Line Monitoring - E2S D1 B2X05 Series Instruction Manual

Terminals
L L N N E
Fig. 6 D1xB2XAC Terminals
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. D191-00-201-IS
Minimum Power 0.5W
Minimum Power 2.0W
Issue 1 03-06-2019
10) Earthing
The unit has an external and an internal earth terminal,
(please see fig 8).
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
External Earth
Stud
Internal Earth
Terminal
Fig. 8: Internal and External Earth Locations
sales@e2s.com
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Sheet 7 of 8
in size.
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