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5.3.2.2 Use of shielded cables
Building Technologies
Fire Safety
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).
The detector line shielding must be connected through in the detector base with
auxiliary terminals DBZ1190-xx.
There are two ways of connecting external alarm indicators:
LINE
2
_
_
_
+
+
+
LINE
1
3
Figure 21: Connection diagram for collective detector line with and without external alarm indicators
(with shielded cables)
1 Control panel
2 Detector
3 Auxiliary terminals DBZ1190-xx
Mounting / Installation
LINE
LINE
_
_
_
_
+
+
+
+
4
4
A
4 External alarm indicator
5 End-of-line depending on control
panel
5
Electrical connection
LINE
_
_
_
_
+
+
+
+
+
5
B
47 | 66
007011_m_en_--
2018-06-28
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