GST D-9105RExd Installation And Operation Manual

D-9105RExd
Digital Flame Proof Reflective Beam Detector

Installation and Operation Manual The Intelligent Solution

CONTENTS

I Overview........................................................................................1

II Features.........................................................................................1

III Technical Specifications.................................................................2

IV Structure and Operation Principle..................................................4

V Mounting and Wiring...................................................................... 5

VI Commission .................................................................................13

VII Operation .....................................................................................15

VIII Troubleshooting ...........................................................................17

IX Maintenance.................................................................................19

X Caution.........................................................................................19

XI Accessories..................................................................................20

D-9105RExd

Digital Flame Proof Reflective Beam Detector
Installation and Operation Manual The Intelligent Solution

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I Overview

D-9105RExd Digital Flame Proof Reflective Beam Detector is able to
output signal in two ways: loop output and contact output. When the

detector is connected with GST fire alarm control panel, information
between the detector and the control panel is transmitted through the

detection loop. The detector address can be programmed ranging from
1 to 242 using GST programmer. When the detector is not connected
with the control panel, fire and fault information can be transmitted

through contacts.
The detector must be used together with a reflector. The number of

reflector(s) to be used (one or four) depends on the distance from the
detector.

With excellent built-in microprocessor, the detector has strong ability of
analysis and judgment.The detector can carry out system commission,

compensation of environmental variation, and judgment of fire and fault
through fixed algorithm. Digital bus technology ensures quick and

complete information transmission. With new and reasonable design,
flexible judgment and precise alignment, it’s aesthetically pleasing and

easy to install and adjust. Its sensitivity can be set with hand held
programmer in field, decreasing the demand for cleanliness of field

conditions, and enlarging application areas.
The detector is applicable to either commercial areas or hazardous

industrial areas, such as Zone 1 and 2 of explosive gas areasand Zone
21 and 22 of combustible dust areas.

II Features

1. Wide operating voltage range, large monitoring areas.

2. Combination of transmitter and receiver ensures easy installation
and accurate optical pathway.

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3. Built-in microprocessor enables intelligent judgment of fire alarm
and fault.

4. The detector can calibrate automatically, which ensures one
person to complete adjustment in short time. It’s also convenient to

operate.

5. Self-diagnosis function can monitorfault with itself.

6. Automatic compensation for factors weakening received signals,

such as a certain amount of dust contamination, positional
excursion and ageing transmitter.

7. Compatible to digital bus protocol, easy to control and operate.

8. Electronically addressed.The address can be programmed in field.

9. Two sensitivity levels can be set in field.

10. The detector’s optical pathway is designed with strong
anti-interference ability.

11. SMT processing technology.

12. Attractive and decent appearance.

III Technical Specifications

1. Operating Voltage:Power supply voltage 15VDC~28VDC

Loop voltage 15V~28V

2. Operating Current:
Power current: Commission current ≤20mA

Standby current ≤12mA
Alarm current ≤22mA

Loop current≤2mA

3. Fire, fault contact output:
Fire relay: contact capacity is 28V/2A. Normally open in normal

state, closed in fire condition.
Fault relay: contact capacity is 28V/2A. Normally open in normal

state, and closed in fault condition.

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4. AdjustmentAngle: Vertical ±30 degrees, horizontal ±45 degrees

5. Maximum angular misalignment: ±0.5°

6. Sensitivity Level:

Level 1: high sensitivity
Level 2: low sensitivity

7. Indication of Detector State:
Commission: Green LED and yellow LED illuminatesorflashes in

a certain way. Refer to Section VI Commission for details.

Normal monitoring state: Red LED flashes periodically.
Fire: Red LED illuminates and fire output contact is closed when

the detector reports fire alarm. The fire signal can be transmitted to
the control panel through loop and has to be cleared by the control
panel. If it’s not connected with GST fire alarm control panel, the
fire signal has to be cleared by rebooting.
Fault: Yellow LED illuminates. The detector clears the fault signal
automatically if the fault condition disappears.
Optical pathway is obscured totally:the detector first gives fault
signal, turns on yellow LED and closes fault relay. 20 secondslater,
it reportsfire alarm, turns on red LED and closes fire relay. Yellow
LED is turned off,fault relay is disconnected. Note: In this case, it

does not necessarily mean there is a fire. After the
obscuration is removed, the detector clears the fault signal
automatically.

8. Operating Environment:

Temperature: -20C～+40C
Relative Humidity≤95%, non condensing

9. MonitoringArea: Maximum monitoring area: 14×100＝1400m

2

Maximum width: 14m

10. Length of Optical Pathway:8m～100m

11. Ingress Protection Rating: IP66

12. Dimensions:

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Length: 344mm
Width: 240mm
Depth: 212mm(with adjustment frame)

13. Material and Color of Enclosure: Stainless steel, metallic gray

14. Weight: Detector: 6kg Adjustment frame: 3.8kg

15. Mounting Hole Spacing:

Spacing for embedding: 70mm x 50mm

16. Explosion-proof mark: ExdIICT6/DIPA21TA,T6

IV Structure and Operation Principle

1. Appearance of the detector is shown in Fig. 1.

Fig. 1

2. Operation Principle

The detector and reflector are placed oppositely. The detector includes
a transmitter and a receiver. Infrared beam of certainintensity sent out

from the transmitter is reflected by the right-angle prisms of the reflector,
and then received by the receiver. The receiversimultaneously collects

and amplifies the returned infrared beam, analyze and judge the

Adjustment
Frame

Screw

Receiving
Window

Transmitting
Window

Detector

Wiring Hole

LED

Screw

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collected signals through its microprocessor. When the detector is in
normal monitoring state, the intensity of infrared beam received by the
receiver is steady at a certain level. When smoke particles enter the

detecting area, the intensity of infrared light reaching the receiver falls
owing to light scattering. When the smoke particles reach a certain

density, and the intensity of infrared light received is reduced below the
preset threshold value,the detector alarms fire and illuminates red LED.
The fire signal will be transmitted to fire alarm control panel connected

with the detector. Operation principle is shown in Fig. 2.

Fig. 2

V Mounting and Wiring

1. Ambient Conditions for Installation

The detector works on light obscuration principle, so any fixed or
moving obscuration in its optical pathway must be avoided when

locating it.
The wall for mounting either the detector or the reflector should be firm

and smooth. The detector is mounted vertical to the wall. The wall may
seem to be smooth, but corrugated or uneven, or may be changed by

the environment (in rainy season or in winter) and the installer should

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ensure the detector not affected by these factors. If the detector is
installed on sustaining rack similar to metal tube, make sure the
sustaining rack is installed firmly.

Not Fit For Locations where:

 The heightof the roof is over 40m.
 There is no roof at all.
 The space is lower than 1.5m.
 There are a lot of dust, powder or vapor.
 It is clean normally, but can be dusty in some special cases.
 Temperature is high. Note: Temperature at top part of a

workshop with transparent roof may be over 50℃ when
there is sunshine.

 There is no access for maintenance.
 The Mounting wall or fitting is greatly affected by mechanical

vibration.

 There are fixed or moving objects within 1m from the

detector’s optical pathway.

 There is strong magnetic field.

2. Mounting Height and Position

The mounting height of the detector and reflector should be most
accessible by smoke into beam zone. The following recommendations

are for reference:

(1) When space height is not over 5m, the detector and reflector should

be mounted on the two facing walls 0.5m from the ceiling, as shown
in Fig. 3.

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Reflector

Detector

4.5m

5m

Fig. 3

(2) When space height is between 5m and 8m, the detector and

reflectorshould be mounted on the two facing walls 0.5m to 1m from
the ceiling, as shown in Fig. 4.

Reflector

Detector

7m

6m

Fig. 4

(3) When space height is more than 8m, the roof is normally gabled

without ceiling, the detector and reflector should be mounted on the
two facing walls about 8m from the floor, ensuring that the vertical

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distancebetween the detector/reflectorand top of the building is not
less than 0.5m, as shown in Fig. 5.

Reflector

Reflector

Detector

Detector

12m

8m

Fig. 5

(4) For gable structure with space height about 8m, the detector and

reflector should be mounted on the two facing walls 1.5m from the
gabled girder,as shown in Fig. 6.

Detector

Detector Detector

Reflector Reflector

Reflector

6.5m

8m

Fig. 6

(5) If the surroundings are glass or transparent plastic, please place the

detector on the south wall in a building. If the detector cannot be

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mounted northward, then place the detector on the west wall. For
applications where sunlight can reach the detector after reflected,
please consider mounting a sunshade over the detector’s optical

pathway or contact our field application engineer for a solution.

3. Mounting

(1) Setting Length of Optical Pathway

Before installation, you need to set the length of optical pathway
first by setting device typeof the detector. The detector can work at

two length ranges. When mounting distance between the detector
and the reflector is not lessthan40m (but not more than100m),the

detector type should be set at “52”(factory default). When the
mounting distance between the detector and the reflector is less
than 40m (but more than 8m), the detector type should be set at

“51”. Refer to Section VII Operation for detailed setting methods.

(2) Mounting the detector

Align the detector and the reflector horizontally on the two facing
walls of the monitoring area, as shown in Fig. 2.
The detector is wall-mounted. First mount the adjustment frame

on the wall, then hang the detector on it, and finally secure them to
the wall. The steps are as follows:

a. Installing the adjustment frame
Secure the adjustment frame on the wall using an M6 expansion
bolt, as shown in Fig. 7.

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Fig. 7

b. Installing and adjusting the detector
Hang the detector with the lining board onto the adjusting frame

and secure them using M5 screw (Fig. 8).

Fig. 8

c. Installing the reflector

The reflector is mounted opposite the detector but in line with it.
When the distance between the detector and the reflector is more

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than 8m(less thanor equalto 40m), one reflectoris enough. When
the distance is more than 40m (less than or equal to 100m), four
reflectors are needed. Two 6 plastic expansion bolts are needed
to fix a single reflector. Mounting size is shown in Fig.9a. If four
reflectors are needed, place them seamlessly as shown in Fig. 9b.

Fig. 9a Fig. 9b (Not to Scale)

4. Wiring

(1) It is recommended to use multi-core copper cable with core cross

section≥1.0mm2, and external diameter 8mm~10mm in Zone 1
and 2. The cable shall meet field requirements on resistance to

heat, corrosion and fire. If there’s no special requirement, 10
screenedcable can be used. Connectthe screenlayer to the safety

earth position inside the housing. Cable layout shall also meet
requirement in explosive environment. It’s prohibited for the cable
to have jointsin explosiveenvironment.If a joint is necessary under

special condition, it’s only allowed in Zone 2 with the joint protected
with explosion-proof junction box.

(2) Connect 24VDC power cable (without polarity) to terminal D1 and

D2 of the detector. K11, K12 are volt-free fire output contacts. K21
and K22 are volt-free fault output contacts. No cable connection is

necessaryfor the reflectors. Terminals are shown in Fig. 12. Z1 and
Z2 are for polarity-insensitive connection with FACP loop. Refer to

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Fig. 10 for terminals.

K11K12K22 K21 D2 D1 Z2 Z1

Fig. 10

If the detector does not connected with GST fire alarm control panel,
D1 and D2 are to be connected with 24VDC power cable
polarity-insensitively, K11 and K12 are used as volt-free fire alarm

output contact, and K21 and K22 volt-free fault output contact, as in Fig.

11.

Fig. 11

(3) Connect the earth cable to the earth point on the housing.
(4) Connect the ribbon cable of the detector body to XT4 on the

interface board on the base, and then install the detector body onto
the base. Make sure the location element on the base in align with
the U-shaped groove on the detector body.

(5) Secure the body with the base with the 4Allen screws.
(6) After installation, double-check the following: If there is cracks or

holes on the surface of the housing; if the base and detector body

Wiring hole for
24VDC Power supply

Wiring hole for
contact signal

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are securely installed; if there is scratches or cracks in the glass
detector window; if there is sealing ring at the wiring hole; if the
sealing ring matches the cable gauge; if the locking nut at the

wiring hole is locked; if there is earth cable at earth mark position.

Note:

(1) If the detector connects with GST fire alarm control panel, only one

wiring hole is needed. The other one should be stopped with an
end cap, as shown in Fig. 1.

(2) If the detector does not connected with GST fire alarm control

panel, the two wiring holes are both needed, as shown in Fig. 11.

VI Commission

1. Steps

a) Take off the protective membrane carefully on the surface of the

reflector and the detector. Do not scratch or contaminate their
surfaces.

b) Power up the control panel and detector. Put the commission area

of the commission tool close to the part of detector with a mark

○

M .There may be two cases with the LEDs:

(1) Green LED flashes.
(2) Green LED illuminates continuously.

Then take away the commission tool.

c) If green LED flashes, it means the received light is quite weak (the

slower the flashing frequency, the weaker the received light signal
is). Tune the adjusting wheel and rotary rack on the detector to align

the light beam until green LED is lit continuously, showing that the
light received by the detector is strong. Then stop regulating and
enter step d).

If green LED illuminates continuously, it means the received light is

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quite strong, you can go straight to step d).

Note: Observe the detector’s optical pathway carefully to ensure
that the received light signal is reflected by the reflector rather

than by obscurations like wall, ceiling, or pillar. If uncertain, verify
by covering the reflector with opaque objects. If the green LED

flashes, it means the light is from the reflector. If the green LED
constantly lights, then the light is not from the reflector. The
optical pathway should be adjusted again.

d) Gently tighten the screws at the top middle and on the two sides of

the adjusting frame.

e) Put the magnet of commission tool close to the area marked with

○

M until yellow LED illuminates constantly, then remove the

commission tool quickly and make sure there is no obscuration on
the optical pathway. About 5 seconds later, the detector begins to

adjust automatically. Yellow LED flashing means weak light, green
LED flashing means strong light. If red LED, yellow LED and green
LED flash alternately, this means the detector failed to adjust

automatically and cannot enter normal monitoring state. Please
open the detector’s top cover and do adjustment from step b). If

yellowLED and green LED illuminate no more, and red LED flashes
periodically, this means the detector is at the best position and has
entered normal monitoring state. The commission is finished.

2. Fire alarm test

After the detector has been in normal monitoring state for 20 seconds,
cover the receiving window and transmitting window with the IR Light
Filter (please use the part for fire alarm test), the detector should report
fire alarm in 30 seconds and red LED should turn on. Remove the filter
and clear the fire alarm from the FACP,the red LED should go out, and
the detector should resume normal standby state.

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3. Fault test

Cover the receiving or transmitting window of the detector quickly with
the IR Light Filter to obscure the optical pathway. Yellow LED of the
detector should be turned on. Taking off the filter immediately, yellow
LED of the detector should be turned off.

4. Defect Detectors

For detectors failing in testing, please repair them following the
instructions in the sections of Troubleshooting and Maintenance, and
re-test them. If they fail again, return them to factory for repair.

VII Operation

The detector address, device type and sensitivity level can be simply
programmed by P-9910B hand held programmer. Open the detector’s

top cover, connect the ribbon cable from the detector body to XT2 of
the small connector board coming with the detector, and then connect
the I2C cable of hand held programmer (PS/2 cable) with XT1 of the

connector board (or directly connect the ribbon cable of the detector
body with the connector on the base, and the I2C cable to XT3 of the

interface board). Turn on the power of hand held programmer, input 2,
5, 9 and Function to enter I2C programming mode, the screen shows a
“0”. After programming, input 2, 5, 9 and Function again to exit I2C

programming mode and return to power-on state.

1. Reading Information

Using the hand held programmer, you can easily get original
information of the detector, such as the address. Refer to details
below:
(1) Enter I2C programming mode, the screen shows a “0”.
(2) Press Test, the screen shows the address code of the detector.
(3) Press Up, the screen shows sensitivity level and device type in

sequence.

(4) Press Down, the screen shows above contents in opposite way

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2. Setting Address Code

The detector offers address code programming for field application.
Refer to operation below:
(1) Enter I2C programming code, and the screen is a “0”.
(2) Input address code for programming (1~242).
(3) Press Program to start programming. “P”will be shown when

successful, otherwise an “E”will be shown.

(4) If programming is successful, press Clear, the screen will show a

“0”, and you can go on with further operations.

(5) If programming fails, pressClear, the screen will show a “0”, input

address code once again.

3. Setting Sensitivity Level

The hand held programmer can set two sensitivity levels to the

detector. 2 is sensitivity one, and 3 is sensitivity two, as detailed
below:

(1) Enter I2C programming mode of hand held programmer, and the

screen shows a “0”.

(2) Input unlock password, press Clear,and open the lock.
(3) Press Function then the figure “3”, the screen shows a “－”.
(4) Input sensitivity level to be set, and press Program to begin

programming. The screen will show a “P”if programming is
successful, otherwise it will show an “E”.

(5) Clear pressed, the screen shows “0”, and you can go on with

further operations.

4. Setting the Device Type

You can also set the device type of the detector through a programmer,
as detailed below:
(1) Enter I2C mode of the programmer, and the screen shows

“0”.

(2) Input unlock password, press Clear, and open the lock.

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(3) Press Function and then figure “4”, the screen shows “－”.
(4) Input the device type to be set, press Program to begin

programming. “P”will be shown when successful, otherwise “E”
will be shown.

(5) Pressing Clear shows “0”on the screen, and you can go on with

further operations.

5. Other Functions

(1) Automatic Compensation of Light

When dust exists in the working environment of the detector, the
transmitting window, receiving window and reflector may be covered

with dust, which will affect normal operation. In order to solve the
problem, the detector is designed withautomaticcompensation of light.
When there is dust on windows, the detector can judge the amount of

dust, and compensate the received signal through internal program
and circuit to ensure the detector can continue working normally. The

detector gives fault signal when dust on the lens and reflector surface
reaches a certain level and light compensation reaches the limit for the
detector to work normally.

(2) Self-diagnosis on Optical Signal

The detector has functions of checking transmitting, receiving and
amplifying circuit. When there is fault with these three parts of circuit

during operation, the detector will generate fault information.

VIII Troubleshooting

 If the detector reportsfault after long time running,please first check

if it’s damaged. Make sure it’s securely installed on the wall or other
fixed supporters. Then check the dust accumulation level and

position deviation to see if these has resulted in fault in automatic
compensation, and then consider other types of fault.

 If the surface of the transmitting/receiving window or the reflector is

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found to be contaminated,please clean it with soft clothand alcohol.
Avoid scratching the surface. Do not clean the surface using water
or other chemicals. After cleaning, please commission the detector

again to make it work in normal standby state.

Common problems and repair methods are as shown in Table 1.

Table 1

Problems Reasons Repair Methods

Working LEDs
not lit after
power up.

a) 24V power off
b) Working LEDs damaged.
c) Transient suppressor VD12 damaged.
d) DiodeVD1, VD2, VD10, VD11

breakdown resulting in short circuit

with ground.
e) N1, N2 damaged.
f) The flexible cable inside was not

connected, or not connected correctly.

If the problems are
mentioned in a) ~ e) ,
replace the component
with problem.
If in f) connect again in
right way.

Fault LED
constantly
illuminates
after power up

a) Device type

read by programmer is

not 51 or 52.

b) The optical pathway is not well

aligned.

a) Correct the device type.
b) Commission the

detector again. If
commissioning fails for
3 time, please return the
detector for repair.

Reports loop
fault after
power-up

a) Diode VZ1, VZ2, VD3 or VD4 is

broken, and is shorted to earth.

b) TVS diode VC13 is damaged.

Commission once more.

FACP reports
detector fault
after
registration.

The detector does not enter normal
operation state.

Re-commission the
detector.

The FACP
does not
register the
detector after
power-up

a) Loose connection with FACPloop.
b) 24V power is not applied.
c) N3 or N4 is damaged.
d) The flexible cable inside the detector

is not connected or not connected
well.

e) N1 or N2 is damaged.

Replace the faulty
component, re-connect the
flexible cable or re-register
the detector.

Green LED
flashes after
power-up
despite
adjustment

a) Transmitting diode or circuit is

damaged.

b) Receiving diode or amplifying circuit

is damaged.

Replace the faulty
component.

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Reports fault
after a period
of normal
operation

The detector cannot work normally. Commission once more

Reports fire
after operation
for some time,
and reports
fault after
restarted

The detector has deviated due to
external vibration.

Commission once more

Fire signal
cannot be
cleared

a) There is obscuration on the optical

pathway between the detector and
the reflector.

b) The angle of optical pathway has

changed and need to be aligned
again.

c) The transmitting diode or circuit

damaged.

d) The photodiode or amplifying circuit

damaged.

For a) andb), commission
once again.
For c) and d), replace the
faulty component.

The control
panel can’t
receive
fire or fault
signals.

No registration. Register again.

IX Maintenance

 The detector is fire protection product, operation of which must be

well recorded by the personnel on duty and shift.

 Personnel on duty should be familiar with the functions and

operation process of the device to avoid mis-operation.

 Test alarm function once every 6 months.

X Caution

 Protect the detectorfrom damage in maintenance.
 Install and maintain the detector in strict compliance with safety

regulations for explosive and hazardous areas.

 Never open the housing with power on.
 The detector housing should be earthed.

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 Power up only after all devices are connected.
 Commissionthe detector after installation and maintenance.
 During commissioning, the FACP may report detector fault which

does not affect commissioning.

 The detectorbase should be fixed directlyon solid wall or frame that

will not be deformed by vibration. Any deformable material such as
paperboard, plastic board, foam board or thin wood board should
not be placed between the base and the wall or the bracket.

XI Accessories

Accessories provided with the detector are as follows:

 FourM6 x 60 expansion bolts.
 Four M5 cross recessed pan head screws.
 One adjustment bracket.

 One IR Light Filter.
 One Commission Tool.

 OneAllen key M8.
 One connector board.

GST China
Gulf Security Technology Co., Ltd.

No. 80, Changjiang East Road, QETDZ, Qinhuangdao, Hebei,
P. R. China 066004

Tel: [phone]
Fax: [phone]

Email: [e-mail]
www.gst.com.cn

GST UK
Global System Technology PLC

Lion Court, Staunton Harold Hall, Melbourne Road, Ashby de la Zouch,
Leicestershire, England LE65 1RT
Tel: [phone]

Fax: [phone]
Email: [e-mail]

www.gst.uk.com

GST Dubai

Global System Technology PLC

PO Box 17998 Unit ZA04 JEBELALI Free Zone,
Dubai, UAE

Tel: [phone]
Fax: [phone]

Email: [e-mail]

www.gst.uk.com