__________________________________________________________________________________________________________________
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. D211-00-611-IS-SC Issue: E 02-03-2020 Sheet 3 of 13
147,0mm [5,73in.]
116,0mm [4,52in.]
213,3m
m [8,
32in
.]
165,6mm [6,46in.]
9,7mm [0,38in.]
6,7mm
[0,26
in.]
Ø6,9mm [Ø0,27in.]
310,3m
m [12,1
0
in
.]
125,0mm [4,88in.]
168,0mm [6,55in.]
147,0mm [5,73in.]
116,0mm [4,52in.]
213
,3
mm [
8,
32in.]
165,6mm [6,46in.]
9,7mm [0,38in.]
6,7
m
m
[0,
26
in.]
Ø6,9mm [Ø0,27in.]
31
0,
3m
m [
12,
10
in
.]
125,0mm [4,88in.]
179,3mm [6,99in.]
Beacon
Cover
M4 Screws
(4-off)
M5 Earth
Stud
Sounder
Cover
M4
Screws
(4-off)
Fig. 1a Fixing locations Public Mode Alarm.
Fig. 1b Fixing locations Private Mode Alarm.
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 fiber
washers and tighten to 3Nm 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
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.
Wires having a cross sectional area between 0.5 mm² to
2.5mm² can be connected to each terminal way. If an input and
output wire is required the 2-off Live/Neutral or +/- terminals can
be used. If fitting 2-off wires to one terminal way the sum of the
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.
