__________________________________________________________________________________________________________________________________
European Safety Systems Ltd.
Impress House, Mansell Road, Acton, London W3 7QH [email protected] Tel: +44 (0)208 743 8880
www.e-2-s.com Fax: +44 (0)208 740 4200
Document No. IS 2451-P Issue E 19-02-10 Sheet 4 of 4 (4)
care should be taken to dress the wire so that when the cover
is inserted into the chamber the wires do not exert excess
pressure on the terminal blocks. This is particularly important
when using cables with large cross sectional areas such as
2.5mm² and above.
13)
Tone Selection and 2nd and 3rd Stage Alarms
The BExDS120D and BExDS110D sounders have 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 pcb for both DC and AC units. The tone
table on page four 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 BExDS120D and BExDS110D DC sounders have the
facility to use 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
(marked +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 BExDS120D
and BExDS110D AC sounders 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.
14)
Volume Control
All BExDS120D and BExDS110D sounders, with the exception
of 12V DC units, have 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.
15)
End of Line Monitoring (DC Units)
On BExDS120D and BExDS110D DC units, dc reverse line
monitoring can be used if required. All DC sounders have a
blocking diode fitted in their supply input lines. An end of line
monitoring diode or an end of line monitoring resistor can be
connected across the +ve and –ve terminals. If an end of line
resistor is used it must have a minimum resistance value of
3k3 ohms and a minimum wattage of 0.5 watts or a minimum
resistance value of 500 ohms and a min. wattage of 2 watts.
TONE SELECTION TABLE
Note Switch No. 6 is not used
Tone Selection
DIP Switch
Settings
Stage Selection
Stage 1
Frequency Description
1 2 3 4 5
Stage 2
Stage 3
1
Continuous 1000Hz
Toxic gas alarm
0 0 0 0 0
Tone 31
Tone 11
2
Alternating 800/1000Hz at 0.25s
intervals
1 0 0 0 0
Tone 17
Tone 5
3
Slow Whoop 500/1200Hz at 0.3Hz
with 0.5s gap repeated
0 1 0 0 0
Tone 2
Tone 5
4
Sweeping 800/1000 at 1Hz
1 1 0 0 0
Tone 6
Tone 5
5
Continuous at 2400Hz
0 0 1 0 0
Tone 3
Tone 27
6
Sweeping 2400/2900Hz at 7Hz
1 0 1 0 0
Tone 7
Tone 5
7
Sweeping 2400/2900Hz at 1Hz
0 1 1 0 0
Tone 10
Tone 5
8
Siren 500/1200/500Hz at 0.3Hz
1 1 1 0 0
Tone 2
Tone 5
9
Sawtooth 1200/500Hz at 1Hz
0 0 0 1 0
Tone 15
Tone 2
10
Alternating 2400/2900Hz at 2Hz
1 0 0 1 0
Tone 7
Tone 5
11
Intermittent 1000Hz at 0.5Hz
General alarm
0 1 0 1 0
Tone 31
Tone 1
12
Alternating 800/1000Hz at 0.875Hz
1 1 0 1 0
Tone 4
Tone 5
13
Intermittent 2400Hz at 1Hz
0 0 1 1 0
Tone 15
Tone 5
14
Intermittent 800Hz 0.25s on 1s off
1 0 1 1 0
Tone 4
Tone 5
15
Continuous at 800Hz
0 1 1 1 0
Tone 2
Tone 5
16
Intermittent 660Hz 150mS on,
150mS off
1 1 1 1 0
Tone 18
Tone 5
17
Alternating 544Hz
(100mS)/440Hz(400mS)
0 0 0 0 1
Tone 2
Tone 27
18
Intermittent 660Hz 1.8s on, 1.8s off
1 0 0 0 1
Tone 2
Tone 5
19
1400Hz to 1600Hz sweep up over
1s - 1600Hz to 1400Hz sweep down
over 0.5s
0 1 0 0 1
Tone 2
Tone 5
20
Continuous 660Hz
1 1 0 0 1
Tone 2
Tone 5
21
Alternating 554/440Hz at 1Hz
0 0 1 0 1
Tone 2
Tone 5
22
Intermittent 554Hz at 0.875Hz
1 0 1 0 1
Tone 2
Tone 5
23
800Hz pulsing at 2Hz
0 1 1 0 1
Tone 6
Tone 5
24
Sweeping 800/1000Hz at 50Hz
1 1 1 0 1
Tone 29
Tone 5
25
Sweeping 2400/2900Hz at 50Hz
0 0 0 1 1
Tone 29
Tone 5
26
Simulated bell sound
1 0 0 1 1
Tone 2
Tone 1
27
Continuous 554Hz
0 1 0 1 1
Tone 26
Tone 5
28
Continuous 440Hz
1 1 0 1 1
Tone 2
Tone 5
29
Sweeping 800/1000Hz at 7Hz
0 0 1 1 1
Tone 7
Tone 5
30
420Hz repeating 0.625s on, 0.625s
off
Australian alert signal
1 0 1 1 1
Tone 32
Tone 5
31
1200/500Hz at 1 Hz
Prepare to abandon platform
0 1 1 1 1
Tone 11
Tone 1
32
Sweeping 500/1200Hz 3.75s on,
0.25s off 15Hz
1 1 1 1 1
Tone 26
Tone 1
Figure 7
Figure 6
BExDS110D DC Sounder
BExDS110D AC
Sounder
Volume Control
DIP Switch
DIP Switch
Volume Control
DC Terminals
Stage Headers
Stage Terminals
AC Terminals
S2
S3
-
+
S2
S3
C
N
L