Connection Diagram (C-Net-Ex) - Siemens OOH740-A9-Ex Technical Manual

5 Mounting/Installation
Connecting the detector base
5.10.2
C-NET
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1 FDCL221-Ex
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Connection diagram for addressed detector line C-NET-Ex with and without external alarm indicators
1 Control panel
2 Detector base FDB221, FDB222
56
Building Technologies
Fire Safety

Connection diagram (C-NET-Ex)

WARNING
Connecting cables in environments at risk of explosion
Risk of explosion
● Only connect cables in an environment that is not at risk of explosion.
The following applies to C-NET-Ex detector lines:
Only stubs are permitted.
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The detector line must start with a line adapter (Ex) FDCL221-Ex.
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Observe the maximum number of detectors that may be operated on a stub.
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External alarm indicators may only be connected to one detector.
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Only connect passive, external alarm indicators with negligibly low inductance
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and capacitance levels. The external alarm indicators FDAI9x-Ex conform to
these requirements.
The connection is established from base to base using twisted or non-twisted wire
pairs.
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C-NET-Ex
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Assignment of terminals in detector base
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2
3 External alarm indicator FDAI9x-Ex
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A6V10367521_h_en_--
2015-02-02
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