enertik MP-20-12/24 User manual

User ManualCE, Rohs, ISO9001:2015Subject to change without notice!Solar Controller
MP-20-12/24
MP-40-12/24
MP-60-12/24
MP-60-12/24/48

Contents1.11.1 11.2 Liability Exclusion.......................................................................................................................................................................123.33.1 The dimensions of MP-20-12/24.......................................................................................................................................33.2 The dimensions of MP-40-12/24......................................................................................................................................43.2 The dimensions of MP-60-12/24 and MP-60-12/24/48.................................................................................................54.64.1 Characteristics...............................................................................................................................................64.Temperature Sensor..............................................................................................................................................................64.RS485............................................................................................................................................................................................64.4 Optional Accessories............................................................................................................................................................75.85.1 Installation Notes...................................................................................................................................................................85.2 Mounting Location Requirements.................................................................................................................................95.3 Fix the controller.....................................................................................................................................................................95.4 Wiring Specifications...........................................................................................................................................................95.5 Connection..............................................................................................................................................................................115.6 Grounding...............................................................................................................................................................................116.Operation.......................................................................................................................................................116.1 LED Indicator..........................................................................................................................................................................116.2 Key Function...........................................................................................................................................................................126.3 LCD Display.............................................................................................................................................................................126.4 Parameters setting..............................................................................................................................................................147.Protections, Troubleshooting and Maintenance................................................................................167.1 Trouble shooting..................................................................................................................................................................167.2 Protection................................................................................................................................................................................177.3 Maintenance...........................................................................................................................................................................1718Safety instructions and waiver of liability....................................................................................................Safety Instructions.....................................................................................................................................................................Pruduct Overview.............................................................................................................................................Dimensions......................................................................................................................................................Structure & Accessory..................................................................................................................................Structure & 2 3 Installation......................................................................................................................................................8.Technical Data.................................................................................................................................................2.

1, Safety instructions and waiver of liabilityThe following symbols are used throughout this manual to indicate potentially dangerous conditions or mark important safety instructions. Please take care when meeting these symbols. WARNING: Indicates a potentially dangerous condition. Use extreme caution when performing this task. Dear Clients, Thank you for purchasing our MP Charge Controller. Your support and trust in us are much appreciated. Please take time to read this manual, this will help you make full use of the many advantages this controller can provide your PV-System with. This manual presents important recommendations for installing, operating and monitoring. Read it with special care in your own interest and please pay attention to the safety recommendations herein indicated.1.2 The manufacturer shall not be liable for damages, especially on the battery, caused by use other than as intended or as mentioned in this manual or if the recommendations of the battery manufacturer are neglected. The manufacturer shall not be liable if there has been service or repair carried out by any unauthorized person, unusual use, wrong installation, or bad system design.Liability Exclusion1.1 Safety InstructionsCAUTION: 1) There are no user serviceable parts inside the controller. Do not disassemble or attempt to repair the controller. 2) Keep children away from batteries and the charge controller.CAUTION: Indicates a critical procedure for safe and proper operation of the controller.1

A combination of multiple tracking algorithms enables tracking the maximum power point quickly and accuratelyInnovative Max Power Point Tracking(MPPT) technology, tracking efficiency >99.9%Full digital technology, high charge conversion efficiency up to 98%Real-time energy statistics functionFlexible System battery selection: Liquid, Gel, AGM and Lithium Four stages battery charging process: MPPT, boost, equalization, floatDual automatic protection to avoid exceeding the rated charging power and currentMultiple load control modes: Always on, Dusk to Dawn, Evening and ManualIoT wireless communication or Bluetooth communication functions optionalOptional APP version for Bluetooth communicationWith the wireless communication function of the IoT, the controller can be connected remotely through IoT/GPRSMonthly charging data can be calculated and displayed by grouping and graphsBased RS-485 standard Modbus protocol with RJ11 interface to maximize the communication needs of different occasions.Full automatic electronic protect function for increased charge controller availabilityLCD display design, read operating data and working condition easily12/24/36/48V automatic recognitionPerfect EMC & thermal designExtends battery life through accurate remote temperature sensorController is protected against over-temperature due to built-in power reduction functionMP series solar controller is based on an advanced maximum power point tracking (MPPT) technology developed,
dedicated to the solar system, the controller conversion efficiency up to 98%.
It comes with a number of outstanding features, such as:MPPT profileThe full name of the MPPT is maximum power point tracking. It is an advanced charging way which could detect the real-time power of the solar Modulel and the maximum point of the I-V curve that make the highest battery charging efficiency. Current Boost Under most conditions, MPPT technology will "boost" the solar charge current. MPPT Charging：Power Into the controller (Pmax)=Power out of the controller (Pout) Iin x Vmp= Iout x Vout* Assuming 100% efficiency. Actually, the losses in wiring and conversion exist. If the solar module's maximum power voltage (Vmp) is greater than the battery voltage, it follows that the battery current must be proportionally greater than the solar input current so that input and output power are balanced. The greater the difference between the Vmp and battery voltage, the greater the current boost. Current boost can be substantial in systems where the solar array is of a higher nominal voltage than the battery as described in the next section.2, Overview2.2 MPPT2

An Advantage Over Traditional Controllers Traditional PWM controllers connect the solar module directly to the battery when recharging. This requires that the solar module operate in a voltage range that is usually below the module's Vmp. In a 12 Volt system for example, the battery voltage may range from 10.8-15 Vdc，but the module's Vmp is typically around 16 or 17V.Because traditional controllers do not always operate at the Vmp of the solar array, energy is wasted that could otherwise be used to charge the battery and power system loads. The greater the difference between battery voltage and the Vmp of the module, the more energy is wasted. High Voltage Strings and Grid-Tie ModulesAnother benefit of MPPT technology is the ability to charge batteries with solar arrays of higher nominal voltages. For example, a 12 Volt battery bank may be charged with a 12-, 24-, 36-, or 48-Volt nominal off-grid solar array. Grid-tie solar modules may also be used as long as the solar array open circuit voltage (Voc) rating will not exceed the maximum input voltage rating at worst-case (coldest) module temperature. The solar module documentation should provide Voc vs. temperature data. Higher solar input voltage results in lower solar input current for a given input power. High voltage solar input strings allow for smaller gauge solar wiring. This is especially helpful and economical for systems with long wiring runs between the controller and the solar array. P(W)10.8V15V17VVP curve0I(A)V(V)MPP10.8V15V17VTypicalBatteryVoltageRangeVI curve0V(V)PxPmax-PxMPPPWMControllerOperatingRangeNominal 12 Volt Solar Module I-V curve and output power graph.Contrast with the traditional PWM controller, MPPT controller could play a maximum power of the solar panel so that a larger charging current could be supplied. Generally speaking, the controller's energy utilization efficiency is 15%~20% higher than PWM controller. Conditions That Limit the Effectiveness of MPPT The Vmp of a solar module decreases as the temperature of the module increases. In very hot weather, the Vmp may be close or even less than battery voltage. In this situation, there will be very little or no MPPT gain compared to traditional controllers. However, systems with modules of higher nominal voltage than the battery bank will always have an array Vmp greater than battery voltage. Additionally, the savings in wiring due to reduced solar current make MPPT worthwhile even in hot climates.

2.3 MPPT—Four Charging Stage MP series controller has a 4-stage battery charging algorithm for rapid, efficient, and safe battery charging.MPPT ChargeIn this stage, the battery voltage has not yet reached boost voltage and 100% of available solar power is used to recharge the battery. Boost ChargeWhen the battery has recharged to the Boost voltage setpoint, constant-voltage regulation is used to prevent heating and excessive battery gassing. The Boost stage remains 120 minutes and then goes to Float Charge. Every time when the controller is powered on, if it detects neither over discharged nor overvoltage, the charging will enter into boost charging stage. Float ChargeAfter the Boost voltage stage, the controller will reduce the battery voltage to Float voltage setpoint. When the battery is fully recharged, there will be no more chemical reactions and all the charge current transmits into heat and gas at this time. Then the controller reduces the voltage to the floating stage, charging with a smaller voltage and current. It will reduce the temperature of battery and prevent the gassing, also charging the battery slightly at the same time. The purpose of Float stage is to offset the power consumption caused by self consumption and small loads in the whole system, while maintaining full battery storage capacity. In Float stage, loads can continue to draw power from the battery. In the event that the system load(s) exceed the solar charge current, the controller will no longer be able to maintain the battery at the Float setpoint. Should the battery voltage remains below the boost reconnect charging voltage, the controller will exit Float stage and return to Bulk charging. Equalize ChargeCertain types of batteries benefit from periodic equalizing charge, which can stir the electrolyte, balance battery voltage and complete chemical reaction. Equalizing charge increases the battery voltage, higher than the standard complement voltage, which gasifies the battery electrolyte. If it detects that the battery is being over discharged, the solar controller will automatically turn the battery to equalization charging stage, and the equalization charging will be 120mins. Equalizing charge and boost charge are not carried out constantly in a full charge process to avoid too much gas precipitation or overheating of battery. WARNING: Risk of explosion! Equalizing flooded battery can produce explosive gases, so well ventilation of battery box is necessary.U(V)MPPT ChargeBoostChargeFloatChargeEqualizeChargeNightTIME13.7V14.5V14.8VNight

3, Dimensions3.1 The dimensions of MP-20-12/24 Unit:mm367.10136.60
136.60
120.00
71.00

117.00
120.003.2 The dimensions of MP-40-12/24
196.50
136.6067.104Unit:mm

3.3 The dimensions of MP-60-12/24 and MP-60-12/24/48 5Unit:mm166.00186.50
262.50
97.50
160.00

4.1Characteristics Structure & ①Heat Sink —dissipate controller heat②Plastic Case—Internal protection③LED & LCD—Display settings and operating status, system parameters ④Key: MENU、OK —Set and view the operating parameters⑤Temperature Sensor Port —Collect temperature information, Temperature compensation. ⑥RJ11 interface —Connecting monitoring devices⑦ Load Terminals—Connected load. ⑧Battery Terminals—Connect the battery. ⑨Solar module terminals—Connected solar modules.4, Structure & Accessory
③④⑧⑨⑦①②⑤⑥
64.2 Temperature Sensor To collect battery temperature data for temperature compensation so the controller can accurately charge the battery. The temperature sensor is connected via interface 5.If the external temperature sensor is not connected or damaged, the controller defaults to the internal temperature information. The controller is shipped with an 80 mm long cable temperature sensor. Should a sensor with a longer cable be required than this needs to be ordered separately.4.3 RS485The charger is equipped with a RS485 port with RJ11 sockets, the RJ11 interface is defined as follows:!Protocol applicable to this controller: Modbus Communication Protocol V3.9RJ11(6P2C) for controller123456
NCRS485-BRS485-ANCNCNC
Pin No.Definition1NCNCNCRS485-ARS485-BNC24356The RS485 interface on this charger is not galvanically isolated and can not be grounded. Do not short circuit unused pin (Note NC).

4.44.4.1 Bluetooth CommunicationTwo options are available:1. BT inside2. BT external (Cyber-BT), and connected via RJ11 connector.Bluetooth communication has the following characteristics： 1. Support Android/iOS mobile phone App2. Realizes wireless monitoring function of PV charge controller3. Use high performance, ultra-low power consumption Bluetooth dedicated chip Option Accessories4. Adopt Bluetooth 4.2 and BLE technologyRefer to Bluetooth APP instructions for detailed operation of mobile APP. 4.4.2 Wireless Communication for Internet of Things The controller equipped with the Internet of Things wireless communication capability has the following characteristics: 1. For the wireless Internet of Things communication functionality the controller can be remotely accessed through IoT/GPRS.2. A variety of options are available for remote monitoring and real-time control through WeChat App /PC program.3. Real-time monitoring of PV voltage, PV charging current, battery voltage, battery current, load voltage, load current and other system parameters as well as charge controller status.4. Real-time automatic fault alarm.Please contact our Sales Team for more details about the IoT wireless communication.7

5, Installation5.1 Installation Notes ⑴ This charge controller must only be used in PV systems in accordance with requirements given in this user manual and the specifications of other system components provided by their manufacturers. No energy source other than a PV generator may be connected to the PV charge controller referred herein.⑵PV-modules must always be disconnected prior to the installation and adjustments of the charge controller; Make sure the circuit breaker, fuse or disconnects of battery terminal are turned off. ⑶ Double check whether battery voltage meets the voltage range of Charge Controller.⑷Batteries store a large amount of energy, never short circuit a battery under any circumstances. We strongly recommend connecting a protection fuse directly to the battery terminal for protection in case of short circuiting the battery.⑸Batteries can produce flammable gases. Avoid provoking any sparks, using fire or any exposed flame close to any batteries, ever. Make sure that the battery room is well ventilated to disperse any gases.⑹Only use insulated tools and avoid placing (any) metal objects near/close to batteries.⑺Be extremely cautious when working with batteries. Wear eye protection by all means. Have fresh water available to immediately wash and clean any contact with battery acid. Get immediately medical aid in case of any hazard that may occur. Never install/handle with batteries alone. ⑻Avoid touching or short-circuiting wires or terminals. Be aware that voltages on given system components, terminals or wires can be a multiple of battery voltage. Only use insulated tools, stand on dry ground, and keep your hands always dry and protected by proper (approved) electrician gloves when working on PV-Systems.⑼Prevent any water, ever, from penetrating the controller, outdoor installation must avoid any direct sunlight and penetration of any water (e.g. rain) and humidity. ⑽After installation make sure that all connections are properly tighten, eliminate any electrical loose connections to eliminate by all means any hot electrical connection spots.CAUTION: Please read all instructions and precautions in the manual before proceeding with the installation! It is recommended to remove the protective film cover from the LCD screen before operation.8

>15CM>15CMCOOL AIRWARM AIR
5.2 Mounting Location RequirementsDo not subject the PV charge controller to direct sunlight or any other heat sources. Protect the PV charge controller from any dust, dirt and moisture. Mount it flat to a vertical wall. Must be a non-flammable material. Maintain a minimum clearance of 15 cm below and around the controller to ensure unhindered air circulation. Mount the PV charge controller not too far from the batteries (for accurate voltage sensing least lessening).Mark the position of the PV charge controller fastening holes on the wall, drill 4 holes and insert dowels, fasten the PV charge controller to the wall with the cable openings facing downwards.5.3 Fix the controllerDrill 4 mounting holes in the wall according to "installation position" and fix the four screws(M5) , then aim the controller's fixing holes at the screws and mount the controller on.95.4 ConnectionWARNING: The PV-module/array can produce open-circuit voltages in excess of 100 Vdc when exposed to sunlight. Pay highest attention to this fact.WARNING: Risk of explosion! In case the battery's positive and negative terminals or leads get ever in touch, i.e. short-circuited, a fire or explosion hazard might get triggered. Always pay maximum when handling batteries and related circuits.CAUTION: 1. If no temperature sensor is connected to the controller, the battery temperature value will display the internal temperature.2.If a power inverter is used the system, directly connect the inverter to the battery. Do not connect it to the controller's load terminals.

We strongly recommend connecting a fuse directly to the battery terminal to protect from any short circuit in the battery circuit. PV-modules generate current whenever light shines on them. The generated current is directly proportional to the light intensity. Even low levels of light, will deliver the PV-Modules no load, full voltage. It is thus utterly advisable to protect PV-modules from any incident light during installation; Never touch uninsulated cables (ends), only use electric insulated tools, and make sure that the wire cross section is adequate for the PV module operating currents. Connections must always be conducted in the sequence as described below.⑤⑦⑥⑧①②③④1st step: Connect accessories(1)Connect the remote temperature sensor cableConnect the remote temperature sensor cable to the interface and place the other end close to the battery.(2)Connect the accessories for RS485 or IoT communication.2nd step: Connect loadsConnect the load cable with the correct polarity of the right-hand side pair of terminals on the solar charge controller (with the lamp symbol). To avoid the presence of any tension on the cable/wires, please connect these first to the load before connecting them to the charge controller.3rd step: Connect the batteryConnect the battery cables observing the correct polarity to the center pair of terminals (make sure you identify the battery marking/symbol on the controller casing!) of the PV charge controller. Pay greatest attention to polarity. Never, ever invert the plus+ and minus- poles). 1) Should your system be nominal 12 Vdc, make sure the battery voltage is between the 5 and 15.5 Vdc voltage range; 2) for 24 Vdc nominal voltage, the battery voltage should be within the 20 to 31 Vdc range; 3) for 36 Vdc nominal voltage, the battery voltage should be within the 31 to 42 Vdc range; 4) for 48 Vdc nominal voltage, the battery voltage should be within the 42 to 62 Vdc range. 5) Voltages are identifiable when the controller is set to a lithium battery. If the polarity is correct, the LCD on the controller will begin to display those.4th step: Connect the solar moduleWhen connecting the PV-Module make sure to cover it from incident sun light. Double check the PV-Module will not exceed the maximum permissible input current of the Charge Controller (please refer to the section Technical Data). Connect the solar module connection cable to the correct polarity of the left pair of terminals on the solar charge controller (with the solar module symbol).5th step: Final workTighten all cables connected to the controller and remove all the remains around the controller (leaving a void of minimum 15 cm).10Remote temperature sensorRS485communicationinterface

5.6 GroundingBe aware that the negative terminals of controller are interconnected and therefore bear the same electrical potential. If any grounding is required, always do this on the negative wires/terminals.CAUTION: For common-negative system, such as motorhome, it is recommended to use a common-negative controller; but if in a common-negative system, some common-positive equipment is used, and the positive pole is grounded, the controller may get damaged.Model Rated charging current Rated discharging current Solar wire diameter(mm²/AWG)Battery wire diameter(mm²/AWG)Load wire diameter(mm²/AWG)MP-20-12/24 20A20A6/106/106/10MP-40-12/24 40A30A10/810/86/9MP-60-12/24
MP-60-12/24/48 60A30A16/516/56/95.5 Wiring Specifications Wiring and installation methods must comply with national and local electrical code/specifications.The wiring specifications of the PV-system battery must be selected according to rated currents. Please check following table for wiring specifications:!controller or between the controller and the battery are required, than larger capacity cables must be used to reduce voltage drop and improve system performance.The indicated cable/wire sizes are for reference only. If longer runs between the PV array and the 6.1 LED indicatorStatusOnFast flash(0.1/0.1s)Flash(0.5/0.5s)Slow flash(0.5/2s)OnOffFast flash(0.1/0.1s)Slow flash(0.5/2s)OnOffFast flash(0.1/0.1s)Slow flash(0.5/2s)OffFast flash(0.1/0.1s)LEDGreen(PV Panel)Yellow(Battery)Red(Load)Blue(Communication)FunctionSolar panel is connected, no charged.MPPT chargingEqual or Boost ChargingFloat ChargingBattery is normal.Over voltage protectionLow voltage protectionBattery voltage is low.Load is on.Load is off.Short circuit or over current protectionOver temperature protectionNo communicationNormal communication6, OperationSolar LEDBattery LEDLoad LEDCommunication LED11

6.3 LCD Display6.3.1 Status Description!PV array charge ampere hours and load ampere hours are off after power failure。
ItemIconStatusPV arrayChargingPV voltagePV currentPV ampere hours of the dayLoad ampere hours of the dayThe total charge ampere hours of the solar panelBatteryBattery capacityBattery voltage(Programmable LVD)Battery currentLoad voltage(Programmable LVR)LoadLoad current The total discharge ampere hours of the loadLoad mode(Programmable)Temperature(Can clear Bluetooth Device Password)Battery type(Programmable)
Mode6.2 Key functionBrowse interfaceStatic displayShort press OK.Press the MENU and OK key at the same time for 1s, the LCD screen will lock the interface. Press the MENU and OK key again for 1s, the LCD interface will unlockand start scrolling. Press the MENU key for 1s to enter the setting mode when the icon appears on the display interface, and exit automatically after 30s or press the MENU.When the controller is working in street lamp mode, press the MENU key for 3s to turn on the load, press the MENU key again or 1min later the load will be turned off.Setting parameterLoad On/OffOperatingMENUOK12

6.3.3 Press OK to browse the interface6.3.2 The interface automatically cycles in the displayed sequence13

StatusIconDescriptionLow voltageOver voltageLoad off, battery frame flashes, the LCD screen displays E3.battery level shows empty, fault icon display, The charge and discharge are off, bicon display, battery flashes, the LCD screen displays E4.attery level shows full, faultLoad off, fault icon display,the LCD screen displays E1.Load off, fault icon display,the LCD screen displays E2.The charge and discharge are off, fault icon display, icon ℃ flashing, the LCD screen displays E5.C.ontroller does not correctly identify system voltageShort circuit Over current Over temperature Controller does not correctly identify system voltage 6.3.4 Fault indication1.Lithium Battery1.Lithium Battery2.Liquid, Gel and AGM Battery2.Liquid, Gel and AGM BatteryLow voltage protection setting range: 12/24V: 9.0-30.0V (default: 10.6V) 12/24/36/48V: 9.0-60.0V (default: 21.0V).Low voltage reconnect setting range is: 12/24V: 9.6-31.0V (default: 12.0V) 12/24/36/48V: 9.6-62.0V (default: 22.4V).The low voltage recovery voltage(LVR) should be higher than the low voltage protection voltage(LVD) at least 0.6/1.2/1.8/2.4V. If it is desired to improve LVD, than LVR must improved first.6.4.3 Clear Bluetooth Device PasswordFor device passwords, please refer to Bluetooth APP instructions. When the icon appears in the display interface, it means that the parameters can be set. Press the MENU key for 1s, then icon flashes, press OK to change the parameter; when the setting is finished,you can wait 30 seconds to exit the setting mode automatically, or you can press the MENU to exit the setting mode.6.4.1 Low voltage protection6.4.2 Low voltage reconnectLow voltage protection setting range：10.8~11.8V/21.6~23.6V(default: 11.2/22.4/33.6/44.8V)./32.4~35.4/43.2~47.2Low voltage reconnect setting range：(default : 12/24/36/48V).11.4~12.8/22.8~25.6/34.2~38.4/45.6~51.2VWhen the LCD shows as displayed at left, press the MENU key for 1s,the icon flashes, now you can set the controllerlow voltage protection.'s When the LCD shows as left, press the MENU key for 1s, the icon flashes, you can set the controller low voltage reconnect.displayed at 'sWhen the LCD shows as left, press the MENU key for 1s, the icon flashes, you can press OK to clear the Bluetooth device password set bythe mobile app. displayed at 6.4 Parameters setting14

6.4.4 Battery typeWhen the LCD shows left, press the MENU key for 1s,the icon flashes , now you can set the battery type.as displayed at Battery typeGEL(Default)AGMLiquidLithiumDisplay1.Charging Voltage Parameters(Liquid, GEL, AGM)When choosing Liquid, GEL or AGM for battery type, the parameters of boost, and float charge voltage can be set by IoT, RS485 or bluetooth APP. The range of parameters is as follows. The following voltage parameters are 25℃/12V system parameters, in a 24/36/48V system displayed values are multiplied by a factor of 2/3/4.equalizationBoostCharging Voltage RangeDefault charging voltageCharging stage 14.0~14.8V14.5V14.0~15.0V14.8V13.0~14.5V13.7VFloatEqualization2.thiumThe controllers are suitable for all kinds of lithium batteries. When choosing lithium battery type, the overcharge protection and overcharge recovery voltage of lithium battery can be set by IoT, RS485 or bluetooth APP. Charge target voltage range: 12/24V: 10.0-32.0V (default:14.4V) 12/24/36/48V: 10.0-64.0V (default:29.4V) Charge recovery voltage setting range: 12/24V: 9.2-31.8V (default:14.0V) 12/24/36/48V: 9.2-63.8V (default:28.7V) Charging Voltage Parameters(Li)Note: (Overcharge Recovery Voltage+1.5V)≥Lithium Overcharge Protection Voltage≥(Overcharge Recovery Voltage+0.2V) Parameter setting out of range is not supported.Warning: The required accuracy of BMS shall be at least 0.2V. If tolerance is larger than 0.2V, manufacturer will not assume any liability for any consequent system malfunction.6.4.5 Load modeWhen the LCD shows left, press the MENU key for 1s, the icon flashes, now you can set the load mode.as displayed at DisplayLoad modeAlways on Mode: The load output is always switched on.Dusk to Dawn Mode: The load output is switched on between sunset and sunrise.Evening Mode: The load output will be switched on for 2~9hours after sunset.Manual Mode: The load output can be switched on and off manually by pressingMENU shortly.1.Always on Mode When the controller is set to always On mode, no matter the charging or discharging state, the load is always powered on (except in when in protection state). 15

2. Street Lamp FunctionWhen the load is set to Dusk to Dawn or Evening mode, the voltage and the Day/Nightdelay tcan be set b IoT, RS485 or bluetooth APP, and the load can be turned on or off by the test function during the day charging process.2.1 Day/Night threshold voltageThe controller recognizes day and night based on the solar array open circuit voltage. This day/night threshold voltage can be modified according to local light conditions and the solar array used.Day/Night threshold setting range: 3.0~10.0/6.0~20.0/9.0~30.0/12.0~40.0V(Default: 8/16/24/32V)2.2 Day/Night delay timeIn the evening, when the solar array open circuit voltage reaches the setting day/night detect voltage, you can adjust the day/night delay time to make the load turn on a little bit later.Day/Night delay time setting range: 0~30min(Default: 0min)2.3 Test FunctionWhen the controller is working in Dusk to Dawn or Evening mode, press the MENU key for 3s to turn on the load. Press the MENU key again or the load turns off automatically after 1 minute. If the controller is operating in always on mode, the test function does not work.Day/Night threshold ime y1.If the controller turns off the load due to low voltage protection、overcurrent protection、short-circuit protection or over temperature protection, the load will turn on automatically when the controller recovers from protection state.2.Please note: Pushing the MENU button can still activate the function of the key, even during of the above four kinds protection states.3.User-defind Mode①MENU shortly.②The default switching state of the load in manual mode can be changed by APP. At the same time, the output to the load can be turned on or off.If the load mode is selected "USE", then you can switch on and off the load output manually by pressing IoT, RS485 or bluetooth Battery voltage is abnormal at start-upFaultsReasonTroubleshootingBattery voltage is too lowReduce the load, the controller will resume work after 1minute.After the temperature decreases, the controller will work normally.Battery voltage is too highShort CircuitOver CurrentOver temperature
Switch off all loads, remove short circuit, load will be reconnected after 1 minute automatically
Charge or discharge the battery so that the battery voltage is within the normal operating range(8.5~15.5V or 20~31V or 31~42 or 40~62V).Check if other sources overcharge the battery or battery parameter is set correctly. If not, controller is damaged.Load will be reconnected when battery is recharged.7.1Trouble shooting7, Troubleshooting, and maintenance Protections16