Detector Lines; Connection Diagram For Fdnet Detector Line; Use Of Unshielded Cables - Siemens FDOOT221 Technical Manual

4BMounting / Installation
5
49BDetector lines

5.19 Detector lines

5.19.1 Connection diagram for FDnet detector line

5.19.1.1 Use of unshielded cables

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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.
See also
 Detector lines [➙ 120]
The following applies to FDnet detector lines:
● Loops, stubs and T-branches are possible.
● You may only connect external alarm indicators to one detector.
● Permissible cables for detectors with more than one external alarm indicator in
the collective, AnalogPLUS, and SIGMALOOP connection diagrams may be
migrated to the FDnet without any changes.
● Note document 001508 for installation (calculation of the capacity layer).
See also
 Applicable documents [➙ 9]
The connection is established from base to base using twisted or non-twisted wire
pairs.
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+
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+ + +
1
+
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3
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+
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
LINE
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+ + +
4
3 Auxiliary terminals DBZ1190-xx
4 External alarm indicator
- - -
+ + +
4
- - -
+ + 2
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2015-11-04