The integrated temperature sensor ensures optimum adaptation of the charging voltage to the battery ambient
temperature. For this purpose, the controller and the battery should be in the same room.
Connection and operation elements
1. +/- connection to solar module
2. +/- connection to lead battery
3. +/- connection to DC consumers
4. LED red – "Status“ battery empty / early warning
5. LED green –"Charge“
6. RS 232 connection (only model with LCD-
display)
7. “NEXT” key (only model with LCD-display)
8. "SET“ key (only model with LCD-display)
9. LCD-display (only model with LCD-display)
Attention:
Reversed polarity at the load and consumer output can destroy even fused units. The individual
consumers must be individually fused.
Assembly
The solar control should be installed as close as possible to the battery in accordance with the protective type.
The battery should only be installed in well-ventilated rooms. A chimney effect has to be ensured for the function
of the controller, i.e. the terminals must be installed facing downwards. The solar controller should not be
installed directly above heat sources. Clearance above and below the place of installation should be > 100 mm.
Installation
Attention: Ensure correct polarity!!!
In order to use the protective function of the solar controller, it must be
connected with the solar module, the lead battery and the consumers. All of the system components, i.e. the
solar module, lead battery, consumers and solar charge controller must be coordinated in terms of voltage and
current. Check this before installation. See the type plate for the solar controller specifications. If in doubt,
consult your dealer. Observe the correct sequence for installation:
1. Connect the battery to the screw terminals provided on the solar controller. In order to keep the voltage drop
and thus the associated cable heating as low as possible, the corresponding flexible cable section should
be used. The terminals are designed to accommodate cross sections of 16mm². The necessary minimum
cross sections are: up to 10A 1.5 mm², up to 20A 2.5 mm², up to 30A 4.0 mm². At the SCD-version,
calibrate the zero point of the current display by pressing the button “set” and at the same time the button
“next”.
2. The appropriate fuse must always be provided directly at the plus pole of the battery in accordance with
circuit protection regulations. Both components should be installed close to each other in the same room.
3. Connect the solar module to the corresponding screw terminals at the solar controller.
4. Then connect the consumers to the solar controller. See the symbols on the solar controller of the
illustration (Connection and operating elements) for the terminal allocation.
Changing the internal fuse
The solar controller has an internal plug-in fuse. In the event of faults, the cover must be removed to change the
fuse. To do this, the connected cables and the four screws at the sides must be removed. The fuse is
accessible when the cover is removed. Caution! In the model with LED display, the upper circuit board is
connected to the lower one via a cable harness. When replacing the cover make sure that the leads for the LED
displays sit correctly in the cover and are not crushed.
Charging the battery fully
The two LED’s provide information about the charging status of the battery, the current charge via the solar cell
and possible faults. If the battery voltage is within the permitted range, the upper green LED is lit up.
Early warning for battery empty
If the battery voltage falls below the nominal voltage value (12V/24V) the red LED "Status" also lights up as an
early warning.
Exhaustive discharge protection (red LED)
In the case of exhaustive discharge the consumers are shut down and the red LED lights up. It goes out when
the battery is recharged to the required switch-on voltage. Energy can now be taken again from the DC load
output.