_______________________________________________________________________________________________________________________________
European Safety Systems Ltd.
Impress House, Mansell Road, Acton, London W3 7QH [email protected] Tel: +44 (0)208 743 8880
www.e2s.com Fax: +44 (0)208 740 4200
Document No. D211-00-401-IS-SC Issue E 02-03-2020 Sheet 3 of 10
116,0mm [4,52in.]
116,0mm
[4,52in
.]
179,2mm [6,99in.]
130,1mm [5,07in.]
132,4m
m [5,17in
.]
Ø6,92mm [Ø0,270in.]
3/4" NPT
(For pole mount)
M4 X 12mm
Countersunk screw,
customer to fix
116,0mm [4,52in.]
116
,0m
m
[4
,5
2in.]
168,0mm [6,55in.]
130,1mm [5,07in.]
1
32,4
m
m
[5,17i
n.
]
Ø6,92mm [Ø0,270in.]
3/4" NPT
(For pole mount)
M4 X 12mm
Countersunk screw,
customer to fix
4) Location and Mounting
The location of the beacon should be made with due regard
to the area over which the warning signal must be visible. It
should only be fixed to services that can carry the weight of
the unit.
The D2x beacon should be secured to any flat surface using
the two 7mm fixing holes in the feet of the base. The 2-off
mounting feet supplied with the unit must first be fitted to the
base using the 2-off M4 X 12mm countersunk screws
provided. Additional feet are available as spare parts if
required. The unit can also be pole mounted using the ¾”
NPT Entry in the centre of the base. See Fig. 1a/1b.
Fig. 1a Fixing Location for General Signaling or Private Mode
Fig. 1b Fixing Location for Public Mode
5) Access to the Enclosure
To access the enclosure, loosen the four M4 posi pan head
screws and withdraw the cover.
Fig. 2 Accessing the Enclosure.
To replace cover, check that the ‘O’ ring seal is in place.
Carefully push the cover in place. Insert M4 screws with fibre
washers and tighten to 3.0Nm torque.
6) Selection of Cable, Cable Glands, Blanking
Elements & Adapters
When selecting the cable size, consideration must be given
to the input current that each unit draws (see Table 1), the
number of beacons 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 sounders
connected to the line.
When selecting the cable size consideration must be given to
the voltage drop over the length of the cable run to ensure
the min. input voltage at the point of use (voltage range, see
section 13)
The voltage drop depends on:
-
The total current draw if the devices installed on this
cable run
- The wire size and total length of the cable run,
determining the total resistance of this cable run
-
The minimum output voltage supplied by the power
supply
The voltage drop and input voltage at the point of use can be
calculated as follows (for guidance on the resistance of
different wire sizes see section 14)
Total Wire resistance =
Wire resistance / 1000ft x length of cable run x 2
(length of cable run needs to be multiplied by two to account
for two wires going to and from the unit)
Total current draw =
Current draw per unit x number of units
Voltage Drop = Total current draw x Total wire resistance
Minimum output of power supply =
Min. voltage at point of use + voltage drop
The entries can be ordered with one of the following options:
2-off M20 x 1.5 thread, 2-off ½” NPT thread & 1-off ¾” NPT
thread
For ambient temperatures over +45ºC the cable entry
temperature may 70ºC. Therefore suitable heat
resisting cables and cable glands, rated to min. 75ºC must be
used.
If a high IP (Ingress Protection) rating is required then a
suitable sealing washer must be fitted under the cable glands
or blanking plugs.
For use in explosive dust atmospheres, a minimum ingress
protection rating of IP6X must be maintained.
For use in explosive gas atmospheres, a minimum ingress
protection rating of IP54 must be maintained.
NPT plugs should be greased before insertion.
7) Cable
Connections
Electrical connections are to be made into the terminal blocks
on the PCBA located in the enclosure. See section 5 of this
manual for access to the enclosure.
M4 Cover
Screw (4-off)
(Appropriate cable
entry devices to be
customer supplied)
Cover
Warning – High voltage may be present,
risk of electric shock. DO NOT open when
energised, disconnect power before
opening.
Warning –
Hot surfaces. External surfaces
and internal components may be hot after
operation, take care when handling the
equipment.
