Solar Charge Controllers tion and operation.

Do
not install PV-compo-
6.6c / 5.0c / 10.10c / 8.8c / 8.0c nents in rooms where
easy flammable gases
mixtures can develop
• Discharge Protection ®
(e. g. by gas bottles,

88
• Overcharge Protection laquers, solvents). Con-
sult your dealer when
• Temperature Compensation in doubt.
• System Voltage 12/24 V T2
Adjustment of
• Gassing Regulation
nominal voltage
Automatic adjustment
Please read these instructions completely before installation! Fig. 1: Circuit Diagram to the system voltage
when the regulator is
Modul Accu Consumer
installed. When you pay

39
shows the voltage by its colour. Before the load is switched off, this LED starts
to flash fast. When the load is switched off, this LED flashes slowly. attention to this instru- Fig. 2: Connection
Instructions and description of controllers with overcharge and cions your solar system
overdischarge protection, gasing regulation and temperature Do not forget that the connected users do not use more current will give you many years of pleasure. The battery reaches a life of ten years
compensation. 130
than admissable for your regulator. or longer. As the solar module and the charge controller have a considerably
In photovoltaic solar systems lead batteries are often used for storing solar higher life age, only the battery has to be exchanged. A defect battery can
Advice for Installation: be recognised that although the above-mentioned charging takes place, the
current. These batteries have to be protected against overcharging and over- The controller has to be installed possibly near the battery and must not be
discharging. The Solsum controllers Solsum 5.0 / 5.6 / 6.6 / 8.0 / 8.8 / 10.10 overdischarge protection switches off the users already after a short time.
exposed to direct weather conditions. The controller is to be operated in well-
fulfill both tasks in one device. They can be used for 12 and 24 V systems. ventilated rooms. The connection terminals have to point downwards when it Controller Type 6.6c 8.8c 10.10c 5.0c 8.0c
Overcharge Protection is installed. In order to activate the protective functions the controller has to
be connected with solar generator, battery and users. Nominal Voltage 12 V / (24 V)
When the battery exceeds the final charge voltage, it starts to gas. As this All system components i.e. solar generator, battery users and controller have Max. module current . 6A 8A 10 A 5A 8A
process is temperature dependent, the final charge voltage is adapted auto- to be coordinated concerning voltage. This is to be checked before intallati- Max. load current. 6A 8A 10 A - (*) - (*)
matically to the ambient temperature by a built-in sensor. Strong gasing leads on! Pay attention to the correct nominal voltage! Ask your dealer when you
to an electrolyte loss and finally to the destruction of the battery. The battery Max. own consumption. 4 mA
are in doubt!
is however not charged completely when the final charge voltage is reached, Final charge voltage normale 13,7 V
so that the current flow should not be interrupted. The charge controller Following order has to be obeyed when installing your controller: Temperature compensation 4 mV / K / cell
therefore reduces the current flow into the battery just as much as that the 1. Connect the battery with the controller at the screw terminal. The biggest Overdischarge disconnection constant 11,1 V 11,1 V 11,1 V - (*) - (*)
final charge voltage is not exceeded. This procedure is called „IU-charging“ possible cable diameter is recommended in order to keep a voltage drop and
which is considered to be especially fast and gentle. The reduction of the Reconnection 12,6 V 12,6 V 12,6 V - (*) - (*)
a connection terminal heating as low as possible (see technical data). Only
current flow is effected by very quick, temporary short-circuiting (pulse width when the controller is installed with short circuit proof cables, an isolation of
„Gasing active“ voltage 12,4 V
modulation) of the solar generator. the battery cable can be omitted. Otherwise a fuse has to be inserted directly Final gassing voltage 14,4 V

Gasing Regulation at the plus pole of the battery in order to avoid a short circuit. Both compo- Temperature Compensation - 3 mV / K / cell
nents have to be installed in the same room in near distance, as the sensor for Fuse 6,3 A 10 A 10 A 6,3 A 10 A
The final charge voltage is changed in dependence with the discharge level. temperature determination is integrated into the controller.
When a lead battery is operated without gas development for a longer time, Admissable ambient temperature - 25 °C …. + 50 °C
2. Connect the modules with the controller and note the correct polarity.
there is the danger of a harmful acid layering. This acid layering can be avo- 3. At last connect users Dimensions 130 x 88 x 39 mm
ided by limited, controlled gasing. This function is fulfilled by the gasing regu- For installation see figure 2. Connection terminal 2,5 mm²
lation. The gasing regulation switches off the overcharge protection until the
Weight 100 g
so-called final gasing voltage is reached. Furthermore the gasing regulation Pay attention to the correct polarity!
increases the final charge voltage during high cyclisation. By this temperature Sources of errors: (For 24V systems voltages are to be doubled!)
dependent function, the battery capacity is better used. Inversion of battery polarity. The fuse blows, it has to be replaced by the
* No load disconnect. Only fused with 6,3 and 10A.

Overdischarge protection same type.

Inversion of module polarity:
The batteries have to be protected from overdischarge, as it would be This is to be avoided.
destroyed otherwise. Therefore the charge controller protectes the battery Inversion of the polarity of the load:
from overdischarge by disconnecting the loads when the voltage falls below The users (lights, radio etc.) can be damaged before the fuse blows. A huge
the final charge voltage. After the battery has been recharged by the solar energy quantity is stored in the battery. In the case of a short circuit, this
generator and the reconnection voltage is reached, the useres are again energy can be set free within a short time and a fire at the place of the short
reconnected. circuit can be caused because of heat.

Attention:
Displays
1. Avoid short circuits: danger of fire!
The controller contains a green and a LED which can change its colour from 2. Users which may not switched off must be installed near the battery and
red via yellow to green in ten different colour . The green LED is on as soon protected by a fuse (e. g. position lights)
as there is energy from the module. When the controller starts to limit the 3. Sparkings can develop especially in direct current systems during installa-
charge current, this LED is flashing. The LED which can change its colour