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GTC-550

Instruction Manual

6.4.7. Maintenance 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.

- 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 "UP" S/W or "DOWN" S/W to match the 

values on ammeter and FND then press "FUNC" S/W to set output current and move to the next 

item.

- When "RESET" S/W 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 "UP" S/W or "DOWN" S/W to match the 

values on ammeter and FND then press "FUNC" S/W to set output current and move to the next 

item.

- When "RESET" S/W is pressed, it returns to gas concentration display 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.

- 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.

OR

OR

▼ ▲

6. Operation Method

6. Operation Method

Summary of Contents for GTC-550

Page 1: ...AdvancedIndustry1 ro Bugok dong Gunpo si Gyeonggi do Tel 82 31 490 0800Fax 82 31 490 0801 Yeongnambusinessoffice Plant 55Gonghangap gil85beon gil Gangseogu BusanMetropolitanCity Tel 51 973 8518Fax 51 973 8519 E mail info gastron com www gastron com Read in detail for correct use ...

Page 2: ...ed 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 031 490 0800 Fax 031 490 0801 URL www gastron com e mail info gastron com The product and manual are subject to change without a notice for the product s functional improvement and ease of use F...

Page 3: ...pecifications 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 Test Mode 17 6 3 Stand by Mode 17 6 4...

Page 4: ...e it has an output for an error SPDT contact GTC 550 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 3 inch 3 3 Digit FND Measuring Range Capable to display 00 0 999 Alarm Indicator Visible Indicator 3 Alarm Trouble LED Warning Light Audible Indicator Buzzer Signal 85 dB Al...

Page 5: ...s 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 ...

Page 6: ...e the set value or to select the previous setting When a value needs to be changes in a large range pressing DOWN S W for a certain time changes the value rapidly 16 TEST S W Pressing TEST S W enters a mode that performs self test Measurement FND flickers and the value can be adjusted using UP S W and DOWN S W to check the alarm operation status To release self test press RESET S W 17 RESET S W Pe...

Page 7: ...vely 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 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 ...

Page 8: ...hield 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 highe...

Page 9: ...n operates Alarm relay turns on when it is above the alarm dwell time When Alarm Latch Type is at ON mode and alarm function runs the alarm status and gas concentration value stays at the maximum value When gas concentration decreases below the alarm value alarm does not get released and RESET S W must be ran to release it When Alarm Latch Type is OFF Alarm is released automatically in accordance ...

Page 10: ... 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 0 Alarm 3 Relay ON OFF ON Alarm 3 Blink ON OFF OFF End Table 4 Mode Setting Table PROGRAM MODE ALARM MODE LEVEL1 LEVEL2 LEVEL3 LEVEL4 Range available for Selection DEFAULT FUNC FUNC FUNC FUNC END U P D O W N P A S S W O R D I N P U T U P D O W N Maintenance Level U P D O W N 0 Full ...

Page 11: ...ram setting function when it passes 10 s after the last S W control it automatically returns to gas concentration display 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 gas selection function that can be selected by gas type When FUNC S W is pressed it enters Gas Selection Mode When RESET S W is pressed it returns t...

Page 12: ...ode changes when UP or DOWN S W are pressed When ON the actual gas mA value is displayed in any mode entered When OFF mA corresponding to each mode is outputted as the same as existing setting When a desired out set mode is displayed press FUNC S W to set it and enter the next item When RETURN S W is pressed it returns to Program Mode 6 4 3 ALARM Mode After setting a password move to UP S W or DOW...

Page 13: ...next item When RESET S W is pressed it returns to Alarm Setting Mode Default Alarm1 20 F S 20 Alarm2 40 F S 40 Alarm3 50 F S 50 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...

Page 14: ...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 A...

Page 15: ...ing is displayed as End for 2 sec then it returns to gas concentration display status 6 4 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 Test mode enables testing without injecting gas to the detector sensor The user can set...

Page 16: ...essed it enters Option 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 gas concentration display mode Full Range Channel number is a mode that enters serial number of control unit to enable ...

Page 17: ...ESET 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 se...

Page 18: ...ration 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 UP S W and DOWN S W Pressing FUNC S W after confirmation goes to the next item When RESET S W is pressed it returns to gas concentration display mode A message indicating completion of setting is displayed as End for 2 sec then it returns to gas concentration disp...

Page 19: ...t 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 Fau...

Page 20: ...gure 8 GTC 550 Drawing 2 VERSION CONTENTS DATE 0 0 Initial Revision of Manual 2011 08 25 1 0 Changed Main PCB Layout and Added function 2014 01 15 2 0 Corrected Program Mode Function 2015 04 27 3 0 Changed Font 2016 09 23 9 Revision History 8 Drawings and Dimensions ...

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