mppt control 40 amp 24 volt solar panel controller with USB and sensor

 

Main picture of 40 amp 24 volt solar panel controller

 

 

 

  Tracer-A series is based on common positive design and advanced MPPT control algorithm, with LCD displaying running status, this product is artistic, economical and practical.

  With MPPT control algorithm, in any situation, products of this series can fast and accurately track out the best maximum power point (MPP) of photovoltaic array, in order to obtain the maximum solar energy in time, which remarkably improves energy efficiency. There is dual display function: local LCD panel or remote meter (needs extra MT50). With Modbus communication protocol interface, it is convenient for customers to expand applications and monitor in various fields like telecommunication base station, household system, street lighting system, wilderness monitoring system, etc.

  All-round electronic fault self-test function and enhanced electronic protection function could furthest avoid damages on system components resulting from installation errors or system failures.

 

Features:

Advanced Maximum Power Point Tracking (MPPT) technology, wiht efficiency no less than 99.5%

* High quality components, perfecting system performance, with maximum conversion efficiency of 98%.

* Ultra-fast tracking speed and guaranteed tracking efficiency.

* Accurately recognizing and tracking of multiple power points.

* Reliable automatic limit function of maximun PV input power, ensuring no overload under any circumstance.

* Wide MPP operating voltage range.

* 12/24VDC automatically identifying system voltage.

* LCD panel display design, dynamically displaying tool’s operating data and working condition.

* Multiple load control modes: manual control, light ON/OFF, light On+Timer and test mode.

* Support 3 charging preprogram options: Sealed, Gel, Flooded. 

* Battery temperature compensation function.

* Real-time energy statistics function.

* With RS-485 communication bus interface and Modbus communication protocol, it is available to meet various communication requirement in different situations.

* Availble for network module (eBox--01)with protocol TCP/UDP/SNMP, to realize connection to internet.

* Available for PC monitoring and external display unit connecting like MT50 and so on, realizing real-time data checking and parameters setting.

* Support software upgrade.

 

Electronic protections:

• PV reverse polarity protection               

• PV short circuit protection

• PV over current alarm protection           

• Battery overcharge protection                

• Battery over discharge protection          

• Battery reverse polarity protection             

• Load short circuit protection                   

• Load overload protection

 

Figure 1-1 Tracer-A Series Characteristics

1 –Mounting hole sizeΦ5

2 –Select Button

3 –Connection for a RTS (Remote Temperature Sensor) to remotely detect battery temperature.

4 –Solar Module Terminals: Connect solar modules.

5 –Battery Terminals: Connect batteries.

6 –Load Terminals: Connect loads.

7 –RS-485 Port (RJ45 interface): Connect with PC or MT50 to monitor or update firmware.

8 –Product shell

9 –Enter Button

10 – LCD

 

Technical Specifications

• Electrical Parameters

Description	Parameter
Nominal system voltage	12VDC / 24VDC Auto work
Rated charge current	Tracer4210A  40A
Rated discharge current	Tracer4210A   40A
Battery voltage range	9V~32V
Max. solar input voltage	100VDC
MPPT voltage range	VBAT +2V~90V (Voc. less than 100V)
Max. PV input power	Tracer4210A 520W(12V)  1040W(24V)
Self-consumption*	≤20mA(12V)  ≤16mA(24V)
Temperature compensate coefficient	-3mV/C/2V(default)
Communication	RS485(RJ45 interface)

 

• Environmental Parameters

Environmental	Parameter
LCD temperature range	-20Cto +70C
Ambient temperature range	-25Cto +45C
Storage temperature range	-35C to +80C
Humidity range	≤95%(NC)
Enclosure	IP30

 

• Mechanical Parameters (Tracer4210A)

Mechanical	Parameter
Dimension	252mm x 180mm x 63mm
Mounting dimension	210mm*171mm
Mounting hole size	Φ5
Power cable	10mm2
Weight	2.4kg

 

Annex I Conversion Efficiency Curves

 Illumination Intensity: 1000W/m2   Temp: 25ºC

  Model: Tracer4210A

 

    Solar Module MPP Voltage(17V,34V,68V) / Nominal System Voltage(12V)

 

Solar Module MPP Voltage (34V, 68V) / Nominal System Voltage(24V)

 

Maximum Power Point Tracking Technology

 

Due to the nonlinear characteristics of solar array, there is a maximum energy output point (Max Power Point) on its curve. Traditional controllers, with switch charging technology and PWM charging technology, can't charge to battery at the maximum power point, so can't harvest the maximum energy available from PV array, but the solar charge controller with Maximum Power Point Tracking (MPPT) Technology can lock on the point to harvest the maximum energy and deliver it to the battery.

 

 

The MPPT algorithm of our company continuously compares and adjusts the operating points to attempt to locate the maximum power point of the array. The tracking process is fully automatic and doed not need user adjustment.

 

As the Figure 1-2, the curve is also the characteristic curve of the array, the MPPT technology will 'boost' the battery charge current through tracking the MPP. Assuming 100% conversion efficiency of the solar system, in that way, the following formula is established:

 

  Normally, the VMp is always higher than VBat. Due to the principle of conservation of energy, the IBat is always higher than IPV. The greater the discrepancy between VMp &VBat, the greater the discrepancy between IPV& IBat. The greater the discrepancy between array and battery, the bigger reduction of the conversion efficiency of the system, thus the controller's conversion efficiency is particularly important in the PV system.

 

  Figure 1-2 is the maximum power point curve, the shaded area is charging range of traditional solar charge controller (PWM Charging Mode), it can obviously diagnose that the MPPT mode can improve the usage of the solar energy resouce. According to our test, the MPPT controller can raise 20%-30% efficiency compared to the PWM controller. (Value may be fluctuant due to the influence of the ambient circumstance and energy loss.)

Figure 1-2 Maximum Power Point Curve

 

  In actual application, as shading from cloud, tree and snow, the panel maybe appear Multi-MPP, but in actually there is only one real Maximum Power Point. As the below Figure 1-3 shows:

 

                     

 

Figure 1-3 Multi-MPPT Curves

 

  If the program works improperly after appearing Multi-MPPT, the system will not work on the real max power point, which may waste most solar energy resources and seriously affect the normal operation of the system. The typical MPPT algorithm, designed by our company, can track the real MPP quickly and accurately, improve the utilization rate of the array and avoid the waste of resources.

 

Connection:

Battery Charging Stage

 

The controller has a 3 stages battery charging algorithm (Bulk Charging, Constant Charging and Float Charging) for rapid, efficient, and safe battery charging.

 

 

A) Bulk Charging

 

In this stage, the battery voltage has not yet reached constant voltage (Equalize or Boost Voltage), the controller operates in constant current mode, delivering its maximum current to the batteries (MPPT Charging). 

 

B) Constant Charging

 

When the battery voltage reaches the constant voltage setpoint, the controller will start to operate in constant charging mode, this process is no longer MPPT charging, and in the meantime the charging current will drop gradually, the process is not the MPPT charging. The Constant Charging has 2 stages, equalize and boost. These two stages are not carried out constantly in a full charge process to avoid too much gas precipitation or overheating of battery.

 

C) Boost Charging

 

The Boost stage maintain 2 hours in default, user can adjust the constant time and preset value of boost voltage according to demand.

 

The stage is used to prevent heating and excessive battery gassing.

 

 Remote Meter (Model:MT50)

The digital remote meter displays system operating information, error indications, and self-diagnostics. Information displayed on a backlit LCD display is easy to read and large buttons make navigating the meter menus easy. The meter can be flush mounted in a wall or frame. The MT50 (standard edition) is supplied with one 2 meter long cable. The MT50 connects the Tracer-BN series with the RJ45 interface.

 

Attention:

1. If your address is remote area by DHL or FedEx, then we will send by other express

2. We can low down some price for less customs duty when shipping, please leave the value of product you want us to declare, otherwise,we will declare by our experience; and we will not bear the high tariff cost,buyer must bear the reponsibility by themselves.

3. The Customers from Brazil please must leave CPF number or CNPJ number, otherwise, the shipping company will refuse the transport;

   

 

 

Payment:

1. We accept Alipay, West Union, T/T, 

2. Payment must be made within 3 days of order.

3.  If you can't check out immediately after auction close, please wait for a few minutes and retry.

Shipment:

1. We guarantee to ship out within 48 hours after payment confirmation (except Holiday).

2. Delivery time is approx. 7 to 15 business days (excluded Saturday & Sunday, Public Holiday) to most US/UK/AU destinations .

3. EMS express shipping usually takes 3-7 working days dependent on the country delivered to. We are not responsible for any accidents, delays or other issue that are the responsibility of the shipping service.

4. In order to ensure you receive you order tax free upon import, we will declare it as a 'GIFT' with a lower value. This lower price does not reflect the total price you paid or the market value of the product and may not apply to countries with different tariff rules. Any import charges or fees are the buyer's responsibility.

5. Please contact us if you don't receive it over above 4 weeks, we will solve this problem in a very short time.

6. All our items will be shipped to buyer's Wholesales Alibaba address please confirms your address on Alibaba before you bid. Please make sure the shipping address is correct. We are not responsible for any wrong or undeliverable addresses.

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Return:

1. We provide 1 years warranty. If the item is defective, please notify us within 3 days of delivery.

2. All items must be returned in their original condition, in order to qualify for a refund or exchange of goods.

3. But shipping fee and insurance is not refundable.

4. Items returned after 7 days of delivery are only eligible for repair.

5. The buyer is responsible for all shipping costs incurred.

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