Date
9/7/2018
File
BSR-2114/MAR
Document Number
921211401_09_002
Page
25 από 74
25
device and on the other pair +L and -L connect the cables to the next device. In sensors bases, connect the positive loop cable
to the contacts marked as «IN» and the negative loop cable to the contacts marked as «IN-OUT».
The loop must be a closed or circular circuit without any branches.
Each loop circuit detects open and short-circuits conditions.
The figure below shows how a sensor base is connected to the loop as well as the connection of the external indication LED to
the base. The external indication LED lights when the detector issues an alarm.
IN
IN
OU
T
O
U
T
R
Connection
with (-L)
of the loop
Connection
with external
LED
Connection
with (+L)
of the loop
Ceiling mounting positions
R
+
-L
-L
+
L
+
L
Figure 3-10
Connecting a sensor base to a loop
Warning!!! To overdrive the delays (at access level 1) a call point must be used and this
manual call point must be close to the panel (Ref Clause 7.11.1.d of EN54-2).
3.4.4
Connecting the sirens
Figure 3-11
Connecting sirens to the panel
The loop board have 2 siren outputs, one per loop, that are marked as «ALARM-1» and «ALARM-2». Each output can provide up
to 500mA and is monitored for open and short circuit conditions. By default there are terminals resistor (5,6ΚΩ) mounted on
the terminals of these outputs. If an output is not used then the resistor must be left connected. If an output is used then the
resistor is removed and installed in parallel with the last siren as shown in figure 3-10. By default, both siren outputs are
programmed to operate in case of an alarm.
