30307309 Issue 1.01
Features
Intelligent signal-processing and communication
with integrated microprocessor.
Intelligent algorithm ensures quick response with
reduced false alarm.
Three sensitivity levels.
High sensitivity, reliable performance.
Dust-proof, damp-proof and corrosion-proof.
Description
DC-9104Exd is a light-sensitive detector that detects
fire by picking up the ultraviolet light from flaming
material. It’s designed for areas where an open fire is
liable to occur with large amount of radiation and no
smoldering stage, or where quick response to a fire is
required. This detector can be applicable to zone 1
and 2 of explosive areas.
The detector is able to work either in addressable
mode connecting with GST intelligent fire alarm
control panel to transmit signal through detection loop
or in non-addressable mode connecting to 24VDC
power supply to transmit signal by outputting different
resistance values.
Connection and Wiring
Screened 2-core cable with cross section 1mm
2
or
above, and outer diameter
φ
8 mm is required for field
wiring. Please follow the steps below:
(1) Rotate down the back cover and the cable
fastening nut.
(2) Thread a proper length of the cable through the
fastening nut, metal washer and joint washer in
sequence.
(3) Peal away the outer layer of the cable with 5mm of
metal core exposed, rotate in the cable together
with the joint washer, metal washer and the
fastening nut into the detector housing, and fasten
the nut using a spanner.
(4) Connect the cables to corresponding terminals of
the detector, and the screen layer to the safety
earth position inside the housing.
(5) Fasten the back cover with tools, and make sure
the detector is earthed through its safety earth
position on the cover.
Installation
(1) Fig. 1 is the schematic diagram for installing the
detector.
(2) Please check the following after installation:
z
There shall not be any crack or air bubbles.
The back cover and the detector shall be
securely fastened.
z
There shall not be any scratch or crack on the
detecting window.
z
There shall be joint washer in the wiring hole.
z
The joint washer matches with the cable
diameter.
z
The cable fastening nut is locked.
z
There is earth cable at the “earth” mark.
z
The detection window shall face the protected
area.
Note: The detector shall be installed in compliance
with relative installation codes. Make sure the
housing is in good condition.
Fig. 1
Application
Schematic of system connection is shown in Fig. 2
(addressable mode) and Fig .3 (non-addressable
mode).
Fig. 2
Fig. 3
Operation
In addressable mode, Terminal Z1 and Z2 are to be
connected with the loop of FACP polarity-insensitively.
The FACP polls the detector status through the loop,
and displays its fault and fire alarm messages.
In non-addressable mode, 24VDC power supply can
be directly applied to Terminal Z1 and Z2. K1 and K2
output different resistance in different conditions. If the
resistance is 4.7k
Ω
, the detector is in normal standby
state; if the terminals are shorted, the detector is in fire
condition; if the terminals are open, the detector is in
fault condition.
The detector has three sensitivity levels. The factory
default is Level 1. The address and sensitivity can be
read and changed using P-9910B Programmer.
Please refer to
P-9910B Hand Held Programmer
Operation Manual
for details.
The Intelligent Solution
DC-9104Exd Digital Flame Proof
UV Flame Detector
M6
×
60
M3
×
16
FAC
P
Z1
Z2
Z
1
Z
2
K
1
K
2
DC-9104Exd Detector
Hazardous Area
Safety Area
In
p
u
t Eq
u
ip
m
en
t
Z
1
Z
2
K
1
K
2
DC-9104Exd Detector
24VDC
Signal
Input
Hazardous Area
Safety Area
Z1and Z2 connects with the loop
of FACP, polarity-insensitive.
Z1, Z2: Power input,
polarity-insensitive.
K1, K2: Signal output.
Resistance between the
terminals is 4.7k
Ω
normally.
Shorted in fire alarm
condition.
Open in fault condition.
