www.lumiax.com
Lumiax
Magic your solar life
So lar Char ge Cont roller
5A /10A /15A /20A
User Manual
1.Description of Function
LAT-NL series intelligent solar controller is especially for solar photovoltaic power generation system and solar street light system.
It comes with a number of outstanding features, such as:
Programmable nightlight function
12V/24V automatic recognition
Clear readable display of charge/discharge and error description
Four stages charge way: fast, boost, equal, float
Temperature compensation
Low voltage disconnected reulated by state of charge
Max. 16mm² binding clamp
Full automatic electronic protect function
This manual provides some important recommendations related to the controller, including installation, use, programming and fault exclusion.
2.Dimensions
3.Safety instructions and waiver of liability
3.1 Safety
①The solar charge controller may only be used in PV systems in accordance with this user manual and the specifications of other modules manufacturers. No energy source other than a solar generator may be connected to the solar charge controller.
②Batteries store a large amount of energy, never short circuit a battery under all circumstances. We strongly recommend connecting a fuse directly to the battery to protect any short circuit at the battery wiring.
③Batteries can produce flammable gases. Avoid making sparks, using fire or any naked flame. Make sure that the battery room is ventilated.
④Avoid touching or short circuiting wires or terminals.
Be aware that the voltages on special terminals or wires can be as much as twice the battery voltage. Use isolated tools, stand on dry ground, and keep your hands dry.
⑤Keep children away from batteries and the charge controller.
3.2 Liability Exclusion
The manufacturer shall not be liable for damages, especially on the battery, caused by use other than as intended or as mentioned in this manual or if the recommendations of the battery manufacturer are neglected. The manufacturer shall not be liable if there has been service or repair carried out by any unauthorized person, unusual use, wrong installation, or bad system design.
Page 1 of 4 pages
Solar Charge Controller LAT05/10/15/20-NL User Manual
4.Installation
The following diagrams provide an overview of the connections and the proper order.
6.Display Functions
The controller is equipped with 5 LEDS.
Green*1
Yellow*3
Red*1
In normal operation,the controller shows charge or discharge status、battery capacity and load status.
6.1Charge display(Green LED)：
③ ④ ① ② ⑤ ⑥
To avoid any voltage on the wires, first connect the wire to the controller, then to the battery, panel or load.
Make sure the wire length between battery and controller is as short as possible.
Recommended minimum wire size: Lat05-NL: 1.5 mm²;
Lat10-NL: 2.5mm²; Lat15/20-NL: 4.0mm².
Be aware that the positive terminal of controller are connected together and therefore have the same electrical potential. If any grounding is required, always do this on the positive wires.
Connecting capacitive load may trigger short circuit protection.
!
Remark: If the device is used in a vehicle which has the battery negative on the chassis, loads connected to the controller must not have an electric connection to the car body, otherwise the Low Voltage disconnect and electronic fuse functions of the controller are short circuited.
5.Starting up the controller
f s o t e c t e u d e s t o o a
1
24V system v ol tage. A s s t g th o t e c t p s y v oltage is h 2 t
30
1 6 n t
i n i s o
2 V y l
0 o e t u
description occur.
t r t r .
e on r l e t i L u
s i i
Solar array supplies electricity
(LED is on)
Solar array does not supply electricity
(LED is off)
6.2Status of charge display(Yellow LED):
<25% 25-75% >75%
The percentage corresponds to the available energy until low voltage disconnect in relation to a fully charged battery.
6.3Load status display(Red LED)：
In case of deep discharge or overload/short-circuit of load, the load output is switched off.
Normal operation
(LED is off )
Low voltage disconnect(LED is on)
Overload or short-circuit
of load(LED is flashing)
7.Low Voltage Disconnect Function
The controller uses state of charge to protect the battery form being deeply discharged:
11.2V/22.4V~11.8V/23.6V.
Disconnect at 11.2V/22.4V(at nominal load current) up to 11.8V/23.6V(at no load current).
!
Note:
1. If the controller goes into low voltage protection, it will restore only when the battery being recharged and the voltage reaching the reconnect voltage.
2. Around oblique line value separately on behalf of 12V and 24V system's value.
Page 2 of 4 pages
Solar Charge Controller LAT05/10/15/20-NL User Manual
8.Night light Function
The charge controller has a load terminal which is prepared for nightlight operation and switches on for a selectable number of hours from the dusk.
There are 2 modes available:
Dusk to Dawn and Evening Mode.
Light on
Light off
Light on
Light off
Dusk to Dawn
Evening Mode
Number of evening hours
9.1Programming Nightlight Function
You enter the programming mode with a long push on the button. The programming menu structure is described on the follow.
All programming settings are stored in a non-volatile memory and remain stored even if the controller was disconnected from the battery.
9.2Test Function
During daytime the testing function can help the user to verify correct installation or for trouble shooting a system problem. Short pushing the button will light up the lamp which is connected to the load terminals.
The lights will be on in the day for 1 minute intervals.
Within 1 minute the lights can be turned off via pushing button.
L1
L2
L3
State of Charge
Enter
Programming
L4
Programming Menu
Dusk to Dawn
L5 lighted,
L2/L3/L4 flash
L5
Normal
Operation
(Exit Programming)
Button
Short Push ＜1 Second
Long Push >1 Second
Evening mode，
8 hours
L5 lighted,
L2 flash
Evening mode，
6 hours
L5 lighted,
L3 flash
Evening mode，
4 hours
L5 lighted,
L4 flash
LED is Flashing
LED is On
LED is Off
10.1 Safety features
Solar terminal Battery terminal Load terminal
Reverse polarity
Protected *1 Protected *1
Short circuit Protected Protected *3
Protected *2
Switches off immediately
Switches off with delay Over current
Reverse
Current
Protected
Over voltage Max.55V *4
Under voltage
Over temp.
Max. 40V
Switches off switches off the load if the temperature reaches the set value.
*1 Controller can not protect itself in a 24V system when polarity of battery or solar is reversed.
*2 Controller can protect itself, but loads might be damaged.
*3 Battery must be protected by fuse, or battery will be permanently damaged.
*4 The solar panel voltage should not exceed this limit for a long time as voltage protection is done by a varistor.
!
Warning: The combination of different error conditions may cause damage to the controller.
Always remove the error before you continue connecting the controller.
10.2 Error description
Error
Loads are not supplied
Battery is empty after a short time
Display
Red LED is on
Red LED is flashing
Red LED is on
Reason
Battery is low
Over current/ short circuit of loads
Battery has low capacity
Remedy
Load will reconnect as soon as battery is recharged
Switch off all loads.
Remove short circuit.
Change battery
Battery is not being charged during the day over voltage protection
Does not recognize the system
voltage
Green LED is off
Solar array faulty or wrong polarity
Red and
Yellow LED
(the right side) are lighted
All LED
Lighted
Remove faulty
connection/ reverse polarity
Battery voltage too high
(>15.5V/31V)
Check if other sources overcharge the battery.
If not, controller
is damaged.
Battery wires or battery fuse damaged, battery has high resistance
Check battery wires,fuse and battery.
The battery voltage is not within the normal operating rang at start-up
Charge or discharge the battery to make the voltage within the normal range
Page 3 of 4 pages
Solar Charge Controller LAT05/10/15/20-NL User Manual
11.Technical Data
Model
System voltage
Max. solar current or load current
Fast voltage
Boost voltage
Equalization voltage
Float voltage
Load disconnect voltage
Load reconnect voltage
Working time during night
Battery type
Temperature Compensation
Max. solar voltage
Max. battery voltage
Over voltage protection
Dimensions/ Weight
Wire size
Own consumption
Ambient temperature
Degree of protection
LAT05-NL LAT10-NL LAT15-NL LAT20-NL
12V/24V automatic recognition
5A 10A 15A 20A
14.0V/28.0V(25℃)
14.5V/29.0V (25℃)
14.8V/29.6 V (25℃)(Liquid)
13.7V/27.4 V (25℃)
11.2~11.8V/22.4~23.6V
12.5V/25.0V
-4.17 mV/K per cell(Boost, Equalization); -3.33 mV/K per cell(Float)
55V
40V
15.5V/31.0V
81*102*37 / 150g
16mm²(AWG#6)
4mA
-40 ~ +60 ℃
IP22
Page 4 of 4 pages
User Manual_LAT-NL series_DK29
CE, Rohs, ISO9001:2008
Subject to change without notice!
