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n GeneralThe GC1000 MarkII process gas chromatograph unit features PC communication, analog hold output, digital I/O, and communication with a supervisory computer. For analog hold output from the GC1000 MarkII, many signal lines should be installed between the field and instrument room.Since the GCCU MarkII can be connected to the GC1000 MarkII via communication and the GCCU MarkII can output various signals, the number of signal lines to be installed can be reduced.The GCCU MarkII (Gas Chromatograph Computing Unit) offers such features as analog hold output, analog serial output, trend output, digital output, digital input, and communication with a supervisory computer.All parameter setting is executed in the GC1000 MarkII and no setting is required at the GCCU MarkII.
nSchematicWiringDiagram
K9635JA
*6*6
Communication converterwith explosion-proof
maintenance feature *3RS-232-C communication *4 Various outputs *7
GCCU MarkII(Gas
ChromatographComputing Unit)
RS-232-C communication *5
GC1000 markII
Field Instrument room
Power-off signal *2(Analyzer internalpressure signal)
Dedicatedcommunication *1
F01.ai
PC *8
*1: 0.5 mm2 or larger 4-pin shielded cable (Phonix terminal type), 1 km or shorter (or 2-pin shielded cable + 2-or-more-pin cable without shield)*2: Two lines*3: An accessory of GC1000 MarkII. The PIN is K9635JB when area class is FM-Y or CSA-Y.*4: 3-m dedicated cable provided*5: D-SUB9P (Female) to D-SUB9P (Female) cross cable (commercial item)*6: JISClassDindependentgrounding(groundingresistanceof100Ωorless)orequivalent*7: Dedicated cable provided*8: GCMT software (option) can be operated on PC
Component identification+ Stream identificationData lower byteRange signal + Data upper byte
Data bytes
Data transmission(interrupt signal)
F03.ai
3 to 4s 3 to 4s
*: For the answerback signal, see “Digital input.”
Note: Theoutputtimingoftheanalysiscompletionsignalistheendofsequence.Analysis completion signal
Sequence end
2s
F03-1.ai
(b)Inputtimingandanswerbackoutputtiming
Calibration,stream change,or range change
Command
Command
1s or longer *21s or longer
2s
Answerback *1F04.ai
*1: Answerback is output for each command when the command is accepted, regardless of command execution.*2: Atleasta1-secondintervalisrequiredbetweenrequests.
43 DET1 FLAME OUT Detector1flameextinguished44 DET2 FLAME OUT Detector2flameextinguished
45 DET1 CURRENT ERR
Detector1(TCD)currentflowingexceeds the rated value.
46 DET2 CURRENT ERR
Detector2(TCD)currentflowingexceeds the rated value.
47 CAR1 PRESS DOWN CAR 1 pressure drop48 CAR2 PRESS DOWN CAR 2 pressure drop51 EPC COM ERR EPC communications error52 CAR1 PRES OVER Carrier 1 pressure too high53 CAR2 PRES OVER Carrier 2 pressure too high54 HYD1 PRES OVER Hydrogen 1 pressure too high55 HYD2 PRES OVER Hydrogen 2 pressure too high56 AIR1 PRES OVER Air 1 pressure too high57 AIR2 PRES OVER Air 2 pressure too high
No. MESSAGE AlarmOverview1 SYS ERR System error2 DATA CS ERR Data checksum error3 DRAM ERR DRAM error4 EXCP ERR Exceptional interruption error5 BUS ERR Bus error6 CARD ID ERR Card ID error7 WDOG TIMER ERR Watchdog timer error8 FPGA ERR FPGA error
9 A/D ERR A/D calibration error in various cards
11 START BUFF ERR Start-to store-chromatogram12 BUFF FULL ERR Chromatogram storage area full13 WRITE DATA ERR EEPROM write error
21 TMP CTL ERRIsothermal oven or programmed-temp. oven cannot control temperature.
22 C-OVEN COM ERR Programmed-temp. oven temp. controller communication error
23 C-OVEN COM OVER Programmed-temp. oven temp. error
24 I-OVEN COM OVER Isothermal oven temp. error25 LSV1 TEMP OVER LSV1 high-temp. error26 LSV2 TEMP OVER LSV2 high-temp. error
27 DET1 TMP OVER Detector 1 (FID, FPD) high-temp. error
Also a level 1 alarm is output when GC1000 MarkII is powered down. Because GCCU MarkII recognizes that GC1000 MarkII has no power if it does not get any data from GC1000 MarkII within 1 min, so this alarm occurs when the com-munication is cut due to wiring problem.Note that no alarm is output when the contact is used as NC.
(b)Systemalarm(Level2)The following GC1000 MarkII alarms are output as Level 2 alarm from GCCU MarkII.
No. MESSAGE AlarmOverview
151 C-OVEN TMP VAR ERR
Programmed-temp. oven temperature deviation error
152 I-OVEN TMP VAR ERR
Isothermal oven temperature deviation error
153 LSV1 TMP VAR ERR LSV1 temperature deviation error
154 LSV1 TMP VAR ERR LSV2 temperature deviation error
155 DET1 TMP VAR ERR Detector 1 (FID, FPD) temperature deviation error
156 DET2 TMP VAR ERR Detector 2 (FID) temperature deviation error
158 OVERRIDE Under override161 C-OVER Calibration out of range162 C-REPT Calibration repetition failure163 C-COEF Invalidcalibrationcoefficient166 CONC OUT Concentration abnormal167 RT OUT Retention time out
No. MESSAGE AlarmOverview168 DEV OUT Invalidcoefficientofvariation169 TAIL OUT Invalidtailingcoefficient
171 CAR1 PR VAR ERR Pressure deviation error in car-rier gas 1
172 CAR2 PR VAR ERR Pressure deviation error in carrier gas 2
173 FUEL1 PR VAR ERR Pressure deviation error in combustion hydrogen 1
174 FUEL2 PR VAR ERR Pressure deviation error in combustion hydrogen 2
175 AIR1 PR VAR ERR Pressure deviation error in auxiliary air 1
176 AIR2 PR VAR ERR Pressure deviation error in auxiliary air 2
None1 to 4 outputs (4 to 20 mA DC)5 to 8 outputs (4 to 20 mA DC)9 to 12 outputs (4 to 20 mA DC)13 to 16 outputs (4 to 20 mA DC)17 to 20 outputs (4 to 20 mA DC)21 to 24 outputs (4 to 20 mA DC)1 to 4 outputs (1 to 5 V DC)5 to 8 outputs (1 to 5 V DC)9 to 12 outputs (1 to 5 V DC)13 to 16 outputs (1 to 5 V DC)17 to 20 outputs (1 to 5 V DC)21 to 24 outputs (1 to 5 V DC)
None1 to 4 outputs (4 to 20 mA DC)5 to 8 outputs (4 to 20 mA DC)9 to 12 outputs (4 to 20 mA DC)13 to 16 outputs (4 to 20 mA DC)17 to 20 outputs (4 to 20 mA DC)21 to 24 outputs (4 to 20 mA DC)1 to 4 outputs (1 to 5 V DC)5 to 8 outputs (1 to 5 V DC)9 to 12 outputs (1 to 5 V DC)13 to 16 outputs (1 to 5 V DC)17 to 20 outputs (1 to 5 V DC)21 to 24 outputs (1 to 5 V DC)
Analog serial output * 01A
••••••••••••••••••••••••••••••••••••••••••••••••
NoneProvided (4 to 20 mA DC)Provided (1 to 5 V DC)
Communication output 0 •••••••••••••••• NoneDigital output * 0
12
••••••••••••••••••••••••••••••••••••••••••••••••
Alarm onlyContact input answerback and analysis completion signalBit parallel output
Japanese language, attached software not providedJapanese language, attached software providedEnglish language, attached software not providedEnglish language, attached software provided
Option /MCMP For 2-streams and 150-components
*: If “1 to 6” or “A to F” is selected for trend output, “0” is selected for analog hold output. If “1 to 6” or “A to F” is selected for analog hold output, “0” is selected for trend output. If “1” or “A” is selected for analog serial output, “0” or “1” is selected for digital output. If “2” is selected for digital output, “0” is selected for analog serial output.
JIS Class Dindependent grounding(grounding resistance
of 100Ω or less) or equivalent
LNG
LNG
Powersupply
JIS Class Dindependent grounding(grounding resistance
of 100Ω or less) or equivalent
LNG
JIS Class Dindependent grounding(grounding resistance of 100Ω or less) or equivalent
Connected to the PC. F05.ai
Powersupply
Note
CN1 to CN3 are D-sub 25-pin female connectors and CN4 to CN11 are D-sub 9-pin male connectors. Dedicated cables are attached for CN1 to CN9 and CN11. Dedicated cables for CN1 to CN9 are connected by using the crimped terminal for M4. The dedicated cable for CN11 is a D-sub 9-pin cross cable. The crimped terminal for M4 are used for the wiring of the power supply.The connections of CN1 to CN11 pins are shown below.
Note: The shield is used for SD in case of 2 core shield cable. 6 core shield cable also can be used.
CN1
1:System alarm (level 1)2:System alarm (level 2)3:Component alarm4:Stream change answerback5:Range change answerback6:CAL command answerback7:Analysis completion signal8:9:Digital common (for No.1 to 8)10:Read signal11: LSB12:13: Stream identification signal14:15: MSB16:17:18:Digital common (for No.10 to 17)19:Computer OFF20:Computer ON21:Computer common22:23:24:25:26:Cable shield
1:CAL command STD12:CAL command STD23:Stream change request4:Range change request5: LSB6:7:8: MSB9:Digital common (for No.1 to 8)10: LSB11:12:13: MSB14: LSB15:16:17: MSB18:Digital common (for No.10 to 17)19:20:21:22:23:24:25:26:Cable shield
CN3
Stream No. code
Component No. code
Component list No. code
CN4toCN9Provided when analog hold output, analog serial output, or trend output is selected. CN4 to CN9 are provided depend-ing on the number of outputs.