If the high output BExS120D sounders
are used at high ambient temperatures, i.e. over +40ºC, then
the cable entry temperature may exceed +70ºC and therefore
suitable heat resisting cables must be used, with a rated
service temperature of at least 110ºC.
11) Earthing
Both AC and DC sounder units must be connected to a good
quality earth. The units are provided with internal and
external-earthing terminals, which are, both located on the
terminal chamber section of the unit (see figures 2 and 3).
When using the internal earth terminal ensure that the
stainless steel M4 flat washer is between the incoming earth
wire and the enclosure.
When using the external earth terminal a cable crimp lug
must be used. The cable lug should be located between the
two M5 stainless steel flat washers. The M5 stainless steel
spring washer must be fixed between the outer flat washer
and the M5 stainless steel nut to ensure that the cable lug is
secured against loosening and twisting.
12) Cable Glands
The sounders have dual cable gland entries with M20 x1.5
entry threads. Only cable glands approved for Ex 'd'
applications can be used, which must be suitable for the type
of cable being used and also meet the requirements of the Ex
'd' flameproof installation standard EN60079-14:2008 /
IEC60079-14:2007.
SAFETY WARNING: If the high output BExS120D sounders
are used at high ambient temperatures, i.e. over +40ºC, then
the cable entry temperature may exceed +70ºC and therefore
suitable heat resisting cable glands must be used, with a
rated service temperature of at least 110ºC.
If a high IP (Ingress Protection) rating is required then a
suitable sealing washer must be fitted under the cable gland.
When only one cable entry is used the other one must be
closed with an Ex 'd' flameproof blanking plug, which must be
suitably approved for the installation requirements.
13) Cable Connections
See drawing C and D
Tone Selection and 2nd and 3rd Stage Alarms
14)
See wiring diagram E
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Volume Control
15)
See drawing F
End of Line Monitoring (DC Units)
16)
On BExS120D and BExS110D 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
Tone Selection
Stage 1
Frequency Description
Continuous 1000Hz
1
Toxic Gas Alarm
2
Alternating 800/1000Hz at 0.25s
intervals
3
Slow Whoop 500/1200Hz at 0.3Hz
with 0.5s gap repeated
4
Sweeping 800/1000 at 1Hz
5
Continuous at 2400Hz
6
Sweeping 2400/2900Hz at 7Hz
7
Sweeping 2400/2900Hz at 1Hz
8
Siren 500/1200/500Hz at 0.3Hz
9
Sawtooth 1200/500Hz at 1Hz
10
Alternating 2400/2900Hz at 2Hz
11
Intermittent
1000Hz
at
0.5Hz
General alarm
12
Alternating 800/1000Hz at 0.875Hz
13
Intermittent 2400Hz at 1Hz
14
Intermittent 800Hz 0.25s on 1s off
15
Continuous at 800Hz
16
Intermittent
660Hz 150mS
150mS off
17
Alternating 544Hz
(100mS)/440Hz(400mS)
18
Intermittent 660Hz 1.8s on, 1.8s off
19
1400Hz to 1600Hz sweep up over
1s - 1600Hz to 1400Hz sweep down
over 0.5s
20
Continuous 660Hz
21
Alternating 554/440Hz at 1Hz
22
Intermittent 554Hz at 0.875Hz
23
800Hz pulsing at 2Hz
24
Sweeping 800/1000Hz at 50Hz
25
Sweeping 2400/2900Hz at 50Hz
26
Simulated bell sound
27
Continuous 554Hz
28
Continuous 440Hz
29
Sweeping 800/1000Hz at 7Hz
30
420Hz repeating 0.625s on, 0.625s
off Australian alert signal
31
1200/500Hz at 1 Hz
Prepare to Abandon Platform
32
Sweeping 500/1200Hz 3.75s on,
0.25s off 15Hz
DIP Switch
Stage Selection
Settings
1 2 3 4 5
Stage 2
Stage 3
0 0 0 0 0
Tone 31
Tone 11
1 0 0 0 0
Tone 17
Tone 5
0 1 0 0 0
Tone 2
Tone 5
1 1 0 0 0
Tone 6
Tone 5
0 0 1 0 0
Tone 3
Tone 27
1 0 1 0 0
Tone 7
Tone 5
0 1 1 0 0
Tone 10
Tone 5
1 1 1 0 0
Tone 2
Tone 5
0 0 0 1 0
Tone 15
Tone 2
1 0 0 1 0
Tone 7
Tone 5
0 1 0 1 0
Tone 31
Tone 1
1 1 0 1 0
Tone 4
Tone 5
0 0 1 1 0
Tone 15
Tone 5
1 0 1 1 0
Tone 4
Tone 5
0 1 1 1 0
Tone 2
Tone 5
on,
1 1 1 1 0
Tone 18
Tone 5
0 0 0 0 1
Tone 2
Tone 27
1 0 0 0 1
Tone 2
Tone 5
0 1 0 0 1
Tone 2
Tone 5
1 1 0 0 1
Tone 2
Tone 5
0 0 1 0 1
Tone 2
Tone 5
1 0 1 0 1
Tone 2
Tone 5
0 1 1 0 1
Tone 6
Tone 5
1 1 1 0 1
Tone 29
Tone 5
0 0 0 1 1
Tone 29
Tone 5
1 0 0 1 1
Tone 2
Tone 1
0 1 0 1 1
Tone 26
Tone 5
1 1 0 1 1
Tone 2
Tone 5
0 0 1 1 1
Tone 7
Tone 5
1 0 1 1 1
Tone 32
Tone 5
0 1 1 1 1
Tone 11
Tone 1
1 1 1 1 1
Tone 26
Tone 1