GST 852RPX Installation And Operation Manual

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GST852RPX LCD Repeater Panel
Installation and Operation Manual

The Intelligent Solution

CONTENTS

I General ................................................................................................................. 1

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

III Technical Specifications........................................................................................1

IV Structure and Operation Principle.........................................................................1

V Operation .............................................................................................................. 3

VI Troubleshooting.....................................................................................................4

VII Cautions................................................................................................................ 4

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GST852RPX LCD Repeater Panel
Installation and Operation Manual

The Intelligent Solution

I General

GST852RPX LCD Repeater Panel (the repeater panel) is designed with a
microprocessor to display the user code and description of the alarming detector
(detectors) and generate audible and visual signals simultaneously.

II Features

Through communication loops, GST852RPX LCD repeater panel can connected with
GST200, GST500 and GST5000 fire alarm control panels, processing and displaying
the data transmitted from the control panels. Command of Silence and Reset can be
sent to the control panel, and the Silence command can stop the output of sounder.
When one fire alarm control panel monitors several floors or several zones, a repeater
panel can be installed on each floor or in each zone instead of zonal control panel.

III Technical Specifications

1. Display Range: Each screen displays no more than 1 piece of fire information. The
following can be displayed in turn.

2. Display Capacity: Not more than 126 pieces of fire information can be displayed by
the repeater panel.

3. Wiring: Connected with fire alarm control panel through polarity sensitive two wires;
connected with power supply through two 24VDC power lines, polarity insensitive.

4. Operating environment:
Temperature: 0℃～+40℃
Relative Humidity: ≤95%, non condensing

5. Power supply: centralized electrification by 24VDC power supply.

6. Quiescent power consumption ≤2W; Maximum power consumption ≤5W

IV Structure and Operation Principle

1. GST852RPX LCD repeater panel is wall-mounted. Fig.1 shows its appearance.

Page 1

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GST852RPX LCD Repeater Panel
Installation and Operation Manual

The Intelligent Solution

230

52

24.5

R

11.5

210

Silence

Fire

On

GST852RPX LCD Repeater Panel

Silence

1

6

5

4

9

8

7

Reset

Self
Test

0

<>

3

2

150

Unit: mm

Fig.1

2. Front panel of the repeater panel is shown in Fig. 2.

230mm

160

5

.

2

45

?

3

0

3

1

Silence

Silence

210mm

Fire

On

Reset

2

6

4

5

9

7

8

Self

Test

0

<>

GST852RPX LCD Repeater Panel

Fig. 2

Description of keys

1) Silence Key: In monitoring state, the repeater panel enters in power save

mode and it will exit the current state when this key is pressed again. In alarm
state, pressing Silence key and inputting password can stop the sound of the
repeater panel. Then send the command of silence to the control panel. Press
it again, the repeater panel will cancel the silence command and transmit the
command to the control panel

2) Reset Key: Press Reset and then input correct password to clear the fire

information and send the reset command to the control panel.

3) Self-test key: It is only available in monitor state.

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GST852RPX LCD Repeater Panel
Installation and Operation Manual

∧

4)

key: It is used to scroll the screen. In alarm state, press this key can stop

∨

The Intelligent Solution

the circular display and start scrolling screen when the fire information is more
than 1 piece. In monitor state, pressing it can enter the screen of device code
defining.

5) 0～9: To define the device code.
Description of indicators:

1) On LED: Green, lit when the repeater panel is working.

2) Fire LED: Red, lit when any of the detectors reports fire.

3) Silence LED: Yellow, lit when the repeater panel is in mute state.

3. Operation Principle

Adopt A T89S52 as it s MCU, the repeater panel can communicate with fire alarm control
panel through RS485. The microprocessor can make the LCD display the relevant
information and activate the sounder strobe.

V Operation

1. Sound indication description

1) Fire Alarm Sound: buzzer 0.25s on, 0.25s off

2) Fault Sound: buzzer 0.5s on, 4.5s off

2. Adjusting LCD definition

If the LCD display isn’t clear, you can adjust the LCD.ADJ adjusting resistor to make the
LCD display clearly.

3. System setting

∧

In monitor state, the repeater panel enters system setting screen, with

pressed and

∨

6-digit password (666666 is super password) input.

1) Password modification: Selecting number 1, the screen of password

modification appears, then input a new password twice. If confirmed correct,
the repeater panel enters main screen with sound indication (0.25s).
Otherwise, it enters main screen silently.

2) Device code setting: Selecting number 2, the device code can be set. Input 2

digit device code, then press Reset key, the main screen can be accessible.
The buzzer vocalizes sound (0.25s) to indicate the successful setting. The
device code ranges from 1 to 64. After the code number is over 64, it will return
to 1. If the device code setting failed, the repeater panel enters the main screen
without any sound. Press non-numerical figure during setting, it exits the
current screen and enter the main screen.

Note: Check the wires before powering up, such as short circuit, open circuit
or wrong connection.

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GST852RPX LCD Repeater Panel
Installation and Operation Manual

The Intelligent Solution

VI Troubleshooting

Problem Reasons Solution Remark
Connecting with a

fire alarm control
panel, the repeater
panel hasn’t been
registered after
starting.

Communication
between the
repeater panel and
the fire alarm
control panel is
abnormal.
(1) The polarization
of Communication
two-wire is
reversed.
(2) The wires are
threaded in the
same tube with
strong current
circuit.

(1) Change the
polarization of
communication
two-wire.
(2) Separate the
two wire cables
from strong current
circuit.

The LED of
repeater panel
flashes regularly
when it is normal.

VII Cautions

1. This panel is precise electronic product and must be maintained by trained
personnel.

2. This product must be in the charge of trained personnel.

3. We take charge of repairing the repeater panel. Any problem occurs, please
contact us in time. GST won’t be responsible for any result if you repair it by self.

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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

Enterprise Glade, Bath Lane, Moira, South Derbyshire,
England. DE12 6BD
Tel: + 44 (0) 1283 225 478
Fax: + 44 (0) 1283 220 690

Regional Office

PO Box 17998 Unit ZA04 JEBEL ALI Free Zone,
Dubai, UAE
Tel: [phone]
Fax: [phone]

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

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