Electrical Installation
6
6.6.4 Using DI CHP
The CHP digital input may only be used in the way described here in combination
with a combined heat and power station (CHP) which provides a constant supply
of electrical power. Modulating combined heat and power stations, which supply a
variable amount of power,
must not
be connected like this.
Function
Using the storage system’s software the power produced by the combined heat and
power station, or some other constant source of power, can be set.
If the digital CHP input is activated, then the set power will be added to the power
currently being produced.
Application example – Combined heat and power station with operating
contacts
A combined heat and power station (3)
with operating contacts (4) can be
wired up as shown in the left figure.
If the operating contacts (4) close, the
digital CHP (2) input will be activated.
1
Signal line
2
Digital input CHP
3
CHP
4 Floating operating contacts for the
combined heat and power station
(open if the station is not operating,
closed if it is)
Figure 33: CHP with operating contacts
KD-421 | Part no. 22136 | EN | X03
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24 VDC
1
N
L
1
M
GYPK
RDBU
2
L
N
3
4
6
5
GND
24 VDC