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DTM4840

40A MPPT Solar Controller

Product Description

DTM4840 is a high-efficiency MPPT solar charge&discharge controller, charging adopts advanced maximum power point tracking algorithm, can quickly and accurately track the maximum power point of photovoltaic cells, full access to the energy of the photovoltaic panels, and improve energy utilization efficiency of photovoltaic power generation system. The discharge part can be loaded with 30A DC system, and it can be discharging while charging, used flexibly.

This product has the simple HMI interface, can switch between Chinese and English, multiple buttons operation, it’s convenient to check system running status, control parameters, the fault log and other information in real time, at the same time, the user can modify the control parameters according to the demand. Various detection and protection functions can fully guarantee the normal work of the product.


Product Features

1. Advanced maximum power point tracking algorithm, can fast track the maximum power point of solar panel, MPPT tracking efficiency is up to 99.9%;

2. Multi-channel synchronous rectification technology can improve charging efficiency to 98%;

3. Multi-peak tracking technology, can also track the real maximum power point when solar panel have multiple peak of the I-V curve;

4. Dual-core processing, improve the processing speed and reliability of the system;

5. 12/24/36/48VDC automatically identifying system voltage or user-defined working voltage;

6. Support 4 charging program options: Sealed, Gel, Flooded and User;

7. 4-Stage charging mode, increase battery lifetime effectively;

8. Four load control modes: light control, manual control, light control + timer, time control, 30A DC output;

9. LCD display function, can monitor the operation status of the controller in real time, check fault log/ work log/ historical operation info, and support to modify control parameters;

10. LCD display support Chinese and English two languages, meet different user demands;

11. Monitor the temperature of device in real time, when the temperature is too high, the charging current will be reduced to ensure the controller temperature is within safe and reliable range;

12. Charging current limit function, when the solar panel power exceeds rated power, the controller will be limited to work at rated power to ensure not overload;

13. Battery temperature compensation function;

14. External battery voltage sampling function, detect battery real voltage, exempted from the effect of line loss;

15. Battery protection: over charge, over discharge, over temperature; load protection: short circuit, over load;

16. PV reverse polarity protection, battery reverse polarity protection, TVS lighting protection.

Parameter Name

Parameter Value

Default

Model

DTM4840

System voltage

12V/24V/36V/48V Auto

Charge current

40A

Discharge current

30A

No-load loss

1.2W~2.0W

Max. solar panel voltage

<150V

Max. solar panel

12V/400W

24V/800W

36V/1200W

48V/1600W

Over-voltage disconnect voltage

9~17V

16.0V

Charging limits voltage

9V~17V

15.0V

Equalize charging voltage

9V~17V

14.6V

Boost charging voltage

9V~17V

14.4V

Float charging voltage

9V~17V

13.8V

Boost charging recovery voltage

9V~17V

13.2V

Over-discharge warning recovery voltage

9V~17V

12.6V

Under-voltage warning recovery voltage

9V~17V

12.2V

Under-voltage warning voltage

9V~17V

12.0V

Over-discharge warning voltage

9V~17V

11.0V

Boost charging time

10min~240min

120min

Equalize charging time

0min~240min

120min

Equalize charge interval

0~180D

30D

Temperature Compensation coefficient

0~-5mV

-3mV//2V

Load mode

Light control, manual control, light control + timer, time control

Manual control on

Temperature compensation coefficient

0~-5mV

-3mV//2V

Conversion efficiency

98%

MPPT tracking efficiency

>99%

Working temperature

-30~50

Storage temperature

-30~85

Wiring size

25mm2

Grounding

Negative grounded

Protection level

IP32

Weight

3.2kg

Dimensions

265*205*92mm

Altitude

3000m

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