to dress the wires so that when the cover is inserted into the
chamber the wires do not exert excess pressure on the
terminal blocks. This is particularly important when using
cables with large cross sectional areas such as 2.5mm².
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. A 4-way terminal block is provided on the AC beacon
for power. There are 2-off Live and 2-off Neutral terminals in
total.
12.1 Wiring
Diagrams
Fig 3a. BExCS110-05D AC Simplified Block Diagram for
simultaneous operation
Fig 3b. BExCS110-05D AC Simplified Block Diagram for
independent operation
12.2 Sounder 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 and Third Stage Tone
Selection
To select the second and third stage tones on the BExCS110
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. 4a Sounder AC Terminals
Fig. 4a Beacon 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. BExCS110-05D AC Simplified Block Diagram for
simultaneous operation (negative switching)
DIP Switch
Volume Control
Stage
Terminals
AC
Terminals
S2
S3
C
N
L
L
L
N
N
Interconnecting Terminals
to sounder PCB
(simultaneous
mode of operation)
Flip / Flop
Pin Header
