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Date
30/9/2016
File
Document code
921163800_09_007
Page
31 from 47
Figure
4
-
26
. Connecting 3 gas detectors BS-685 or BS-686. Apart from connecting the detectors to the zones, the
detectors must also be powered from the terminals 24V_M.
4.8
Connecting the Sirens
8,2k
Ω
8
,2
k
Ω
A
L
2
A
L
1
Sirens
Sirens
Figure 4-27. Connecting the sirens to the panel
The panel contains 2 outputs that are used for connecting the sirens. These outputs are marked as
«AL1» and «AL2».
Each output can provide up to 300mA and is monitored for open and short circuit
conditions. By default these terminals have an 8,2K
Ω
terminal resistor installed. If an output is not used
the then resistor must be left installed on the terminal. If the output is used then the terminal resistor is
removed and installed in parallel with the last siren.
By default both of these outputs are programmed to operate in case of an alarm condition.
On these outputs we can connected all the conventional sirens, bells or fire detection beacons (BS-530,
BS-531, BS-530/WP, BS-525).
The connections of both circuits are identical.
