SR-MT Maximum Power Point Tracking Series User Manual
Contents
1. Paverage W Vaverage V average A Energy Ah Clea BEE E Basic Setting HV Curve Edit Table Mode LV Curve Edit SAS Modeing N Program Edit N File Management Path I EXPV Test SR MT2420 Test 8 V Wide range shelter in the middlexls V Scale I Scale I Mpp Test Elapsed Time There s shadow at the top left corner of PV module inu Solar Array Main Panel vi Curve Reading Chart FAW Version CHROMA ATE 62150H 600S 00435 01 31 LV Curve oats P V Curve 180 169 140 MPP Tracking Efficiency Paverage W Vaverage V laverage A Energy Wh Clear B E EE EG E Basic Setting HV Curve Edit Table Mode LV Curve Edit SAS Modeling IV Program Edit N File Management Path EAPV Test SR MT2420 Test V Wide range shelter at the top left comer xls V Scale Scale i 1 000000 y 1 000000 K Excel fie define Column stat Rowett N Data Length JE E JE 3 Simulate tree shade covered PV module Solar Array Main Panel vi Reading Chart Parameter LV Curve MPP Tracking Efficiency Paverage W Vaverage V laverage A Energy Wh Clear Run Time Pera 56 28 32617 17255 E E OB Basic Setting HV Curve Edit Table Mode LV Curve Edit SAS Modeling IV Program Edit IV File Management Path 4 E PV Test SR MT2420 Test LOW Double shade shelter xis V Scale Scale b 1 000000 y 1 000000 ves NEES v v EE Pmea 182 9 w Mpp Test Ela2. 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 IV Installation and use instruction 1 Fix the controller Fix the controller onto the surface of the specific place Keep a certain distance between the controller and fitting surface to assure heat dissipation 2 Wire preparation Adopt the wire matching the current plan the length of wire strip 5mm insulation of one side of the controller terminal and try to decrease the length of the connected wire so that a reduction in electrical loss 3 Connect to the battery connect the battery wire to the controller firstly Pay attention to the and in case of reverse connection If connected well the indicator light will be on Otherwise please check the connection If reverse connection controller will not working but not damage the controller ce 99 4 Connect to the solar panel Pay attention to the an not reverse connect If ample sunshine controller will show charging mode Or should check the connection is right or wrong If solar panel under the sunshine will produce voltage immediately If use 24V or more than 24V system the solar panel voltage will exceed to body safety voltage when use please prevent you self from electric shock Connect Load Connected the load to controller make sure the current cannot over the rated current an
3. 12V a Max P Point 100V Battery Power VS Efficiency Banery Voltage 12V 95 00 94 00 93 00 92 00 91 00 S 90 00 89 00 88 00 H 37 00 86 00 85 00 84 00 83 00 100V 13 26 39 52 65 78 91 104 117 130 143 156 169 182 195 208 221 234 247 260 Power w 2 24V system solar panel power and efficiency curve D34V to 24V Max Power Point 34V Battery Voltage 24V Battery Power VS Efficiency 96 0 95 0 94 0 93 0 92 0 91 0 mn 34V Efficiency 90 0 89 0 88 0 52 78 104 130 156 182 208 234 260 286 312 338 364 390 416 442 468 494 520 Power w 68V to 24V Max Power Point 68V Battery Voltage 24V Battery Power VS Efficiency o Y 90 0 68V 52 78 104 130 156 182 208 234 260 286 312 338 364 390 416 442 468 494 520 Power w 100V to 24V Max Power Point 100V Battery Voltage 24V Battery Power VS Efficiency w 90 0 100V 52 78 104 130 156 182 208 234 260 286 312 338 364 390 416 442 468 494 520 Power Ww 3 The MPPT tracing efficiency test under the shaded condition There s shadow in the middle of PV module amp Solar Array Main Panel vi N File VFie O Dron Fine S ieee FAN Version CHROMA ATE 62150H 600S 00435 01 31 P V Curv 2352 Curve 189 100 4 1 1 MPP Tracking MPP Test IV File No Efficiency
4. Indicating Status State of charge charge at Max Normally on Power Slow flash ight for 1s off for 1s the Boost charging cycle is 2s Single flash ight for 0 1s off for 1 9s the Float charging cycle is 2s Fast flash Cight for 0 1s off for 0 1s the cycle is 0 2s Double flash Cight for 0 1s off for 0 1s Current limited Equalizing charge reopen for O ls reclose for charging 1 7s the cycle is 2s B Battery Indication Specification Serial Indicating Status Battery Status Number Normally on The battery voltage is normal Slow flash O i The battery has been over ight for 1s off for 1s the cycle is 2s discharged Fast flash light for 0 1s off for 0 1s the cycle is 0 2s The battery is over voltage VI Load working mode specification 1 Light time control mode 1 14 When there has no sunlight the light intensity will fall to start point the controller will open the load after confirming the start signal and the load will start work the load will be closed when the working time reach at the set value The specific set value meets with the set method of load working mode 2 Manual mode 15 Under manual mode user can control the load by key no matter it is day or night This mode applies to special load or debugging 3 Debug mode 16 This mode applies to debuggin
5. The load will be on by light control and will be off after delaying for 3 hour The load will be on by light control and will be off after delaying for 4 hour The load will be on by light control and will be off after delaying for 5 hour The load will be on by light control and will be off after delaying for 6 hour The load will be on by light control and will be off after delaying for 7 hour The load will be on by light control and will be off after delaying for 8 hour The load will be on by light control and will be off after delaying for 9 hour The load will be on by light control and will be off after delaying for 10 hours The load will be on by light control and will be off after delaying for 11 hour The load will be on by light control and will be off after delaying for 12 hour The load will be on by light control and will be off after delaying for 13 hour The load will be on by light control and will be off after delaying for 14 hour Manual mode Debug mode Normally on mode 4 Fault code table Serial NBr Parameter Specification EO No fault the controller is working normally El The PV input terminal is over voltage E2 The charging current is over value E3 The PV input terminal is short circuit E4 The load is short circuit E5 The load power is over value E6 The outer ambient temperature is over value E7 The outer temperature sensor hasn t been connected or has been da
6. current Have the fault code indication it helps user confirm the system fault It can connect with LCD screen monitoring and the controller parameters is amendable Various load control methods to improve the system s flexibility With temperature compensation function to adjust the charge and discharge parameters automatically which could improve the life of the battery Various system protection function Including over charge over discharge over load over heat the battery reverse connection protection and so on IT MPPT charging algorithm Instruction The 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 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 is charging while the highest voltage of the solar panel is about 17V so it 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
7. rated power please reduce the electric equipment it will recover the next day or after pressing the key for a lone time The charging loop of fault code E6 and E8 are normal but there is no charge The controller is overheated it will recover when the temperature is lower Fault code E7 The outer temperature sensor is unconnected or damaged check if the connection is correct Fault code E9 The inside temperature sensor is unconnected or damaged the inside over temperature protection will not work if it does some effect to normally use please find after sale service Other abnormalities Please check if the wiring is reliable or the auto identify of 12V 24V is correct XI Parameters Parameter Value System voltage 12V 24V Auto Rated load current 20A Rated charging current 20A Max input power of PV system 260W 12V 520W 24V No load loss lt IS5mA Max input voltage of solar panel lt 150V Transfer efficiency lt 97 MPPT tracing efficiency gt 99 Over voltage protection 16 5V x2 24V Limited value when charging 15 5V x2 24V Equalizing charging voltage 15 2V x2 24V 25 C Equalizing charging interval 30 days Boost charging voltage 14 4V x2 24V 25 C Float charging voltage 13 8V x2 24V 25 C Return voltage when over discharge 12 5V x2 24V Over discharge voltage 11 0V x2 24V Boo
8. SR MT Maximum Power Point Tracking Series Solar charge controller User Manual MPPT Solar Charge Controller CHARGE STATUS Specification Model SR MT2420 Battery Voltage 12V 24V Charging Current 20A Discharge Current 20A Max Power of Solar Panel 260W 12V 520W 24V Max Voltage of Solar Panel 150V Dear users Thank you very much for choosing our products Please read the manual carefully before using our controllers I Feature 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 turns up in I V curve the controller can still trace the Max Power point Built in maximum power point tracking algorithm which could promote the energy utilization efficiency of pv system The charging efficiency is 15 20 higher than PWM mode Adopting sorts of tracking algorithm to track the best working point of the I V curve promptly and accurately the MPPT efficiency could reach up to 99 9 Adopting advanced digital power supply technology which make the energy conversion efficiency reach up to 97 Four stage charging mode MPPT equalizing charge boost voltagte charge floating charge With current limiting charging mode when the power of solar panel is oversized and charging current exceeds the rated current the controller will lower charging power which enable the system to work under the rated charging
9. charging 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 X Abnormalities and solutions Abnormalities Solutions Sunny day without charging Please check if the solar panel connection is correct indication or the contact is reliable The battery indicating The battery voltage is over value please check if the lightflashes quickly no connection is reliable or if the voltage is over value output The battery indicating light flashes slowly without load output The battery is over discharge it will recover if charging to full voltage All the indicating light is off Battery power supply fault please check if the connection is correct Fault code E1 The input voltage of PV terminal is over value please check if the PV parameter is matched charging will be recovered if the voltage become lower Fault code E2 The power of PV input terminal is over value check if the PV power parameter is matched Fault code E3 there is no The PV input terminal maybe has been short circuit check out if it is right charge Fault code E4 The load is short circuit after the fault been debugged it will recover the next day or after pressing the key for a long time Fault code E5 The load power exceeds
10. d notice the positive and negative electrode Prevent the system from reverse connect Installation image 180 7mm MPPT Solar Charge Controller CHARGE STATUS J SS pny ay KD te _ E5 SUL LULU Omm 115mm V Controller image Charge lamp Battery lamp MPPT Solar CHARGE STATUS i C F _F LJ LJ acceptance FLOAT _JUUUUUUUL Eauauze CURRENT LIMITED LED display VI Working state indication 1 Charge indication 4 LED light flashing cycle when the solar panel output voltage reaches a certain value 2 Battery capacity indication When no charging LED1 LED4 indicates battery capacity approximation 3 Mode indicating light when the mode indicating light is on it indicates that the LED displaying value is under controller mode the light will be off if no keys operation within 5s 4 Fault indicating light when the fault indication light is on it indicates that the LED displaying value is controller fault code the light will be off if no keys operation within 5s if fault exists the indicating light will flash A Charging status indication specification Chase at Max Bowel Normally on CHARGE STATUS Boost charging slowly flash BUL I LI LI acceptance Float charging single 2 flash N N fN Foa a JU e EQUALIZE _ Current limited MONIN CURRENT LIMITED ____ charging double flash Serial Number
11. g the load will be shut when receiving light signal and it will be on without light signal The debug mode is easy to examine the validity of the system 4 Normally on mode 17 Under this mode the load will be normally on this mode is fit for the load which requires 24 hours power supply Vil Operating instruction 1 Mode and fault code skim When the system is working normally the LED has no display after press the key the LED will be on at the same time the mode or fault indicating light will be on If the mode indicating light is on it indicates that the LED displaying value is load working mode of the controller if the fault indicating light is on it indicates that the LED displaying value is fault code The controller working mode and fault code is as the form below 2 Mode adjusting When press the button over 3s LED1 LED4 start flashing press the button again state of LED will be changed According to the number displayed in LED can calculate the mode value please stop press the button when you adjusted the mode you want Wait for 10s setting mode quit auto or press the button over 3s setting mode quit 3 Mode working table Serial number 10 11 12 13 14 15 16 17 Parameter Specification Pure light control The load will be on by light control and will be off after delaying for 1 hour The load will be on by light control and will be off after delaying for 2 hour
12. maged E8 There is over temperature inside the controller E9 The inside temperature sensor hasn t been connected or has been damaged Attention if no key operation within 5s the LED will be shut or if there exist some fault the fault indicating light will flash all the time until the fault has been removed IX Protect function 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 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 dis
13. psed Time Auto Refresh N Run Vmea 32 617 Be v BEEZ Mpp Test Elapsed Time N Run There s wide range shadow at PV module ma Solar Array Main Panel vi W Dynamic Mk MPPT Test Reading Chart Parameter LV Curve 1 1651 MEO 1063 Mpp Test Elapsed Time Auto Refresh N Run MPP Tracking Efficiency Paverage W Vaverage V average A Energy Wh Clear Z 1 Sec v Cor w ES EE TE ES ES Basic Setting HV Curve Edit Table Mode LY Curve Edit SAS Modeling N Program Edit N File Management Path ENPV Test SR MT2420 Test 36V 8 V Wide range shadow sheltered gradually xis V Scale Scale i J 1 000000 1 000000 Gece file define Column start Row start
14. st charging time 2 hours Equalizing charging time 1 hour Temperature compensation 4 0mv C 2V Over temperature protection Yes Light operated open voltage 5V Light operated close voltage 6V Light operated delay time Smin Working temperature 35C 65C IP level IP32 Weight 1 18kg Max wiring dimension 12mm Altitude lt 3000m Dimension 180 7x115x 72 mm LxWxH Installation dimension 175 7x70 mm XII Typical Efficiency Diagram 1 12V system solar panel power and efficiency curve I17V to 12V Battery Power VS Efficiency Max PowerPoint 17V Battery Voltage 12V 97 0 96 0 95 0 Poaox xe 93 0 ka 92 0 17V 91 0 90 0 89 0 13 26 39 52 65 78 91 104 117 130 143 156 169 182 195 208 221 234 247 260 Power w 34V to 12V Battery Power VS Efficiency Max Power Point 34V Battery Voltage 12V 96 0 95 0 94 0 27 93 0 92 0 E 91 0 90 0 89 0 88 0 87 0 34 13 26 39 52 65 78 91 104 117 130 143 156 169 182 195 208 221 234 247 260 Power w 68V to 12V Max Pi Point 68V Battery Power VS Efficiency garen voltage 12V 96 00 95 00 94 00 93 00 92 00 91 00 S 90 00 89 00 68V 88 00 87 00 86 00 85 00 le Effic 13 26 39 52 65 78 91 104 117 130 143 156 169 182 195 208 221 234 247 260 Power W 100V to
15. 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 Working point of the general controller Current Maximum power point 12 0V 17 5V 22 0 Voltage As a charging stage MPPT can t be used alone It must be combined with ascending charge floating charge equalizing charge to complete the battery charge The controller will judge the battery s voltage before working If the battery voltage is higher than 13 2V 2 24V the controller will judge the battery working as full charge state then the controller will enter into floating charge stage but not equalizing charge or charge hint When the battery s initial charging voltage below 13 2V 2 24V the charging process is MPPT equalizing charge boost voltage charge floating charge The course of equalizing charge is 1 hour ascending charge is 2 hour and equalizing charge interval is 30 days Charging curve as below Volt Current Equal charging 1h Battery voltage full Battery voltage underfull Charging current ee ene Boost charging 2h 13 8V Edm ee a Float charging until dark Voltage 12 0V 5 Current 1 5A 100AH MPPT charging Equal boost Float charging stage charging stage Dawn Daytime Night III Usage suggestion 1 The controller will identify the ba
16. ttery 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 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 is 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
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