Line Monitoring - E2S D1xB2LD2 Series Instruction Manual

9.2

Line Monitoring

On the D2xB1X unit, 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 in the explosion
proof enclosure. If an end of line resistor is used it must have
the following values:
Minimum resistance 3K3 Ohms
Minimum resistance 500 Ohms
The resistor must be connected directly across the +ve and
-ve terminals as shown in the following drawing. Form the
resistor legs as shown in Fig. 7a, fit the resistor across the
two terminals, as shown in Fig. 7b.
Fig. 7a End of Line Resistor Forming
End of Line
Resistor
Fig. 7b End of Line Resistor Placement
_______________________________________________________________________________________________________________________________
European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH
Document No. D191-00-401-IS
Minimum Power 0.5W
Minimum Power 2.0W
Issue 1 03-06-2019
10) Settings
10.1 Flash Rate Setting
Warning – high-intensity light source. Avoid
looking directly at the light source for
extended periods of time.
The D1xB2LD2 beacon can produce different flash patterns
as shown in Table 1. The flash patterns are selected by
operation of the flash setting DIP switch on the PCB, Fig 8.
Switch
Setting S1 Mode
(123456)
000000 Steady High Power
000001 Steady Low Power
100000 Flashing 1Hz
101000 Flashing 1.5Hz
010000 Flashing 2Hz
110000 Flashing Double Strike
001000 Flashing Triple Strike
Fig. 8 Dip Switch
1=ON; 0=OFF
Example shown:
100000 = Flashing 1Hz
(Default setting)
11) Earthing
The unit has an external and an internal earth terminal,
(please see fig 9).
Internal earthing connections should be made to the internal
Earth terminal in the base of the housing using a ring crimped
terminal to secure the earth conductor under the earth clamp.
The earth conductor should be at least equal in size and
rating to the incoming power conductors.
External earthing connections should be made to the M5
earth stud, using a ring crimp terminal to secure the earth
conductor to the earth stud. The external earth conductor
"
should be at least 4mm in size.
External Earth
Stud
Internal Earth
Terminal
Fig. 9: Internal & External Earth Locations
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Sheet 5 of 6
S2 Mode S3 Mode
Flashing 1Hz Flashing Triple Strike
Flashing 1Hz Flashing Triple Strike
Flashing Double Strike Flashing Triple Strike
Flashing 2Hz Flashing Double Strike
Flashing Triple Strike Flashing Triple Strike
Steady High Power Flashing Triple Strike
Flashing 2Hz Flashing Double Strike
Fig. 8 DIP Switch location
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