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5
Mounting/Installation
Connecting the detector base
56
Building Technologies
A6V10367521_h_en_--
Fire Safety
2015-02-02
5.10.2 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:
l
Only stubs are permitted.
l
The detector line must start with a line adapter (Ex) FDCL221-Ex.
l
Observe the maximum number of detectors that may be operated on a stub.
l
External alarm indicators may only be connected to one detector.
l
Only connect passive, external alarm indicators with negligibly low inductance
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.
+
-
+
-
+
-
+
-
+
-
+
-
C-NET-Ex
+
-
+
-
+
-
2
3
FDCL221-Ex
C-NET
+
-
1
+
-
+
Connection diagram for addressed detector line C-NET-Ex with and without external alarm indicators
1 Control panel
3 External alarm indicator FDAI9x-Ex
2 Detector base FDB221, FDB222
Assignment of terminals in detector base