14)
Tone Selection and 2nd and 3rd Stage Alarms
The BExCS110-05D sounder section has 32 different tones
that can be selected for the first stage alarm. The sounders
can then be switched to sound second and third stage alarm
tones. The tones are selected by operation of a DIP switch on
the sounder pcb for both DC and AC units. The tone table on
page five shows the switch positions for the 32 tones and
which tones are available for the second and third stages. To
operate the sounder on stage one simply connect the supply
voltage to the normal supply terminals (+ve and –ve for DC
units, L and N for AC units).
The operation of the second and third stages is different for
DC and AC units.
DC Units Second and Third Stage Tone Selection
The BExCS110-05D DC sounder section has the facility to
use either +ve or –ve switching to change the tone to the
second and third stages. For –ve switching connect the two
headers on the pcb to the left-hand (marked –ve) and centre
pins. For +ve switching connect the headers to the right hand
(ve) and the centre pins. To change to the second
stage tone, connect either a -ve or +ve supply line to terminal
S2, depending on which switching mode is being used while
maintaining the dc supply to the +ve and –ve terminals.
Similarly for the third stage tone, connect a -ve or +ve supply
line to terminal S3. The supply to the S3 terminal will
automatically override a supply to the S2 terminal.
AC Units Second and Third Stage Tone Selection
To select the second and third stage tones on the
BExCS110-05D AC sounder section, the Common (C)
terminal on the three way terminal block on the pcb is
connected to the S2 terminal for the second stage tone and
the S3 terminal for the third stage tone.
15)
Volume Control
The BExCS110-05D sounder section, with the exception of
12V DC units, has a volume control to adjust the output level.
To set the required output level, adjust the potentiometer on
the pcb. For maximum output level the potentiometer should
be set to the fully clockwise position.
Figure 7
Figure 6
BExCS110-05D DC Sounder Section
BExCS110-05D AC Sounder Section
Volume Control
DIP Switch
DIP Switch
Volume Control
DC Input
Terminals
Stage Headers
Stage Terminals
AC Input
Terminals
S2
S3
-
+
S2
S3
C
N
L
L
L
N
N
Figure 4
AC Input
Terminals
Interconnecting Terminals to
sounder pcb (simultaneous
mode of operation)
BExCS110-05D AC Beacon Section
Flip / Flop
Pin Header
DC Input
Terminals
Figure 5
-
-
+
+
Flip / Flop
Pin Header
BExCS110-05D DC Beacon Section
Interconnecting Terminals to
sounder pcb (simultaneous
mode of operation)
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