6
Electrical connection
6.5.3 Using the ‘self-consumption switch’ digital output
Figure 32: self-consumption switch
1
Earth (GND)
2
Self-consumption switch
3
Signal line for digital outputs
4
Terminal strip
Function
The storage system software can be
used to set a switch-on threshold and a
minimum 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 behaviour of the self-consumption switch can be configured using
the commissioning wizard (see section 7.3 – pg. 56).
►
Adjust the switch-on threshold and minimum switch-on duration to suit the
consumers that are activated using the self-consumption switch.
Application example
Figure 33: Activating/deactivating a thermal
resistor
1
Heating element
K1ex
External contactor (not included in
scope of delivery)
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 measures
must be in place to prevent the heating
medium from overheating.
page 38 of 63
KD-291 | Part no. 52187 | EN | X01
3
4
1
2
+ 24 VDC
GND
K1
A1
A2
N
1
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