This intelligent charge controller has been designed by Soléner to control the state of charge of the battery in photovoltaic installations. It has a state-of-the-art microprocessor and a high contrast LCD display of 16X2 characters, which, at any given moment, provides information about the state of the installation.
It is protected against PV module and battery polarity inversion. It has an external temperature sensor to measure the battery temperature and to compensate the temperature variations.
It admits continuous currents
of up to 30 A at the input and the output. The standard versions are 12
and 24 Volts.
The DSP electronic charge controller performs the following functions:
- Disconnects the charge to the battery when the battery voltage is above the maximum level of flotation for one second. It reconnects when the voltage decreases below the minimum flotation level at which time it starts charging again.
- Limits the battery discharge by disconnecting the load when the battery voltage drops below the voltage specified by the battery manufacturer for more than 10 seconds. It then reconnects when the voltage value is above the predefined level (depending on the battery model, but always higher than 2.0 volts per battery cell).
- It has an energy saving function during the night that also allows the omition of the blocking diode in most installations.
- The display provides information in a cycle about the following aspects of the operation of the installation:
The voltages and times depend on the battery model and manufacturer, the battery to be used with the charge controller should be specified.
The only adjustment is the
display contrast, located behind the display itself, which in extreme temperatures
may need readjustment in situ in order to be correctly seen.
There are two more versions
of this charge controller. The double model has two PV module inputs, so
that a total of 40A of modules can be connected (20+20, 25+15, 30+10, for
example). The model with two push buttons allows the information displayed
to be changed at will and for this information to be shown permanently.