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 / pre- 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)
Features:
•
automatic recognition of the system voltage 12/24 V
•
temperature-controlled charging and gassing regulation
•
deep discharge protection with pre-warning
•
module and power load shutdown in the plus circuit
Function description:
The solar controller works on the principle of pulse-width modulated serial control, i.e. the regulation at the charge limits is achieved by
modulation of the charging current from the solar module.
Assembly
In order to guarantee appropriate operation, please read these operating instructions including safety information completely and carefully
before use.
•
During assembly ensure that the solar controller and any other system components are mounted in such a way that it is not
accessible for children. Danger of life!
•
Do not mount the solar controller directly above a heat source! Ensure that the battery is located in a well-ventilated room! Strictly
ensure correct polarity!
•
Always ensure proper ventilation of your solar controller. Never cover the ventilation slots of the solar controller. Never use the
device in the vicinity of highly flammable materials.
•
Remember that large amounts of energy are stored in batteries. In case of short-circuit, these energy quantities can be released
in a short time. This means that extreme heat may built up or a fire may break out at the site of short-circuit.
Attention: All components (solar module, battery, consumers and solar controller) must be adjusted to each other concerning
voltage and intensity of current. Check this information on the respective type plate. In case of doubt, please contact your dealer.
Strictly ensure correct polarity!
Note:
In case of reverse polarity on the load output, devices without own protection may be destroyed. This is why each consumer must be
protected individually.
To ensure safe operation, please strictly follow the correct order, when connecting the individual system components.
1.
Connecting the battery:
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.
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.
2.
Connecting the solar module
Connect the solar module to the corresponding screw terminals at the solar controller.
3.
Connecting the load
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
Please observe correct polarity when connecting the consumers!
Attention: Make sure that the load output of the solar controller is switched off!
LED display
The two LEDs 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 green LED 5 is lit up.
Deep-discharge protection
Lead batteries have to be protected against deep discharge in order to prevent damage to the cells. The solar controller protects the
batteries reliably against exhaustive discharge by shutting down the DC load when the deep discharge voltage value is reached. As soon as
the batteries have been sufficiently recharged by the solar cells the load is switched on again automatically.
The parameters of the low discharge protection, of the re-start and of the cut-off voltage are predefined and cannot be modified!
Deep-discharge pre-warning
If the battery voltage falls below the nominal voltage value (12V/24V) the red LED 4 "Status" also lights up together with the green LED 5
“Charge” as pre-warning.
Overcharge protection
When the cut-off voltage is reached the battery is still not fully charged. The charging current is then reduced, so that the cut-off voltage is
not exceeded. This method charges your battery gently and quick without overcharging.
