E2S BEDS120D Serie Manual De Instrucciones página 2

Area Classification Dust:
Zone 21 Explosive dust air mixture likely to occur in
normal operation.
Zone 22 Explosive dust air mixture not likely to occur,
and if it does, it will only exist for a short time.
IP Rating: IP67
Equipment Category:
Ambient Temperature Range:
-50°C to +55°C Gas Groups IIA, IIB and IIC
-50°C to +70°C Gas Group IIA and IIB
6)
Sounder Location and Mounting
The location of the sounders should be made with due regard
to the area over which the warning signal must be audible. The
sounders should only be fixed to services that can carry the
weight of the unit.
The sounder should be securely bolted to a suitable surface
using the 7mm diameter boltholes in the stainless steel U
shaped mounting bracket (see figure 1). The angle can then be
adjusted in the direction that the sound is primarily required to
cover. This can be achieved by loosening the two large bracket
screws in the side of the unit, which allow adjustment in steps
of 18°. On completion of the installation the two large bracket
adjustment screws on the side of the unit must be fully
tightened to ensure that the unit cannot move in service.
Plastic Acoustic Horn
(Anti-static Plastic)
Figure 1
7)
Access to the Flameproof Enclosure
In order to connect the electrical supply cables to the sounder
it is necessary to remove the flameproof cover to gain access
to the flameproof chamber. To achieve this remove the four M6
hexagon socket head screws (see figure 2) and withdraw the
flameproof cover taking extreme care not to damage the
flameproof joints in the process.
Note the four M6 screws are Class A4-80 stainless steel
and only screws of this category can be used on these
sounders. It is therefore important that these screws and their
spring washers are kept in a safe place during installation.
__________________________________________________________________________________________________________________________________
European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH
Document No. IS 2451-P
T100ºC Ta < +55ºC
T115ºC Ta < +70ºC
2G/D
Flameproof Flameproof
Chamber Cover
S/S Mounting
Bracket
Issue E 19-02-10
On completion of the cable wiring installation the flameproof
joints should be inspected to ensure that they are clean and
that they have not been damaged during installation. Also
check that the earth bonding wire between the two casting
sections is secure and the 'O' ring seal is in place.
W hen replacing the flameproof cover casting ensure that it is
square with the flameproof chamber casting before inserting.
Carefully push the cover in place allowing time for the air to be
expelled. Only after the cover is fully in place should the four
M6 Stainless Steel A4-80 cover bolts and their spring washer
be inserted and tightened down. If the cover jams while it is
being inserted, carefully remove it and try again. Never use the
cover bolts to force the cover into position.
8)
Power Supply Selection
It is important that a suitable power supply is used to run the
sounders. The power supply selected must have the
necessary capacity to provide the input current to all of the
sounders connected to the system.
The following table shows the input current taken by the
various sounder units:-
Unit Type
BExDS120D
BExDS120D
BExDS120D
BExDS120D
BExDS120D
BExDS120D
BExDS110D
BExDS110D
BExDS110D
BExDS110D
BExDS110D
BExDS110D
The input current will vary according to the voltage input level
and the frequency of the tone selected. The current levels
shown above are for the 440Hz Continuous tone @ nominal
input voltage. The 24V and 48V DC units and the 230V AC,
115V AC and 110V AC units have a switching voltage
regulator circuit and therefore the input current level will
decrease slightly as the input voltage in increased and will
increase slightly as the input voltage is reduced. The 12V units
do not have a voltage regulator and therefore their input
current will increase when the input voltage is increased.
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www.e-2-s.com
Sheet 2 of 4
4 off M6 Cover Screws
Input Input
Voltage Current
24V DC 800mA
12V DC 850mA
48V DC 420mA
230V AC 90mA
110V AC 200mA
115V AC 180mA
24V DC 265mA
12V DC 195mA
48V DC 130mA
230V AC 56mA
110V AC 93mA
115V AC 110mA
Tel: +44 (0)208 743 8880
Fax: +44 (0)208 740 4200
External Earth
Terminal
Figure 2
Max.
I/P Volts
30V
15V
58V
264V
121V
126V
30V
15V
58V
264V
121V
126V
(2)