Material Code: 1.1.24.000194

LG Series Solar charge controller

LG30A / 45A Solar Charge Controller

User Manual

Dear user：

Many thanks for you choosing our product!

Please read the user instructions carefully before usage.

Version :1.01

The above information is subject to change without prior notice.

Attention

Warning：This controller is a high power device, please read the instruction before use, take extra care

when operating.

Safety notes:

Read the instruction and attention carefully before use

Do not disassembly and repair the controller freely

Avoid direct sunlight and pay attention to ventilation When installation

Install appropriate fuse or circuit breaker on the outside of the controller

Disconnect the external fuse or circuit breaker when wiring

Be careful to prevent short-circuit when installing the battery

To ensure adopt the correct wire diameter, connect firmly, fasten the wire after connection

Temperature resistance should be fixed on the battery,the othe end connect to the controller

Product Introduction

This controller is designed for DC power supply system, small and medium-sized pv modules power system, using a dedicated computer chip to realize the intelligent control, all chips adopt industrial level, can be used in harsh environment. Meanwhile system offers specific indication for the charge, load , sorts of failure and various protections such as short circuit, over-load, over charge, particular anti-reversed polarity protection and so on, the controller used computer chip to sample the parameter of the battery voltage, photovoltaic cell voltage, discharge current and environment temperature. According to the battery’s character, realized the accurate control to discharge rate, correction of the temperature compensation through special control model calculation.charging with the intelligent PWM dim way and charging compensation in accordance with the current temperature of the battery, compensation factor is 3mv/℃/unit.LCM could show all of the parameters and modes. Dial switch need to adjust if adopting different voltage system.

Feature

1.

2.

3.

The controller carried with LCM module which can display system status and parameters

Begin to ascending charging automatically when the voltage of battery below the ascending charging recover voltage

Temperature compensation become more accurate due to Double temperature sensors design,inner

4.

temperature sensor test the inner temperature of the controller， outer temperature sensor test the outer temperature of the controller.

The controller could figure out everyday’s power of charge and discharge which make user assess the controller and entire system more easily

5.

With the charging current overload protection function, the controller will reduce the charge current to protect the charging circuit after it surpass the rated current.

6.

7.

A equalizing charge every 30 days in order to prevent battery vulcanization

Industrial-grade chips and precision components makes the controller can operate in any harsh

8.

environment

Design of double MOS series control circuit and PWM dim control make the charging efficiency increased greatly

9.

The setting parameter possess the saving function which makes the parameter won’t be erased after losing the electricity and system become more reliable.

10.

Three kinds of load work mode: purely light-operated, light-operated+time controlled,long-term on mode.

Panel figure

Load Indication

Photovoltaic

Cell Indication

Parameter&LCM

Indication

Light Touch

Button

Photovoltaic

Cell

Battery Load

Temperature

Sensor

LG30A is similar to LG45A. For LG30A information, Pls refers to LG45A instruction.

External And Installation Dimension

180.68

138

180.68

138

4XØ3.2

∅5

94

PWM Solar Charge Contrller

+ + + -

Temp.

sense

+ + + Temp.

sense

154

147

73.5

180

73.5

LG30A ：

External Dimension ：180.68X115X72(mm)

Installation Dimension ：174X70(mm)

LG45A ：

External Dimension ：180.68X145X72(mm)

Installation Dimension ：174X97(mm)

Model

High Power Series

LG-4845A

A ：Recognized Automatically

45 ：Max current 45A

24 ：Apply to12 /24V System

48 ：Apply to12/24/36/48V System

Connection Instruction

1. Preparation of the wire

Adopt the wire matching the current , plan the length of wire, strip 5mm insulation of one side of the controller’s terminal and try to decrease the length of the connected wire so that a reduction in electrical loss.

2.

Battery connection

Pay attention to the pole + , - , do not connect reversely. If connect correctly, the controller will start to work or it’s necessary to check the wire connection and battery’s situation. Users could connect the system followed by the order showed in the below figure.

3.

Photovoltaic module connection

Pay attention to the pole + , - ,if sun light is tested, photovoltaic indicator will light on or it’s necessary

to check the connection.

4.

Load connection

Connect the load wire with the controller’s output terminal, the current can’t surpass the controller’s rated current and pay attention to the + , - pole, for avoiding damage to the device ,do not connect reversely

5.

Temperature sensor connection

Connect one side of the temperature sensor to controller, the other side to the battery. There must be a good thermal contact with the battery shell.

4

3

1

2

Temperature sensor

7

6

5

LCM Indication Instruction

The controller adopts segmentation LCM indicator which could show 7 items parameters

Overall Figure

Auto Recoginze Indictor

48V System Indictor

36V System Indictor

24V System Indictor

12V System Indictor

Param 2th Param 4th

Param 3th Param 1th

AUTO

48V

36V

24V

12V

8888

IN

KVW %

OUT

KAH ℃

！

Input Current Indicator

Output Current Indicator

Unit: K/A/H/ ℃

Unit: K/V/W/%

Solar Panel

Indicator

Battery

Indicator

Load

Indicator

Setting

Indicator

Abnormal

Indicator

Displayed page

Screen initialize firstly then show kinds of system’s parameters when power on.

1. Photovoltaic array current

This page shows the pv array real-time current

Current Real Time Vanlue

System Voltage 12V

Solar Array Sign

12V

0

.

0

A PV Array Current Value

2. Battery voltage

This page show the real-time battery voltage

Battery Voltage Real Time Value

Battery Sign

12V

14

.

0

V Battery Voltage Unit

Attention：Connection according to the order showed in the upper figure

3. Load current

This page show the real-time load current

12V

10

.

0

A

Load Sign

Load Current Unit

4. Battery temperature

This page show the real-time controller’s inner temperature

2 5

℃ .

12V

Temperature Unit

5 、Charge power on the day

This page show the real-time charge power on the day

0

.

0

IN

AH

12V

Charging Sign

Energy Unit

6 、Discharge power on the day

This page show the real-time discharge power on the day

12V

0

.

0

IN

AH

Discharge Sign

7 、Word mode

This page show the real-time work mode

02

12V

Mode Display

8、Fault warning

This page show the corresponding error code when system abnormal occurs,

return to normal display after cancel the error

3 3

12V

！

Error Code

Abnormal Sign

Mode operation and parameter browse

1 、Parameter preview

Click the button：switch to next display page

Long press the button：long press the button in non-work mode page start the auto

LCM switch display.

2 、Working mode setting

Positioning the work mode page according to the “parameter preview”

Long press button：long-press in work page,click to user’s required mode after the

number blink,long-press for a period of time to exit with saving the parameter

automatically,LCM switch to display again automatically after exit.

12V

02

Mode Display (twinkle)

Mode Bitmap

ATTENTION: switch automatically—It’s not necessary to participate for users,

LCM will swich to next page automatically every 3s.

Controller status

LED Light Indications Status Functions

Charging

Indication

Load

Indication

Always off

Always on

Twinkle slow

Twinkle fast

Always off

Always on

Twinkle slow

Twinkle fast

Night

Daytime

In charging

System over voltage

Load off

Load on

Overload

Short circuit

System voltage alternative

If the model which voltage set by manual, before setting, please kindly check the system voltage.

This controller support 12/24/36/48V system. Please choose the voltage before use

The model which voltage will recognized automatically,this dial switch not effect and the controller will recognize the battery voltage by itself.

1

ON

2

Truth Table

System

12V

24V

36V

48V

Position

System voltage

12v

24V

36V

48V

Dial switch state

Down Down

Down Up

Up Down

Up Up

Description

The right and left gear both turn to Upward.

Turn the left gear to Downward, Turn the right gear to Upward.

Turn the left gear to Upward, Turn the right gear to Downward

The right and left gear both turn to Upward.

System protection function description

1 、Overtemperature protection

Controller temperature exceed 90 ℃ will close the load and charging efficiency will decrease.

Temperature less than 85 ℃ will recover.

Battery temperature exceed 55 ℃ will close the load and charging will closed. Temperature less than

55 ℃ will recover.

2 、Charging protection

Decrease the charging efficiency when PV array charging current more than Rate charging current and less then 1.25 times of Rate charging current for 60s.

Decrease the charging efficiency when PV array charging current more than 1.25 and less then 1.5 times of Rate charging current for 5s.

Decrease the charging efficiency when PV array charging current more than 1.5 times of Rate charging current for 1s.

Recover after decrease charging efficiency for 1min.

3 、Over discharge protection

The controller will start the over discharge protection and close the load when the battery voltage is

less than over discharge voltage and duration 5s.

The controller will start the over discharge recovery protection when the battery voltage exceed the over discharge recovery voltage.The next night will remove automatically.

4 、Short circuit protection

Short circuit:

The first time short circuit in one day will recover after 5s later.

The second time will recover after 10s later.

The third time will recover after 15s later.

The forth time will recover after 20s later.

The fifth time or more than five times will recover after 4hours later.

Also can recover by long press the key!

5 、Over load protection

Over-load protection:

Close the load when load current more than Rate load current also less than 1.25 times of Rate load current for 60 seconds;

Close the load when load current more than 1.25 also less than 1.5 times of Rate load current for30 seconds;

Close the load when load current more than 1.5 also less than 3 times of Rate load current for 5 seconds;

Recovery normal after overload stop 60s later, not have the limited times.

6 、Reverse connection protection

This controller including the PV array, battery and load reverse connection protection.

Operating mode

04

05

06

07

00

01

02

03

LED Display

Mode

Purely light-operated

Light-operated + time-controlled for 1 hour

Light-operated + time-controlled for 2 hours

Light-operated + time-controlled for 3 hours

Light-operated + time-controlled for 4 hours

Light-operated + time-controlled for 5 hours

Light-operated + time-controlled for 6 hours

Light-operated + time-controlled for 7 hours

LED Display

12

13

14

15

08

09

10

11

Mode

Light-operated + time-controlled for 8 hours

Light-operated + time-controlled for 9 hours

Light-operated + time-controlled for 10 hours

Light-operated + time-controlled for 11 hours

Light-operated + time-controlled for 12 hours

Light-operated + time-controlled for 13 hour

Light-operated + time-controlled for 14 hours

Always on mode

Error instruction and description

Error code

Fault description

E1

Solutions and recovery condition

Too high of controller temperature

Please ensure the solar panel and load power not exceeded the rate power then place the controller to ventilation environment. Auto recover after temperature decrease. Controller will decrease the charging efficiency and close discharge.

LCM display

Bat and PV twinkle at the same time

E2

Battery over voltage

Please check right connection and voltage of the battery

Bat twinkle

Led display

- - -

Solar panel indicator twinkle fast

E3

Battery over discharge

Ensure the input voltage of the battery is normal.

Recover auto after full charge

Bat twinkle - - -

E4

E7

E8

E9

Excessive charging current

Please check the solar panel power whether exceed the controller’s rate power

Pv twinkle

Load short circuit

Overload

Battery overheat

Ensure the output line of the load not have short circuit.

After eliminate the faults then long press the key or hold on it will recover automatically.

Please check the load power whether exceed the controller’s rate power. After decrease the load then long press the key or hold on it will recover automatically.

Please check the battery temperature overheat or not. Place the controller to ventilation environment. Controller will close charging and auto recover after temperature decrease.

Load twinkle

Load twinkle

Bat twinkle

- - -

Load indicator twinkle fast

Load indicator twinkle slow

Solar panel indicator twinkle fast

Accessories

Temperature probe

Screwdriver.

Instruction manual

1pcs

1pcs

1pcs

Parameters instruction

Parameter

System voltage

Rate charging current

Rate load current

No load loss

Charging circuit voltage drop

Discharge circuit voltage drop

Solar input voltage

Re-entrant boost charge mode voltage

Over voltage protection limited voltage for charging

Equal charging voltage

Equal charging interval

Direct charge voltage

Float charge voltage

Over discharge voltage

Over discharge recover voltage

Equal charging time

Boost voltage charging time

Temperature compensation

Light-control voltage

Light control delay

Controller over-temperature protection

Battery over-temperature protection

Working temperature

Control method

Time of lcd back- light auto shut down

Data auto transfer time

Time of Led lattice closed

Weight

Value

12V/24V/36V/48V

45A/30A

45A/30A

<12mA

Less or equal to 0.5V

Less or equal to 0.5V

<140V

13.2V ×2/24V; ×3/36V; ×4/48V

17.0V ×2/24V; ×3/36V; ×4/48V

15.5V ×2/24V; ×3/36V; ×4/48V

Boost charge voltage +0.5V

30days

14.4V ×2/24V; ×3/36V; ×4/48V

13.6V ×2/24V; ×3/36V; ×4/48V

11.0V ×2/24V; ×3/36V; ×4/48V

12.5V ×2/24V; ×3/36V; ×4/48V

1H

2H

-3.0mv/ ℃/2V

5V ×2/24V; ×3/36V; ×4/48V

10min

>90 ℃

>55 ℃

-35 ℃ to +85℃

Charging: PWM

30 (s)

3 (s)

25 (s)

1.08Kg/45A 0.9Kg/30A