_______________________________________________________________________________________________________________________________
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. D201-00-031-IS Issue 1 18-08-16 Sheet 5 of 7
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).
13.2.2 DC Units Second and Third Stage Tone
Selection
For units set up for –ve switching (default setting):
Stage two (S2) Operation
Power +ve and –ve, link
a -ve supply line to the
S2 terminal.
Header pins alters stage
2 tone.
Stage three (S3) Operation
Power +ve and –ve, link
a -ve supply line to the
S3 terminal.
Header pins alters stage
3 tone.
For units set up for +ve switching (refer to 13.3):
Stage two (S2) Operation
Power +ve and –ve, link
a +ve supply line to the
S2 terminal.
Header Pins alters stage
2 tone.
Stage three (S3) Operation
Power +ve and –ve, link
a +ve supply line to the
S3 terminal.
Header pins alters stage
3 tone.
+ -
2
3
S
to
p
1
23
S2
S3
Stop +ve
-v
e
Fig. 7 DC Terminals
13.3 Stage Switching Polarity (DC Units
Only)
The BExH120D DC hootronic sounders have the facility to
use ve or –ve switching to change the tone to the
second and third stages. Negative switching is the default
setting. For –ve switching connect the two headers on the
pcb to the left-hand (marked –ve) and centre pins. For +ve
switching connect the headers to the right hand (ve)
and the centre pins. (Refer to Fig. 8)
+
- 2
3
S
to
p
1
23
S2
S3
Stop +v
e
-ve
Stage Headers Set for –ve Switching
Stage Headers Set for +ve Switching
Fig. 8 Stage Switching Polarity
13.3 Stop
Terminal
The user can remotely activate and deactivate the
BExH120D Hootronic DC sounder by switching a connection
from the “Stop” terminal to the –ve or +ve supply lines,
depending on which switching mode is being used +ve or –ve
(see above) whilst the unit is powered. To achieve the “tail
off” sound at switch off the unit must remain powered.
Sound Headers
+
C/-
S2
S3
Stop
Stage
Headers
C/-
C/-
