GASTRON GTC-542 User manual

GTC-542
Instruction Manual
Headquarters / Engineering research laboratory :
23 Gunpo Advance d Industry 1-ro(Bugok-dong), Gunpo-si, Gyeonggi-do
Tel [phone] Fax [phone]
Yeongnam business office / Plant :
55 Gonghangap-gil 85beon-gil, Gangseogu, Busan Metropolitan City
Tel [phone] Fax [phone]
E-mail : [email protected]
www.gastron.com
Read in detail for correct use.

Gas & Flame
Detection System
GTC-542
Instruction Manual
www.gastron.com
02_03
Thank you very much for purchasing a product from GasTron Co. Ltd.
Our Gastron Co.Ltd. is a company specialized in Gas Detector & Gas Monitoring System and have been
recognized by many customers for the best quality and use convenience. We always seek to help our
customers to find the product they need and we continuously research to develop gas detectors that satisfies
our customers. From now on, you can solve all problems related to gas detectors with the products of
Gastron. We Gastron, will be responsible for your satisfaction.
This user manual describes operation and simple maintenance methods etc. for the gas detector. Please read
carefully and store it in a safe place. Using it as a reference will help a lot when you have a question during
use.
* KOSHA GUIDE : P-135/6-2018
Calibration must be performed at a frequency requested by the manufacturer and shall be performed quarterly when
the calibration period is not specified.
In case of a problem after purchasing the product,
please contact the address below.
· Address : 23 Gunpo Advanced Industry 1-ro,
Gunpo-si, Gyeonggi-do
· Tel : [phone]
· Fax : [phone]
· URL : www.gastron.com
· e-mail : [email protected]
The product and manual are subject to change without a notice for the product's functional improvement and ease of use.
■Foranaccurateoperationofthegasdetector,pleaseperformaninspectionandacalibrationat
least once per 6 months.
( * In reference to KOSHA GUIDE: P-135/6-2018 / 7.2 In-house inspection, section 2)
■Foranaccurateoperationofthegasdetector,inspectionandcalibrationusingareferencegas
before measurement is recommended.
■Failuretocalibratemayresultinmalfunctionoftheequipmentduetoagingofthesensor.
■Onlyanindividualspecializedingasdetectormaydisassemblethedevice.
■Wirespecificationforthepowercablemustbedecidedinreferencetothe"Installationcablelength"
section.
■Pleasecontactourcompany'stechnicalsupport,e-mail,orwebsiteforinquiriesrelatedto
inspection and calibration of the gas detector.
Greetings

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04_05
ContentsContents
GTC-542
Instruction Manual
6.6.7. Maintenance Mode ································································································································ 33
6.6.8. Factory Initialization mode ······················································································································ 36
6.6.9. Calibration Data Initialization Mode······································································································· 37
7. Interface Configuration············································································································································· 38
7.1. MODBUS RS485····················································································································································· 38
7.1.1. Interface Setting······································································································································ 38
7.1.2. MODBUS RS485 Register map··············································································································· 38
8. Drawings and Dimensions········································································································································ 39
8.1. Drawing 1 ····························································································································································· 39
8.2. Drawing 2 ····························································································································································· 40
9. Revision History··························································································································································· 41
1. Overview ······································································································································································ 6
2. Characteristics ····························································································································································· 6
3. Specifications······························································································································································· 7
3.1. Basic Specifications ············································································································································ 7
3.2. Mechanical Specifications ································································································································· 7
3.3. Electrical Specifications (Standard Type)··········································································································· 8
3.4. Environmental Specifications ···························································································································· 8
4. Name and Description of Each part························································································································ 9
5. Installation···································································································································································· 12
5.1. Power Configuration ········································································································································· 12
5.2. Signal Terminal Configuration··························································································································· 13
5.3. Relay Terminal Configuration ···························································································································· 14
5.4. 3-wire Type Gas detector Connection Method ································································································ 15
5.5. 2-wire Type Gas detector Connection Method ································································································ 15
6. Operation Method ····················································································································································· 16
6.1. Power ON··························································································································································· 16
6.2. Power Display····················································································································································· 16
6.3. Measuring Mode ··············································································································································· 17
6.4. Test Mode ·························································································································································· 17
6.5. Stand-by Mode ·················································································································································· 18
6.6. Operation Status Setting ··································································································································· 18
6.6.1. Setting Table············································································································································ 18
6.6.2. PROGRAM MODE ·································································································································· 20
6.6.3. ALARM Mode ········································································································································· 23
6.6.4. Option Mode (Option setting) ··············································································································· 27
6.6.5. Test Mode················································································································································ 30
6.6.6. 485 Setting Mode ·································································································································· 32

www.gastron.com
06_07
GTC-542
Instruction Manual 3. Specications
Receiver of GTC-542 is a receiver with high-performance A/D converter and micro-processor and has various functions
built-in. The receiver of GTC-542 is a stand-alone type that is connected to one detector and is protected by a case made
of ABS material. It displays the concentration using FND digital display and 3-color bar graphic LED.
It has primary, secondary, and tertiary alarm functions and fault alarm function.
In an event of error, GTC-542 stand-alone receiver displays audible signal (buzzer) and visible signal (Alarm LED) and has
a function to hold the maximum measured value.
GTC-542 receiver can be controlled remotely to release the alarm and can perform associated control functions since it
has an output for an error (SPDT contact).
GTC-542 receiver provides 4-20mA. DC output for the measured value and is able to communicate digitally using RS-485
network signal (Option).
ITEMS SPECIFICATION
Measuring Value Display 1.8"3-DigitFND(2Color)&Bargraph(32segment/3Color)
Measuring Range Capable to display 00.0 ~ 999
Alarm Indicator Visible Indicator: 3-Alarm, Stand-by LED, Warning Light
Audible Indicator: Buzzer Signal (85 dB)
Alarm Output Signal 3-Level Alarm, Trouble Relay
Reset Signal RESET Switch and Remote Reset Control
Input Signal 4~20 mA DC
Output Signal Isolated RS-485 Modbus (Option)
Approvals Classification CE
Basic Interface Analog 4-20mA current interface
Option MODBUS RS485 Board
Warranty Transmitter 2 Years
Sensor 1 Year
ITEMS SPECIFICATION
Dimension 235(W) × 355(H) × 117(D) mm
Weight including Sensor App. 1.4kg
Mounting Type Wall mount
Body Material ABS
3.2. Mechanical Specifications
2. Characteristics
1. Overview
3.1. Basic Specifications

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08_09
GTC-542
Instruction Manual
[Figure 1. GTC-542 Components]
3.3. Electrical Specifications (Standard Type)
ITEMS SPECIFICATION
Input Voltage(AC Type/Standard)
Absolute min:
Nominal:
Absolute max:
AC 90V
AC 220V
AC 250V
Input Voltage(DC Type)
※CustomersuppliedPSUmustmeetrequirements
IEC1010-1 and CE Marking requirements.
Absolute min:
Nominal:
Absolute max:
Ripple maximum allowed:
18V
24V
31V
1V pk-pk
Wattage(DC Type) Max. wattage:
Max. current:
4.32W @+24 VDC
180mA @+24 VDC
Analog output Current
0-20mA(500 ohms max load)
All readings ± 0.2mA
Measured-value signal:
4mA(Zero) to 20mA(Full Scale)
Fault:
0-100% LEL:
100-109%LEL:
Over 110% LEL:
Maintenance:
0mA
4mA - 20mA
21.6mA
20mA - 21.4mA
3mA
Analog output current ripple & noise max ±20uA
Relay contact Alarm1, Alarm2, Alarm3, Fault Relay
AC250V 5A Relay contact(SPDT)
Wiring requirement
Power CVVS or CVVSB with shield
Analog CVVS or CVVSB with shield
RS485 STP(Shielded Twisted Pair)
Cable Connection Length Analog 2500m
RS485 1000m
EMC Protection:
3.4. Environmental Specifications
ITEMS SPECIFICATION
Operation Temperature -20to60℃
Storage Temperature -20to60℃
Operation Humidity 0~ 99% RH (Non-condensing)
Pressure Range 90 to 110 kPa
3. Specications 4. Name and Description of Each Part

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10_11
GTC-542
Instruction Manual 4. Name and Description of Each Part4. Name and Description of Each Part
No ITEMS SPECIFICATION
1Case cover It is made of ABS Material. It fixes the display and protects the circuit from surrounding
environment and external shock.
2Case Body It is made of ABS Material. It fixes the Main PCB and protects the circuit from surrounding
environment and external shock.
3Warning Light Upon an event of error, the warning light turns on.
4Mount hole(2-Ø6.5) It is a hole to fix the control unit to an external wall or other mount plate.
5Terminal Block Cover Protective cover for terminal block that supplies power and signal to the product.
6O-Ring < NBR> Fixes the warning light.
7Network LED Flickers during RS-485 network.
8Stand-by LED When the detector is in stand-by mode, STD-BY LED blinks.
9Fault LED Upon an event of trouble in receiver unit and detector part, the trouble LED lights on.
10 Alarm 3 LED When the tertiary alarm occurs, Alarm 3 LED lights on.
When it reaches Alarm 3 threshold during a test, Alarm 3 LED lights on.
11 Alarm 2 LED When the secondary alarm occurs, Alarm 2 LED lights on.
When it reaches Alarm 2 threshold during a test, Alarm 2 LED lights on.
12 Alarm 1 LED When the primary alarm occurs, Alarm 1 LED lights on.
When it reaches Alarm 1 threshold during a test, Alarm 1 LED lights on.
13 FUNC key "FUNC"KEYisakeytochangetoselectandenterdataforalarmthreshold,alarmtype,alarm
dead band, and alarm dwell time settings, etc.
14 UP(▲)key
Afterselectingeachmodeusing"FUNC"KEY,itisusedtoincreasethesetvalueortoselectthe
nextsetting.Whenavalueneedstobechangesinalargerange,pressing"▲"KEYforacertain
time changes the value rapidly.
15 DOWN(▼(Test))KEY
(Stand-by)
Afterselectingeachmodeusing"FUNC"KEY,itisusedtodecreasethesetvalueortoselectthe
previoussetting.Whenavalueneedstobechangesinalargerange,pressing"(▼(Test))KEY"for
a certain time changes the value rapidly.
16 Return Key Performs functions to release alarm, self-test, and program setting, etc.
17 Buzzer Stop Key Used to stop the buzzer upon an event of an alarm
18 Test Key
Pressing"TEST"keyentersamodethatperformsself-test.
MeasurementFNDflickersandthevaluecanbeadjustedusing"TEST"keytocheckthealarm
operation status.
Toreleaseself-test,press"RESET"KEY.
No ITEMS SPECIFICATION
19 Spare Power Test Key Used for checking battery. Upon input, spare power voltage is displayed on Battery FND.
20 LCD PCB Assy Used for displaying measurement from the detector or internal status of the device.
During test, it displays user defined value with flickering.
21 Power FND Used to display the power status and spare power status of the device currently being used.
22 Main Power LED Displays external power status supplied to the device. Lights on when the external power is
normal.
23 Spare power LED Displays external spare power status supplied to the device. Lights on when the external spare
power is normal.
24 Spare Power Normal LED Lights on when it is normal during spare power test.
25 Spare Power Fault LED Lights on when it is in fault status during spare power test.
26 Buzzer Operates in a continuous tone upon an event of warning or fault during a test.
27 SMPS Converter that converts 220V-AC to 24V-DC power. Removed when the option is DC power.
28 RS-485 module(Option) RS-485 network module is isolated type that connects PC and other external network devices to
receive and transmit the current concentration and settings, etc.
29 Fuse Works as a breaker to protect the equipment by cutting fuse with heat generated from
overcurrent.
30 Power ON/OFF Switch S/W used to turn ON and OFF of the control unit power. When performing cable wiring work,
power must be turned OFF.
31 Power Input Terminal Terminal (CN7) is for connecting power cable.
32 External Warning Light
Power Terminal Terminal (CN9) is for an Assistance power terminal for external warning light installation.
33 Signal output terminal Terminal (CN5) is used for Relay Dry Contract Signal such as warning, failure, etc. and connecting
Switch Signal Output Cable, etc.
34 Signal I/O terminal Terminal (CN6) is used for connecting cables for power supply of gas leak detector, 4~20 mA
current output, and RS-485 MODBUS Network, etc.
[Table 1. GTC-542 Configuration Description]

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5. Installation5. Installation
GTC-542
Instruction Manual
[Figure 2. GTC-542 Power Configuration]
■Itisprohibitedforanindividual,otherthananapproveduseroratechnicianresponsibleforinstallationandrepair
from the head office, to install a gas leak detector on site or open the cover of the installed gas leak detector and
manipulate it. This may cause serious loss of life and property from fire, explosion, and etc. In addition, please
check whether there is any remaining explosive gas or combustible material in the surroundings. Power must be
turned off before performing work.
5.1. Power Configuration
■WhenitisdesiredtouseDC24V,aseparaterequestmustbemadewhenorderingtheproduct.Whentheproduct
has been delivered as DC24V-Type upon a customer request, (+) and (-) of DC24V shall be connected to L1 and
L2 or CN9, respectively.
■Afterdetachingtheequipmentcover,terminalblockthatconnectspowerandvarioussignalswithinPCBappears.
■ConnectACPower(85~260V50/60Hz)toCN9asshowninthefigurebelow.
[Figure 3. CN6 Terminal Configuration]
5.2. Signal Terminal Configuration
■UsingCN6terminal,connect4~20mAoutput,ExternalReset,RS485,andexternalgasdetector.Terminal 
configuration is as shown in the table below.
■RS-485cableusesacabledesignatedforRS-485andcablesfor4~20mAoutputanddetectorconnectionmust
use a shield cable with CVVS or CVVSB 0.75 sq and higher.
[Table 2. CN6 Terminal Description]
Note 1) When RS485 Option does not exist, RS485 function does not operate.
FUNCTION TERMINAL NAME DESCRIPTION
4-20mA
Output
VISO External power input terminal for 4~20 mA Sink Driver
mA Output terminal for 4~20 mA Source Driver
SENSOR
Combustible Sensor Toxic Sensor O2 Sensor
(Galvanic Method)
1Red Cable Blue Cable N.C
2White Cable Red Cable Red Cable
RESET +External Reset S/W + Terminal. When + and - terminals short, alarm reset function
operates.
-External Reset S/W - Terminal
RS485 ARS485 A Terminal (TRXD+ or P)
BRS485 B Terminal (TRXD+ or N)

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GTC-542
Instruction Manual 5. Installation5. Installation
[Figure 4. CN5 Terminal Configuration]
[Figure 5. 3-Wire type gas detector]
[Figure 6. 2-Wire type gas detector]
5.3. Relay Terminal Configuration
■UsingCN5terminal,itconsistsof3SPDT-typeAlarmrelayand1SPDT-typeTroublerelay.
■AlarmLamp(LP)canconnectDCexternalwarninglight.
■LPterminaloutputDC+24VpowerregardlessofAC,DCpowermode.ThisistouseanexternalDCflashlightor
external devices.
5.4. 3-wire Type Gas detector Connection Method
5.5. 2-wire type Gas detector Connection Method
■Whenthegasdetectorhas3-wire(V+,mA,V-)forpowerand
420 mA output components, connect to the Channel Unit as
shown in Figure 5.
■ConnectingcablemustcompriseofCVVSorshieldcablewith
CVVSB 0.7 sq or higher.
■OurgasdetectormodelsinthistypeareTS-1100Ex,TS-
2000Ex, TS-2100 Series, TS-4000 Series, TS-4100P Series,
TS-5100 Series, GTD-1000 Series, GTD-2000 Series, GTD-
3000 Series, GIR-3000 Series.
■Whenthegasdetectoroutputhas2-wire(V+,V-),connect
to the Channel Unit as shown in Figure 6.
■ConnectingcablemustcompriseofCVVSorshieldcablewith
CVVSB 0.7 sq or higher.
■OurgasdetectormodelsinthistypeareTS-1100Tx,TS-
2000Tx, TS- 3000 Series, TS-3100 Series.
FUNCTION PIN TERMINAL NAME DESCRIPTION
Alarm1 1 A Alarm1 Normal Open
2 B Alarm1 Normal Closed
Alarm2 3 A Alarm2 Normal Open
4 B Alarm2 Normal Closed
Alarm3 5 A Alarm3 Normal Open
6 B Alarm3 Normal Closed
Trouble 7 A Trouble Normal Open
8 B Trouble Normal Closed
LP 9 + External Power (DC 24 V) + Output
10 -External Power (DC 24 V) - Output
[Table 3. CN5 Terminal Description]

6.2. Power Display
- After GTC-542 power turns ON, the current firm ware version is displayed.
- It displays 24.0 before completion of self test and outputs inputted voltage after the completion.
-When"BATTERYTEST"keyispressedwithexternalpowerapplied,itoutputssparebattery
- voltage.
- When it operates on spare battery, main power LED turns off and power LED lights on.
- When the spare battery is connected properly and there is no problem in charging and usage,
- BAT.GOOD LED lights on.
- When the spare battery is detached, battery key (internal switch) is off, or it is completely
- discharged, BAT. GOOD LED turns off and BAT.TROUBLE LED lights on.
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■Pressing"TEST"S/Wfor2secorlongeringasconcentrationdsiplaymodeentersTestmode.
■Intestmode,whenitpasses30minafterthelastS/Wcontrol,itautomaticallyreturnstothegasconcentration
display mode
6.4. Test Mode
- When it enters Test mode, gas concentration number displays and flickers.
- This function enables testing at channel unit without injecting gas to the detector sensor. It can
- setanarbitraryconcentrationwhentheuserpresses"Test"S/Wandalarmfunctionoperates
- normally with a user-defined concentration.
-When"FUNC"S/Wispressed2secorlonger,itentersFND/LED/BarLEDTestfunction.
- 3-Color bar graph LED displays green, orange, and red at 0.5 s interval and each function
- LED flickers at 0.5 s interval.
-When"RESET"S/Wispressed,itreturnstogasconcentrationdisplaymode.
▼▲
Full Range
- After GTC-542 power turns ON, the current firm ware version is displayed.
- VER is displayed for 0.5 sec on FND then number displays.
- The current version is 1.03.
-Afterwarming-upby"SELF"flashingforapprox.30seconFNDofconcentrationdisplay,
- it immediately enters the measurement mode.
- Upon an event of fault of the equipment or detector at this time, fault alarm appears.
▼
X.XX
- Displays gas concentration received by the detector on FND digital display in numbers.
- Gas concentration is also displayed by 3-color bar graphic LED. Concentrations below the
- primary alarm concentration in green, below the secondary alarm concentration in orange,
- and above the secondary alarm concentration in red.
- 3-level alarm thresholds are always displayed by 3-color bar graphic LED. Alarm1 threshold
- in green, Alarm2 threshold in orange, and alarm3 threshold in red.
- When the detector is not connected or input current from the detector is under 10% below the
- sethighscalevalue,"Undr"displaysandflashesat1secinterval
- Trouble LED lights on, warning light flashes, and buzzer sounds
- When buzzer stop key is pressed, the warning light turns on and the buzzer stops.
-Whentheinputcurrentfromthedetectorisover10%abovethesethighscalevalue,"ovE"
- displays and flashes at 1 sec interval.
- Alarm 1, 2, 3 LED lights flickers, warning light flickers, and buzzer sounds.
- Top circular LED of the 3-Color bar graphic LED lights on red.
- When gas concentration is detected to be above the set value for alarm, alarm function counts
- the dwell time and if it is above the set dwell time, alarm function operates.
- Alarm relay turns on when it is above the alarm dwell time.
-Whenalarmlatchtypeis"ON",uponoperationofalarmfunction,alarmstatusandgas
- concentration value are maintained at the max. value. It does not get release when the gas
- concentrationisdecreasedbelowthealarmthresholdand"RESET"keymustbeusedtoreleaseit.
- When Alarm Latch Type is OFF, Alarm is released automatically in accordance to gas
- concentration.
6. Operation Method6. Operation Method
■Checkwiringsforoperationpower,detectionparts,alarmparts,andconcentrationdisplay.
■CheckthepowerinputthenturnONthepowerS/W.
■CheckwhetherpowerLEDatalarmandconcentrationdisplaypartslighton.
■Checkwhether"SELF"isdisplayedonFNDconcentrationdisplaypart.
6.1. Power ON
■Afterpoweron,whenthereisnoerrorfrom"SELFTEST",itautomaticallyentersMeasuringMode.
6.3. Measuring Mode

LEVEL1 LEVEL2 PARAMETER DEFAULT
(2H 00) 0~99 00
(Alarm 2 Time Delay) 0~60 1
(Alarm 2 Relay) ON, OFF ON
(Alarm 2 Blink) ON, OFF OFF
(Alarm-3) 1~Full range 50%/F.R.
(3H) H, L H
(3H 00) 0~99 00
(Alarm 3 Time Delay) 0~60 1
(Alarm 3 Relay) ON, OFF ON
(Alarm 3 Blink) ON, OFF OFF
(End) - -
(Maintenance-Level) 0 ~ Full range 0
(Under) ON / OFF OFF
(Engineering) ON / OFF OFF
(Zero-Skip) 0 ~ 20.0% 0
(Span-Skip) 0 ~ 20.0% 0
(Emergency-Timeout) ON / OFF OFF
(Outout Delay Time) 0 ~ 60 0
(Outout Delay Value) 0 ~ 20 0
(End) - -
(Trouble Relay) ON / OFF OFF
(Alarm Relay) ON / OFF OFF
(mA out) ON / OFF OFF
or (0 or 100) 0 or 100 (Flickering) When ON, starts from 100
When OFF, starts from 0
(Channel number) 0~128 1
(Parity Bit) 0~2 1
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[Table 4. Mode Setting Table]
485 MODE
Test MODE
Option MODE
ALARM MODE
■Pressing"DOWN"S/Wfor2secorlongeringasconcentrationdisplaymodeentersStand-bymode.
■WhenETO(EmergencyTimeOut)issettoONinOptionSettingMode,itautomaticallyreturnstogas
concentration display mode after 30 min.
■WhenETOisOFF,"DOWN(Stand-by)"S/Wmustbepressed2secorlongertoreturntogasconcentration
display mode.
6.5. Stand-by Mode
6.6. Operation Setting
6.6.1. Setting Table
LEVEL1 LEVEL2 PARAMETER DEFAULT
(Gas Funtion) TY1, Ty2, TY3, TY4 TY1
(Decimal-Point) 100, 1.00, 10.0, 0.100 100
(High-Scale) 10~9999 100
-99 ~ 99 0
(Pass Word) 0~99 00
(Out-Set) ON, OFF OFF
(End) - -
(LACH) ON, OFF ON
(Energizer) ON, OFF OFF
(Alarm Lamp) ON, OFF ON
(Alarm-1) 1~Full range 20%/F.R.
(1H) H, L H
(1H 00) 0~99 00
(Alarm 1 Time Delay) 0~60 1
(Alarm 1 Relay) ON, OFF ON
(Alarm 1 Blink) ON, OFF OFF
(Alarm-2) 1~Full range 40%/F.R.
(2H) H, L H
PROGRAM MODE
ALARM MODE
- In stand-by mode, STD-BY LED flickers. Trouble/Alarm relay of GTC-542 contact output
- does not operate but all other functions run.
-When"DOWN(Stand-by)"KEYispressed2secorlonger,itreturnstogasconcentration
- display mode
6. Operation Method6. Operation Method

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6.6.2. PROGRAM MODE
- Decimal point is used when it is necessary to change decimal point for measured range.
- Decimalpointpositionissetbypressing"▲"KEYor"▼(Test)"KEYwhereitchangesasshown
- on the left. (Default 100)
- Ex)100, 10.0, 1.00
-Whenadesireddecimalplaceisdisplayed,press"FUNC"KEYtosetthedecimalplaceand
- enter the next item.
-When"RESET"KEYispressed,itreturnsProgramMode.
- It is High scale setting mode, which sets the max. gas concentration to be displayed.
- High scale value is set in accordance to the domestic regulations as factory setting.
-When"FUNC"KEYispressed,itentershighscalesettingmode.
-When"RESET"KEYispressed,itreturnsProgramMode.
- High scale changes a set value according to measuring range. Scale value increases or
- decreasesuponpressing"▲"KEYor"▼(Test)"KEY,respectively.(Default100)
-Whenadesiredhighscaleisdisplayed,press"FUNC"KEYtosetitandenterthenextitem.
-When"RESET"KEYispressed,itreturnsProgramMode.
- This setting mode is configured with the same measuring range as gas detector when
- delivered. Ex.) When range is set to 100.
- For 4 mA/DC output ... 0 Display For 20 mA/DC output ... 100 Display
- SAD setting mode to correct measurement error occurring from the detector.
-Pressing"FUNC"KEYentersSADvaluesettingfunction.
-When"RESET"KEYispressed,itreturnsProgramMode.
-When"FUNC"S/Wispressed,itentersProgramMode.
-When"RESET"S/Wispressed,itreturnstogasconcentrationdisplaymode.
- It is decimal position setting mode, which is the first function in program data setting mode.
-When"FUNC"S/Wispressed,itentersdecimalsettingmode.
-When"RESET"S/Wispressed,itreturnstoProgramMode.
- For each TY selection, High-Scale, d-PS, Alarm (1, 2, 3), Alarm direction, Stand-by mode
- output, Sensor output characteristic direction, Temperature compensation functions change
- accordingly.
-Decimalpointpositionissetbypressing"▲"KEYor"▼(Test)"KEYwhereitchangesasshown
- on the left. (Default TY1)
- Value that changes upon TY1 selection (Ex. Tx)
- Decimal position setting -> Default 0, Max. gas concentration display possible -> Default 100
- Alarm threshold 1 -> 20 H, 2 -> 40 H, 3 -> 50 H
- Stand-by output -> Default 0, Sensor output characteristic direction -> Default dec
- Temperature compensation function -> Default OFF
- Value that changes upon TY2 selection (Membrapor O2)
- Decimal position setting -> 1 (25.0) Max. gas concentration display possible -> 250
- Alarm threshold 1 -> 18.0 L, 2 -> 15.0 L, 3 -> 23.0 H
- Stand-by output -> Default 20.9, Sensor output characteristic direction -> Default inc
- Temperature compensation function -> Default ON
- TY3 and TY4 are back up and not used currently.
-WhenadesiredTYisdisplayed,press"FUNC"KEYtosetTYandenterthenextitem.
-When"RESET"KEYispressed,itreturnsProgramMode.
- It is decimal position setting mode, which is the first function in program data setting mode.
-When"FUNC"KEYispressed,itentersdecimalsettingmode.
-When"RESET"KEYispressed,itreturnstoProgramMode.
▼▲
▼▲
▼▲
▼▲
■Aftersettingpassword,press"▲"KEYor"▼(Test)"KEYtomovethenpress"FUNC"KEYtoenter.
■Inprogramsettingmode,whenitpasses10secafterthelastKEYcontrol,itautomaticallyreturnstogas
concentration display mode.
6. Operation Method6. Operation Method

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-FunctiontosetSADvalue.SADvalueincreaseordecreaseswhen"▲"KEYor"▼(Test)"KEYis
- pressed,respectively.Fornegativevalue,"-"signdisplaysabovethefirstdigit.(Default0)
-WhenaSADvalueisdisplayed,press"FUNC"KEYtosetandenterthenextitem.
-When"RESET"KEYispressed,itreturnsProgramMode.
- (Ex.) When output error at detector is -2, the actual display should be -2, but SAD set value of
- 2 is corrected and 0 is displayed.
- Password setting function.
-When"FUNC"S/Wispressed,itentersPasswordsettingmode.
-When"RESET"S/Wispressed,itreturnstoProgramMode.
-Passwordvalueincreasesordecreaseswhen"UP"S/Wor"DOWN"S/Wispressed,
- respectively. (Default P00)
-Whenadesiredpasswordno.isdisplayed,press"FUNC"S/Wtosetitandenterthenextitem.
-When"RESET"S/Wispressed,itreturnstoProgramMode.
- It is used when two or more receiver are used.
- When receiver 2 receives mA output from receiver 1, mA for each function entered to receiver
- 2 instead of the actual gas value when entering function and test modes. This function is to
- prevent the alarm operation coming from this.
-When"FUNC"KEYispressed,itentersOut-Setsettingmode.
-When"RESET"KEYispressed,itreturnsProgramMode.
-"ON"and"OFF"modechangesbypressing"▲"KEYor"▼(Test)"KEY.(DefaultOFF)
-When"ON",thecurrentgasvalueiscalculatedandoutputtedinmA.Evenwhenitissetto
- each mode or test mode, it displays gas value that is not a defined mA.
-When"OFF",asthesameastheexistingsetting,itdisplaysthecurrentgasvalueingas
- concentration display mode and defined mA when entering each mode.
-Whenadesiredo-sfunctionisdisplayed,press"FUNC"KEYtosetpasswordno.andenter
- the next item.
-When"RESET"KEYispressed,itreturnsProgramMode.
▼▲
▼▲
-Amessageindicatingcompletionofsettingisdisplayedas"End"for2secthenitreturnstogas
- concentration display status.
6.6.3. ALARM Mode
■Aftersettingapassword,moveto"UP"S/Wor"DOWN"S/Wthenpress"FUNC"S/Wtoenterthemode.
■InAlarmsettingfunction,whenitpasses10secafterthelastS/Wcontrol,itautomaticallyreturnstogas
concentration display mode.
- It can designated threshold for Alarm1, Alarm2, and Alarm3.
-When"FUNC"S/Wispressed,itentersAlarmsettingmode.
-When"RESET"S/Wispressed,itreturnstogasconcentrationdisplaymode.
- It is a mode that sets Alarm Latch Type.
-When"FUNC"S/Wispressed,itentersAlarmLatchTypesettingmode.
-When"RESET"S/Wispressed,itreturnstoAlarmSettingMode.
-Itisamodetochangealarmresettypeand"ON"and"OFF"modechangeswhen"UP"or
- "DOWN"S/Warepressed.
-Whenadesiredalarmlatchtypeisdisplayed,press"FUNC"S/Wtosetitandenterthenextitem.
-When"RESET"S/Wispressed,itreturnstoAlarmSettingMode.
-AlarmLatchTypehastwomodes;"ON"and"OFF"."OFF"modeautomaticallyresetsalarm.
-When"ON",theusermustpress"RESET"S/Wtoreleaseandresetthealarm.
- It is a function that sets Energizer Modes for Alarm Relay and Fault Relay.
-When"FUNC"S/Wispressed,itentersEnergizerModesettingfunction.
-When"RESET"S/Wispressed,itreturnstoAlarmSettingMode.
6. Operation Method6. Operation Method

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-EnergizermodedecidesON/OFFusing"▲"KEYor"▼(Test)"KEY.
- When ON, it is in Normal Open (NO) status.
- When OFF, it is in Normal Close (NC) status.
-Whenadesiredenergizermodeisdisplayed,press"FUNC"KEYtosetitandenterthenextitem.
-When"RESET"KEYispressed,itreturnstoSettingMode.
- Mode that sets external warning lights to operate with a desired alarm.
-When"FUNC"KEYispressed,itentersalarmlampsettingmode.
-When"RESET"KEYispressed,itreturnsSettingMode.
-Using"▲"KEYor"▼(Test)"KEYtodisplayadesiredalarm,thenpress"FUNC"keytosetit.
- Bydefault,itissetat"ON”.
- When Alarm goes off when Alarm Lamp is ON, warning light lights on. When it is OFF, warning
- light is off.
-WhenaALPvalueisdisplayed,press"FUNC"KEYtosetandenterthenextitem.
-When"RESET"KEYispressed,itreturnsSettingMode.
-Alarm1thresholdsettingfunctionmessageisdisplayedas"AL-1”
-When"FUNC"KEYispressed,itentersAlarm1thresholdsettingmode.
-When"RESET"KEYispressed,itreturnsSettingMode.
- Function to change Alarm 1 threshold setting. Max. allowable is high scale value.
-Pressing"▲"KEYor"▼(Test)"KEYincreasesordecreasesAlarm1value,respectively.
-Whenadesiredalarm1thresholdisdisplayed,press"FUNC"KEYtosetitandenterthenextitem.
-When"RESET"KEYispressed,itreturnsSettingMode.
- (Default: Alarm1 = 20(F/S 20%), Alarm2 = 40(F/S 40%), Alarm3 = 50(F/S 50%))
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Full Range
- Alarm level is set to the concentration outlined in domestic regulations as factory setting.
-ItisamodetosetadirectionofAlarm1operation.Pressing"UP"S/Wor"DOWN"S/Wdisplays
- "H"or"L",respectively.
-"H"modeoperateswhengasvalueisequalorgreaterthanAlarm1settingvalue."L"mode
- operates when gas value is equal or less than Alarm1 set value.
-Whenadesiredmodeisdisplayed,press"FUNC"S/Wtosetitandenterthenextitem.
-When"RESET"S/Wispressed,itreturnstoAlarmSettingMode.
-ItisamodetosetadeadbandforAlarm1operation.Pressing"UP"S/Wor"DOWN"S/W
- increases or decrease the value, respectively. (Default 0)
-WhenAlarm1isin"H"mode,Alarm1operatesatvaluesabovethesumofAlarmanddead
- band values and releases below the sum.
-WhenAlarm1isin"L"mode,Alarm1operationbelowdifferenceofAlarmanddeadband
- values and releases above the difference
-WhenadesiredAlarm1deadbandvalueisdisplayed,press"FUNC"S/Wtosetitandenterthe
- next item.
-When"RESET"S/Wispressed,itreturnstoAlarmSettingMode.
- It is a mode to set Alarm1 dwell time.
- It is a function to prevent instantaneous malfunction of detector due to external shock and noise
- other than from normal operation.
-Press"FUNC"S/WtoenterAlarm1delaytimesettingfunction.
-When"RESET"S/Wispressed,itreturnstoAlarmSettingMode.
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-TochangeAlarm1delaytime,pressing"UP"S/Wor"DOWN"S/Wincreasesordecreasesthe
- time in unit of seconds (Default 1)
- Ex.) Alarm Threshold Value: 20%LEL/delay Time: When it is at 5 sec, Alarm triggers when
- the measured value is above the set value based on 20%LEL for 5 sec or longer. When it goes
- down below the set value within 5 sec, alarm is not triggered.
-WhenadesiredAlarm1delaytimeisdisplayed,press"FUNC"S/Wtosetitandenterthenextitem.
-When"RESET"S/Wispressed,itreturnstoAlarmSettingMode.
- It is a mode to set Alarm1 contact output.
-Press"FUNC"S/WtoenterAlarm1contactoutputsettingfunction.
-When"RESET"S/Wispressed,itreturnstoAlarmSettingMode.
-ItisamodetochangeAlarm1contactoutputand"ON"and"OFF"modechangeswhen"ON"or
- "OFF"S/Warepressed.
-Alarm1contactoutputmodehastwomodes;"ON"and"OFF".InOFFmode,Alarm1contact
- output does not run. In ON mode, it runs.
-WhenadesiredAlarm1contactoutputmodeisdisplayed,press"FUNC"S/Wtosetitandenter
- the next item.
-When"RESET"S/Wispressed,itreturnstoAlarmSettingMode.
- Alarm 1 blink output setting function that sets Alarm1 contact output to go ON/OFF at 1 sec
- interval during buzzer operation.
-Press"FUNC"S/WtoenterAlarm1blinkoutputsettingfunction.
-When"RESET"S/Wispressed,itreturnstoAlarmSettingMode.
-ItisamodetochangeAlarm1blinkoutputand"ON"and"OFF"modechangeswhen"ON"or
- "OFF"S/Warepressed.
-Alarm1blinkoutputmodehastwomodes;"ON"and"OFF".InOFFmode,Alarm1blinkoutput
- does not run. In ON mode, it runs. (However, it runs when Alarm1 contact output mode is ON.)
-WhenadesiredAlarm1blinkoutputmodeisdisplayed,press"FUNC"S/Wtosetitandenter
- the next item.
-When"RESET"S/Wispressed,itreturnstoAlarmSettingMode.
▼▲
-Amessageindicatingcompletionofsettingisdisplayedas"End"for2secthenitreturnstogas
- concentration display status.
* Alarm 2 and Alarm 3 setting modes are the same as Alarm 1.
6.6.4. Option Mode (Option setting)
■Aftersettingapassword,moveto"UP"S/Wor"DOWN"S/Wthenpress"FUNC"S/Wtoenterthemode.
■InOptionsettingmode,whenitpasses10secafterthelastS/Wcontrol,itautomaticallyreturnstogas
concentration display mode.
■Inoptionmode,mostsettingsarefactorypreset,therefore,thisfunctionshouldnotbeadjusted.
When it is unavoidable, the user must seek help from GasTron to adjust.
- It is a mode to set Option function.
-When"FUNC"S/Wispressed,itentersOptionsettingmode.
-When"RESET"S/Wispressed,itreturnstogasconcentrationdisplaymode.
- It is a mode to set FND display and output value when it is in Stand-by Mode.
-Press"FUNC"S/Wtoentern-Lsettingfunction.
-When"RESET"S/Wispressed,itentersOptionSettingMode.
-Bypressing"UP"S/Wand"DOWN"S/W,itcanbesetinfullrange.
- (Default: 0 Oxygen : 20.9(Ex., Setting 0 : 4mA, Full Range : 20mA))
-Whenadesiredn-Lvalueisdisplayed,press"FUNC"S/Wtosetitandenterthenextitem.
-When"RESET"S/Wispressed,itentersOptionSettingMode.
- Item to set whether to use a function that displays Undr on FND when a negative value is below
-10%.
-When"FUNC"S/Wispressed,itentersUndersettingmode.
-When"RESET"S/Wispressed,itentersOptionSettingMode.
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-Bypressing"UP"S/Wor"DOWN"S/W,ON/OFFstatuscanbesetandwhenitisON,UNDER
- function is available for use. (Default OFF)
-Whenadesireditemisdisplayed,press"FUNC"S/Wtosetitandenterthenextitem.
-When"RESET"S/Wispressed,itentersOptionSettingMode.
- For measurement display, it displays raw data from -XXXX ~ +YYYY.
-When"FUNC"S/Wispressed,itenters"Engineer"settingmode.
-When"RESET"S/Wispressed,itentersOptionSettingMode.
- (This mode is only used as test mode and is not used in the actual field.)
-Bypressing"UP"S/Wor"DOWN"S/W,ON/OFFstatuscanbesetandwhenitisON,
- the function is available for use. (Default OFF)
-Whenadesireditemisdisplayed,press"FUNC"S/Wtosetitandenterthenextitem.
-When"RESET"S/Wispressed,itentersOptionSettingMode.
- Item for zero skip setting.
- It zero skips the value designated for high scale setting range.
-When"FUNC"KEYispressed,itentersZ-Ssettingmode.
-When"RESET"KEYispressed,itreturnstoOptionSettingMode.
-Itcansetin0~20(%)rangeusing"▲"KEYor"▼(Test)"KEY.
-Whenadesiredvalueisdisplayed,press"FUNC"KEYtosetandenterthenextitem.
-When"FUNC"KEYispressed,itentersOptionSettingMode.
- Item for span skip setting.
- It span skips the value designated for high scale setting range.
-When"FUNC"KEYispressed,itentersS-Ssettingmode.
-When"FUNC"KEYispressed,itentersOptionSettingMode.
-Itcansetin0~20(%)rangeusing"▲"KEYor"▼(Test)"KEY.
-Whenadesiredvalueisdisplayed,press"FUNC"KEYtosetandenterthenextitem.
-When"FUNC"KEYispressed,itentersOptionSettingMode.
- It sets Emergency Time Out. In stand-by mode, the user can decide whether to set the time.
-When"FUNC"KEYispressed,itentersEmergencyTimeOutsettingmode.
-When"RESET"KEYispressed,itreturnstoOptionSettingMode.
-Bypressing""▲"KEYor"▼(Test)"KEY,ON/OFFstatuscanbeset.WhenitisON,modetime
- runs for 30 min and when it is OFF, stand-by mode time continuously runs without limit.
- (Default OFF)
-Whenadesireditemisdisplayed,press"FUNC"KEYtosetandenterthenextitem.
-When"RESET"KEYispressed,itreturnstoOptionSettingMode.
- It sets output delay time
- Gas value within time and value applied by operating with output delay value is not displayed.
- When the value exceeds, the measurement is displayed.
-When"FUNC"KEYispressed,itentersOutputDelayTimesettingmode.
-When"FUNC"KEYispressed,itentersOptionSettingMode.
-Itcansetin0~60(sec)rangeusing"▲"KEYor"▼(Test)"KEY.
-Whenadesiredvalueisdisplayed,press"FUNC"KEYtosetandenterthenextitem.
-When"FUNC"KEYispressed,itentersOptionSettingMode.
- ※odtandodvsettingsoperatebyreferencingeachother.
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6. Operation Method6. Operation Method

- Bypressing"▲"KEYor"▼(Test)"KEY,ON/OFFstatuscanbesetandwhenitisON,TestRelay
- function is available for use. (Default OFF)
- Whenadesireditemisdisplayed,press"FUNC"KEYtosetandenterthenextitem.
- When"RESET"KEYispressed,itreturnstoTestSettingMode.
- It is a mode that sets ON/OFF status for Alarm Relay Test Operation.
-When"FUNC"KEYispressed,itentersalarmFUNCsettingmode.
-When"RESET"KEYispressed,itreturnstoTestSettingMode.
-Bypressing"▲"KEYor"▼(Test)"KEY,ON/OFFstatuscanbesetandwhenitisON,TestRelay
- function is available for use. (Default OFF)
-Whenadesireditemisdisplayed,press"FUNC"KEYtosetandenterthenextitem.
-When"RESET"KEYispressed,itreturnstoTestSettingMode.
- It is mA Output Signal Test Mode.
-When"FUNC"KEYispressed,itentersmAoutputsettingmode.
-When"RESET"KEYispressed,itreturnstoTestSettingMode.
-Bypressing"▲"KEYor"▼(Test)"KEY,ON/OFFstatuscanbesetandwhenitisON,TestRelay
- function is available for use. (Default OFF)
-Whenadesireditemisdisplayed,press"FUNC"KEYtosetandenterthenextitem.
-When"RESET"KEYispressed,itreturnstoTestSettingMode.
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- Test mode enables testing without injecting gas to the detector sensor. The user can set an
- arbitraryconcentrationbypressing"▲"KEYor"▼(Test)"KEYandthealarmfunctionoperates
- normally with a user-defined concentration.
- Pressing"FUNC"KEYentersTestsettingfunction.
- When"RESET"KEYispressed,itreturnstogasconcentrationdisplaymode
- It is a mode that sets ON/OFF status for Test Relay Test Operation.
-When"FUNC"KEYispressed,itentersTestRelaysettingmode.
-When"RESET"KEYispressed,itreturnstoTestSettingMode.
6.6.5. Test Mode
■Aftersettingapassword,moveto"UP"S/Wor"DOWN"S/Wthenpress"FUNC"S/Wtoenterthemode.
■ In test mode, when it passes 10 sec after the last S/W control, it automatically returns to gas concentration display mode.
- It sets output delay value.
- Gas value within time and value applied by operating with output delay time is not displayed.
- When the value exceeds, the measurement is displayed.
- When"FUNC"S/Wispressed,itentersOutputDelayvaluesettingmode.
- When"FUNC"KEYispressed,itentersOptionSettingMode.
-Itcansetin0~20(%)rangeusing"▲"KEYor"▼(Test)"KEY.
-Whenadesiredvalueisdisplayed,press"FUNC"KEYtosetandenterthenextitem.
-When"FUNC"KEYispressed,itentersOptionSettingMode.
- odt and odv settings operate by referencing each other.
-Amessageindicatingcompletionofsettingisdisplayedas"End"for2secthenitreturnstogas
- concentration display status.
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- It is a mode that sets 485 function.
- When"FUNC"S/Wispressed,itenters485settingmode.
- When"RESET"S/Wispressed,itreturnstogasconcentrationdisplaymode.
- It is channel Number Setting Function that sets Serial Number of Control Unit.
-Press"FUNC"S/WtoenterChannelnumbersettingfunction.
-When"RESET"S/Wispressed,itreturnsto485Mode.
- Channel number is a mode that enters serial number of control unit to enable recognition of
- operationstatusofeachcontrolunitatotherequipment,suchasPC,etc.Pressing"UP"S/W
- or"DOWN"S/WincreaseordecreasesAddressNo.Value,respectively.(Default1)
-Whenadesiredaddressno.isdisplayed,press"FUNC"S/Wtosetitandenterthenextitem.
-ChannelNoissetat"1"asfactorypresetandisonlyenteredwhennetworkfunctionistobe
- used. When two or more control unit is used, Channel No. shall not overlap.
6.6.6. 485 Setting Mode
■Aftersettingapassword,moveto"UP"S/Wor"DOWN"S/Wthenpress"FUNC"S/Wtoenterthemode.
■ In 485 mode, when it passes 10 s after the last S/W control, it automatically returns to gas concentration display mode.
▼▲
6.6.7. Maintenance Mode
■Pressingboth"RESET"and"TEST"S/Wfor2secorlongeringasconcentrationdisplaymodeenters
Maintenance mode.
■"RESET"S/WmustbepressedinMaintenancemodetoreturntogasconcentrationdisplaymode.
- Mode that selects function to set current input and output values that are reference of Channel
- unit.Pressing"UP"S/Wor"DOWN"S/Wdisplays"In"or"oUt",respectively.
-Whenadesiredmodeisdisplayed,press"FUNC"S/Wtosetitandenterthemode.
-When"In"isselected,modesetscurrentinput.When"oUt"isselected,modesetscurrent
- output.
-When"RESET"S/Wispressed,itreturnstogasconcentrationdisplaymode.
-Itiswhen"In"isselectedandamodethatsetsbyinputting4mAcurrent.
-Press"FUNC"S/Wtoenterfunctionthatdisplayscurrentinputbynumber.
-When"RESET"S/Wispressed,itreturnstogasconcentrationdisplaymode.
-WhenAoutisOFF,itstartsfrom0.FNDvalueischangedby"UP"S/Wor"DOWN"S/WbutmA
- is not outputted. (Default 3mA)
- When Aout is ON, FND value outputs from 100 and output current is 20 mA. It can be changed
- by"UP"S/Wor"DOWN"S/W.
- (FND: 0~100, mA : 4mA~20mA)
-When"FUNC"S/Wispressed,itreturnstoTestModeSettingMode.
- The current test mode is set to output for 1 h after the last KEY operation. After completion of
- test,press"FUNC"KEYor"RESET"KEYtoreturntoTestModeSettingMode.
▼▲
Full Range
▼▲
- Mode that sets Parity Bit, which is a format of 485 communication.
- When"FUNC"KEYispressed,itentersParityBitsettingmode.
- When"RESET"KEYispressed,itreturnstogasconcentrationdisplaymode
- It is a mode that sets ON/OFF status for Test Relay Test Operation.
-When"FUNC"KEYispressed,itentersTestRelaysettingmode.
-When"RESET"KEYispressed,itreturnstoTestSettingMode.
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- When"oUt"isselected,itisamodeafterinputcurrent,whichsets4mAoutputcurrent.
- (Default 4.00)
- Connectammeterto4~20mAoutputterminalandpress"▲"KEYor"▼(Test)"KEYtomatchthe
- valuesonammeterandFNDthenpress"FUNC"KEYtosetoutputcurrentandmovetothenext
- item.
- When"RESET"keyispressed,itreturnstogasconcentrationdisplaymode.
- Mode that sets 20 mA output current. (Default 20.00)
- Due to display limit of FND, 10-digit and decimal point digit flashes in 0.5 sec interval.
-Connectammeterto4~20mAoutputterminalandpress"▲"KEYor"▼(Test)"KEYtomatchthe
- valuesonammeterandFNDthenpress"FUNC"KEYtosetoutputcurrentandmovetothenext
- item.
-When"RESET"keyispressed,itreturnstogasconcentrationdisplaymode.
- It is a mode that tests output current after calibration. (Default 4.0)
-Itcanconfirmarangefor3.0mA-21.0mAwith"▲"KEYor"▼(Test)"KEY.
-Pressing"FUNC"KEYafterconfirmationgoestothenextitem.
-When"RESET"keyispressed,itreturnstogasconcentrationdisplaymode
▼▲
▼▲
▼▲
- It is a mode that displays value converted from processor after inputting 4mA current to (mA)
- terminal.
-Press"FUNC"S/WwhenthedisplayednumberisstabletodisplaySUC(Success)foracurrent
- input within normal range and move to the next item.
- C-F (Calibration-Fail) displays when a current out of range is inputted. After confirming input
- currentafterre-displayofcurrentvaluethenpress"FUNC"S/Wagaintoconfirm.
-When"RESET"S/Wispressed,itreturnstogasconcentrationdisplaymode.
- Mode that sets by inputting 20 mA current.
-Press"FUNC"S/Wtoenterfunctionthatdisplayscurrentinputbynumber.
-When"RESET"S/Wispressed,itreturnstogasconcentrationdisplaymode.
- It is a mode that displays value converted from processor after inputting 20mA current to (mA)
- terminal.
-Press"FUNC"S/WwhenthedisplayednumberisstabletodisplaySUC(Success)foracurrent
- input within normal range and move to the next item.
- C-F (Calibration-Fail) displays when a current out of range is inputted. After confirming input
- currentafterre-displayofcurrentvaluethenpress"FUNC"S/Wagaintoconfirm.
-When"RESET"S/Wispressed,itreturnstogasconcentrationdisplaymode.
▼
OR
▼
OR
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- It is a mode that resets only calibration data from the currently saved data to the original factory
- setting.
- When"RESET"S/Wispressed,itreturnstogasconcentrationdisplaymode.
-Press"FUNC"S/Wtoenter.
-Bypressing"UP"S/Wor"DOWN"S/W,Yes/nostatuscanbeset.Whenitis"Yes",Calibration
- Initializationfunctioncanbeused.(Default"no)
-When"RESET"S/Wispressed,itreturnstogasconcentrationdisplaymode.
-Itisafunctionthatuses"FUNC"S/W,therefore,therearecaseswhereS/Wispressed
- repeatedly.
-Topreventthis,when"FUNC"KEYisusedforYes/no,FNDdisplays"1"->"11"->"111"->"1111"
- from the left in 0.5 sec interval.
-When"YES"isselected,initializationiscompleteanditreturnstogasconcentrationdisplaymode.
-When"no"isselected,itreturnstogasconcentrationdisplaymodewithoutinitialization.
-Selecting"RESET"S/WreturnstogasconcentrationdisplaymodewithoutFNDdisplay.
6.6.9. Calibration Data Initialization Mode
■Bypressing"FUNC"S/W+"DOWN"S/WandturningONpower,itentersthemode.
■CalibrationInitializationonlyresetscalibrationvaluetofactorysetting.
▼
▼▲
6.6.8. Factory Initialization Mode
■Bypressing"FUNC"S/W+"UP"S/W+"DOWN"S/WandturningONpower,itentersthemode.
■Factoryinitialisamodethatresetsthedatatotheoriginalfactorysetting.
■Infactoryinitializationmode,mostsettingsarefactorypreset,therefore,thisfunctionshouldnotbeadjusted.
When it is unavoidable, the user must seek help from GasTron to adjust.
- It is a mode that resets the current saved data to the original factory setting.
- When"RESET"S/Wispressed,itreturnstogasconcentrationdisplaymode.
-Press"FUNC"KEYtoenter.
-Bypressing"▲"KEYor"▼(Test)"KEY,Yes/NostatuscanbesetandwhenitisinTest,Factory
- InitializationFunctioncanbeused.(Default"no)
-When"RESET"keyispressed,itreturnstogasconcentrationdisplaymode
-Itisafunctionthatuses"FUNC"KEY,therefore,therearecaseswhereKEYispressed
- repeatedly.
-Topreventthis,when"FUNC"KEYisusedforYes/no,FNDdisplays"1"->"11"->"111"fromthe
- left in 0.5 sec interval.
-When"YES"isselected,initializationiscompleteanditreturnstogasconcentrationdisplaymode.
-When"no"isselected,itreturnstogasconcentrationdisplaymodewithoutinitialization.
-Selecting"RESET"KEYreturnstogasconcentrationdisplaymodewithoutFNDdisplay.
▼
▼▲
-Amessageindicatingcompletionofsettingisdisplayedas"End"for2secthenitreturnstogas
- concentration display status.
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[Figure 7. GTC-542 Drawing 1]
8.1. Drawing 17.1. MODBUS RS485
7.1.1. Interface setting
7.1.2. MODBUS RS485 Register map
■DataFormat:RTU
■Baudrate:9600bps
■Databits:8bits
■Stopbit:1bits
■Parity:Even
■Fordetails,pleasegotowww.modbus.org
[Table 5. RS485 MODBUS Address Configuration]
TYPE ADDRESS BITS DESCRIPTION
Measured Gas
Concentration 30001 BIT15~0 Gas Measurement (Integer/Decimal point is not considered)
High Scale Setting 30002 BIT15~0 High Scale Setting (Integer/Decimal point is not considered)
Alarm 1 Setting 30003 BIT15~0 Alarm 1 Setting (Integer/Decimal point is not considered)
Alarm 2 Setting 30004 BIT15~0 Alarm 2 Setting (Integer/Decimal point is not considered)
Gas detector
status value 10000
BIT0 Alarm 1 Active Status
BIT1 Alarm 2 Active Status
BIT2 Fault Active Status
BIT3 Maintenance Mode Status
BIT4 Test Mode Status
BIT5 Calibration Mode Status
BIT6 Reserved
BIT7 Toggle Bit (Bit reversal in 2 sec interval)
External Test 3BIT0~7 Gas Detector Test Mode Setting
External Reset 2BIT0~7 Exit Gas Detector Test Mode
8. Drawings and Dimensions7. Interface Conguration