ViewStar)Series))oldbluesblog.com/files/PWM30LCD-Viewstar.pdfViewStar)Series)) VS1024N,)VS2024N,)VS3024N! Pulse!Width!Modulation!Solar!Charge!Controller!Manual!! 14288)Central)Ave.,)Suite)A)Chino,)CA)91710)

ViewStar Series VS1024N, VS2024N, VS3024N Pulse Width Modulation Solar Charge Controller Manual

14288 Central Ave., Suite A Chino, CA 91710 1-‐800-‐330-‐8678

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Contents 1. Important Safety Information 2 2. General Information 3

2.1 Overview 3 2.2 Optional Accessories 4

3. Installation Instructions 5 3.1 General Installation Notes 5 3.2 Mounting 5 3.3 Wiring 7

4. Charge Controller Basics 9 4.1 PWM Technology 9 4.2 Battery Charging Information 9 4.3 HMI Interface 11 4.4 Load Work Mode 13

5. Charge Controller Operation 14 5.1 Main Menu Interface 14 5.2 System Monitor Interface 15 5.3 Device Settings Interface 19 5.4 Charge and Discharge Parameters Settings 20 5.5 Load Control Interface 23 5.6 Nominal Parameter Interface 28 5.7 Factory Reset 30

6. Protections, Troubleshooting and Maintenance 31 5.1 Protection 31

5.2 Troubleshooting 32 5.3 Maintenance 34

7. Technical Specifications 35 8. Warranty 39

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1. Important Safety Information Save these instructions This manual contains important safety, installation, and operating instructions for the charge controller. The 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.

CAUTION: Indicates a critical procedure for safe and proper operation of the controller.

NOTE: Indicates a procedure or function that is important for the safe and proper operation of the controller. General Safety Information

• Read all of the instructions and cautions in the manual before beginning installation.

• There are no user serviceable parts inside the controller. Do not disassemble or attempt to repair the controller.

• Disconnect the solar module and fuse/breakers near to battery before installing or adjusting the controller.

• Install external fuses/breakers as required. • Do not allow water to enter the controller. • Confirm that the power connections are tightened to avoid excessive heating

from a loose connection.

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2. General Information 2.1 Overview

The ViewStar Series controller is suitable for off-‐grid solar applications. It protects the battery from being over-‐charged by the solar module and over-‐discharged by the loads. The charging process has been optimized for a long battery life and improved system performance. The comprehensive self-‐diagnostics and electronic protection functions can prevent damages from installation mistakes or system faults. This controller has the following features:

• 32 bit MCU • 12 bit A/D high-‐precision sampling to ensure accuracy. • Excellent EMC design. • Nominal system voltage auto recognition. • High efficient PWM charging. • Automatic recognition of day and night. • Dot-‐matrix LCD screen with backlit and HMI (human-‐machine interface) • Full control of parameter settings. Charging parameters can be adjusted. • Unique dual timer function; enhance the flexibility lighting systems. • Sealed, Gel and Flooded battery option. • Temperature compensation and correcting the charging and discharging

parameters automatically, improving battery lifetime. • Remote temperature sensor connection. • Electronic protection: Overcharging, over-‐discharging, overload, and short

circuit. • Reverse protection: Any combination of solar module and battery, without

causing damage to any component. • RJ45 interface for use with the remote meter MT-‐100, convenient to check

operating parameters of controllers. Although the ViewStar series charge controller is very simple to configure and use, please take your time to read the operator's manual and become familiar with the controller. This will help you make full use of all the functions and improve your solar PV system.

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Description of ViewStar Charge Controller:

Figure 2-‐1 ViewStar 10-‐20A model (left) and ViewStar 30-‐60A model (right)

1. Local temperature sensor 2. Fault LED indicator 3. Charging LED indicator 4. Liquid Crystal Display (LCD, Dot-‐matrix) 5. Combined-‐type buttons (used for operation and navigation of controller) 6. Communication interface (RJ45 connection for remote display MT-‐100) 7. Load Terminals 8. Battery Terminals 9. Solar Module Terminals 10. Remote temperature interface (Model TS-‐R, optional accessory)

2.2 Optional Accessories Remote Meter (Model: MT-‐100)

The digital remote meter displays system operating information, error indications, and self-‐diagnostics read-‐outs. Information is displayed on a backlit LCD display. The large numerical display and icons are easy to read and large buttons make navigating the meter menus easy. The meter can be flush mounted in a wall or surface mounted using the mounting frame (included). The MT-‐100 is supplied with 5.9 ft. of cable and a mounting frame. The MT-‐100 connects to the RJ45 port on the ViewStar. Remote Temperature Sensor (Model: TS-‐R)

The remote temperature sensor can be attached to a battery or battery bank for temperature compensation of the charging and discharging parameters. The standard length of the cable is 6.6 ft. The TS-‐R connects to the 2ERJ-‐3.81 port of the ViewStar.

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3. Installation Instructions 3.1 General Installation Notes

• Read through the entire installation section first before beginning installation. • Be very careful when working with batteries. Wear eye protection. Have fresh

water available to wash and clean any contact with battery acid. • Use insulated tools and avoid placing metal objects near the batteries. • Explosive battery gasses may be present during charging. Be certain there is

sufficient ventilation to release the gasses. • Avoid direct sunlight and do not install in locations where water can enter the

controller. • Loose power connections and/or corroded wires may result in resistive

connections that melt wire insulation, burn surrounding materials, or even cause fire. Ensure tight connections and use cable clamps to secure cables and prevent them from swaying in mobile applications.

• Use with Gel, Sealed, or Flooded batteries only. • Battery connection may be wired to one battery or a bank of batteries. The

following instructions refer to a single battery, but it is implied that the battery connection can be made to either one battery or a group of batteries.

• Select the system cables according to 3A/mm2 current density.

3.2 Mounting

NOTE: When mounting the controller, ensure free airflow through the controller heat sink fins. There should be at least 6 inches (150mm) of clearance above and below the controller to allow for cooling. If mounted in an enclosure, ventilation is highly recommended.

WARNING: Risk of explosion! Never install the controller in a sealed enclose with flooded batteries! Do not install in a confined area where battery gas can accumulate.

Step 1: Choose mounting location

Place the controller on a vertical surface protected from direct sunlight, high temperature, and water. Make sure there is good ventilation.

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Step 2: Check for Clearance Place the controller in the location where it will be mounted. Verify that there is sufficient room to run wires and that there is sufficient room above and below the controller for airflow.

Step 3: Mark Holes

Use a pencil or pen to mark the four (4) mounting hole locations on the mounting surface. Step 4: Drill Holes

Remove the controller and drill four sizeable holes in the marked locations. Step 5: Secure Controller

Place the controller on the surface and align the mounting holes with the drilled holes from step 4. Secure the controller in place using the mounting screws. 3.3 Wiring

NOTE: A recommended connection order has been provided for maximum safety during installation.

NOTE: There are two type of grounds for this controller: Positive and negative grounds. The type of grounding will be respective to the model of the charge controller. VSXXXXN the letter “N” indicates negative ground.

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CAUTION: Do not connect the loads with surge power exceeding the ratings of the controller.

CAUTION: For mobile applications, be sure to secure all wiring. Use cable clamps to prevent cables from swaying when the vehicle is in motion. Unsecured cables create loose and resistive connections, which may lead to excessive heating and/or fire.

WARNING: Risk of explosion or fire! Never short circuit battery positive (+) and negative (-‐).

WARNING: Risk of electric shock! Be careful when handling solar wiring. The solar module (s) high voltage output can cause severe shock or injury. Be careful when wiring the solar panel. Before the battery is connected, make sure that voltage of battery is higher than 9 volts so it can power the controller. If the nominal system voltage is 24v, make sure that voltage of the battery is no less than 18 volts. Same idea applies for 36v and 48v battery systems:

• 36v battery system, battery voltage must be no less than 30 volts • 48v battery system, battery voltage must be no less than 42 volts

The nominal system voltage can only be automatically identified when controller is started for the first time.

DC electric equipment can be connected to the controller’s load terminals whose nominal operation voltage is the same as the nominal voltage of the battery. The controller supplies power to the loads with battery voltage. It is suggested that the positive or negative poles of the battery and loads should be connected to a safety device, such as a fuse or DC breaker with a rated current that is oversized by a factor of 1.25 from that of the nominal charging or discharging current. Do not switch on the safety device while it is being installed. Switch on the safety device after the wiring is confirmed to be correct.

CAUTION: On some occasions the controller must be connected to ground. If your system consists of a positive ground, then the positive pole of the battery must be connected to ground. If your system consists of a negative ground, then the negative pole of the battery must be connected to ground. The most common connection is a negative ground, but the controller supports positive as well if your system requires this type of grounding.

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Step 1: Wiring

Connect the components in the order shown in the figure below. First connect the battery, then connect any loads (if applicable), and finally connect the solar module(s). This order is necessary to avoid a nominal system voltage identification error.

Step 2: Confirm Power-‐up

When battery power is applied and the controller powers up, LCD will display the initialization interface (“WELCOME VERSION 1.XX”) and the two indicator lights will be lit. If the controller does not power-‐up please refer to Section 5 for troubleshooting.

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4. Charge Controller Basics 4.1 PWM Technology The controller is based on the advanced Pulse Width Modulation (PWM) charging technology. With range of 0-‐100%, it can charge the battery quickly and safely under any condition of a solar photovoltaic system.

When charging, it uses automatic duty cycle conversion which creates pulses of current to charge the battery. Intermissions make the oxygen and hydrogen generated by chemical reactions combine again and are absorbed. It can naturally eliminate concentration polarization and ohm polarization and reduce the internal pressure of the battery, thus making the battery absorb more power. Pulse current charging mode makes the battery have more time to react, which reduces the gassing volume and makes the battery improve the acceptance rate of the charging current. 4.2 Battery Charging Information Four Charging Stages The ViewStar series controllers have a 4-‐stage battery-‐charging algorithm for rapid, efficient, and safe battery charging.

Figure 3-‐1 PWM10CC-‐WP charging modes

Bulk Charge

In this stage, the battery voltage has not yet reached boost voltage and 100% of the available solar power is used to recharge the battery.

Boost Charge

When the battery has recharged to the Boost voltage set point, Constant Voltage Regulation is used to prevent heating and excessive battery gassing. The Boost Stage

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remains at 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 controller will enter into boost charging stage.

Float Charge

After the Boost voltage stage, the controller will reduce the battery voltage to float voltage set point. 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 point. Then the controller will reduce the voltage to the floating stage, charging with a smaller voltage and current. It will reduce the temperature of the 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 set point. Should the battery voltage remain below the boost reconnect charging voltage, the controller will exit Float stage and return to Bulk charging.

Equalize

WARNING: Risk of explosion! Equalizing flooded batteries can produce explosive gases, so a well-‐ventilated battery box is necessary.

NOTE: Equipment damage! Equalization may increase battery voltage to a level damaging to sensitive DC loads. Ensure that all load allowable input voltages are greater than the equalizing charging set point voltage.

NOTE: Equipment damage! Over-‐charging and excessive gas precipitation may damage the battery plates and activate material shedding on them. Too high of equalizing charge or for too long may cause damage. Please carefully review the specific requirements of the battery used in the system.

Certain 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.

Every 28th of the month, the controller will engender equalize charging stage. It will remain equalizing the batteries for 120 minutes when equalization stage is constant, or it will remain 180 minutes when switching between stages. Equalize charge and boost

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charge are not carried out constantly in a full charge process to avoid too much gas precipitation or overheating of battery.

4.3 HMI Interface

Figure 4-‐3 Charge controller LED indicators

Button instructions:

Charging Indicator

The green LED indicator will turn on whenever sunlight is available for battery charging. Under normal charging conditions, the green charging LED will stay on at all times.

Color Indication Operating State Green On solid Charging

Table 4-‐1 Charging LED indicators

• Menu / Cursor left button

• Cursor up / Number add button

• Cursor down / Number reduce button

• Enter / cursor right button

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Fault Indicator

When the following cases occur, the fault indicator will be flashing red:

Solar module

• Over-‐current • Error while trying to measure the voltage • Reverse-‐protection MOS-‐I short • MOS-‐C short • MOS-‐I or MOS-‐C disconnection • MOS break in control section

Battery

• Over-‐voltage • Error while trying to measure the voltage • The temperature is above range (battery too hot)

Load:

• Over load • Short • Discharging MOS Short • Error while trying to measure the voltage

Device

! Controller is operating too hot

For trouble shooting please refer to Chapter 5.

Color Indication Operating State

Red

Flashing

PV: Over-‐current, Measure error, MOS-‐I Short, MOS-‐C Short or MOS Break BATT: Over-‐voltage, Measure error or Running too hot LOAD: Over load, Short, Discharging MOS short, or Measure error DEVICE: Running too hot

Table 4-‐2 Fault LED indicators *Please refer to Chapter 5 for troubleshooting

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4.4 Load work mode Dusk to Dawn

When solar module voltage goes below the point of NTTV (Night Time Threshold Voltage) at sunset, the controller will recognize the starting voltage and turn on the load after configurable delay time. When solar module voltage goes above point of DTTV (Day Time Threshold Voltage), the solar controller will recognize the starting voltage and turn off the load after configurable delay time.

Light ON + Timer

When solar module voltage goes below the point of NTTV (Night Time Threshold Voltage) at sunset, the solar controller will recognize the starting voltage and turn on the load after configurable delay time. The load will be on for several hours which users set.

Timer

The mode includes single and double time intervals. Set the starting and ending time for each time interval and the controller will work according to the set time interval.

Manual mode

This mode is to turn ON and OFF the load manually with a button.

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5. Charge Controller Operation Initialization interface

When the controller is powered on, the MCU is initialized, and the following should appear on the screen:

5.1 Main Menu Interface

When the controller is initialized, the screen will automatically display the PV input

(which part of the monitoring interface). To get to the main menu screen press , this menu will display the following options:

Pressing the continuously to scroll through the rest of the contents on the menu list:

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5.2 System Monitor Interface

In the main menu interface, when or is pressed, the inverse cursor moves between the menu list. When the inverse cursor rests at 1. Monitoring in the main menu, press to enter into the system monitoring interface which displays content as follows:

Press or to circularly display every real-‐time parameters interface

! Solar array voltage and current

The main screen of the monitoring interface shows real-‐time voltage and current of the solar module

! Battery voltage and charging/discharging current Press to move onto the following interface, which shows real-‐time voltage and charging/discharging current of the battery. Negative symbol next to the current means that the battery is being discharged. Likewise, a positive symbol next to the current means that the battery is being charged.

! Battery temperature and battery temperature compensation coefficient Press to move onto the following interface, which shows real-‐time temperature of the battery and the battery temperature compensation coefficient.

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! Load voltage and current

Press to move onto the following interface, which indicates, in real-‐time, the voltage and current of the loads.

! Real-‐time clock and imaging system status

Press to move onto the following interface which will display a real-‐time clock and imaging system status. Here you can turn the ON and OFF the loads (if manual mode is chosen by the user) by pressing in the interface. Press once to turn ON the loads, press a second time to turn them OFF.

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! Significance of system status icons

Day

Night

Charging the battery

Normal state

Low voltage

Normal Operation

Transitioning state

System needs attention

Load output is ON

Load output is OFF

! System Status Press until you see the following screen which display the system status

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PV status

Connect Disconnect Measure Err Over Current MOS-‐I Short MOS-‐C Short MOS Break

BATT status

Equalize Boost Float NoCharge LVD UVW Normal OVD Error

OverTemp

LOAD status

On Off OverLoad Short Error MOS Short

DEVICE status

Normal OverTemp

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5.3 Device Settings Interface

In the main menu interface, press or to navigate to the menu options. When the inverse cursor rests on 2. Device Set, press to enter into the Device Settings screen. When the inverse cursor rest on the real time clock, it will stop running. Please correct the time if necessary.

At the Device Settings interface, press or to move between the adjustable

parameters. Pressing will move the inverse cursor to the right. While pressing

will move it to the left. If the inverse cursor is at the very beginning, press to jump back to the main menu screen. When the inverse cursor rests at some parameter, the contents of the parameter can be modified. To modify a parameter, press to increase the current parameter, or press to reduce it. Date, time and backlight can be adjusted with these buttons. The Backlight has a maximum range of 0-‐30 minutes (default is one 1 minute). Settings can be saved by pressing until the last adjustable parameter is reached, in this case it will be the Backlight. When the last adjustable parameter is passed, the following picture will appear:

Press or to choose between Save or Cancel. The inverse cursor will rest on the selected option. Press to confirm the selection. If the Save option is chosen, then the parameters will be saved. If Cancel was chosen, then parameters won’t be saved, and the screen will jump back to the main menu interface.

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When saving, the controller will check and confirm valid parameters. If the parameters are correctly set, and success message will appear as shown below:

If the following message appears while saving the parameters, it indicates that there was a failure while trying to the save the parameters because a setting might be illegal. Please verify and correct the parameters.

After successfully saving the parameters, press to exit to the main menu.

5.4 Charge and Discharge Parameters Setting Interface

In the main menu interface, press or to navigate to the menu options. When the inverse cursor rests on 3. Parameter Set, press to enter into the charge

and discharging parameters setting screen. Once again, press or to move

between the adjustable parameters. Pressing will move the inverse cursor to the right. While pressing will move it to the left. If the inverse cursor is at the very

beginning, press to jump back to the main menu screen. When the inverse cursor rests at some parameter, the contents of the parameter can be modified. To modify a parameter, press to increase the current parameter, or press to reduce it.

Please note that the control voltage setting must be set as follow:

Over Volt. Disc > Charg Lmt > Equal > Boost > Float > Boost V. Rect or Under V. Rect > Under V. Warn > Low V. Disc > Discharg Lmt.

Please refer to Chapter 6 for the control voltage table.

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! Temperature compensation coefficient The first screen for the Charge and Discharge Parameters, is the temperature

compensation coefficient. Press or to move between the adjustable parameters. The inverse cursor should move among every parameter. Press or to change the temperature compensation coefficient as needed.

! Control parameters interface In the next four screens, all the control parameter can be adjusted as needed. Press continuously at the Temperature compensation coefficient to

access these screens. Press or to move between the adjustable parameters. The inverse cursor should move among every parameter. Press

or to change the parameters as needed.

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Settings can be saved by pressing until the last adjustable parameter is reached, in this case will be the “Discharg Lmt”. When the last adjustable parameter is passed, the following picture will appear:

Press or to choose between Save or Cancel. The inverse cursor will rest on the selected option. Press to confirm the selection. If the Save option is chosen, then the parameters will be saved. If Cancel was chosen, then parameters won’t be saved, and the screen will jump back to the main menu interface. When saving, the controller will check and confirm valid parameters. If the parameters are correctly set, a success message will appear as shown below:


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5.5 Load Control Interface

In the main menu interface, press or to navigate through the menu options. When the inverse cursor rests on 4 Load Set, press to enter into the Load Control Interface. In the Load Control Interface, you will get additional options:

When adjusting the threshold voltage for the light control, it should meet the following requirement:

DTTV (Day Time Threshold Voltage) >= NTTV (Night Time Threshold Voltage) + 1V.

Notice: Adjust DTTV (OFF) first and then NTTV (ON).

! Manual Control Interface Press or to navigate to the sub-‐menu options. When the inverse cursor rest on Manual, press to enter into the Manual Control screen.

Press or to choose between ON or OFF. The inverse cursor will rest on the selected option. Press to confirm the selection.

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Press or to choose between Save or Cancel. The inverse cursor will rest on the selected option. Press to confirm the selection. If the Save option is chosen, then the parameters will be saved. If Cancel was chosen, then parameters won’t be saved, and the screen will jump back to the main menu interface.

After successfully saving the parameters, press to exit to the main menu. The manual control mode will reset upon restart of the controller.

! Light Control Interface Press or to navigate to the sub-‐menu options. When the inverse cursor rest on Light On / Off, press to enter into the light control screen.

Press or to move between the adjustable parameters. The inverse cursor should move among every parameter. Press or to change

the parameters as needed. Pressing will move the inverse cursor to the

right. Conversely, pressing will move it to the left. Pressing continuously will jump back to the main menu screen. When the inverse cursor rests at some parameter, the contents of the parameter can be modified. To modify a parameter, press to increase the current parameter, or press

to reduce it. Settings can be saved by pressing until the last adjustable parameter is reached, in this case will be the bottom corner Delay. Press or to choose between Save or Cancel. The inverse cursor will rest on the selected option. Press to confirm the selection. If the Save option is chosen, then the parameters will be saved. If Cancel was chosen, then the parameters will not be saved, and the screen will jump back to the main

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menu interface. When saving, the controller will check and confirm valid parameters. If the parameters are correctly set, and success message will appear as shown below:

If the parameters are correctly set, and success message will appear as shown below:


! Light and timer control Interface Press or to navigate to the sub-‐menu options. When the inverse cursor rests on Light On +Timer, press to enter into the light control plus time control interface screen.

Press or to move between the adjustable parameters. The inverse cursor should move among every parameter. Press or to change

the parameters as needed. Pressing will move the inverse cursor to the

right. While pressing will move it to the left. Pressing continuously will jump back to the main menu screen. When the inverse cursor rests at some parameter, the contents of the parameter can be modified. To modify a parameter, press to increase the current parameter, or press to

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reduce it. Settings can be saved by pressing until the last adjustable parameter is reached, in this case will be the “Work Time”. Press or

to choose between Save or Cancel. The inverse cursor will rest on the selected option.

Press to confirm the selection. If the Save option is chosen, then the parameters will be saved. If Cancel was chosen, then parameters won’t be saved, and the screen will jump back to the main menu interface. When saving, the controller will check and confirm valid parameters. If the parameters are correctly set, and success message will appear as shown below:


Note: when the “OFF” time is later than local sunrise time, the controller will turn off the load output at the sunrise time.

! Time control interface Press or to navigate to the sub-‐menu options. When the inverse cursor rest on Time, press to enter into the time control screen.

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The first screen in Time control interface is “Time Control 1” as shown above.

Press or to move between the adjustable parameters. The inverse cursor should move among every parameter. Press or to change the parameters as needed. Once Time Control 1 settings are adjusted, press

continuously until “Time Control 2” is reached:

When Double is chosen as time control mode, then “Time Control 2” is

adjustable. Press or to move between the adjustable parameters. The inverse cursor should move among every parameter. Press or to change the parameters as needed. When Single is chosen as time control mode, only parameters of Time Control 2 can be modified.

*Note: When both of the timers are on, Time Control 2 cannot have the same parameters as Time Control 1. Settings can be saved by pressing until the last adjustable parameter is reached, in this case will be after choosing between Double or Single time control mode. Press or to choose between Save or Cancel. The inverse cursor will rest on the selected option.

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Press to confirm the selection. If the Save option is chosen, then the parameters will be saved. If Cancel was chosen, then parameters won’t be saved, and the screen will jump back to the main menu interface. When saving, the controller will check and confirm valid parameters. If the parameters are correctly set, and success message will appear as shown below:


5.6 Nominal Parameter Interface

In the main menu interface, press or to navigate to the menu options. When the inverse cursor rests on 5. Rated Value, press to enter into the nominal

parameter interface. Once again, press or to move between the

adjustable parameters. Pressing will move the inverse cursor to the right. While pressing will move it to the left. If the inverse cursor is at the very beginning,

press to jump back to the main menu screen. When the inverse cursor rests at some parameter, the contents of the parameter can be modified. To modify a parameter, press to increase the current parameter, or press to reduce it. In this screen the battery type and capacity can be modified. The battery capacity ranges from 1-‐999 AH.

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Settings can be saved by pressing until the last adjustable parameter is reached, in this case will be the battery Type. Press or to choose between Save or Cancel. The inverse cursor will rest on the selected option.

Press to confirm the selection. If the Save option is chosen, then the parameters will be saved. If Cancel was chosen, then parameters won’t be saved, and the screen will jump back to the main menu interface. When saving, the controller will check and confirm valid parameters. If the parameters are correctly set, a success message will appear as shown below:


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5.7 Factory Reset

In the main menu interface, press or to navigate to the menu options. When the inverse cursor rests on 6. Factory Reset, press to enter into the Factory Reset interface.

Press or to choose between NO or YES. The inverse cursor will rest on the selected option.

Press or to confirm the selection or Cancel. The inverse cursor will rest on the selected option. Press to confirm the selection. If the OK option is chosen, then the parameters will be saved. If Cancel was chosen, then parameters won’t be saved, and the screen will jump back to the main menu interface.


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6. Protections, Troubleshooting and Maintenance

5.1 Protection

The ViewStar series charge controller has the following protection features:

! PV Array Short Circuit If a PV array short circuit occurs, clear it to resume normal operation.

! Load Overload If the load current exceeds the maximum load current rating, the controller will disconnect the load. Re-‐applying power or pressing the setting button will clear up the overloading fault.

! Load Short Circuit Fully protected against load wiring short-‐circuit after one automatic load reconnect attempt. Reapplying power or pressing the setting button will clear the fault.

! PV Reverse Polarity Full protection against PV reverse polarity, no damage to the controller will result. Correct the wire connection to resume normal operation.

! Battery Reverse Polarity Full protection against battery reverse polarity, no damage to the controller will result. Correct the wire connection to resume normal operation.

! Damaged Local Temperature Sensor If the temperature sensor short-‐circuited or damaged, the controller will be charging or discharging at the default temperature 25°C (77°F) to prevent the battery damaged from overcharging or over discharged.

! Overheating Protection If the temperature of the controller’s hear sink exceeds 85°C (185°F), the controller will automatically start the overheating protection. It will recover after the temperature drops to 80°C (185°F).

! High Voltage Transients PV is protected against high voltage transients. In lightning prone areas, additional external suppression is recommended.

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5.2 Troubleshooting Faults Possible reasons Troubleshooting

Charging LED indicator off during daytime when panels are in direct sunlight and the controller shows

“disconnect”

PV array disconnection

Check that PV and battery wire connections are correct and tighten the screws.

Charging LED indicator is off and PV monitoring interface shows “Over

Current”

Charging current is more that the nominal current value

Please check whether the solar panel array matches with the nominal parameters of controller. When Charging current reaches 1.05-‐1.25 times, 1.25-‐1.5 times and 1.5 times more than nominal value, controller will automatically disconnect the loads in 60 seconds, 5 seconds and 1 second, respectively. The controller will check every 60 seconds, and will automatically reconnect the charging circuit if the current is below is nominal value.

Charging and discharging circuit is off and the PV monitoring interface shows Measure Err, MOS-‐I Short, MOS-‐C Short, MOS Break.

MOS-‐I or MOS-‐C might be damaged.

Please restart controller, if the fault still exists, immediately disconnect the system and contact the supplier.

Load output does not work and the BATT of monitoring interface shows LVD.

Battery over discharged

The controller cuts off the output automatically when the battery is over discharged. The charge controller will resume the load output once the battery is fully charged.

Charging and discharging circuit is off and the BATT monitoring interface shows OVD.

Battery over voltage Measure the battery voltage, and inspect if it is too high. Disconnect the solar input, and contact the supplier.

Charging and discharging circuit is off and the BATT monitoring interface

shows Over Temp.

Operating ambient temperature (local temperature sensor) or battery temperature (remote temperature sensor) is sensing high temperatures

When operating ambient temperature or battery temperature reaches more than 85 °C (190.48 °F), controller will automatically cut off the input and output circuit. When the temperature is less than 75 °C (167 °F), the controller will automatically recover the connection of the input and output circuit.

Charging and discharging circuit is off and the BATT monitoring interface

shows Error.

Battery voltage fault Please restart controller, if the fault still exists, immediately disconnect the system and contact the supplier.

Table 5-‐1 Troubleshooting

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Faults Possible reasons Troubleshooting Discharging circuit is off and the LOAD monitoring interface shows

OverLoad.

Load power surpasses nominal power

Please reduce the number of electric loads. When the power at the output reaches 1.05-‐1.25 times, 1.25-‐1.5 times and 1.5 times more than nominal value, controller will automatically shut off the loads in 60 seconds, 5 seconds and 1 second, respectively. It will be reactivated after a delay of 5 seconds for the first time, 10 seconds for the second time, 15 seconds for the third time, 20 seconds for the fourth time and 25 seconds for the fifth time. After 5th time, push the ENTER key and controller should recover the output after 10 seconds. In the process of the 5-‐time reactivation, if the output is recovered manually, the 5-‐time reactivation will be circulated again.

Discharging circuit is off and the LOAD monitoring interface shows

Short.

Load short Please check carefully the load connections condition. It will be reactivated after a delay of 5 seconds for the first time, 10 seconds for the second time, 15 seconds for the third time, 20 seconds for the fourth time and 25 seconds for the fifth time. After 5th time, push the ENTER key and controller should recover the output after 10 seconds. In the process of the 5-‐time reactivation, if the output is recovered manually, the 5-‐time reactivation will be circulated again.

Charging and discharging circuit is off and the LOAD monitoring interface shows MOS-‐I Short Error.

Discharging switching circuit might damaged.

Please restart controller, if the fault still exists, immediately disconnect the system and contact the supplier.

Charging and discharging circuit is off and the LOAD monitoring interface shows OverTemp.

Cooling fins of controller are overheating

When the temperature of cooling fins of the controller reach more than 85 °C (190.48 °F), controller will automatically cut off the input and output circuit. When the temperature is less than 75 °C (167 °F), the controller will automatically recover the connection of the input and output circuit.

Table 5-‐1 Continued 5.3 Maintenance The following inspections and maintenance tasks are recommended at least two times per year for best controller performance:

• Check that the controller is securely mounted in a clean and dry environment. • Check that the airflow and ventilation around the controller is not blocked. Clear

all dirt or fragments on the heat sink.

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• Check all the exposed wires to make sure insulation is not damaged for serious sun exposure, frictional wear, dryness, insects or rats etc. Maintain or replace the wires if necessary.

• Tighten all the terminals. Inspect for loose, broken, or burnt wire connections. • Check and confirm that the LED or LCD digital display is consistent. Pay attention

to any troubleshooting or error indication. Take necessary corrective action. • Confirm that all the system components are ground connected tightly and

correctly. • Confirm that all the terminals have no corrosion, insulation damage, high

temperature or burnt/discolored sign, tighten terminal screws to the suggested torque

• Inspect for dirt, insects and corrosion, and clear up. • If there is a lightning arrester, check that it’s in good condition. Replace a new

one in time to avoid damaging of the controller and other equipment.

Warning: Risk of electric shock! Make sure all the power is turned off before above operations, and then follow the corresponding inspections and operations.

7. Technical Specifications

Electrical Parameters Description Parameter

Nominal System Voltage 12VDC/24VDC Auto recognition Rated Charge Current VS1024N: 10A, VS2024N: 20A, VS3024N: 30A Rated Discharge Current VS1024N: 10A, VS2024N: 20A, VS3024N: 30A Maximum Battery Voltage 32V Max. Solar Input Voltage* 48VDC Max. PV Input Power 10A: 120W (12V), 240W (24V)

20A: 240W (12V), 480W (24V) 30A: 360W (12V), 720W (24V)

Self-‐consumption** ≤18mA Charge Circuit Voltage Drop ≤ 0.24V Discharge Circuit Voltage Drop ≤ 0.15V Communication TTL232 / 8 pin RJ45 Remote Temperature Sensor 2ERJ-‐3.81 Ground VSxxxx24N: Negative ground Battery Type Gel, Sealed (AGM), and Flooded Table 7-‐1 Electrical Parameters *Array voltage should never exceed maximum PV input voltage. Refer to the solar module documentation to determine the highest expected array Voc (Open Circuit Voltage) as defined by the lowest expected ambient temperature for the system location.

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Charging Parameters

Table 7-‐2 Battery Parameters

Boost Voltage

Default 14.2V; x2/24V 14.4V; x2/24V 14.6V; x2/24V

Max 15V; x2/24V 15V; x2/24V 15V; x2/24V

Min 13.8V; x2/24V 13.8V; x2/24V 13.8V; x2/24V

Float Voltage Default 13.8V; x2/24V 13.8V; x2/24V 13.8V; x2/24V

Max 14.2V; x2/24V 14.2V; x2/24V 14.2V; x2/24V

Min 13.2V; x2/24V 13.2V; x2/24V 13.2V; x2/24V

Boost Return Voltage Default 13.2V; x2/24V 13.2V; x2/24V 13.2V; x2/24V

Max 13.5V; x2/24V 13.5V; x2/24V 13.5V; x2/24V

Min 12.7V; x2/24V 12.7V; x2/24V 12.7V; x2/24V

Low Voltage Reconnect Default 13.2V; x2/24V 13.2V; x2/24V 13.2V; x2/24V

Max 13.5V; x2/24V 13.5V; x2/24V 13.5V; x2/24V

Min 12.7V; x2/24V 12.7V; x2/24V 12.7V; x2/24V

Under Voltage Recover Default 12.2V; x2/24V 12.2V; x2/24V 12.2V; x2/24V

Max 12.6V; x2/24V 12.6V; x2/24V 12.6V; x2/24V

Min 11.8V; x2/24V 11.8V; x2/24V 11.8V; x2/24V

Under Voltage Warning Default 12.0V; x2/24V 12.0V; x2/24V 12.0V; x2/24V

Max 12.4V; x2/24V 12.4V; x2/24V 12.4V; x2/24V

Min 11.6V; x2/24V 11.6V; x2/24V 11.6V; x2/24V Default 11.1V; x2/24V 11.1V; x2/24V 11.1V; x2/24V

Control Parameter Battery type Gel Sealed Flooded

High Volt Disconnect

Default 16.0V; x2/24V 16.0V; x2/24V 16.0V; x2/24V

Max 17.0V; x2/24V 17.0V; x2/24V 17.0V; x2/24V

Min 15.0V; x2/24V 15.0V; x2/24V 15.0V; x2/24V

Charging Limit Voltage Default 15.5V; x2/24V 15.5V; x2/24V 15.5V; x2/24V

Max 16.0V; x2/24V 16.0V; x2/24V 16.0V; x2/24V

Min 14.0V; x2/24V 14.0V; x2/24V 14.0V; x2/24V

Over Voltage Reconnect Default 15.0V; x2/24V 15.0V; x2/24V 15.0V; x2/24V

Max 16.0V; x2/24V 16.0V; x2/24V 16.0V; x2/24V

Min 14.0V; x2/24V 14.0V; x2/24V 14.0V; x2/24V

Equalization Voltage Default N/A 14.6V; x2/24V 14.8V; x2/24V

Max N/A 15.2V; x2/24V 15.2V; x2/24V

Min N/A 14.2V; x2/24V 14.2V; x2/24V

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Low Voltage Disconnect Max 11.8V; x2/24V 11.8V; x2/24V 11.8V; x2/24V

Min 10.5V; x2/24V 10.5V; x2/24V 10.5V; x2/24V

Discharging Limit Voltage Default 10.8V; x2/24V 10.8V; x2/24V 10.8V; x2/24V

Max 11V; x2/24V 11V; x2/24V 11V; x2/24V

Min 10.5V; x2/24V 10.5V; x2/24V 10.5V; x2/24V Equalize Duration N/A N/A 2 hours 2 hours

Boost Duration N/A 2 hours 2 hours 2 hours Table 7-‐2 Continued

Threshold Voltage

Description Parameter NTTV (Night Time Threshold Voltage) Default 5V; x2/24V

Max 10V; x2/24V Min 1V; x2/24V

DTTV (Day Time Threshold Voltage) Default 6V; x2/24V Max 10V; x2/24V Min 1V; x2/24V

Table 7-‐3 Threshold Voltages

Temperature Compensation

Description Parameter Temperature Compensation Coefficient (TEMPCO)*

Default -‐3mV/°C/2V (25°C ref) Max 0mV/°C/2V Min -‐9mV/°C/2V

Table 7-‐4 Temperature Compensation *Compensation of equalize, boost, float and low voltage disconnect voltage

Environmental Parameters

Environmental Parameter Working Temperature Range -‐35 °C to +55 °C (-‐31 °F to +131 °F) Storage Temperature Range -‐35 °C to +80 °C (-‐31 °F to +176 °F)

Enclosure IP30 Table 7-‐5 Environmental Parameters

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Mechanical Parameters

Mechanical Parameter Terminal VS1024N: 4 mm2 (up to #12 AWG)

VS3024N: 16 mm2(up to #6 AWG) Weight VS1024N: 0.44 lbs.

VS3024N: 1.54 lbs. Table 7-‐6 Mechanical Parameters

Dimensions

VS1024N

VS2024N VS3024N

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8. Warranty By acquiring the products of RNG Group Inc. ("Renogy"), you have purchased quality. As a sign of confidence in this quality, we are pleased to grant you the following warranties and guarantees for our photovoltaic products.

LIMITED WARRATNY: Renogy warrants this product will be free from defects in material and manufacturer for the following periods from the date of purchase:

• Two (2) years on ViewStar series charge controllers

This warranty extends only to the original purchaser. The Customer’s sole and exclusive remedy and the entire liability of Renogy, its suppliers and affiliates for breach of the warranty is, either to replace the Product or component parts or to refund the purchase price of the Product. This warranty does not cover labor. Repaired or replaced products are warranted for the remainder of the original warranty period only. No employee, agent, dealer or other person is authorized to give any warranties on behalf of Renogy not expressly set forth in this limited warranty.

The warranty does not cover failures result from incorrect handling, product modifications, installation, conversion or additions, supplements, operation, natural elements, excessive or deficient energy supply, chemicals, the effect of solid bodies or deliberate damage. If Renogy determines that the problem with the Product is not due to a manufacturing defect in Renogy’s workmanship or materials, or otherwise does not qualify for warranty repair, then the Customer will be responsible for the costs of all necessary repairs and expenses incurred by Renogy.

The warranty shall be asserted with Renogy in writing enclosing a copy of the invoice and a description of the defect/loss of performance within the warranty period. Renogy shall accept no returns of modules without the previous written request for this. Within five (5) business days of the date of notification, Renogy will provide the Customer with an RMA number and the location to which the Customer must return the defective Product. Any Product returned for warranty service shall be shipped at the expense and risk of the Customer. The Customer must return the entire Product (or, if authorized by Renogy, the defective component parts), within fifteen (15) days after issuance of the RMA number. Renogy will be under no obligation to accept any returned Product that does not have a valid RMA number. All parts that Renogy replaces shall become Renogy’s property on the date Renogy ships the repaired Product or part back to the Customer. Renogy will use all reasonable efforts within thirty (30) days of receipt of the defective Product to repair or replace such Product. If a warranty claim is invalid for any reason, the Customer will be charged at Renogy’s then-‐current rates for services performed and will be charged for all necessary repairs and expense incurred by

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Renogy. If Renogy determines that a warranty claim is valid, it will ship the repaired or replaced Product to Customer at Renogy’s cost.

RENOGY MAKES NO OTHER WARRANTIES OR CONDITIONS, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OR CONDITION OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR ANY IMPLIED WARRANTY OR CONDITION ARISING OUT OF A COURSE OF DEALING, CUSTOMER OR USAGE OF TRADE.

LIMITATION OF LIABILITY

UNDER NO CIRCUMSTANCES WILL RENOGY OR ITS AFFILIATES OR SUPPLIERS BE LIABLE OR RESPONSIBLE FOR ANY LOSS OF USE, INTERRUPTION OF BUSINESS, LOST PROFITS, LOST DATA, OR INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES OF ANY KIND REGARDLESS OF THE FORM OF ACTION, WHETHER IN CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF RENOGY OR ITS AFFILIATE OR SUPPLIER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Some states do not allow the exclusion or limitation of incidental or consequential damages, so these limitations may not apply to you. Neither Renogy nor its affiliates or suppliers will be held liable or responsible for any damage or loss to any items or products connected to, powered by or otherwise attached to the Product. The total cumulative liability to Customer, from all causes of action and all theories of liability, will be limited to and will not exceed the purchase price of the Product paid by Customer. This warranty gives you specific legal rights and you may also have other legal rights that vary from state to state.

Documents

ViewStar)Series))oldbluesblog.com/files/PWM30LCD-Viewstar.pdfViewStar)Series)) VS1024N,)VS2024N,)VS3024N! Pulse!Width!Modulation!Solar!Charge!Controller!Manual!! 14288)Central)Ave.,)Suite)A)Chino,)CA)91710)