European Safety Systems Ltd.
Impress House, Mansell Road, Acton, London W3 7QH
www.e2s.com
Tel: +44 (0)208 743 8880
Document No. D211-00-401-IS
Issue 1
20-08-22
Sheet 4 of 7
L
N
+ +
- - S2 S3
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 exceed +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.
8) Cable Connections
Electrical connections are to be made into the terminal blocks
on the PCBA located in the enclosure. See section 6 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 2-off wires must be a maximum cross
sectional area of 2.5mm². Strip wires to 8mm. Wires may also
be fitted using ferrules. Terminal screws need to be tightened
down with a tightening torque of 0.56 Nm / 5 Lb-in. When
connecting wires to the terminals great care should be taken
to dress the wires so that when the cover 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.
9) AC Wiring
3-off 2-way terminal blocks are provided on the AC beacon
for power. There are 2-off Live, 2-off Neutral and 2-off Earth
terminals in total.
For further wiring schematics refer to document D211-06-401
9.1. PCBA Terminals
Fig. 3 D2XB1LD2 AC Terminals
10) DC Wiring
3-off 2-way terminal blocks are provided on the AC beacon
for power. There are 2-off +ve, 2-off –ve, 1-off Stage 2 and 1-
-off stage 3 terminals in total.
For further wiring schematics refer to document D211-06-401
10.1. PCBA Terminals
Fig. 4 D2XB1LD2 DC Terminals
10.2. Line Monitoring
On D2xB1LD2 DC units, DC reverse line monitoring can be
used if required. All DC beacons have a blocking diode fitted
in their supply input lines. 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 the following values:
Min. Resistance
Min. Power
24V DC
3.9KΩ
0.5W
1KΩ
2W
48V DC
15KΩ
0.5W
3.9KΩ
2W
