E2S GNExB2LD2 Instruction Manual page 5

Cable Glands
The cable gland entries have an M20 x 1.5 entry thread. Only
use suitably rated and certified cable glands, as per type of
approval, which must be suitable for the type of cable being
used and also meet the requirements of the current
flameproof installation standards (see section 7.1).
Blanking Plugs
When only one cable entry is used the other entries must be
closed with suitably rated and certified blanking plugs as per
type of approval.
Any unused cable entries must be closed with suitably rated
and certified blanking plugs.
Ingress Protection
If a high IP (Ingress Protection) rating is required, then a
suitable sealing washer must be fitted under the cable glands
or blanking plugs.
A minimum ingress protection rating of IP6X must be
maintained for installations in explosive dust atmospheres.
For use in Class I Division II locations, in order to maintain
the db type protection, flameproof conduit seals and/or cable
glands must be used.
Adapters
The GNEx Beacon Range can be supplied with the following
types of adapters:
M20 to ½" NPT
M20 to ¾" NPT
M20 to M25
It is important to note that stopping plugs cannot be fitted
onto adapters, only directly onto the M20 entries.
Any other adapters used must be suitably rated as per the
applicable standards.
If the installation is made using conduit, openings must have
a sealing fitting connected as close as practical to the wall of
the enclosure, but in no case more than the size of the
conduit or 50mm, whichever is the lesser.
8) Flash Pattern Settings
Warning – high-intensity light source. Avoid
looking directly at the light source for
extended periods of time.
The GNExB2 beacon can produce different flash patterns as
shown in Table 2. The flash patterns are selected by
operation of the flash setting DIP switch on the PCB, Fig 6.
European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH
Document No. D156-00-401-IS Issue 3 19-10-21
Figure 6: DIP Switch Location.
Switch
S1 Mode
Setting
(for AC & DC)
(123456)
Steady
000000
High Power
Steady
000001
Low Power
Flashing
100000
1Hz
Flashing
101000
1.5Hz
Flashing
010000
2Hz
Flashing
110000
Double Strike
Flashing
001000
Triple Strike
Table 2: Switch Positions for Flash Patterns
8.1. Synchronised Operation
All GNExB2LD2 beacons 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 DIP switch is set to1 Hz (see Figure 6).
9) End of Line Monitoring (DC Units)
All DC units have a blocking diode fitted in their supply input
lines. An end of line monitoring diode or an end of line
monitoring resistor can be connected across the +ve and –ve
terminals in the flameproof chamber. If an end of line resistor
is used it must have a minimum resistance value of 3k3 ohms
and a minimum wattage of 0.5W or a minimum resistance
value of 500 ohms and a minimum wattage of 2W.
10) Interchangeable & Spare Parts
Warning – Hot surfaces. External surfaces
and internal components may be hot after
operation, take care when handling the
equipment.
The beacon lenses are interchangeable, contact European
Safety Systems Ltd for a replacement lens available in
various colours.
www.e2s.com
S2 Mode S3 Mode
(DC only) (DC only)
Flashing Flashing
1Hz Triple Strike
Flashing Flashing
1Hz Triple Strike
Flashing Flashing
Double Strike Triple Strike
Flashing Flashing
2Hz Double Strike
Flashing Flashing
Triple Strike Triple Strike
Steady Flashing
High Power Triple Strike
Flashing Flashing
2Hz Double Strike
Tel: +44 (0)208 743 8880
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