SR-MT4845 - Solar Charge Controller
Contents
1. y Light reduced the Ocv decreases lt lt Temperature increase Ocv reduce As a charging stage MPPT charging can t work alone it should combine with boost charging float charging and equalizing charging When the controller works it will identify the battery voltage if the voltage exceeds 13 2 x2 24V V it will enter float charging directly without equalizing charging or boost charging If the battery charging voltage is lower than 13 2V x2 24V the charging process is MPPT equalizing charging boost charging float charging the equalizing charging time is 1h boost charging time is 2h equalizing charging interval is 30 days the charging curve is as follows Battery voltage not full Battery voltage full UM Equalizing charge ART A T Boost charge MPPT charge Float charge till nigt T Day Dawn Daytime Nighttime V Connection 1 For one machine operation ft om 7 7 7 l E CAs z 7 EN LT C A a PV PV BAT T RM i S N Switch Switch 5 0 fi 2 N 6 Storage Battery Ne A 2 For parallel operation E 7 E N Groups of Solar Panels Main Engine Slave 1 n Slave n coco di I I Switch Switch Sw2. 0 1s reclose for 1 7s the cycle is 2s 3 Battery indication Normally on The voltage 1s normal Slow flash light for Is off for Is the span is 2s It is over discharge Fast flash light for 0 1s off for 0 1s the cycle is 0 2s It is over voltage 4 Cooling fin Provide heat dissipation for the controller 5 LCD display and keys operation The display section have two stage menu there are main menu and side menu the main manu has three items each item has its side menu the second side menu is parameter setting menu the others are parameter viewing menu It has 4 independent function keys from left to right is a E O dai key the function of O key 1s to return to previous menu or return to last status the function of O oe key 19 to select or set parameters the function of key 19 to enter into next menu or enter into parameter setting or confirm the parameters More details please check SR RM 2 parts specification A Homepage menu comparison table System configuration System Configuration M System Data is the menu to examine the system status the detail displaying status items please check menu table 11 System Configuration is the menu to set system running parameters the detail parameters please check menu table 12 Product Info is the menu to examine equipment info the detail info please check menu table 13 B Sy
3. Short circuit protection of PV input terminal Load short circuit will not damage the controller but controller will stop output 6 Over load protection When the load current exceed 1 25 or 1 5 time of rated current and last for 10s 5s the load will stop output 7 Load short circuit protection When the load is short circuit controller will stop output without any damage 8 Solar panel reverses connection protection The reverse connection of solar panel won t do any damage to the system 9 Reverse charging protection at night Prevent the battery from discharging through solar panel at night 10 TVS lightning protection 11 Over temperature protection When inside temperature of the controller is over value the controller will lower charging power or stop charging XI Fault code Abnormal communication of RS485 XI Parameters Marks n represents x2 24V x3 36V x4 48V Model SRMTASGO srmrasas System voltage RRA Vamo o Nowa owam o o Max mpat voltage o sv o o Rated charging current 604 sa oO 800W 12V 600W 12V Max Input power 1600W 24V 1200W 24V 2400W 36V 1800W 36V 3200W 48V 2400W 48V ICO O MPT tracingeffiieney gt o o Overvoltageprotecton TEVE IVY Limited charge voltage Taa ON ass 12 6V Over discharge return 12 0V 13 0V xnV voltage Over discharge voltage osv isv av O Boostchargetime mom o VN o mo Equalizing chargetime mo NV o mo Temperature c
4. of the MPPT is maximum power point tracking It is an advanced charging way which could detect the real time power of the solar panel and the maximum point of the I V curve that make the highest battery charging efficiency 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 MPPT controller s energy utilization efficiency is 15 20 higher than PWM controller The voltage of the solar panel is about 12V when General controller 1s charging while the highest voltage of the solar panel 1s about 17V so 1t doesn t play the largest power of the solar panel MPPT controller overcome this problem by adjusting the input current and voltage constantly to realize the largest input power Meanwhile the maximum power point will change due to the surrounding temperature and sunshine condition MPPT controller will adjust the parameter constantly according to different conditions to make the system working in the largest power point I A MPPT Point Pwm charge 0 0 U V 0 0 2 8 5 6 8 4 11 2 14 0 16 8 19 6 MPPT controller will adjust the parameters constantly according to different conditions to make the system working in the largest power point I A 20 C 30 C 40 C 50 C current stabilize 60 C power increase TOC Temperature of solar pannel U Y Temperature reduce
5. ventilated and heat dissipated environment due to the controller will fever during operation 4 The controller will detect the surrounding temperature to compensate the battery charging voltage so ensure the controller and battery is in the same environment 5 Choosing the proper cable with enough capacity to avoid redundant power loss in the circuit Too much circuit loss may lead to wrong judgment 6 Full charge is very important for the battery The battery should be full charged at least once a month or the battery will suffer permanent damage The battery can be full charged only when the input power of the battery is more than power consumption of the load 7 Please do not dip the controller into the corrosive liquid or the controller will be damaged and release harmful gas 8 The solar panel s terminal voltage may exceed human safety voltage when connect 24V system when manipulation 19 needed please use insulating tools and ensure the hands dry 9 Because the battery store lots of energy do not allow the battery short circuit in any case We suggest tandem connect a fuse on the battery 10 The battery may release combustible gas please far away from the spark 11 Ensure the children are far away from battery and controller 12 Please abide by the battery manufacturer s safety suggestion VI Networking introduction The controller supports parallel operation before working please set different addresses for each controlle
6. SR MT Maximum Power Point Tracking Series Solar charge controller User Manual Specification Battery voltage 12V 24V 36V 48V 12V 24V 36V 48V Charging current ASA 60A Max voltage of solar panel 150V 150V Dear users Thank you very much for choosing our products Please read the manual carefully before using our controllers I Safety Attention The input voltage is high so please read the instruction before operation and please do not operate the controller before training L La Warning The symbol means the operation 1s dangerous please surely get safety prepared before operations 0 Attention The symbol means the operation 1s destructiveness 3 M Reminder The symbol means the suggestions and hints to the operator II Features 1 Can be used in all kinds of bad environment with Aluminum frame 2 Double crest or multi crest tracing technique design when the solar panel is under shadow or part of the solar panel is damaged multi crest will turn up in I V curve and the controller can still trace the Max Power Point 3 Built 1n maximum power point tracking algorithm which could promote energy utilization efficiency of pv system The charging efficiency 1s 15 20 higher than PWM mode 4 Adopting sorts of tracking algorithm to track the best working point of I V curve promptly and accurately the MPPT efficiency could reach to 99 9 5 The use of advanced digital power technology circuit energy c
7. current density of 4A Imm please make sure the wiring is correct ty Do not reverse connect the wire leave an air switch between battery and controller or between solar panel and controller open the battery air switch after completion of above job and then open the solar panel air switch The installation site is suggested to be aeration drying start the slave first if it is main engine please set it as slave Ensure that the system is run by one main engine and start it in the end X Environmental requirements 1 Working ambient temperature range 35 C 45 C 2 Storage temperature range 35 LC 80 3 Humidity range 10 90 without moisture condensation 4 Protection level IP32 A Do not use under flammable and explosive condition never put the controller in moist rainy dusty corrosion or electromagnetic interference condition A Self maintenance 15 prohibited XI Protections 1 Waterproof protection Waterproof degree IP32 2 Input power limit protection When the PV power exceeds the rated power controller will limit the PV power under the value of rated power so as to prevent the controller from being damaged 3 Battery reverse connection protection Battery reverse connection will not damage the controller but the system will stop working 4 The voltage of PV input terminal is over value When the voltage of PV input terminal is over value controller will shut the PV input automatically 5
8. itch Switch IC D Storage Battery 1 Solar panel The power for battery charging 2 Controller Central nervous of the system which controls the overall system 3 RS485 Telecommunication cable Communication line of the controller which is necessary for parallel operation 4 PC It can realize info exchange with the controller by RS232 and can monitor the system timely 5 Open space It can insure the safety of operators the switching element is optional 6 Battery A battery pack which compose of battery in series or in parallel 7 LCD display The LCD can display the system status parameters records and the set value a LCD or a PC can realize the operation IV Panel introduction Install The Hook Install The Hook Cooling Fin Charge Indicator Battery Indicator LCD Return Button Confirm Button 1 Fix the hooks Used for the installation of the controller 2 Charging indication CHARGE STATUS JULIUS dN Double flash current limiting charge Normally on Charging at Max Power Slow flash light for 1s off for Is the cycle is 2s Boost charging Single flash light for 0 1s off for 1 9s the cycle is 2s Float charging Fast flash light for 0 1s off for 0 1s the cycle is Equalizing charge 0 25 Double flash light for 0 1s off for 0 1s reopen for Current limited charging
9. ompensation 2050 mVICAV v s Over temperature Yes Light controlled open SV Light controlled delay time mm Do po Working temperate seza o o Proteome ra o Max Wiring dimension Sm o mae E S Product dimension o o L L L L L j L L L Mounting dimension 289 170 128 259 170 128 mm mm 1 Dimension 128 7 gt O side view Bottom view ae is Planform Li e k _ 150 as Upward view 1 1 s Right side view par Tip up sp A 130 ___ t yV _A l B p Front view Lol gt a S s AR 34 YY
10. onversion efficiency 1s as high as 98 6 Four stage charging order mode MPPT equalizing charging boost charging float charging 7 With current limiting charging mode when the power of solar panel is over sized and charging current exceeds the rated current the controller will lower the charging power which enables the system to work under the rated charging current 8 It can communicate with PC by communication wires and cables read or set controller s running parameters and monitor the system operation status 9 The controller can realize networking operation by the link with telecommunication cable 10 Have the fault code indication 1t helps users confirm the system fault 11 12V 24V 36V 48V auto identified 12 Support data storage the storage span can reach 5 years 13 It can connect with LCD screen monitoring and the controller parameters are amendable 14 Built in temperature sensor when the temperature exceeds the set value the charging current will lower down followed by the decrease of temperature so as to control the controller s temperature rise 15 With temperature compensation function to adjust the charge and discharge parameters automatically which can improve battery service life 16 Various system protection functions Including over charge over discharge over load over heat the battery reverses connection protection and so on 17 TVS lighting protection I Charging introduction The full name
11. r the controller s factory default is slave engine and it can be customized into main engine More details please check SR RM 2 parts specification VII PC monitoring The controller can communicate with PC 1 Firstly connect the enclosure USB 232 wire with controller and PC 2 Install USB 232 drive by use of the enclosure CD 3 Open the upper computer software select the port and click to link If connect succeed 1t means that the controller has set up communication with the PC 1f not please check the port IX Installation instructions 1 Loosen the four screws and open the panel picture 1 2 Cross the side plate by use of suitable energize wire rod and telecommunication cable picture 2 3 Fix the wire rod successively to controllers inside wiring terminal picture 3 4 Close the panel after connecting the LCD and telecommunication cable parallel operation is needed and then tighten the screws 5 Fix the controller at the installation place picture 4 6 Power on or OO0 CO OOO OC P PV BAT BAT Picture 1 Picture 2 BAT BAT PV PV RS485 Bat voltage RS239 sensor Temperature sensor Picture 3 Picture 4 La Battery short circuit is prohibited do not touch the solar panel or the bare port of battery wiring A Choose the cable do not exceed the
12. stem submenu comparison table charging current 30 94 ON 7 battery capacity SoC 100 in H A charging capacity WH 999WH discharging capacity WH OW H 0 10 12 13 15 16 M The submenu of the system can check the current running parameters such as battery voltage charge discharge current charging capacity AH 999AH and fault code and so on 1t does good to system maintenance C System configuration submenu comparison table D V v R l W V ov CL EC BC LV UV LD charging limited voltage 15 5 16 0V y 2 equaling charge interval EQV Inv temperature compensation coefficient TEMP Com ES 15 light control voltage L CON V 5 11V 16 controller address Address Y The configurable items and configuring range of system configuration submenu are as the above table please operate 1 3 5 N cautiously when setting the parameters to insure the proper operation of the system D Product info submenu comparison table NA Product info submenu which displays the model hardware version software version and serial number VT Instructions 1 The controller will identify the battery voltage automatically Please connect the battery first and ensure the connection is reliable 2 MPPT controller is designed according to solar panel s I V curve so when the controller connect the general constant voltage DC source the controller may not work 3 Advice is installed in the
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