Installation and operating instructions Solar charge controller 25 A / 40 A EN 755.389 | Z02 | 16.
Contents 1 1.1 1.2 2 3 4 5 5.1 5.2 5.3 6 6.1 6.2 6.2.1 6.2.2 6.2.3 6.2.4 6.2.5 6.2.6 6.2.7 6.2.8 6.2.9 7 7.1 7.2 7.3 7.4 7.5 8 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.
1 Safety instructions 1.1 Safety instructions are identified as follows In this manual, safety instructions for personal safety are identified with this symbol. Instructions relating to the functional safety of the system and the controller are in bold type. 1.
3 Area of application These instructions describe the functions and installation of a charge controller for photovoltaic (PV) systems to be used for charging 12 V or 24 V lead-acid batteries in the hobby and leisure, residential, business, commercial and small company areas. The charge controller is only suitable for controlling solar modules. Never connect any other type of charging source to the charge controller. This can destroy the controller and / or the charging source.
• Overtemperature protection If the temperature inside the controller becomes too high, then the controller load output is switched off to reduce the power loss. • Load output overload protection If the permissible load current is exceeded, then the load output is switched off. • USB charging socket overload protection If the USB current is exceeded for longer periods, the USB output is switched off. • Overvoltage protection A varistor at the module input provides protection against overvoltages > 47 V.
5.2 Connecting the controller Solar modules generate electricity under incident light. The full voltage is present, even when the incident light levels are low. You should therefore work carefully and avoid creating sparks. Observe the appropriate safety precautions. Double the normal system voltages can be present during installation and electrical connection of the DC side of the photovoltaic system (up to 24 V in a 12 V system and up to 48 V in a 24 V system).
6 Operation The display shows numerous types of system data using symbols and numbers. All settings and display windows are controlled via the two buttons. 6.1 Display and control elements Display window for system information and error messages 1 2 Button for switching between the display windows or for accessing settings 3 Manual load switch or confirmation button when performing settings 6.
6.2.1 SOC window Displays the charge state, day / night status and load on / off status. In the Voltage control operating mode, the battery voltage is displayed instead of the SOC value. In the Voltage control with bar display operating mode, the battery voltage is displayed both alphanumerically and as a bar display. 6.2.2 Voltage window Displays the battery voltage measured by the controller. 6.2.3 Module current Displays the solar module output current. 6.2.
6.2.8 Deep discharge protection advance warning The following symbols flash in the various operating modes to provide advance warning of deep discharge. • SOC bar (SOC with bar display) • Voltage value (Voltage control) • Voltage value and voltage bar display (Voltage control with bar display) The face symbol still looks happy. 6.2.
7 Functions This section describes the basic functions of the charge controller. Operation of the controller is described under the respective menu items in Section Configuring the controller. 7.1 SOC calculation The controller monitors various battery parameters (V, I) during normal operation and uses this information to calculate the state of charge of the battery (SOC = state of charge). The state of charge represents the amount of energy currently available in the battery.
7.5 Daylight function This function allows a switch-on point for the load output to be defined that occurs during the night / darkness when daylight is detected. The aim is to switch on a load a specified number of hours before dawn. The load output remains switched off outside this period. The controller recognises Day (= sun symbol) when the module voltage is greater than the battery voltage and the battery can be charged. Recognition duration: approx. 30 s.
8 Configuring the controller The following section describes the configuration settings that can be performed on the controller. 8.1 Accessing and changing settings Pressing and holding the left button for at least 3 seconds brings you to the first settings window (Operating mode). Further pressing of the left button displays other windows. After the last window, the first window is displayed once more. Press the right button when you want to change settings in the currently displayed window.
8.5 Daylight settings The daylight function has the following settings: • OFF: The function is deactivated (default). • 1 h ... 12 h: Switch-on point before detection of daytime (upper right Fig.). 8.6 Restoring default values (presetting) Calling the presetting function (PRE) deletes any previous settings and restores the settings in the charge controller to the factory defaults. The factory defaults are: SOC control / Li battery / Night light OFF / Daylight OFF 8.
Code Description 000 After displaying the code 000, all LCD segments are displayed and then hidden. The controller is OK. 100 Defective solar module input. Possible causes: • Solar module was not disconnected before the test. Check this and repeat the test if necessary. • Defective controller. Contact your dealer for a more detailed examination or replacement. 010 Defective load output. Possible causes: • Load was not disconnected before the test. Check this and repeat the test if necessary.
9 Error messages Please note: Never open the device to find faults and do not attempt to replace components yourself. Incorrectly performed repairs can result in danger for the user and the system. This will also invalidate all warranty claims. When the device detects faults or impermissible operating states, this is indicated by a flashing error code on the display. Errors are basically either temporary faults, e.g.
Display Meaning Cause / Remedy Excessive module current. The permissible input current of the controller was exceeded. Reduce the charging current or module power. Short circuit at load output. Rectify short circuit. Disconnect and reconnect the load. Moon symbol during • Correct the short circuit at daylight hours: module input. Sun symbol • Short circuit at appears after 10 s. module input • Connect the module. • No module conSun symbol appears after nected 15 min.
10 Technical data The manufacturer reserves the right to make technical changes. Electrical data Operational voltage 12 V or 24 V, automatically detected 12 V voltage range 6.9 V – 17.2 V 24 V voltage range 17.3 V – 43 V USB charging socket voltage 5.2 V Permissible ambient temperature range –10 °C to +50 °C Permissible storage temperature range –20 °C to +80 °C Own consumption in mA 12.5 mA PWM frequency 30 Hz Maximum input voltage < 47 V Minimum battery voltage 6.
Load disconnection SOC control Voltage control Load disconnection advance SOC < 40 % warning < 11.7 V / 23.4 V Load disconnection SOC < 30 % <11.1 V / 22.2 V Load reconnection SOC > 50 % >12.5 V / 25.0 V Bar display scaling (only in Voltage control with bar display mode) > 13.0 V / 26.0 V 10 bar segments > 12.9 V / 25.8 V 9 bar segments > 12.8 V / 25.6 V 8 bar segments > 12.7 V / 25.4 V 7 bar segments > 12.5 V / 25.0 V 6 bar segments > 12.0 V / 24.0 V 5 bar segments > 11.7 V / 23.
