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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. D210-00-011-IS Issue 5 20-04-2020 Sheet 4 of 8
12) AC Wiring
A 2-way terminal block is provided on the AC Sounder for
power. There are 1-off Live and 1-off Neutral terminals in
total. A 3-way terminal is provided for stage switching. There
are 1-off stage 2, 1-off stage 3 and 1-off common terminals in
total.
12.1 Wiring Diagrams
Fig 3. BExS120 AC Simplified Block Diagram
12.2 Stage Switching
12.2.1
Units First Stage Tones
Stage one (S1) Operation
Simply connect the supply
voltage to the L and N
supply terminals, (see fig.
4).
12.2.2 AC Units Second & Third Stage Tone
Selection
To select the second, third and fourth stage tones on the
BExS110 AC sounder.
Stage two (S2) Operation
Power L and N, link the
Common-C and S2
terminal.
Dip switch alters stage 2
tone.
Stage three (S3) Operation
Power L and N, link the
Common-C and S3
terminals.
Dip switch alters stage 3
tone.
Fig. 4 AC Terminals
13) DC Wiring
A 4-way terminal block is provided on the DC Sounder. There
are 1-off +ve, 1-off -ve, 1-off stage 2 and 1-off stage 3
terminals in total.
13.1
Wiring Diagrams
Fig. 5a DC Simplified Block Diagram (negative switching)
Fig. 5b DC Simplified Block Diagram (positive switching)
13.2
Stage Switching
13.2.1
Units First Stage Tones
Stage one (S1) Operation
Simply connect the supply
voltage to the + and -
supply terminals, (see fig.
6).
DIP Switch
Volume Control
Stage
Terminals
AC
Terminals
S2
S3
C
N
L