Mounting / Installation
Electrical connection
5
59
Building Technologies
007016_i_en_--
Fire Safety
2012-09-07
5.3.2.1
Use of unshielded cables
The connection is established from base to base using twisted or non-twisted wire
pairs.
LINE
+
-
1
2
C
4
B
3
A
+
LINE
+
+
_
_
+
_
LINE
+
+
_
_
+
_
LINE
+
+
_
_
+
_
Connection diagram for collective detector line with and without external alarm indicators
(without shielded cables)
1 Control panel
3 External alarm indicator
2 Detector
4 End-of-line depending on control
panel
Standard circuitry
With standard circuitry, the external alarm indicator is connected to the positive and
negative poles of each detector.
Wire-saving cabling
NOTICE
Cabling for new sites
Wire-saving cabling in external alarm indicators is prohibited for new sites.
With wire-saving cabling, the external alarm indicator is connected as follows:
The external alarm indicator must be connected to the positive and negative
poles of at least one detector (A).
The external alarm indicator must be connected to the positive pole of every
other detector (B).
The external alarm indicator need not be connected to the negative pole of
every other detector (C).
