E2S D1 B2LD2 Series, Instruction Manual, Page: 5 / 12

E2S Warning Signals Impress House, Mansell Road, Acton, London W3 7QH www.e2s.com Tel: +44 (0)208 743 8880
Document No. D191-00-401-IS Issue 3 28-11-22 Sheet 5 of 6
Fig. 8 Dip Switch
1=ON; 0=OFF
Example shown:
100000 = Flashing 1Hz
(Default setting)
9.1 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 Power 0.5W
Minimum resistance 500 Ohms Minimum Power 2.0W
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
Fig. 7b End of Line Resistor Placement
10) Settings
10.1 Flash Rate Setting
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 S2 Mode S3 Mode
(123456)
000000 Steady High Power Flashing 1Hz Flashing Triple Strike
000001 Steady Low Power Flashing 1Hz Flashing Triple Strike
100000 Flashing 1Hz Flashing Double Strike Flashing Triple Strike
101000 Flashing 1.5Hz Flashing 2Hz Flashing Double Strike
010000 Flashing 2Hz Flashing Triple Strike Flashing Triple Strike
110000 Flashing Double Strike Steady High Power Flashing Triple Strike
001000 Flashing Triple Strike Flashing 2Hz Flashing Double Strike
Fig. 8 DIP Switch location
11) Earthing
The unit has an external and an internal earth terminal, (please
see fig 9).
Please note that for AC supply voltage product versions the
Earth terminal on the PCBA does not provide an earth
connection to the product enclosure. The enclosure must be
independently earthed using either the external or internal
earth fixing point, (see fig 9 and notes below).
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.
Fig. 9: Internal & External Earth Locations
End of Line
Resistor
Warning – high-intensity light source. Avoid
looking directly at the light source for
extended periods of time.
External Earth
Stud
Internal Earth
Terminal