E2S BExCL15-05D Instruction Manual - page 4
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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 4 of 5
BEACON CONNECTIONS
The cable connections are made into the terminal blocks on
the electronic pcb assembly located in the beacon section
enclosure. A four-way terminal block is provided on both AC
and DC beacons. Therefore there are two live terminals and
two neutral terminals for the input and output wiring on AC
units. On the DC units there are two +ve terminals and two -
ve terminals for the input and output wiring.
Wires having a cross sectional area of up to 4mm² can be
connected to each terminal way. When connecting wires to
the terminals great care should be taken to dress the wires so
that 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.
15)
Synchronised Operation
All BExCL15-05D beacon units that are connected to the
same supply line will have a synchronised flash rate at one
flash every second. To ensure that the units will be
synchronised check that the pin header is not fitted, i.e. the
two header pins are not shorted together (see Figures 4 and
5).
16)
Flip / Flop Operation
Two units can be mounted close to each other to form a flip-
flop operation, where the beacons will flash alternately. To
achieve this mode of operation, fit a pin header to the flip-
flop header pins on the electronics board, i.e. the two header
pins are shorted together, (see figures 4 and 5) on one of the
two beacons. The first flash on the beacon that has the
header fitted will be delayed by ½ second. The two beacons
will then flash alternately every ½ a second.
A
B
C
D
E
17)
Beacon End of Line Monitoring (DC Units)
On BExCL15-05D DC units, dc reverse line monitoring can
be used on the beacon section if required. All DC units have
a blocking diode fitted in their beacon supply input lines and
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.
18)
Loudspeaker End of Line Monitoring
On the BExCL15-05D loudspeaker section, dc line monitoring
can be used if required. Both the 100V Line units and the
Low Impedance units have a blocking capacitor fitted. It
should be noted that each loudspeaker has a 1M ohm bleed
resistor connected across the blocking capacitor and this
should be taken into account when selecting the value of the
end of line monitoring resistance.
The end of line monitoring resistor can be connected across
the terminals on the end of line unit. On the low impedance
units care must be taken with the polarity of the monitoring
voltage.
L
L
N
N
Figure 4
AC Input
Terminals
BExCL15-05D AC Beacon Section
BExCL15-05D DC Beacon Section
Flip / Flop
Pin Header
Figure 6
BExCL15-05D 100V Line Loudspeaker Section
BExCL15-05D 8 ohm and 16 ohm Loudspeaker Section
- - + +
Link
S2
S3
C
N
L
DC Input
Terminals
Interconnecting
Terminals
Figure 5
-
-
+
+
Flip / Flop
Pin Header
Figure 7
Thermal Fuse 84ºC