Steca Solar charge controller 12 V, 24 V 20 A Steca Solarix PRS 2020 101477 Fiche De Données

Operating the solar charge controller is dangerous in the following situations:

The solar charge controller does not appear to function at all.
The solar charge controller or connected cables are visibly damaged.
Emission of smoke or fluid penetration.
When parts are loose.

In these cases immediately remove the solar charge controller from the solar 

modules and battery.

The solar charge controller 

monitors the state of charge of the battery bank, 
controls the charging process, 
controls the connection/disconnection of loads. 

This optimises battery use and significantly extends its service life. 
A battery charging algorithm protects the battery from harmful states. Activation of 

the three deep discharge functions (LVW, LVD and LVR) is dependent upon the state of 

charge (SOC). The switching thresholds lie within the corresponding voltage window in 

accordance with the discharge or charging current.

LED

Status

Meaning

Info LED

illuminates 

green

normal operation

flashes red

a fault exists (see "Faults and remedies")

Red LED

flashing quickly battery empty, state of charge < 40 % 

when the battery continues to be discharged the 

deep-discharge deactivation is triggered

flashing

deep-discharge deactivation, state of charge < 

30 %

Yellow LED

illuminates

battery weak, state of charge < 50 %

flashing

switch-on threshold after deep-discharge deactiva-

tion has not yet been reached,  

state of charge is 40 % to 50 %

1. green LED

illuminates

battery good, state of charge > 50 %

. green LED

illuminates

battery full, state of charge > 80 %

flashing quickly battery full, charge regulation active,  

i.e. charging current reduced

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The solar charge controller consists of the 

following components:

info LED
4 LEDs for displaying the state of charge  

(red, yellow, green 1 and green )
terminal block for connecting the solar 

module
terminal block for connecting the battery
terminal block for connecting the loads  

loads

1.
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3.

4.
5.

3