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40 / 60 Installation instructions sonnenBatterie eco 9.43
6.7.4 Using digital output min/max SOC
1
2
3
4
Illustration 44: Digital output min/max SOC
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 sys-
tem drops below the min SOC value, the
digital output is activated. The digital out-
put is only then deactivated when the
state of charge exceeds the max SOC
value.
Configuring software settings
The switching behavior of the min/max SoC digital output can be configured us-
ing the commissioning assistant (see Commissioning assistant).
„
Set suitable values for the min SoC and max SoC variables.
N
K2
A1
A2
N
L
1
M
1
2
Illustration 45: Activating/deactivating a CHP
1 CHP
2 Contact for activating CHP
K2 External relay
Application example
As an example, a CHP unit (1) can be ac-
tivated/deactivated using the min/max
SoC digital output.
The CHP unit must be available via a suit-
able interface (2) for activation/deactiva-
tion. In this example, the generation sur-
plus produced by the CHP unit can be
used to charge the storage system. The
power output of the CHP unit must be re-
corded for this.
6.7.5 Using digital input CHP
The CHP digital input may only be used in the way described here in combin-
ation with a combined heat and power station (CHP) which provides a con-
stant supply of electrical power. Modulating combined heat and power sta-
tions, which supply a variable amount of power,
must not be connected like
this.