NSTHAI NSC2024R User manual

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INSTRUCTION
MANUAL
NSC2024R Solar Light Controller
NSTHAI
☆ Design patent NO.：
201130028317.3
☆ Utility model patent NO.
：201120064092.1

เลขที่ 82/33 ซ.รัตนาธิเบศร์ 26/1 ต.บางกระสอ อ.เมือง จ.นนทบุรี 11000
โทร. 02-9657588 , 081-8465426 , 086-3411861 แฟกซ์ 02-9657599
E-Mail : [email protected] Website : http://www.nsthai.com

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NSC2024R (LS2024R)
Solar Light Controller
Installation and Operation Manual
Specification Summary
Nominal system voltage 12 / 24VDC*
Maximum PV input voltage 50V
Nominal charge / discharge current 20A
* The controller will recognize the system rated voltage when start up. If the battery
voltage is lower than 18V, it will recognize the system as 12V. If the battery voltage is
greater than 18V, it will recognize the system as 24V.
45 (1.77)
55 (2.16)
135 (5.31)
144 (5.67)
74.9 (2.95)

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1. Important Safety Information
Save These Instructions
This manual contains important safety, installation and operating instructions.
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.
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 it.
•Install external fuses/breakers as required.
•Disconnect the solar module and fuse/breakers near to battery before installing or adjusting the controller.
•Do not allow water to enter the controller.
•Confirm that power connections are tightened to avoid excessive heating from loose connection.
2. General Information
2.1 Product Overview
Thank you for selecting NSC series solar light controller that adopts the most advanced digital technique and
operates fully automatically. The Pulse Width Modulation (PWM) battery charging can greatly increase the lifetime
of battery. It has various unique functions and quite easy to use, such as:
•12/24V automatic recognition
•High efficient Series PWM charging, increase the battery lifetime and improve the solar system performance.
•Use MOSFET as electronic switch, without any mechanical switch
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.

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•Widely used, automatically recognize day/night.
•Digital LED menu, only one key solve all setting simply
•Intelligent timer function with 1-15 hours option
•Unique dual timer function, enhance the flexibility of street light system.
•Gel, Sealed and Flooded battery type option.
•Adopt temperature compensation, correct the charging and discharging parameters automatically and
improve the battery lifetime.
•Electronic protection: Overheating, over charging, over discharging, overload, and short circuit.
•Reverse protection: any combination of solar module and battery.
The controller is for off-grid solar system, especially in solar light system, and protects the battery from being
over charged by the solar module and over discharged by the loads. The charging process has been optimized for
long battery life and improved system performance. The comprehensive self-diagnostics and electronic protection
functions can prevent damage from installation mistakes or system faults.
Though the controller is easy to operate and use, please take your time to read this manual and become familiar
with it. This will help you make full use of all the functions and improve your solar PV system.
2.2 Product Features
Figure 2-1 characteristics
1 –Temperature Sensor
Measure ambient temperature and make temperature compensation for charging and discharging.
2 –Charging status LED indicator
An LED indicator that shows charging status and also indicates when battery voltage is higher than over voltage
disconnect voltage.
3 –Battery status LED indicator

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A LED indicator that shows battery status
4 –Battery type setting indicator
The indicator will be on when select battery type.
5 –Timer 2 setting indicator
The indicator will be on when set timer 2.
6 –Timer 1 setting indicator
The indicator will be on when set timer 1.
7 –LED digital display
Display the load work mode and status
8 –Setting button
Set load work mode and select battery type. (in manual mode used for load ON/OFF)
9 –Solar Module Terminals
Connect solar modules.
10 –Battery Terminals
Connect batteries.
11 –Load Terminals
Connect loads.
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.
•Uses 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.

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•Battery connection may be wired to one battery or a bank of batteries. The following instructions refer to a
singular battery, but it is implied that the battery connection can be made to either one battery or a group of
batteries in a battery bank.
•Select the system cables according to 3A/mm2current density
3.2 Mounting
NOTE: When mounting the controller, ensure free air through the controller heat sink
fins. There should be at least 6 inches (150 mm) 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 gassed can accumulate.
Step 1: Choose Mounting Location
Locate the controller on a vertical surface protected from direct sun, high temperature, and water. And make sure
good ventilation.
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 air flow.
Figure 3-1 Mounting and cooling
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 4.5mm holes in the marked locations.
Warm air
Cool air
150mm(5.9inches
)
150mm(5.9inches)

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Step 5: Secure Controller
Place the controller on the surface and align the mounting holes with the drilled holes in 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: The controller is a common positive ground controller.
CAUTION: Don’t 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 create loose and
resistive connections which may lead to excessive heating and/or fire.
Step1: Battery Wiring
WARNING: Risk of explosion or fire! Never short circuit battery positive (+) and
negative (-) or cables
Figure 3-2 Battery connecting
Battery
Fuse
150mm(5.9inches)
MAX

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Before battery is connected, make sure that battery voltage is greater than 6V so as to start up the controller. If
system is 24V, make sure battery voltage is not less than 18V. System voltage can only be automatically recognized
when controller start up for the first time.
When install fuse, make sure that the biggest distance between the fuse holder and the positive terminal of battery
is 150mm. Do not insert a fuse at this time. Confirm the connection correct and turn on the power.
Step 2: Load Wiring
The controller loads can be connected to such electrical equipments as lights, pumps, motors and others. Controller
offers power to loads through the battery voltage.
Figure 3-3 Load Wiring
Connect the positive (+) and negative (-) of loads to controller load terminals as shown in Figure 3-3. The load
terminal be exist voltage, connect carefully to avoid short circuit.
An in-line fuse holder should be wired in series in the load positive (+) or negative (-) wire as show in Figure 3-3.
Do not insert a fuse at this time. Confirm the connection correct and turn on the power.
If wiring the load connection to a load distribution panel, each load circuit should be fused separately. The total
load draw should not exceed the load rated current of controller.
Step 3: Solar wiring
WARNING: Risk of electric shock! Exercise caution when handling solar wiring. The
solar module(s) high voltage output can cause severe shock or injury. Be careful
operation when installing solar wiring.
Fuse
Load

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The controller can accept12V, 24V nominal off-grid solar module(s). Grid-tie solar module(s) may be used if the
open circuit voltage of solar module doesn’t exceed the Maximum PV input voltage of the controller. The solar
module(s) work voltage must be equal to or greater than the system voltage.
Figure 3-4 Solar wiring
Step 4: Confirm Wiring
Double-check the wiring in step1 through 3. Confirm correct polarity at each connection. Verify that all six
terminals are tightened.
Figure 3-5 System wiring review
Solar Module
Battery
Load
Solar Module
Fuse
150mm(5.9inches)
MAX

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Step 5: Install Fuse
Install a suitable fuse in each fuse holder in the following order:
1. Battery circuit
2. Load circuit
Step 6: Confirm power on
When battery power is applied and the controller starts up, the battery LED indicator will be green.
If the controller doesn't start up, or the battery status LED error exists, please refer to section 5 for troubleshooting.
4. Operation
4.1 PWM Technology (Series Pulse Width Modulation)
The controller adopts the advanced series pulse width modulation (PWM) charging mode. With range of 0-100%,
it can charge the battery quickly and stably under any condition of solar photovoltaic system. PWM charging mode
use automatic conversion duty ratio pulses to charge the battery. The battery can be fully charged safety and rapidly
with the pulse current. Intermissions make some oxygen and hydrogen generated by chemical reaction chemically
combined again and absorbed. It can eliminate concentration polarization and ohm polarization naturally and
reduce the internal pressure of the battery so that the battery can absorb more power. pulse current charging mode
makes battery have more time to react, which reduces the gassing volume and makes battery improve the
acceptance rate of charging current.
4.2 Battery Charging Information
Figure 4-1 PWM Charging mode