1. SYSTEM OVERVIEW
Bus
Hot water store
Sensors
S1
Temperature store
S2
optional
S3
optional
DIn1
Smart Remote
DIn2
Smart Remote
The control unit consists of the controller with power unit and the sensor module.
The sensor module measures the current flow directly at the energy meter. If the power generated
is high enough, the excess current can be used for electrically heating the water in the store. If the
store maximum temperature is reached (S1), loading will stop. Alternatively, power control can take
place via an external 0-10 V signal.
Using a battery is possible in this system, but correct functioning cannot be guaranteed in all cases.
The PV current is used with the following priorities:
1. Direct consumption
2. Charging the battery
3. Loading a hot water store
4. Grid feed-in
For this purpose, the sensor modules and the battery have to be arranged as shown in the illustra-
tion. The current sensor of the battery must not detect the current consumption of the controller
and the loads controlled by the controller.
The SR off function (see page 60) allows remote access to the controller, e.g. in order to switch
it off when the battery is in use. If the switching input is closed, the controller and all loads switch
off regardless of the excess measured.
Different optional functions can be activated, see page 62.
• Internal backup heating
• Inverter
Energy meter
Controller with power unit
Sensor module
Battery
S1
Load
PV generator
Inverter
1 / GND
Out1
Electric immersion
heater
2 / GND
DO1
Inverter (optional)
3 / GND
9 / 10
11 / 12
41
Output
Out 1 / N / ⏚
21 / 22