GST DC-9105E User manual

DC-9105E Conventional Reflective Beam Detector
Installation and Operation Manual
Content
1. OVERVIEW............................................................................................1
2. FEATURES ............................................................................................1
3. TECHNICAL SPECIFICATIONS.........................................................2
4. STRUCTURE AND OPERATION PRINCIPLE.................................3
5. INSTALLATION AND CABLING........................................................5
1) AMBIENT CONDITIONS .........................................................................5
2) MOUNTING HEIGHT AND POSITION......................................................6
3) INSTALLATION .......................................................................................9
6. COMMISSIONING ..............................................................................14
7. CAUTIONS...........................................................................................17
8. OPERATION........................................................................................18
1) READ INFORMATION...........................................................................18
2) SET SENSITIVITY LEVEL.....................................................................18
3) SET LENGTH TYPE.............................................................................18
4) OTHER FUNCTIONS............................................................................19
9. MAINTENANCE..................................................................................20
10. ACCESSORIES...............................................................................20
11. WEEE INFORMATION...................................................................20
12. LIMITED WARRANTY....................................................................21
13. PRODUCT WARNINGS AND DISCLAIMERS...........................21
APPENDIX 1 WARNING............................................................................22
APPENDIX 2 WARRANTY........................................................................23

DC-9105E Conventional Reflective Beam Detector
Installation and Operation Manual
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1. Overview
DC-9105E Conventional Reflective Beam Detector (hereinafter
referred to as the detector) is a non-addressable smoke detector with
infrared optical beam. The reflective detector features of fire alarm and
fault contacts.
Combining a transmitter and a receiver, the detector connects only
one reflector on the opposite wirelessly. In this way, it is simple for
on-site wiring. One reflector or four reflectors are used based on
different mounting distance from a detector to a reflector.
The detector has an integral visible indicator and 2 bits digital tube.
It is easy to install and align the reflector as the visible indicator directs
the emitting infrared light. Alongside, it is convenient for commissioning
with 2 bits digital tube displaying received light intensity.
The detector is suitable for various applications including large
storage zones, shopping malls, fitness centers, gyms, exhibition halls,
hotel lobbies and areas with complex ceilings.
2. Features
1) Providing wide operating voltage and protection area.
2) Combining a transmitter and a receiver, one end connects wires
simply.
3) Judging fire alarms and faults intelligent with a built-in MCU.
4) Commissioning in field becomes easier than before with the help of
the visible indicator and 2 bits digital tube.
5) Monitoring faults inside the detector due to self-diagnosis ability.
6) Providing compensation for such sensor signal changes caused by
the build-up of dirt, position offset or a component aging.
7) Four sensitivities are available in field.
8) Standard: EN 54-12: 2015

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Installation and Operation Manual
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3. Technical Specifications
1) Operating Voltage: DC 24V (18V～28V）
2) Operating Current:
Standby Current ≤12mA
Alarm Current ≤22mA
Commission Current ≤20mA
3) Angle of Adjusting: -6～+6
4) Fire, fault contact output
Fire output contact: contact capacity is 28V/2A. Normally open in
normal state, closed in fire condition.
Fault output contact: contact capacity is 28V/2A. Closed in normal
state, and open during commissioning, power off or in fault
condition.
5) Maximum Angular Misalignment: ±0.5
6) Sensitivity Level (Any of the following sensitivities can be set at
allowed distance):
Level 1: 1.3dB
Level 2: 1.8dB (factory default)
Level 3: 2.3dB
Level 4: 2.8dB (not EN 54-12:2015 approved)
7) State Indication:
Commission: Green LED and yellow LED illuminate or flash in a
way. Refer to Section VI Commission.
Normal Standby State: LED flashes red regularly.
Fire: Fire LED illuminates steadily and fire output contact is closed
as the detector in alarm.
Fault: Fault LED illuminates steadily and fault output contact is
open as the detector in fault.
Completely Obscure the Optical Beam Path: The detector gives

DC-9105E Conventional Reflective Beam Detector
Installation and Operation Manual
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fault signals and illuminates fault LED. In this condition, the
detector releases fire alarm as the optical beam path is obscured
more and more. Note: It doesn’t mean a fire occurs in this
case. As the obscuration is removed, fault signals are
cleared by the detector and fire signals are cleared by
switching off the power.
8) Operating Environment:
Temperature: -10C～+55C
Relative Humidity ≤95%，non condensing.
9) Protection Area: The detector can protect the area of 1400m2
(14×100＝1400m2) )with the widest 14m.
10) Length of Optical Beam Path: 5m～100m
11) Ingress Protection Rating:
IP 20 for ordinary environment;
IP 66 with glue treatment for special environment.
12) Dimensions:
206mm x 95mm x 95mm
13) Material and Color of Enclosure: ABS, grey
14) Weight: About 450g
15) Mounting Hole Spacing:
Dimensions for Embedded Mounting: 158mm
Mounting Hole Spacing for Surface Mounting: 79mm×96mm
4. Structure and Operation Principle
1) Appearance of the detector is shown in Fig.1.

DC-9105E Conventional Reflective Beam Detector
Installation and Operation Manual
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Fig.1
2) Componentsinside the detector and positions with glue are shown
in Fig. 2.
Fig. 2.
Cable
Entry
Commission
Zone
LEDs
Receiving Len
Emitting Len
Adjusting Wheel
Mounting Direction
Rotary Rack
Reed Switch
To Be Glued
To Be Glued
Power Cord
Flexible Cable
Digital Tube
Visible Red Light

DC-9105E Conventional Reflective Beam Detector
Installation and Operation Manual
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00m
Smoke
Reflector
Mounting
Bracket
Infrared
Beam
Detector
Fig. 3
5. Installation and Cabling
1) Ambient Conditions
The detector monitors and gives alarms by attenuation changes.
So, constant or causal obscuration should not appear in the optical
beam path.
The wall should be solid and flat to mount a detector or a reflector.
The detector is mounted vertically to the wall. Even if the wall looks like
flat, it may be uneven or become corrugated due to weather changes.
Therefore, the installer should ensure that those factors can’t have an
impact on the wall for detectors. In addition, the metal rack is used for
mounting detectors should be fixed without any vibration.
Not Fit for Locations Where，
➢The ceiling is higher than 40m.
➢It is not roofed.

DC-9105E Conventional Reflective Beam Detector
Installation and Operation Manual
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➢The ceiling is lower than 1.5m.
➢There is much dust, powder or vapor.
➢It generates a lot of dust in some certain conditions even
though it is clean in normal state.
➢The places are very hot. Note: The air temperature in the
transparent ceiling will exceed 55℃while the sun is
shining.
➢Places are not maintained.
➢The wall or bracket for mounting the detector is not stable due
to nearby mechanical vibration.
➢There are fixed or moving objects obscured within 1m of the
optical beam path.
➢The strong magnetic field exists.
2) Mounting Height and Position
The height for mounting a detector and reflector/s should be
depended on whether smoke enters the optical beam path directly and
quickly. Here are some references below.
a) As the space height is not over 5m, the detector and reflector/s
should be mounted on the walls which are opposite, having about
0.5m from the ceiling. Refer to Fig. 4.

DC-9105E Conventional Reflective Beam Detector
Installation and Operation Manual
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Reflector
Detector
5m
4.5m
Fig.4
b) As the space height is between 5m and 8m, the detector and
reflector/s should be mounted on the walls which are opposite,
having about from 0.5m to 1m from the ceiling. Refer to Fig. 5.
Detector
Reflector
7m
6m
Fig.5
c) As the space height is over 8m, the roof is normally gabled

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Installation and Operation Manual
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without ceiling. In this case, the detector and reflector/s should be
mounted on the walls which are opposite, having about 7m from the
floor and over 0.5m from the top. Refer to Fig. 6.
Detector Detector
Reflector Reflector
7m
8m
Fig.6
d) As the space height with gable structure is about 8m, the
detector and reflector/s should be mounted on the walls which are
opposite, having about 1.5m from the gabled girder. Refer to Fig. 7.