User Manual
Contents
1. 12V DC Load rated current 20A oe PV Panel Open Circuit Voltage 17 23V To AC _ Short Circuit Current 22A Appliances om g em Som om o Inverter 12V Battery Figure 2 Connection of PV Charge Controller This controller has Electronic Blocking feature therefore it is not necessary to connect a diode between the PV module and the Controller The recommended wire size is 1IOA WG It is recommended that the PV Charge Controller should be installed in a dry sheltered location away from sources of high temperature and moisture 3 2 LED Indicator Battery Voltage is lower than 12 6V Battery Voltage has reached Low Voltage Disconnect LVD Battery Voltage is higher than 12 6V Battery Voltage is higher than 12 6V0 00 Fully Charged Voltage Setting and load has been disconnected P 3 Table 1 LED Indications 3 3 LCD Display The LCD Display shows the battery voltage PV panel voltage and the charging modes during normal day time operation At night time or low sunlight or PV disconnected situation display of PV VOLT value is to be ignored LCD DISPLAY Descriptions BATT VOLT Shows the Battery Voltage PY VOW e Shows the PV panel Input Voltage to the system PV CURR eese Shows the PV panel Input Current to the system TOD PV_AH Shows the total Ampere Hour input to the system in current day LID PY A esses Shows the total Ampere Hour input to the system a day before2. L2D BV Piste cacstetecee Shows the total Ampere Hour input to the system 2 days before Charging Status BULK CHARGE Shows the charging process is in Bulk charge ABSORB CHARGE Shows the charging process is in Absorption charge FLOAT CHARGE Shows the charging process is in Float charge EQULIZ CHARGE Shows the charging process is in Equalization charge PV lt BATT VOLT Indicates the PV voltage is less than the Battery Voltage Table 2 LCD Display 3 3 1 LCD Display Sequence Sequence starts here Initialisation Version No or BATT VOLT 00 0V gt PV VOLT 00 0V gt PV CURR 00 0A Brand Name a L2D PV_AH 000 0 lt L1D PV_AH 000 0 4 TOD PV_AH 000 0 Figure 3 The LCD Display Sequence According to the Charging Status as shown in Table 2 P 4 3 4 The Dip Switch Set Button and Reset button functions The dip switch set buttons and reset button are used for adjusting the PV Charge Controller Settings see Section 3 4 1 and 3 4 2 Open the Side door you can see the dip switch amp set buttons 3 4 1 Adjust the PV Charge Controller Settings SET button 1 SET button 2 RESET button DIP Switch 1 2 amp 3 Temperature sensor Figure 4 Figure 5 Factory Preset The following table shows the factory preset values of the PV Charge Controller Bolk WON AC sasinipun 14 3V PON VON ee E teavens esters 13 5V Low Voltage Disco
3. maintenance or cleaning Turning off controls will not reduce this risk PV panels produce power when exposed to light cover them with opaque material before servicing 4 Working in Vicinity of a Lead Acid Battery is dangerous Batteries generate EXPLOSIVE gases during normal operation Provide ventilation to outdoors from the highest point of the battery compartment 5 This charge load controller is intended to be used with a battery supply of 12 VDC nominal voltage 6 Be extra cautious to reduce the possibility of dropping a metal tool onto batteries It might spark or short circuit batteries or other electrical parts that may cause explosion Cover wrench handles with plastic tape or viny dip coating material Specifications Models MP3129 Battery voltage 12V Maximum PV panel open circuit voltage 6V Continuous load charge current Maximum charge current 5 mins Maximum load current 5 mins Operation current no Load and no PV Voltage across terminals PV to Battery Voltage across terminals Battery to Load Electronic Blocking To protect against reverse polarity connection of PV panel and to block current from battery to PV panel when voltage of battery is higher than PV panel Yes Battery reverse polarity protection Yes Overcharge amp Over discharge protection Yes Battery status LED indication Charging status indication Recommended wire size Weight a Fuse 30A Operating ambient temperature Over temperat
4. one complete cycle Oe a P 5 Bulk Voltage Bulk CH volt Adjustable range is 12 0 16 5V If out of this range it will restore to factory preset Float Voltage Float CH volt Adjustable range is 12 0 16 5V If out of this range it will restore to factory preset Low Voltage Disconnect LVD volt Low Voltage Reconnect LVR volt l Night Light Mode 10 Selections see section 4 3 3 for more details Hl Switch the dip switch 2 to ON position Exit Setting Mode and resume to normal operation gt indicates each subsequent press of Reset button Figure 6 Adjustable parameters in Setting Mode 4 2 Select the auto equalization charging and night light mode The dip switch 1 is for Night Light Mode switch 2 for Equalization Charging mode and switch 3 is always set at off position THE PV CHARGE CONTROLLER IS FACTORY PRESET FOR USE WITH SEAL TYPE BATTERY THAT IS NO AUTO EQUILIZATION CHARGING BECAUSE DIP SWITCH 2 IS AT ON POSITION Equalization Eq charging is only for wet type Lead Acid Battery When Auto Equalization Charging is set at ON mode Equalization charge will occur for 2 hours once every thirty days Use the dip switch to select equalization charging and night light mode as below AUTO Equalization Night Light Mode Dip Switch Settings Charging Dip switch 1 OFF OFF OFF Dip switch 2 ON O Dip switch 3 OFF Preset Dip switch 1 ON OFF ON Dip sw
5. PV Charge Controller MP3129 User s Manual PW CHARGE CONTROLLER BATTERY STATE 10 Red BAT V lt 12 6V Red BAT V LVD Green BAT V gt 12 6V ONLY FOR 12V PV SYSYEM O Green BAT V Bulk DC LOAD moo Charging V BAT Full E a HM cy Orange BAT V lt LVD V Load Cut Off ome f a an EE a Ge rE WET TYPE BAT ONLY CO Red Gree Table of Contents Precautions and Specifications 1 Introduction 3 4 1 Adjust the PV Charge Controller Settings oom 3 4 2 Select the Auto Manual Equalization charging and Night Light Mode 4 PV Charge Control Mode h 4 1 3 Stage Charge Control iii 4 2 Equalization Charging Mode Automatic or Manual 4 2 1 Automatic Equalization Charging 4 2 2 Manual Equalization Charging mm 4 3 12V DC Load Terminal Control Mode mm 4 3 1 Low Voltage Disconnect LVD 4 3 2 Low Voltage Reconnect LVR 4 3 3 Night Light Mode Programs 4 4 Temperature Sensor Optional 4 5 Over Temperature Protection mms 5 Remote Signal Terminal Optional 00 FAIAYNAAAA A A Fh HP Hh WWWQWN WN Precautions 1 Before using the charge load controller read all the instructions and cautionary markings on the charge load controller the batteries and the photovoltaic panels 2 Do not attempt to repair the controller Incorrect re assembly may result in a risk of electric shock or fire 3 To reduce risk of electric shock disconnect all wiring before attempting any
6. al Temperature Sensor for compensated battery charging Optional Remote Signal Terminal Control and Indicator The following diagram shows the hardware interface of the PV Charge Controller Q PY CHARGES GCGCONTROLLER BATTERY STATE Red BAT V lt 12 6V Red BAT V LVD Green BAT V gt 12 6V ONLY FOR 12V PV SYSYEM O Green BAT V Bulk Charging V BAT Full Be LOURD Aas He Orange BAT V lt E LVD V Load Cut Off _ om ES WET TYPE BAT ONLY C Red Green Equalization Charging Figure 1 Front view of PV Charge Controller Battery LED Indicator LCD Display Reset button see Section 3 4 Temperature Sensor Optional 12V DC Load terminal with Low Voltage Disconnect NIGHT LIGHT mode Section 4 3 12V Battery connection terminal PV Panel connection terminal Remote Signal Terminal Optional Side Door open to access switches for setting P 2 3 Installation and Indication 3 1 Connection The PV Charge Controller should be connected as follow PY CHARGE CONTROLLER BATTERY STATE Red BAT V lt 12 6V Red BAT V LVD Green BAT V gt 12 6V ONLY FOR 12V PV SYSYEM O Green BAT V Bulk aye Charging V BAT Full DC LOAD ERTE HK Orange BAT V lt j LVD V Load Cut Off ami oF cm a a _ o ES __ Eizo OO CO Red Green BE Ee e ee Equalization Charging
7. control signal 12V OV up to 1A synchronized with Night Light mode Pin6 amp 4 Shows the battery status Red LED See Section 3 2 Pin 8 amp 4 Shows the battery status Green LED See Section 3 2 Table 7 Pins configuration Note Pin 3 and 5 are not used in Remote signal Terminal Rev 2 05 2009 7673 7120 2302 END
8. d again The following chart shows the night light mode selections LCD Display Explanation SUNSET NIGHT SUNRISE OFF OFF 2 HR ON 2 HOURS ON 4 HR ON 4 HOURS ON 6 HR ON 6 HOURS ON 8 HR ON 8 HOURS ON 10 HR ON 10 HOURS ON 3 OFF 1 3 OFF 1 4 OFF 2 4 OFF 2 6 OFF 2 6 OFF 2 DK DN Dusk to Dawn Table 5 DESCRIPTION OFF Load remain turned off X Hours On Load 1s turned on for X hours after sunset Y OFF Z Load is turned on after for Y hours after sunset turned off during the night then turned on again Z hours before sunrise Dusk to Dawn Load is turned on all night Measure Night Length The load timer options that turn the load on again before sunrise require that the PV charge controller to measure the length of the night The default value of night length is 12 hours after installation or disconnect then reconnect the battery The local length of night will take the moving average of 4 consecutive nights If the solar array 1s disconnected during service the controller will then record premature night duration This wrong night length data will be outdated after another 4 days of normal service Alternatively the above error can be corrected by disconnect then reconnect the battery Verify Night Light Mode selection To verify the night light mode selection During night light mode press the reset button once The green LED will flash once per second Count these LED flashes to confirm t
9. he correct selection Each of the 10 night light mode options has a unique number of flashes These are as follows Switch Setting of Flashes OFF 0 2 Hours On l 4 Hours On 2 6 Hours On 3 8 Hours On 4 10 Hours On 5 3 OFF 1 6 4 OFF 2 7 6 OFF 2 8 Dusk to Dawn 9 Table 6 Note Do not press the reset button when the LED is flashing during the verification 4 4 Temperature Sensor Optional When an external temperature sensor optional accessory is installed the controller will adjust the Bulk and Float Charge Voltage according to the temperature of the battery type The regulation setpoint is 25 C The Controller adjusts the BULK and FLOAT setpoints 0 03V C Only the factory provided temperature sensor optional accessory can be used If no temperature sensor is installed the controller will set the temperature of the battery at 25 C Temperature Sensor Connection Terminal Stereo Jack Figure 7 4 5 Over Temperature Protection The operation temperature of the transistors of the PV Charge Controller is also continuously monitored If excessive temperature is detected the charge controller transistors will repeatedly and rapidly turn On and Off to reduce the charging rate so as to reduce the transistors temperature In case the charging current from the solar panel is reduced to zero and over temperature condition still persists the load will also be disconnected When the temperature has dropped to t
10. he working range the PV panel and the load will be connected again 5 Remote Signal Terminal Optional The PV controller has a remote signal output terminal Optional which can 1 control the ON OFF operation of equipment such as inverter hooked up to the battery bank to operate along with the night light mode program and share the safeguard function such as low battery disconnect and reconnect 2 make extension connection of the battery status LED to allow remote monitoring Battery bank status see Section 3 2 P 10 Activate the feature Please follow the steps below 1 Open the case of the controller there should be a small control board near the Remote Signal Terminal as shown in figure 6 Figure 8 ee a amp 2 On the small control board there is a sky blue T m color dip switch Turn the dip switch 1 and 2 x ry a id SS ee tee e Prr u to ON position as shown in figure 7 N te H 5 hag 8 454 71122012 j m consa Ras iE CON4 A E gt MASSUSE tac 3 005 1ZS a Figure 9 Connection Use the RJ 45 connector 8 pin to control ON OFF of the LED and Equipments The pins configuration and connection are as follow RJ 45 PIN PIN Remote ON OFF Control of Equipment Connected to Battery 87654321 RJ 45 Remote Signal Terminal Figure 11 Connection diagram of RJ 45 to Equipments Figure 10 Pin l amp 2 On Off Control Signal synchronized with Night light Mode Pin 7 amp 4 High Low
11. ifference will decrease as the Absorption time increase 3 The Batt Volt display during Float Charge is less than the Float Charge Voltage Setting P 7 4 2 Equalization Charging Mode Automatic or Manual WARNING Equalization Charging is only for Wet type Lead Acid Battery The Equalization Charging Voltage is factory pre set to the Bulk Voltage 1 Volt The battery manufacturer should be consulted Clean distilled water will need to be added to the battery AFTER the equalization process 4 2 1 Automatic Equalization Charging Automatic Equalization charge is only available when battery voltage is higher than the Low Voltage Disconnect LVD voltage see 4 3 1 To set Automatic Equalization Charging set the dip switch 2 to OFF position The PV Charge Controller will perform Equalization charging for 2 hours once every 30 days During equalization charge it can be stopped any time by pressing the Reset button once and the controller will return to the charging mode before the Equalization charge 2 2 Manual Equalization Charging Set the Night Light Mode dip switch I to off position Press and hold the Reset button for 10seconds and the equalization charge will go on for two hour During equalization charge it can be stopped any time by pressing the Reset button once and the controller will return to the charging mode before the Equalization charge 4 3 12V DC Load Terminal Control Mode The 12V DC load termina
12. itch 2 ON Dip switch 3 OFF Dip switch 1 OFF Dip switch 2 OFF Dip switch 3 OFF Dip switch 1 ON ON ON Dip switch 2 OFF ON Dip switch 3 OFF Table 4 Dip Switch Functions P 6 4 PV Charge Control Mode The PV Charge Controller can operate in the several modes This includes the 3 stage Charge Control Equalization Charging Mode DC Load Control Mode NIGHT LIGHT mode Temperature Sensing and Over Temperature Protection features 4 1 3 Stage Charge Control The main function of charge controller is to regulate the flow of electricity from the photovoltaic panels to the batteries In PV systems with batteries the batteries must be protected from overcharging and be maintained at fully charged state The PV Charge Controller uses the Micro Processor and PWM Pulse Width Modulation to give optimal and safe charging It makes varying On Off pulses of electrical energy from the photovoltaic PV panel in charging the battery according to the battery state It has 3 stages of charging as follows a BULK CHARGE At this mode a preset maximum constant amount of current amps 1s fed into the battery as the no PWM 1s present As the battery is being charged up the voltage of the battery increases gradually b ABSORPTION CHARGE After the preset voltage is reached approximately 14 3 volts for a 12 volt system the voltage is then held constant As the battery continues to be charged at constan
13. l is designed for low power DC load such as street light It prevents over discharging the battery and has 10 Night Light timer programs 4 3 1 Low Voltage Disconnect LVD When the battery voltage is lower than the Low Voltage Disconnect LVD setting for 5 minutes the LED will blink orange once every 2 seconds and the load will be cut off After the load is cut off user can press the Reset button once to switch on the load for a grace period of 10 minutes for emergency purpose 4 3 2 Low Voltage Reconnect LVR When the battery voltage is higher than Low Voltage Reconnect LVR setting for 5 minutes the controller will automatically reconnect the load 4 3 3 NIGHT LIGHT Mode Programs In the night light mode we have 10 selections To Activate the NIGHT LIGHT Mode switch the dipswitch I to ON position After activating when the PV panel voltage is lower than 3 5V for 10 minute the Controller will turn on the light for a preset period of time according to the option selected When the PV panel voltage is higher than 3 5V for 10minute the Controller will turn off the light In NIGHT LIGHT Mode press and hold the Reset button can switch on the Light to test the light P 8 Also when the battery is lower than the Low Voltage Disconnect LVD for 5 minutes the load will be cut off When the battery voltage becomes higher than Low Voltage Reconnect LVR setting for 5 minutes the controller will automatically reconnect the loa
14. nnect ccccceeeeees 11 5V Low Voltage Reconnect cc ceeeeeeeeeeeeeees 12 5V Night Light Mode Option cca Off refer to Table 5 in Section 4 3 3 Table 3 Preset values of the adjustable parameters The preset Bulk and Float Setpoints are for typical Sealed Gel type Lead Acid Battery only For typical wet type Lead Acid Battery set Bulk setpoint to 14 8V and Float setpoint to 13 5V Please refer to battery manufacturer s specific recommended values How to adjust the Bulk Float Charge Voltage LVD LVR and Night Light Mode First take out all the connections to the PV controller except those to battery Push up the slide cover at the right side of the PV controller Push up all three DIP Switches to OFF position Disconnect the battery negative terminal at the controller Press and hold the Reset Button and reconnect the battery negative terminal again After 3 to 5 seconds release the Reset Button and note the LCD shows Float V The controller is now in Set Mode short presses of the Reset Button show as in following cyclic order with preset values FLOAT CH LVD LVR L OPTION Bulk CH FLOAT CH 8 Press the Set Button 1 and 2 to adjust the desired setting 9 When the desired settings are done double check all settings by pressing the Preset Button 10 To store the new settings push dann the Dip Switch 2 to On position and take note of the LCD displays INITIALIZATION until
15. t voltage the charging current decreases The charging voltage is held at the Bulk Voltage Setting for one full hour with various rapid On Off pulses PWM It then switches to Float Charge Mode c FLOAT CHARGE The controller will maintain the battery voltage at the float voltage setting by giving shorter On pulse charge to make up for any detected self discharge of the battery When the battery voltage drops below the Float Voltage Setting for a total period of 10 minutes a new charging cycle is activated in Bulk or Absorption Charge The three stages charging method works well with the chemical reaction that occurs as a battery is being charged When a battery is more discharged a regulated maximum current can be applied since there is a lot of material available for the reactions to occur As the battery refills less and less chemical material is available for the reaction By using PWM to slowly reducing the charge current while maintaining a preset high voltage the battery is more closely refilled at the reaction rate of the chemicals Finally the Float voltage keeps the battery fully charged at all times taking care of the self discharge Remarks 1 When the Battery is charged up to Bulk Charge Voltage setting the LCD will only show the Bulk charge voltage one or two times quickly then the PV controller switches to Absorption charge 2 The Batt Volt display during Absorption charge is less than Bulk Voltage Setting The d
16. ure protection Yes Battery charging float voltage setting Battery charging bulk voltage setting DC load control mode For DC load terminal Low Voltage Disconnect LVD Adjustable from 8 16V Low Voltage Reconnect LVR Adjustable from 8 16V P 1 1 Introduction The MP3129 PV Charge Controller is designed for use with all types of 12V photovoltaic PV panels systems and different types of 12V batteries such as wet or sealed lead acid lead calcium lead antimony battery Numerous features are provided to maximize the performance of the system Zs SS ee a Electronic Blocking To protect against reverse polarity connection of PV panel and block current from battery to PV Panel when voltage of Battery is higher than PV panel Suitable for PV panels with Open Circuit Voltage from 17 to 23V Rated charging load current 20A PWM Charging with 3 stage Charge Control to allow battery be left unattended for long period User Adjustable Charge Control Settings for different types of batteries User Adjustable Low Voltage Disconnect and Low Voltage Reconnect Build In Microprocessor for PV charge control to maximize the charging efficiency Overcharge and Over discharge Protection Over Temperature Protection Short Circuit Protection at load terminal 5 amp Battery Reverse Polarity Protection at Battery Connection Terminal 6 Informative LCD Display and Tri Color LED indication of system and battery conditions Option
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