Siemens FDOOT241-9 - Use of Shielded Cables

Mounting / Installation
77
Building Technologies 007004_k_en_--
Fire Safety & Security Products 16.04.2009
5.13.3.2 Use of shielded cables
The shielding of the MS8 line must be connected through in the base adapter
auxiliary terminals DBZ1190-xx.
If a shielded cable is used, there are two possible ways of connecting external
alarm indicators:
+
-
+
-
+
-
+
-
+
-
+
-
LINE
+
-
+
-
+
-
1
2
3
B
4
++
A
+
-
+
-
+
-
4
Connection diagram for MS8 detector line with and without external alarm indicators (with
shielded cables)
1 Control panel 3 External alarm indicator DJ119x
2 Base adapter FDB281 (with fitted
detector base FDB221)
Variant A:
1. Connect the positive pole of the external alarm indicator to the positive pole for
the alarm indicator on the detector.
2. Connect the negative pole of the external alarm indicator to the negative pole
for the alarm indicator on the detector.
3. Connect the shielding of the connection cable between the alarm indicator and
detector on the detector side to the positive pole for the external alarm indicator
via an auxiliary terminal DBZ1190-xx.
Variant B:
1. Connect the positive pole of the external alarm indicator to the positive pole for
the alarm indicator on the detector.
2. Leave the negative pole for the alarm indicator on the detector unoccupied.
3. Connect the negative pole of the external alarm indicator with the negative
terminal on the input side of the MS8 line on the detector via an auxiliary
terminal DBZ1190-xx.
4. Connect the shielding of the Ms8 line with the shielding of the connection cable
to the external alarm indicator via an auxiliary terminal DBZ1190-xx.