E2S BExCL15-05D Instruction Manual - page 3
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European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH sales@e-2-s.com Tel: +44 (0)208 743 8880
www.e-2-s.com Fax: +44 (0)208 740 4200
Document No. IS 2442-P Issue E 23-04-10
Sheet 3 of 5
Unit Type
Input
Beacon
Max.
Voltage
Current I/P Volts
BExCL15-05D
24V DC
300mA
30V
BExCL15-05D
12V DC
750mA
15V
BExCL15-05D
48V DC
180mA
58V
BExCL15-05D
230V AC
55mA
264V
BExCL15-05D
115V AC
140mA
126V
The input current to the beacon section will vary according to
the voltage input level. The current levels shown above are
for nominal input voltage. The 12V, 24V and 48V DC units
have a converter 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 above table also shows the maximum voltages at which
the beacon section can be operated.
11)
Cable Selection
When selecting the cable size consideration must be given to
the input current that each unit draws (see tables above), the
number of units on the line and the length of the cable runs.
The cable size selected must have the necessary capacity to
provide the input current to all of the units connected to the
line.
SAFETY WARNING: If the unit is 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.
12)
Earthing
Both AC and DC 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 beacon
section of the unit (see figures 2 and 3).
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.
The internal earth bonding wire ensures that a good quality
earth is maintained between the loudspeaker section casting
and the beacon section casting.
13)
Cable Glands
The BExCL15-05D unit has dual cable gland entries which
have an M20 x1.5 entry thread as standard or a PG13.5
thread as a special. 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 unit is 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.
14)
Cable Connections
The combined sounder beacon unit BExCL15-05D has
separate printed circuit boards in the loudspeaker and
beacon sections. The terminals for the loudspeaker are on
the printed circuit board in the loudspeaker section and the
terminals for the beacon are on the printed circuit board in the
beacon section (see figures 4&5 and 6&7). See section 8 of
this manual for access to the enclosure and the wiring
diagrams at the end of this manual.
LOUDSPEAKER CONNECTIONS (100V Line)
The 100V Line loudspeakers are fitted with a five way
terminal block. Terminal A is common and one of the other
terminals B, C, D or E should be selected depending on what
output level is required (see table below).
Terminals
Wattage
A - B
15W
A - C
7.5W
A - D
3W
A - E
1W
A single wire with a cross sectional area of up to 4mm² can
be connected to each terminal way or if an input and output
wire is required two 2.5mm² wires can be connected to each
terminal way. When connecting wires to the terminals great
care should be taken to dress the wire so that when the
beacon section 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.
LOUDSPEAKER CONNECTIONS (Low Impedance)
BExCL15-05D 8 ohm and 16 ohm low impedance
loudspeakers have dual input terminals on the pcb assembly
for input and output wiring. A cable of up to 2.5mm² can be
connected to each terminal. If dc line monitoring is used cut
the link on the board (see figure 7 and section 14 of this
manual).
Internal Bonding Wire Terminal
Internal Earth Terminal
2 off M20
Cable Entries
Figure 3