_______________________________________________________________________________________________________________________________
European Safety Systems Ltd.
Impress House, Mansell Road, Acton, London W3 7QH [email protected] Tel: +44 (0)208 743 8880
www.e-2-s.com Fax: +44 (0)208 740 4200
Document No. D201-00-401-IS Issue 1 02-08-16 Sheet 4 of 6
12) AC Wiring
A 6-way terminal block is provided on the AC beacon. There
are 2-off Live, 2-off Neutral and 2-off Earth terminals in total.
12.1
Wiring Diagram
Fig. 4 AC Simplified Block Diagram
Fig. 5 AC Terminals
13) DC Wiring
A 6-way terminal block is provided on the AC beacon. There
are 2-off +ve, 2-off –ve, 1-off stage 2 & stage 3 terminals in
total.
13.1
Wiring Diagram
Fig. 6 DC Simplified Block Diagram (negative switching)
13.2
Stage Switching
13.2.1
Units First Stage Tones
13.2.2
DC Units Second, Third Stage Tone
Selection
Stage two (S2) Operation
Power +ve and –ve, link
a -ve supply line to the
S2 terminal.
Dip switch 1 alters stage
2 tone.
Stage three (S3) Operation
Power +ve and –ve, link
a -ve supply line to the
S3 terminal.
Dip switch 1 alters stage
3 tone.
Fig. 7 DC Terminals
13.3
Line Monitoring
On BExBGL2DDC units, dc reverse line monitoring can be
used if required. All DC sounders 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. If an end of line resistor is used it
must have a minimum resistance value
of 3k3Ω and a
minimum power rating of 0.5 watts or a minimum resistance
value of 500Ω and a minimum power rating of 2 watts.
The resistor must be connected directly across the +ve and -
ve terminals as shown in the following drawing. The resistor
leads should be kept as short as possible.
Fig. 8 End of Line Resistor Placement
Stage one (S1) Operation
Simply connect the
supply voltage to the +
and - supply terminals,
(see fig. 6).
(Customer Supplied Switches)
End of Line
Resistor
L
L
N
N
E
E
S3
S2
-
-
+
+
