Installation
7.2
Additional Power Supply
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.
X11/9 8 7 6 5 4 3 2 1
X8/10 9 8 7 6 5 4 3 2 1
}
NC
Curre
nt
Distr.
Sensor
NTC
malfunc
tion
B
N
PE
L1
L1
N
N
+B
F2
T6,3A
+B
X11/9 8 7 6 5 4 3 2 1
X8/10 9 8 7 6 5 4 3 2 1
}
Curre
nt
Distr.
Sensor
NTC
Malfunc
tin
B
N
PE
L1
L1
N
N
+B
F2
T6,3A
+B
Battery
mal-
function
-
+
Load
+UB
- UB
1
2
3
Power supply: 24 V/150 W, V24230-Z6-A1 set to slave
Protect battery with external fuse: min. 12 A, max. 20 A
Power supply: 24 V/150 W, V24230-Z6-A1 set to master
2
1
3
+24 V
0 V
+24 V
0 V
NTC
4k7
Mains
mal-
function
NC
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
2
with a max. of 12 A.
Protect line with 6 mm
2
with a max. of 20 A.
The lines to the conne 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.
13
Siemens Building Technologies
A24205-A335-B219.doc
Fire & Security Products
08.2004
