30309767 Issue 1.04
Features
High bright red LEDs are used as light source.
Sound level: 85dB (A weighted, 3m in front).
Description
DC-9404(IS) Intrinsically Safe Conventional Sounder
and DC-9403(IS) Intrinsically Safe Conventional
Sounder
Strobe
(hereinafter
called
the
sounder/sounder strobe) is a kind of audible/audible
and visual alarm device used to warn people in field
when fire occurs. It’s applicable to zone 1 and zone 2
of areas with explosion-proof requirement in
petroleum and chemical industries. It can match with
I-9333 Interface.
Base with 25.5mm high are available.
Connection & Wiring
Terminals on the base are shown in Fig. 2.
5mm
55mm
80mm
Arch knock off Hole
G
1
K
1
D
D
2
1
2
Z
2
K
S
Z
Water leak hole
Fig. 1 Fig. 2
D1+ (9), D2- (7): Connected with I-9333 Interface,
polarized.
Intrinsic Safety Parameters for D1/D2:
Ui=28V
，
Ii=93mA
，
Ci=0
，
Li=0
，
Pi=0.65W
D1 is connected with (3) of the safety barrier and D2
to (4).
Recommended Wiring
Intrinsically safe cable with cross section not less
than 1.5mm
2
, subject to local codes.
。
Installation
Warning: Before installing the device, disconnect
the power from the loop.
Before installation, make sure the enclosure is
in good condition and marking complete.
When the sounder/sounder strobe is surface
mounted, it should be placed 0.2m from the ceiling
for normal space height. When conduit is embedded,
the base can be mounted on the electrical box.
Its mounting method is shown in Fig. 3. Water leak
hold should installed downward.
Conduit
Electrical Box
Wire hole
Water leak hole
should downward
Fig. 3
The base and the sounder/sounder strobe are
twisted together. When mounting, remove the
sounder strobe, thread cables through the cable
entry in the base and connect with corresponding
terminals, then twist the sounder/sounder strobe
onto the base.
If the sounder/sounder strobe is required
anti-removal, knock down the arch knock-off hole as
shown in Fig. 1 and fix it with ST2.9
×
6.5 tapping
screws (in this case, it must be removed by a special
tool).
Application
The sounder/sounder strobe can match I-9333
Interface to form an intrinsically safe system. The
system wiring is shown in Fig. 4.
Non-intrinsincally Safe Loop
Intrinsincally Safe Loop
D1 D2 Z1 Z2
I-9333 Circuit
Board
I-9333 Interface
24VDC
Fire Alarm Control Panel
L-
L+
2(-)
1(+)
GST-AS-200 Zener
Safety Barrier
Safety Area
4(-)
3(+)
Hazardous Area
1
Z
2
Z
K
2
S
D
2
G
1
K
D
1
Fig. 4
DC-9404(IS)
Intrinsically Safe Conventional Sounder
DC-9403(IS)
Intrinsically Safe Conventional Sounder Strobe
