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7.2
Additional Power Supply
Battery
mal-
function
NTC
4k7
X11/9
8
7
6
5
4
3
2
Curre
B N
Sensor
malfunc
nt
NC
Distr.
NTC
tion
T6,3A
PE L1 L1 N N
1
Protect battery with external fuse: min. 12 A, max. 20 A
2
Power supply: 24 V/150 W, V24230-Z6-A1 set to slave
3
Power supply: 24 V/150 W, V24230-Z6-A1 set to master
Siemens Building Technologies
Fire & Security Products
The basic configuration with one ACC and two DRIs includes one power supply
with a capacity of 150 W. If this should not be sufficient for additional DRIs, an
additional 150 W power supply has to be installed. The system then can provide an
output power of 300 W in total.
Load
+UB
1
-
+
X8/10
9
8
7
6
5
4
3
1
+24 V
0 V
+B
F2
+B
3
Fig. 2
Additional power supply
In case of parallel power supply connections, an external protection fuse is
necessary for the battery connection that matches the conductor cross-section:
For example:
Protect line with 4 mm
Protect line with 6 mm
The lines to the connections + battery, - battery, +UB and - UB should be at least
2.5 mm².
External loads have to be protected with a fuse that matches the conductor cross-
section.
For example, a line with a cross-section of 2.5 mm² can be protected with
max. 20A.
- UB
2
1
X11/9
8
7
6
Curre
NC
nt
Distr.
PE L1 L1 N N
2
with a max. of 12 A.
2
with a max. of 20 A.
Mains
mal-
function
1 X8/10
9
8
7
5
4
3
2
B N
Sensor
Malfunc
NTC
+24 V
tin
+B
F2
T6,3A
+B
2
A24205-A335-B219.doc
Installation
6
5
4
3
2
1
0 V
13
08.2004
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