Steca Solar charge controller 12 V, 24 V 30 A Steca PR 3030 104517 Manuale Utente

9

708.19 | 08.44

Using this SOC information, you always have an accurate overview on the 

actual battery level. Using the SOC, the regulator also controls the selection 

of the charging procedure and the deep discharging protection in order to 

ideally maintain the battery. If one of the parameters cannot be recorded 

because for example, a consumer or charging source is directly connected to 

the battery, the SOC calculation is invalid. The regulator can then be set to 

the more simplified voltage-guided control, see chapter 6.. 
The SOC calculation is restarted each time the regulator is reinstalled.

The regulator applies a constant voltage charging to the battery. The entire 

available electricity provided by the charging source is used for charging the 

battery until the final voltage is reached. A pulse width modulator (PWM) 

regulates the charging current by briefly closing the module input (shunt 

charge controller) in the charge control area.
Depending on the actual battery level, various charging procedures, float 

charging, boost charging and equalization charging are automatically 

performed. In doing so, the settings for the battery and control type are 

factored in. The final charging voltage is temperature compensated. Every 

30 days a test is automatically performed to determine if an equalization 

charging must be carried out.

The regulator protects the connected battery against an excessive 

discharging. If the battery falls below a specified charge level (during SOC 

control) or battery voltage (during the voltage-controlled function), the load 

output is disconnected and the discharge of the battery is prevented. The 

display shows the early warning and disconnection during deep discharging. 

The setpoints of the deep discharging protection are predefined and cannot 

be reset.  

The battery type, control type and night light function can be set in the 

regulator. Points for the auto-test and the serial number query are also loca-

ted within the menu. The settings remain when the battery is disconnected.  

Press the left button for at least 3 seconds to open the first setting window 

(control type). Press the left button again to call up the various windows.
Press the right button to modify settings. The display begins to flash. Now, 

with the left button select the settings options. The setting must be saved 

with the right button. The display then stops flashing.
The normal window reappears after a 30 second waiting period or pressing 

the left button for 3 seconds. This applies to all windows.

The SOC control is the factory setting. This way, the charging procedure and 

the deep discharging protection are controlled by the calculated SOC value 

for ideal battery usage. 

Only fixed voltage thresholds 

are used and the SOC bar dis-

play is faded out in all windows 

during voltage-guided control 

(UoL).