eMPPT30 series - YSmart Technology Co.,Ltd
Contents
1. For 12V Model For 24V system For 48V system system f two in series four in series STP140D 12 TEA N in parallel N in parallel N in parallel two in series four in series MS140GG 02 N in parallel N in parallel N in parallel two in series STP190S 24 Ad N in parallel N in parallel N in parallel two in series NS F130G5 N in parallel N in parallel N in parallel N means the quantity number required by the current Table3 3 Solar panels model and system configuration solution 3 3 Wiring The maximum input and output current of eMPPT30 is 30A To ensure the cable temperature does not exceed the safety range the copper cable s area must be gt 6mm2 In reality application users can choose the appropriate cables according to the system voltage permitted cable temperature cable voltage drop and also cable material We suggest customer to control the maximum battery voltage loss under 1 5 and control the maximum voltage loss of solar panels under 2 5 The following is the distance between controller and battery and the suggested copper cables Suggested Voltage Loss Battery Voltage Loss Suggested Distance Cable at 30A Cable 12V 24V 48V Number One pair 1m 6mm 9 AWG 0 18V 1 5 0 75 0 35 2m 10mm 7 AWG 0 22V 1 8 0 9 0 45 4m 16mm 5 AWG 0 26V 2 2 1 1 0 55 Table3 4 Distance amp Cable Voltage Drop The followin2. 5 2 LCD main page Add No 30 XinFeng Road Potoubei Village Ailiary fown Longgang Dist Shenzhen 51872 P R China YSMART TECHNOLOGY CO LTD website www ysmart tech com Phone 86 755 85232255 5 4 3 2 B a a R i xX Fi KD als Figure5 1 LCD main page It means there are 5 pages and now it is the first interface It means controller has internal breakdown It means the controller detects breakdown and it will prompt to the users And please refer the disposal to chapter 6 It means the controller is in sleep state if this icon appears Means the current charging stages MPPT means it is in Bulk charging stage ABSB means it is in Absorption charging stage FLAT means it is in Float charging stage CLTD means the solar panels power is too big and the controller starts to limit the current w N A Ul It means the current solar panels voltage It means the current battery array is 24V and the battery voltage is 26 1V It means the total charging current for battery is 27 1A It means the accumulative charging AH is 13120AH It means the environmental temperature of controller is 25 C DIt means the charging power from controller to battery is 707W oOo on OQ gt gt 5 3 Battery parameters viewing Battery parameters will be showed at the first page of the main page It includes the parameters as battery voltage charging current charging state en
3. 4 mm yellow and green lines to connect the grounding terminal of the controller to the ground bus of the system This can decrease the electromagnetic interface in a certain value 3 7 System expansion If users want to deploy bigger system you can expand the system by paralleling several sets of controller More controllers can share one battery group but one controller must be connected with one independent solar panels array Add No 30 XinFeng Road Potoubei Village AiliangTown Longgang Dist Shenzhen 51872 P R China YSMART TECHNOLOGY CO LTD website www ysmart tech com Phone 86 755 85232255 4 Installation 4 1 Product dimension 358 386 O U l p r Bil t 9 ak l p 100 Figure4 1 Product dimension Mounting hole pitch 100mm 358mm Mounting hole diameter 6mm Height Width Thickness 386mm 150mm 100mm Connecting Terminals M6 Add No 30 XinFeng Road Potoubei Village AiliangTown Longgang Dist Shenzhen 51872 P R China YSMART TECHNOLOGY CO LTD 4 2 System wiring diagram QO eea a aa 0 Ly LW eMPPT30 Panels Controller absorption OO OG D000 o0 OH bs e UC Pk i Communication Lightning j Port surge empera ture sensor Figure4 2 System wiring diagram 4 3 Wiring A 4 4
4. Village Ailian Fown Longgang Dist Shenzhen 51872 P R China YSMART TECHNOLOGY CO LTD website www ysmart tech com Phone 86 755 85232255 6 2 Common breakdown phenomena and disposal Breakdown Phenomena Possible Breakdown Reasons Disposal No showing on LCD Battery polarity connection reverse Check whether the connecting polarity of the battery is right Showing voltage on LCD does not coincide with the actual voltage Controller in hibernation state slow data updating Press any button to wake up the controller Charging voltage fluctuate fast Controller and inverter share the cables Separate the cables for the controller and inverter Environmental temperature shows Did not connect the temperature sensor Insert the temperature sensor into the hole is the button of the controller Controller in direct charging state The maximum power point of solar panels too low Do not affect using Connect more solar panels in series to improve the working point of solar panels Add No 30 XinFeng Road Potoubei Village Ailian Fown Longgang Dist Shenzhen 51872 P R China YSMART TECHNOLOGY CO LTD 7 Technical Specifications website www ysmart tech com Phone 86 755 85232255 MODEL eMPPT3024Z eMPPT3048 Input Volt R ne lt 70V lt 130V of Solar Panels Maxi P P
5. on controller by cables and fasten the screws connect the solar panels array with the sola panel terminal on controller by cables and fasten the screws Connect the grounding terminal on the controller to the ground bus of the system Insert the incidental temperature sensor into the pole on the button of the controller If you have choose to install RS232 remote monitoring function you can connect the computer or remote monitor with the computer communication port on the controller After getting through the over current breaker or fuse of the battery please check the LCD screen at this time the LCD should show the battery voltage info LCD showing normally means the connecting is right and you can go to the next step Otherwise refer to chapter 6 for disposal After getting though the over current breaker or fuse of the solar panels check LCD screen and controller will show the current voltage of the solar panels array If the solar panels array voltage is higher than battery voltage controller will start maximum power point tracking and the solar panels array voltage begins to drop If the controller is at sleep state press any button to wake up the controller Suggest you stall the controller on the vertical surface and make sure there are space about 10cm around the controller to make better cooling Suggest you save 20cm on the bottom of the controller to make the connection of cables convenient Add No 30 XinFeng Road Poto
6. the input of solar panels When the power of solar panels is too big eMPPT controller will deviate from the maximum power point to limit the output current to prevent the controller being damaged 2 3 MPPT technology introduction Solar panels are nonlinear materials and the output power is mainly affected by lighting intensity solar panels temperature and load impedance When the lighting intensity and solar panels temperature is fixed the output power of solar panels is only affected by load impedance Different load impedance will make the solar panels work at different point and put out the different power The following figure will mark the four working points A B C D and the working point features as follows Working point D Output voltage is 22 3V output power is OW This point is the open circuit point of solar panels Working point C Output voltage is OV output power is OW This point is the short circuit working point of solar panels Working point A Output voltage is 13V output power is 74W This working point is the state when using normal controller and the solar panels voltage is clamped to 13V by battery Working point B Output voltage 17 6V output power 92W This point is the state when using MPPT controller Because of using power conversion technology the solar panels voltage is not clamped by battery Add No 30 XinFeng Road Potoubei Village AiliangTown Longgang Dist Shenzhen 51872 P R China YSMART T
7. the solar panels working point intelligently in order to make the solar panels output its maximum power When the circumstances change the working point of solar panels deviate from the maximum power point MCU will adjust the solar panels working point based on MPPT calculation to make the solar panels back to the maximum power point again refer to 2 3 about MPPT technology introduction Compared with PWM controller eMPPT controller can increase the output of solar panels by 5 30 The output increasing proportion is affected by the factors such as solar panels property humidity and light intensity At the LCD interface this product adopts in big LCD screen lattice to show the parameters and states using vivid icon to show individual parameters The controller uses 4 buttons to realize interfaces shifting and parameter setting The LCD screen is simple and concise and the whole machine wall mount installing refer to chapter 4 1 Nylon terminal makes the wiring area bigger and wiring loss less 2 2 Functions 1 Maximum power point tracking function Use Buck conversion circuit and MCU technology to track the maximum power point to realize the maximum output of solar panels in different light intensity and temperature and this can gain more value for customers Add No 30 XinFeng Road Potoubei Village Ailianj Town Longgang Dist Shenzhen 51872 P R China YSMART TECHNOLOGY CO LTD website www ysmart tech com Phone 86 755 85232255 2 Cha
8. Choose the appropriate cables requested as chapter 3 Choose the appropriate connections e g Copper cable lugs 6mm 2 6 see Figure4 3 based on the cross sectional area Prepare 3 sets of M6 screw used to fix the controller on the wall ot website www ysmart tech com Phone 86 755 85232255 Batteries other vertical things Figure4 3 Copper cable lugs Prepare cutting pliers and hydraulic clamps used to press the Copper cable lugs Copper cable lugs screwdriver wrench and multimeter etc Installing process Note Please turn off the breakers of battery solar panels array before installing the controller Do not touch the positive and negative pole of solar panels or battery at the same time when installing otherwise you have the risk of electrical shock Add No 30 XinFeng Road Potoubei Village Ailiany fpwn Longgang Dist Shenzhen 51872 P R China YSMART TECHNOLOGY CO LTD website www ysmart tech com Phone 86 755 85232255 A 2 I Note Check whether the battery voltage and solar panels array voltage is within the requested range Open the over current breaker or fuse of the battery and solar panels array Use crimping to press the Copper cable lugs to the cables Make sure laminated is matchable with the cables and the Copper cable lugs is matchable with the cables otherwise it will have the risk of over hot Connect the battery with the battery terminal
9. ECHNOLOGY CO LTD website www ysmart tech com and still works at maximum power point Compare working point A amp B it is easy to find using MPPT controller can increase the using efficiency of solar panels Compared to normal controller eMPPT controller can generate more power 100 90 80 70 60 50 40 30 20 10 Phone 86 755 85232255 I A 6 0 4 6 8 10 12 14 16 18 20 22 Figure3 1 Voltage Current Cure P W A B C D 0 6 8 10 12 14 16 18 20 200 Figure3 2 Voltage Power Cure MPPT means maximum power point tracking It makes the solar panels work at maximum point ext Point B by using power conversion technology eMPPT is the new charge controller researched and developed by our company and it uses the MCU to track the maximum power point of solar panels intelligently to generate more power from the solar panels Add No 30 XinFeng Road Potoubei Village AiliansTown Longgang Dist Shenzhen 51872 P R China YSMART TECHNOLOGY CO LTD website www ysmart tech com Phone 86 755 85232255 3 System planning 3 1 System voltage The common system voltage of solar DC system have 3 types 12V 24V and 48V The higher the system voltage the more power the system can handle In reality application users should consider the load power and th
10. YSMART TECHNOLOGY CO LTD website www ysmart tech com Phone 86 755 85232255 eMPPT30 series solar charge controller User s Manual Please read this carefully before you use it YSMART TECHNOLOGY CO LTD website www ysmart tech com Phone 86 755 85232255 Contents 1 Safety precautions 2 cc caii cece A ice tai 1 2 eMPPT series controller introductiOn aa 1 21 Feature Seerne A a a TAT R a ETE 1 22 FUNCIONS aaa hacia aes 1 2 3 MPPT technology introductiOn aa 4 3 system planning nn nn nn a a Ai Bandi 6 3 1 System voltage aaa 6 3 2 Solar panels configuration maaa 6 3 3 WINING cniinne nein A AN idl Ghee eee 7 3 4 Over Current protectiOn maa 8 3 5 Lghtning protection aa 8 3 6 Grounding 3 0 2 c0e08 Si cce ceo AAA E EE a 8 3 7 System Expansion aaae E a eooo eee eoero 8 4 Installation AA AA a 9 4 1 Product dimensiOn aaa S 9 4 2 System wiring diaQraM aa 10 4 3 Wiring DX E A S SS e O 10 44 Instalinggrosessh D SA S D e R 10 Di Operation AAA A ee EA E A 12 5 1 Button function aaa 12 5 2 LCD mainpage nn ranne ennai 12 5 3 Battery parameters vieWINQ aan 13 5 4 View and cl
11. and prescribe 18 months as the warranty period We need to charge beyond the warranty period The controller can be repaired for life no matter when and where you use it 8 3 If the controller is damaged by the following causes we need to charge even if it is in the guarantee period e Do not operate according to the user s manual eUse the controller under the condition which is beyond the using standard and technical requirements e Repair by yourself or reform by yourself eThe inappropriate environmental condition which can cause the breakdown and aging of the apparatus e Improper carrying or storage e Regarding to the service of replacement returning and repairing you need to retreat the product to our company and we decide whether to replace or repair after we make clear who should be responsible 8 4 We will not note if there is any change of this product Add No 30 XinFeng Road Potoubei Village Ailiany Sown Longgang Dist Shenzhen 51872 P R China
12. bsorption charging voltage within a certain scope And the default value is 14 4V for 12V battery Add No 30 XinFeng Road Potoubei Village AilianyTown Longgang Dist Shenzhen 51872 P R China YSMART TECHNOLOGY CO LTD website www ysmart tech com Phone 86 755 85232255 4 Temperature compensation for charging voltage eMPPT will compensate the setting Float charging voltage and Absorption charging voltage by 4mV Cell C based on the current battery temperature For 12V battery the compensated voltage U t 25 6 0 004 V For 24V battery the compensated voltage U t 25 12 0 004 V For 48V battery the compensated voltage U t 25 24 0 004 V 5 Temperature controlling fan eMPPT controller will detect the temperature of internal power module When the module temperature exceeds a certain value the controller will turn on the fan to take away the heat It will turn off the fan when the temperature decreases to a certain value 6 In night to sleep When controller detects the voltage of the solar panels is lower than the battery voltage it will turn off part of the internal circuit to decrease the standby loss At sleep state controller will wake up every 4 mins to detect the solar panels voltage and refresh the LCD data so controller refreshes the data slowly at sleep state If users need to check the current data you can press any button to wake up the controller If user haven t press any button within 1 min and the solar panels
13. e voltage scope permitted by load and then confirms which system voltage you should use The power range for each system voltage is as follows System voltage Suggested power range 12V lt 800W 24V lt 2000W 48V lt 6000W Table3 1 System voltage and suggested power 3 2 Solar panels configuration eMPPT series controller can be connected with mono solar panels and also thin film solar panels When making the system make sure the open circuit voltage of solar panels array is not higher than the maximum voltage permitted by the controller Chart one is to introduce the models of mono solar panels and thin film panels and their parameters Chart 2 is the configuration solution for 12V 24V and 48V system for solar panels Model Category Pmax Voc Isc Vpmax Ipmax stp140p 12 TEA Monoctystalline Low 224v 8 334 17 6v 7 954 Module Thin film MS140GG 02 140W 29 0v 7 124 23 0V 6 52A Module M talli STP1908 24 Ad OTYSTANINE soo 45 2v 5 650 36 6V 5 2A Module Thin film NS F130G5 130W 60 4V 3 414 46 1V 2 82A Module The above parameters are for condition of 25 C AM1 5 spectrum and 1000W m lighting intensity Table3 2 Solar panels Model and Parameters Add No 30 XinFeng Road Potoubei Village Ailiangfown Longgang Dist Shenzhen 51872 P R China YSMART TECHNOLOGY CO LTD website www ysmart tech com Phone 86 755 85232255
14. earing of PV generating data 13 5 5 View and setting for Absorption charging voltage 14 5 6 View and setting for float charging voltage 14 5 7 View and setting for Language ma aaa 14 5 8 View and setting Controller communication numbev 14 5 9 Parameters to the factory default value 15 6 Troubleshooting nn Kn AAA nn Gebietes dens 16 6 1 Error code meaning and diSsposaAl a 16 6 2 Common breakdown phenomena and disposal 17 7 Technical SpecificatiOnsS aaa 18 8 Quality ASSUPAN CE ccc ea ea a ee anakan 19 YSMART TECHNOLOGY CO LTD website www ysmart tech com Phone 86 755 85232255 1 Safety precautions Avoid any inflammable and explosive gases corrosive gases dust place when installing the controller 2 Avoid installing the controller directly under sunshine or rain 3 Please do not insert any object into the controller or spill liquid to the controller 4 Do not open or fix the controller by yourself 5 Do not touch the metal part on the controller when the system is working 2 eMPPT series controller introduction 2 1 Features eMPPT main topology adopts in Buck conversion circuit and uses MCU to adjust
15. g is the distance between solar panels and controller and also the suggested copper cables Add No 30 XinFeng Road Potoubei Village Ailiar7Town Longgang Dist Shenzhen 51872 P R China YSMART TECHNOLOGY CO LTD website www ysmart tech com Phone 86 755 85232255 Suggested Voltage Loss Solar Panels Suggested Distance a Cable at 30A Voltage Loss able Number One pair 17V 34V 68V 2m 6mm 9 AWG 0 35V 2 1 1 03 0 5 4m 10mm 7 AWG 0 42V 2 5 1 25 0 63 8m 16mm 5 AWG 0 53V 3 1 1 55 0 77 Table3 5 Distance amp Cable Voltage Drop 3 4 Over current protection The electrical equipment used in power circuit must be equipped with over current and short circuit protection devices and there is no exception for eMPPT controller eMPPT controller adopts in the design of sharing positive pole inside We suggest users to install over current breaker or fuse on the negative loop of solar panels input and also the negative loop of battery output The capacity of over current breaker or fuse is 1 25 times of the rated current 3 5 Lightning protection It is the same as other electrical devices that eMPPT controller will be damaged by lightning eMPPT controller has limited surge absorption capacity We strongly suggest users to install lightning surge absorption devices to increase the reliability of the system 3 6 Grounding eMPPT controller has protection grounding terminal Use
16. oint 12V 70V 12V Input animam ower Poin OV 48 130V Tracking Range 24V 70V 24V Input Route 1 channel 1 channel Nominal t eee 12V 24V Auto 48V Voltage Maxi Chargi aximum Charging 30A 30A Current Self Consumption lt 40mA lt 40mA Charging Stages Bulk Absorption Float Output um g P Float Charging 13 8V 12 8V 14 2V Voltage X1 X2 x4 Absorption Charging 14 4V 13 6V 15 2V Voltage xX 1 X 2 x 4 T t H B 4mV Cell C Compensation Maximum Efficiency 97 HMI LCD and Button Temperature controlled Cooling Mode Active Cooling Connecting Way M6 Terminals Ambient T mbient Temperature 10C 50 C Others Range Humidity 0 90 No condensation Dimensions 386mm 150mm 100mm Product Weight 2 5Kg 2 6Kg Storage Temperature 30 C 80 C Onions Funciar Remote Monitoring E RS485 or RS232 DB9 Port Add No 30 XinFeng Road Potoubei Village Ailian pwn Longgang Dist Shenzhen 51872 P R China YSMART TECHNOLOGY CO LTD website www ysmart tech com Phone 86 755 85232255 8 Quality Assurance 8 1 Quality assurance should be carried out according to the following rules e The product is guaranteed of replacement returning and repairing within 7 days after Sale e The product is guaranteed of replacement and repairing within 1 month after sale e The product is guaranteed of repairing within 12 months after sale 8 2 If it is not possible to identify the using date of the controller we would refer to the ex work date
17. rging process controlling The starting charging voltage of battery is different eMPPT will use the different charging strategies to finalize the charging process When starting charging voltage of battery is lower than 12 6V for 12V battery battery will go through three stages as Bulk Absorption and Floating charging When starting charging voltage of battery is higher than 12 6V for 12V battery battery will go through two stages as Bulk and Float charging Bulk charging Controller charges the battery by its maximum output current It is at maximum power point tracking state at this phrase Absorption charging Controller begins to limit the charging current to make the battery voltage fixed at a settled absorption voltage this voltage has temperature compensation for 2 hours This can increase t he charging saturation level of battery and prevent battery from leaking gas and this can increase the longevity of battery Float charging Battery is at saturation state and the controller charges the battery at a small current to make the battery voltage fixed at the settled float charging voltage this voltage has temperature compensation U 2h U Absorption loat Float Bulk Oe Bulk as Da 12 6V 12 0V t t Figure2 1 3 Stages Process Figure2 2 2 Stages Process 3 Charging voltage adjustable Users can adjust the float charging voltage within a certain range And the default value is 13 8V for 12V battery Users can adjust the a
18. ting parameter flicking presst shortly to adjust the parameter and the adjusting step is 0 1V Press OK for 5 seconds can save the revised the parameter Press ESC shortly to exit the page without saving the revised data Press OK and it can switch to another setting parameter No operation without 20s the controller will exit the adjusting state View and setting for Language Language selection page is the forth page Press OK for 5 seconds and it enters into language selection page Press to choose your target language Press OK for 5 seconds to save the revised data Press ESC shortly to exit the page without saving the revised data No operation in 20s the controller will exit the page View and setting Controller communication number Add No 30 XinFeng Road Potoubei Village Ailiary Fown Longgang Dist Shenzhen 51872 P R China 5 9 YSMART TECHNOLOGY CO LTD website www ysmart tech com Phone 86 755 85232255 The setting of the controller communications number is at the forth page At this page press OK for 5 seconds to enter into language setting state press OK shortly to switch into controller communication number setting state use to adjust the communication number press OK for 5 seconds and the modified data can be saved Press ESC shortly to exit the page without saving the modified data The controller will exit the parameter adjusting state automatically if no operation on the controller in 20s Parameters
19. to the factory default value Use to switch the page to the fifth Press OK for 5 seconds to enter into the page to recover the default Press OK again for 5 seconds to confirm it Press ESC shortly to exit the page No operation within 20s the controller will exit the page automatically Add No 30 XinFeng Road Potoubei Village Ailian Fown Longgang Dist Shenzhen 51872 P R China YSMART TECHNOLOGY CO LTD 6 Troubleshooting 6 1 Error code meaning and disposal website www ysmart tech com Phone 86 755 85232255 Error Code meaning and Cause Disposal Code of breakdown Solar panels input over Check whether the solar panels voltage protection model is right E001 the voltage of solar panels check whether too much solar array is over rated value and panels in series the controller stop charging Internal over heating Check whether cooling holes protection blocked E002 The temperature of internal Check whether the Environment power model is too high temperature too high controller stop charging Battery low voltage alarm Check whether the solar panels E003 battery can not get or cables damaged supplementary power for long Check whether the load power time too big E004 Breakdown of internal power Send back to distributor module Battery over voltage alarm Disconnect other charging E005 Other charging devices output devices to battery voltage too high Add No 30 XinFeng Road Potoubei
20. ubei Village Ailiary own Longgang Dist Shenzhen 51872 P R China YSMART TECHNOLOGY CO LTD website www ysmart tech com Phone 86 755 85232255 5 Operation 5 1 Button function Button Operation Function Nonparametric setting state short press forward flip menu In the parameter setting state short press this key can be Shortly eee setting increases Press In the parameter setting state long press can automatically Long increase the set value Nonparametric setting state short press reverse flip menu ia In the parameter setting state short press this key can be Shortly reduced setting Press In the parameter setting state long press can automatically Long reduce the set value In the parameter setting state it is used to switch to the different setting item of the same page Press At the confirmation page it used to confirm the current Shortly operation Press this button shortly when there is breakdown and you 2 can enter into trouble shooting page Parameter Settings page long press to enter the parameter Press setting state Long In the parameter setting state long press to save the current parameters and exit the set state In the parameter setting state it is used to cancel the current parameter revising Press At the confirmation page it used to cancel the current ESC Shortly operation Nonparametric setting state it is used to switch to the main page quickly Press Long no meaning
21. vironmental temperature and accumulative charging AH 5 4 View and clearing of PV generating data PV generating data is in the second page it includes the accumulative Add No 30 XinFeng Road Potoubei Village Ailian pwn Longgang Dist Shenzhen 51872 P R China YSMART TECHNOLOGY CO LTD website www ysmart tech com Phone 86 755 85232255 5 5 5 6 5 7 5 8 generating AH of the controller and the generating AH for yesterday Press OK button for 5 seconds and it enters into the confirming page of clearing the accumulative generating AH Press this OK button for 5 seconds again you will clear this data Press ESC for short can cancel the setting No operation in 20s it will exit this page automatically View and setting for Absorption charging voltage Absorption charging voltage data is in the third page Press OK for 5 seconds and it enters into parameter setting state Wait until the pending setting parameter flicking press shortly to adjust the parameter and the adjusting step is 0 1V Press OK for 5 seconds can save the revised the parameter Press ESC shortly to exit the page without saving the revised data Press OK and it can switch to another setting parameter No operation without 20s the controller will exit the adjusting state View and setting for float charging voltage Float charging voltage data is in the third page Press OK for 5 seconds and it enters into parameter setting state Wait until the pending set
22. voltage is still lower than battery voltage the controller will be back to sleep state again Battery reversed connection protection Connecting the battery to the controller by reversed polarity under the circumstances of not connecting the solar panels will not damage the controller Controller can work normally after connecting right 8 Solar panels reversed connection protection Connecting the solar panels with the controller by reserved connection will not damage the controller Controller can work normally after connecting right Protection for battery reversed discharging eMPPT controller can prevent battery from discharging to solar panels at night time Add No 30 XinFeng Road Potoubei Village AiliangTown Longgang Dist Shenzhen 51872 P R China YSMART TECHNOLOGY CO LTD website www ysmart tech com Phone 86 755 85232255 Internal over heating protection When controller detects the temperature of internal power module is higher than a certain value it will stop charging to the battery and it will restart charging the battery again when the temperature decreases to a certain value Over voltage protection for solar panels input When the input voltage of solar panels exceeds the maximum voltage permitted by the controller it will enter into protection state automatically and stop charging the battery When the input voltage recovers to the normal range the controller will start charging the battery again Power limiting for
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