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6.7.3 Using digital output self-consumption switch
1
2
3
4
Illustration 42: Self-consumption switch
1 Earth (GND)
2 Self-consumption switch
3 Signal line
4 Terminal strip
Function
The storage system software can be used
to set a switch-on threshold and a min-
imum switch-on duration.
If the generation surplus (= generation –
consumption – charging of the storage
system) exceeds the set switch-on
threshold, the self-consumption switch is
activated. The self-consumption switch
then remains active for the set minimum
switch-on duration.
Configuring software settings
The switching behavior of the self-consumption switch can be configured using
the commissioning assistant (see Commissioning assistant [P. 52]).
„
Adjust the switch-on threshold and minimum switch-on duration to suit the
consumers that are activated using the self-consumption switch.
+ 24 VDC GND
K1
A1
A2
N
1
Illustration 43: Activating/deactivating a
thermal resistor
1 Heating element
K1 External contactor
Application example: heating element
As an example, a heating element (1) can
be activated/deactivated using the self-
consumption switch. In this case it is a
good idea to set the nominal power of the
heating element as the switch-on
threshold. Note that suitable safety meas-
ures must be in place to prevent the heat-
ing medium from overheating.