm and reset. Sw it ch t he bat t er y t emperat ure unit In the battery temperature interface, long press the “ENTER”... - Page 23 OPERATION: Set t ing t he bat t er y t ype via t he PC sof t w are or APP sof t w are • PC sof t w are Connect the controller and the PC through the USB to the RS485 converter, and set the controller’s parameters through the PC software.
- Page 24 OPERATION: Paramet ers Def ault Range Operat ion St eps Under the " USE " interface, press the ENTER button to enter the “SYS” interface. Press the ENTER button again to display the current “SYS” value. SYS* 12VDC 12/ 24 VDC Press the SELECT button to modify the parameter.
- Page 25 OPERATION: Bat t er y volt age cont rol paramet ers Lead- acid Bat t er y Paramet ers The parameters are measured in the condition of 12V/ 25°C. Please double the values in the 24V system and quadruple the values in the 48V system. Volt age cont rol Seal ed User...
- Page 26 OPERATION: Over Voltage Disconnect Voltage > Charging Limit Voltage ≥ Equalize Charging Voltage ≥ Boost Charging Voltage ≥ Float Charging Voltage > Boost Reconnect Charging Voltage. Over Voltage Disconnect Voltage > Over Voltage Reconnect Voltage C. Low Voltage Reconnect Voltage > Low Voltage Disconnect Voltage ≥ Discharging Limit Voltage.
- Page 27 OPERATION: • The f ol l ow ing rul es must be obser ved w hen modif ying t he paramet er val ues in User f or a l it hium bat t er y. Over Voltage Disconnect Voltage > Over Charging Protection Voltage(Protection Circuit Modules(BMS))+ 0.2V;...
- Page 28 OPERATION: • Load Mode Set t ing Operat ing St eps: Under load mode setting interface, press SET button and hold on 5s till the number begin ashing, then press MENU button to set the parameter, press SET button to con rm. Timer 1 Timer 2 Light ON/ OFF...
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Page 29: Additional Info
ADDITIONAL INFO: PROTECTION Prot ect ion Inst ruct ion When the PV array's actual charging current or power exceeds PV over current the controller's rated charging current or power, the controller charges the battery as per the rated current or power. When not in the PV charging state, the controller will not be damaged in the case of short- circuiting in the PV array. - Page 30 ADDITIONAL INFO: When a short circuit occurs on the load side (which is 4 times higher than the rated load current), the controller automatically cuts o the output. The output still attempts to resume ve times Load short automatically (delay 5 seconds, 10 seconds, 15 seconds, 20 circuit seconds, 25 seconds).
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Page 31: Troubleshooting
ADDITIONAL INFO: TROUBLESHOOTING Issue Fault Sol ut ion Charging LED is OFF during Con rm whether the PV array daytime when sunshine falls on connection of the PV array is open- circuit PV array properly correct and tight The battery Please check the voltage of The wire connection is correct;... -
Page 32: Maintenance
ADDITIONAL INFO: MAINTENANCE The following inspections and maintenance tasks are recommended at least two times per year for the best performance. • Make sure no block on air ow around the controller. Clear up any dirt and fragments on the radiator. •... -
Page 33: Speci Cat Ions
SPECIFICATIONS: Model : MP3768 El ect rical Paramet ers 12/ 24VDC or Auto ① System rated voltage Controller working voltage range 8V~32V Lead- acid battery type Sealed (default), GEL, FLD, and user- de ned. Lithium battery type LiFePO4/ Li(NiCoMn)O2/ User Battery fuse 80A/ 58V Rated charging current...
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