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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. D191-00-401-IS Issue 1 03-06-2019 Sheet 4 of 6
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7) 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 section 12), 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 beacons
connected to the line.
The entries are 2-off M20 x 1.5 thread & 3-
off ¾” NPT thread
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.
For high ambient temperatures the cable entry temperature
or the cable branching point temperature may exceed 60ºC
and therefore suitable heat resisting cables and cable glands
must be used, with a rated service temperature of at least the
values stated below:
8) Cable Connections
The units have 2-off M20 x 1.5 threaded entries and 3-
off ¾”
NPT x 14 threaded entries.
Electrical Connections are to be made into the terminal
blocks using solid or stranded wire, sizes 0.5-2.5mm2 / AWG
20-14. Wire insulation needs to be stripped 6-7mm. Wires
may be fitted securely with crimped ferrules. Terminal screws
need to be tightened down with a tightening torque of 0.4 Nm
/ 3.5 Lb-in.
See section 5 of this manual for access to the enclosure.
9) Wiring
6-way terminal block is provided on the beacons for power.
The DC units have 2-off +ve, 2-off
–ve, a stage 2, a stage 3
and an Earth terminal.
9.1
Wiring Diagrams
Fig. 3 D1xB2LD2DC024 Simplified Block Diagram
DC Terminals
Fig. 4 D1xB2LD2DC024 Terminals
The AC units have 2-off Live, 2-off Neutral and 2-off Earth
terminals.
Fig. 5 D1xB2LD2AC Simplified Block Diagram
AC Terminals
Fig. 6 D1xB2LD2AC Terminals
Max Ambient
temperature (°C)
50 55 60 65 70 75 80
Req. cable gland
rating (°C)
65 70 75 80 85 90 95
