6
Electrical Installation
6.6.3 Using DO min/max SOC
Figure 31: min/max SOC digital output
1 Earth (GND)
2 DO min/max SOC
3 Signal line
4 Terminal strip
Function
The storage system software can be
used to set a minimum state of charge
(min SoC) and a maximum state of
charge (max SoC).
If the state of charge of the storage
system drops below the min SoC
value, the digital output is activated.
The digital output is only then
deactivated when the state of charge
exceeds the max SoC value.
Configuring software settings
The switching behaviour of the min/max SoC digital output can be configured using
the commissioning assistant (see 7.4 – p. 59).
►
Set suitable values for the min SoC and max SoC variables.
Figure 32: Activating/deactivating a CHP
unit
1
CHP
2
Contact for activating CHP
K2 External relay
Application example
As an example, a CHP unit (1) can be
activated/deactivated using the
min/max SoC digital output.
The CHP unit must be available via a
suitable interface (2) for
activation/deactivation.
In this example, the generation surplus
produced by the CHP unit can be used
to charge the storage system. The
power output of the CHP unit must be
recorded for this.
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KD-421 | Part no. 22136 | EN | X03
1
2
3
4
N
K2
A1
A2
N
L
1
M
1
2