Yokogawa GC1000 Mark II Process Gas Chromatograph - Manual (Page 33)

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<Toc> <Ind> <3. Overview >
IM 11B03A03-01E
3.5 External Input and Output Signals
(1)Input
Analog Input
Contact Input
Isolated
4-20mA DC
1-5V DC
4-20mA DC
(with 24 or 28V DC of Power)
*1)
Specification :
5V DC, 20mA DC or more
Input
ON signal: 200
Ω
or less
OFF signal: 100k
Ω
or more
On operation:
NC or NO (selectable)
4
8
Accuracy :
±
0.5%FS (-10 to 50˚C)
Function :
Output of Current value *2)
and Average value *3)
Function :
Alarm from outside
Following command request
Stream sequence assign
Stream (cont.) assign
Stream (1 cycle) assign
Cal (Val) assign
Change of Operation mode
Item Signal level No. Description
T0302.EPS
*1) : 2-wire transmitter
*2) : It means the data which is averaged by every 1 second
after filtered by a constant which the analog data is scanned by every 200msec. It can be output
by DCS communication (Modbus protocol).
*3) : It means the current value which is set time in a cycle time.
(2)Output
T0303.EPS
*1) : Analysis result (concentration, simulated distillation result,
base level, signal level, noise level, Deviation calculation, Liner calculation1-5, Ratio,
Separation coefficient, Calorific value, Density, Compressive factor, Wobbe Index)
Analog
Output
Contact
Output
Air output for
stream valve
Isolated or No-isolated
4-20mA DC
Load: 300
Ω
or less
Specification (relay) :
Voltage: 30V DC
Current: 100mA DC
On operation:
NO or NC (selectable)
Air press : 350kPa
MAX.
36
8
MAX.
8
Analysis result *1)
System alarm1
System alarm2
Component alarm (Conc./RT)
Timing signal
Code signal for stream ID (Max. 5 points)
Binary code signal for 9 to 31 stream
(max.)
Item Signal level No. Description
3rd Edition : Aug. 23. 2006-00