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LS20A

Solar system controller

PDF File: LS20A controller
General Safety Instructions
   Danger of explosion due to improper handling of batteries! Corrosive hazard by leaking battery acid! Keep children away from batteries and acid! Smoking, fire and naked lights are prohibited when handling batteries. Prevent sparking and wear eye protection gear during installation.
   Solar modules generate power from light incidence. Even by low light incidence solar modules carry the full voltage. Therefore, work cautiously and avoid sparking during all work.
   Use only well-isolated tools!
   If the regulator is operated in a manner not specified by the manufacturer, the regulator’s constructive protective measures can deteriorate.The factory signs and marking may not be modified, removed or made unrecognizable. All work must be performed in conformity with the national electrical specifications and related local regulations!
   When installing the regulator in foreign countries, information concerning regulations and protective measures must be obtained from the relevant institutions / authorities.
   Do not begin the installation until you are sure that you have technically understood the manual and perform the work only in the order provided in this manual!
   The manual must be available during all work performed on the system, third parties included.
   This manual is a component of the system regulator and must be included with the regulator when given to a third person.
The Controller is equiped with a low power surge protection. The installer had to care for a efficient lightning protection.
Scope of Application
   The charge regulator is only suitable for regulating photovoltaic solar modules. Never connect another charging source to the charge regulator. This can destroy the regulator and / or source.
   The regulator is only suitable for the following chargeable 12V or 24V battery types:
-Lead storage batteries with liquid electrolytes
-Sealed lead storage batteries; AGM, GEL
   Important!The regulator is not suited for nickel Cadmium, nickel metal hydride, lithium ions or other rechargeable or non-rechargeable batteries.
   The regulator may only be used for the particular solar applications provided.Also,observe that the permitted, model-specific, nominal currents and voltages are not exceeded.
Installation
Install the regulator near the battery on a suitable surface. The battery cable should be as short as possible and have a suitable cable diameter size to minimize loss, e.g. 4 mm² at 20 A and  2m length.A temperature compensated final charge voltage will extend the batteries lifetime and uses the optimum
charge capacity.
   Do not install the controller to direct sunlight.
To ensure the air confection on each side keep a distance
of 10 cm to the regulator.

Connecting the Regulator
1.Connect the battery to the charge regulator - plus and minus
2.Connect the photovoltaic module to the charge regulator - plus
and minus
3. Connect the consumer to the charge regulator - plus and minus
The reverse order applies when deinstalling!
An improper sequence order can damage the controller!

Attn:In a stand-alone solar system,grounding is not necessary.This controller is a positive ground controller,therefore,if you need to do the grounding,please connect all positive wires to the ground!
System indicator
The interface of the controller
1.Temperature compensation
2.Charge indicator
3.Battery capacity indicator
4.Flooded battery indicator
5.Gel battery indicator
6.Sealed battery indicator
7.Load output indicator
8.Manual on/off switch
Technical parameter

Model

LS10A

LS20A

Rated charging current

10A

20A

Rated discharging current

10A

20A

Short-current protection

40A

40A

System voltage

12V/24V automatic adapt

Over current protection

<1.3 maintain for 60s

<1.6 maintain for 5s

 >1.6 shut down immediately

Stand-by lost

<7mA

Charge voltage drop

≤0.26V

Discharge voltage drop

≤0.15V

Max solar panel voltage

42V

Operating temperature

-35℃ to +55℃

voltage

Gel

Sealed

Flooded

Equalize charging voltage

14.8V

14.6V

14.8V

Bulk charging voltage

14.5V

14.5V

14.5V

Acceptance charging voltage

14.2V

14.4V

14.6V

Float charging

13.8V

13.8V

13.8V

Charge return voltage

13.2V

13.2V

13.2V

Discharge stop voltage

11.2V

11.2V

11.2V

Discharge return voltage

12.6V

12.6V

12.6V

Temperature compensation

-4mV/2V/

Control mode

PWM( Pulse Width Modulation )

Maximum wire size

11AWG

7AWG

Size/weight

140×65×34mm/150g

143x79x45/300g

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