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).