__________________________________________________________________________________________________________________
European Safety Systems Ltd.
Impress House, Mansell Road, Acton, London W3 7QH [email protected] Tel: +44 (0)208 743 8880
www.e2s.com Fax: +44 (0)208 740 4200
Document No. D190-00-301-IS-SC Issue: 8 24-04-19 Sheet 6 of 8
Loosen thumbscrew
before rotating
beacon board
Loosen thumbscrew
before rotating
beacon board
Rotate beacon
board to access
sounder board
terminals
10) DC Wiring
11.1 Wiring Diagrams
Fig. 7a DC Simplified Block Diagram (negative
switching)
Fig. 7b DC Simplified Block Diagram (positive
switching
11.2 Units First Stage Tones
Stage one (S1) operation: Simply connect the supply voltage to
the + and - supply terminals, (see fig. 8).
11.3 DC Units Second, Third and Fourth 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. Dip switch 2 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.
Stage four (S4) operation : Power +ve and
–ve, link a -ve
supply line to both the S2 & S3 terminals. Dip switch 1 alters
stage 4 tone.
For units set up for +ve switching (refer to 9.1):
Stage two (S2) operation : Power +ve and
–ve, link a +ve
supply line to the S2 terminal. Dip switch 2 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.
Stage four (S4) operation : Power +ve and
–ve, link a +ve
supply line to both the S2 & S3 terminals. Dip switch 1 alters
stage 4 tone.
Fig. 8 DC Terminals
11) Earthing
The unit has both a primary internal and secondary external
earth fixing point.
Internal earth connections should be made to the internal Earth
terminal (see Fig. 3 and 4. It should be fitted to the internal
earth point using a ring crimp terminal to secure the earth
conductor.
In addition, external earth connections can be made to the M5
earth stud (see Fig. 2), using a ring crimp terminal to secure
the earth conductor to the earth stud. The external earth crimp
ring should be located between the two M5 plain washers
provided and securely locked down with the M5 spring washer
and M5 nut.
The earth conductor should be at least equal in size and rating
to the incoming power conductors but at least a minimum of
0.82mm
2
/ 18AWG in size.
12) Flash Rate Settings
Fig. 9 DC Flash Settings
(Flip-Flop Mode not available on D1xC1X05 / D1xC2X05)
Fig. 10 AC Flash Settings
13) End Of Line Monitoring (DC Units Only)
On D1xC1DC
&
D1xC2DC units, dc reverse line monitoring can
be used if required. All DC alarm horns 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 3k3 ohms and a
minimum power rating of 0.5 watts or a minimum resistance
value of 500 ohms and a min. 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. 11 End Of Line Resistor
End Of Line Resistor
STAGE 4 = S2 + S3
(Customer
Supplied Switches)
+ + - -
S2 S3
Beacon boards are
pre-wired to
sounder boards
STAGE 4 = S2 + S3
(Customer
Supplied Switches)
