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5.14 Detector lines
5.14.1 Connection diagram
5.14.1.1 Use of unshielded cables
Building Technologies
Fire Safety
General cabling information
Preferably, twisted and non-shielded cables should be used. This also applies
to connecting the external alarm indicators.
Shielded cables are only required in special cases, such as strong high-
frequency fields.
The following applies to FDnet detector lines:
Loops, stubs and T-branches are possible.
You may only connect external alarm indicators to one detector.
The connection is established from base to base using twisted or non-twisted wire
pairs.
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1
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3
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Figure 25: Connection diagram for addressed detector line with and without external alarm indicators
(without shielded cables)
1 Control panel
2 Detector bases FDB221/FDB221-AA,
FDB222
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2
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LINE
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4
3 Auxiliary terminals DBZ1190-xx
4 External alarm indicator
Mounting / Installation
Detector lines
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4
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2
A6V10209291_h_en_--
2016-03-03
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