Electrical Installation
6
6.6.2 Using DO self-consumption switch
1
2
3
4
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.
Figure 29: self-consumption switch
1
Earth (GND)
2
self-consumption switch
3
self-consumption switch
4
Terminal strip
Configuring software settings
The switching behaviour of the self-consumption switch can be configured using
the commissioning assistant (see 7.4 – p. 59).
►
Adjust the switch-on threshold and minimum switch-on duration to suit the
consumers that are activated using the self-consumption switch.
Figure 30: Activating/deactivating a
thermal resistor
1
Heating element
K1 External contactor
Application example
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.
KD-421 | Part no. 22136 | EN | X03
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+ 24 VDC
GND
K1
A1
A2
N
1