Ldsolar LD2420C User Manual

0

Instruction of Solar Charge

Controller

User’s Manual

12V/24V 10A/20A

Dear Users:

Thank you for selecting our product. Please read this

manual carefully before you use this product.

1

Major Functions

The controller is for off-grid solar system and

control the charging and discharging of the battery.

Main function is protecting battery. The intelligent

charging process has been optimized for long battery

life and improved system performance.

The features are listed below:

 Automatic Identification System Voltage, 12V 24V

auto recognition

 Humanized LCD displaying and double button

operation of man-machine interface.

 Completed technical data for setup and modify.

 High efficiency intelligent PWM 3stage charging

 The load control mode can be selected, the timer

function can be reset for street light at night.

 Reliable over voltage protection 、 short circuit

protection 、 over load protection 、 overcharge

protection、 over-discharge protection.

 Accurate temperature compensation, correcting the

2

Important Safety Information

charging and discharging voltage automatically,

improving the battery lifetime.

 Roundly reverse connected protection.

 Solar Panels, Battery, Solar Charge Controller positive

poles are all connected together, adopting negative

MOSFET in series control circuit.

 It is better to install the controller in the room. If

installed the controller outside, please keep the

environment dry, avoid direct sunlight.

 The controller will be hot in process of working, please

keep the environment ventilation, away from

flammable.

 The open circuit voltage of solar panel is too high,

(especially 24V system), please take care.

 The battery has acidic electrolysis, please put on

goggles during installation. If you accidentally

exposed to the electrolysis, please rinse with water.

 The battery has huge power, prohibit any conductor

3

The suggestion of using

short circuit the positive and negative pole of battery.

Suggest to adding a fuse between battery and

controller. (Slow motion type, the action current of the

fuse should be 1.5 times rated current of controller.)

 The controller could detect the temperature of

environment to adjust the voltage of charging, so that

the controller should be closed to battery as near as

possible.

 Recommend system current density of cables less

than 3A/mm2.

 Try to use multi strand copper wire in order to

connecting with the terminal firmly. Loose power

connection and/or corroded wires may result in

resistive connections that melt wire insulation, burn

surrounding materials or even cause fire.

 The battery should be full charged each month. Or the

battery will be destroyed.

4

The feature of LCD graphic symbol

1. The default night display of controller: When the solar

panel input voltage have been detected by controller

less than sensor identification point voltage, this

graphic symbol will be light.

2. The default daytime display of controller: When the

solar panel input voltage have been detected by

controller more than sensor identification point voltage,

this graphic symbol will be light.

3. The indicator of PV array parameter: When the solar

panels data was displaying, this graphic symbol will be

light. For example the voltage of solar panel.

5

4. The indicator of battery parameter: When the battery

parameter was displaying, this graphic symbol will be

light. For example the voltage of battery, temperature

of battery.

5. The indicator of load parameter: When the load

parameter was displaying, this graphic symbol will be

light.

6. System Voltage: When the LCD shows different system

voltage, the controller will adjust the technical data

automatically.

7. Numerical Display Area

8. Timer Setting Function

9. Switch Graphic Symbol.

10. Unit Symbol Value

11. Warning: When there is fault, this graphic symbol will

be light.

12. The indicator of Load status: Load on， Load off.

13. The indicator of Output power: When the load terminal

6

Installation Instructions

have output, this graphic symbol will be light.

14. The indicator of capacity of battery: When the battery

was in different capacity, the strip-type will show.

15. The indicator of charge status: When the controller is

charging, the symbol will be light, float charge will be

flash, no charging no display.

 Controller Fixed

1) The controller should be installed well-ventilated place,

avoid direct sunlight, high temperature and do not

install in location where water can enter the controller.

2) Please select correct screw to fix the controller on the

wall or other platform. Screw M4 or M5, Screw cap

diameter less than 10mm.

3) Please reserve enough space between the wall and

controller, to allow for cooling and cable connection.

4) The mounting holes distance is 155.8mm*63mm,

diameter of the hole is 5mm.