YOKOGAWA GX20

General
Specications
GX90XA/GX90XD/GX90YD/
GX90WD/GX90XP/GX90YA
I/O Modules
Yokogawa Electric Corporation
2-9-32, Nakacho, Musashino-shi, Tokyo, 180-8750 Japan
GS 04L53B01-01EN
GS 04L53B01-01EN
©Copyright April 2014
8th Edition May. 19, 2017
 OVERVIEW
I/O modules are connected to the GX/GP, Expandable
I/O unit, GM main unit, and GM sub unit.
● Amoduletypeisseventypes,ananaloginput,a
analog output, a digital input, a digital output, a
digital input/output and a pluse input PID control*.
* For the GX90UT PID Control Module, please
see GX90UT PID Control Module General
Specications(GS04L53B01-31EN.)
● Inputandoutputhavemodulestructureanditcan
extendthemeasily.
● TheGX90XAanaloginputmoduleprovides
fourtypes:(1)universaltypethatallowsthe
measurementinputforDCV(directvoltage),TC
(thermocouple),RTD(resistancetemperature
detector),andDI(contactorTTLlevelvoltage),(2)
current input type with the built-in shunt resistor to
directlyinputastandardsignalof4-20mADC,(3)
electromagneticrelayscannertypeinsusceptibleto
noisesthatallowsthemeasurementinputforDCV,
TC,andDI,and(4)lowwithstandvoltagerelaytype
that offers a low cost.
The GX90XA-04-H0 high-speed analog input
modulecanmeasureDCV(DCvoltage),TC
(thermocouple),RTD(resistancetemperature
detector),DI(contactorTTLlevelvoltage)inputsat
theshortestintervalof1ms.IthasanA/Dconverter
foreachinputchannelandemploysascannerless
method,whichislesssusceptibletohighfrequency
noise.
 TheGX90XA-06-R14-wireRTD/resistanceinput
modulecanreceiveinputfrom4-wireRTDsor
4-wire resistors.
 Ineachsystem,ameasurementinputsignalcanbe
assigned to each channel.
● TheGX90YAanalogoutputmoduleiscapableof
retransmissionoutputofvarioustypesofchannels
andalsomanualoutput.Itprovidescurrentoutput
with channels that are isolated.
● TheGX90XDdigitalinputmodule,whichallowsup
to 16 digital inputs or pulse inputs, can be used as
amultipointdigitalinputorpluseinput.Thismodule
canalsobeusedasaremotecontrolinput.
● TheGX90YDdigitaloutputmoduleisassignedasa
relayoutput(contactC)andisusedwhenanalarm
activates.Itcanalsobeusedtoturntheoutputon
andoffmanuallyusingthetouchpanel.
● TheGX90WDdigitalinput/outputmoduleprovides
eight digital inputs or pulse inputs and six relay
outputs.Whentherearesmallamountsofdigital
inputs and digital outputs, you do not need to
mounttwomodules.Thisenablesefcientchannel
conguration.
● GX90XPpulseinputmodulecanreceiveupto10
pulseinputs.Themaximuminputfrequencyis20
kHz.Themodulecanbeusedtointegratepulse
signalsfromowmetersorthelike.*
*Integrationrequiresthemathfunction(/MToption).
● EachmoduleprovidesaM3screwterminaland
clampterminal*.Also,theinputterminalcanbe
removedandmounted.Thisenableswiringworkto
becarriedoutefciently.
* GX90YD and GX90WD are only M3 screw
terminal.
● Themeasuringaccuraciesnotedinthegeneral
specicationshaveamarginoferrorthattakes
intoaccounttheproduct'scomponentsandthe
equipmentusedforadjustmentandtesting.
However,theactualvaluescalculatedfromthe
accuracytestingdatauponshipmentofthe
instrumentfromthefactoryareasfollows.
Input Type Measuring accuracy*
1
(typical value*
2
)
DCV 20mV ±(0.01%ofrdg+5μV)
60mV ±(0.01%ofrdg+5μV)
6V(1-5V) ±(0.01%ofrdg+2mV)
TC
*3
R ±1.1°C
K ±(0.01%ofrdg+0.2°Cfor0.0to
1370.0°C;
±(0.15%ofrdg+0.2°C)for-200.0
to 0.0°C
K
(-200to500°C)
±0.2°C for 0.0 to 500.0°C;
±(0.15%ofrdg+0.2°C)for-200.0
to 0.0°C
J ± 0.2°C for 0.0 to 1100.0 °C;
±(0.10%ofrdg+0.2°C)for-200.0
to 0.0 °C
T ± 0.2°C for 0.0 to 400.0°C;
±(0.10%ofrdg+0.2°C)for-200.0
to 0.0 °C
N ±(0.01%ofrdg+0.2°C)for0.0to
1300.0 °C;
±(0.22%ofrdg+0.2°C)for-200.0
to 0.0 °C
RTD Pt100 ±(0.02%ofrdg+0.2°C)
Pt100
(highresolution)
±(0.02%ofrdg+0.16°C)
rdg:Readingvalue
*1 AppliestoGX90XA-10-U2,A/Dintegrationtime
16.67msormore,Generaloperatingconditions:
23±2ºC,55±10%RH,supplyvoltage90–132,
180–264VAC,powerfrequencywithin50/60
Hz±1%,warm-upof30minutesormore,no
vibrationsorotherhindrancestoperformance.
*2 Forthemeasuringaccuracy(guaranteed),
seethemodule’sgeneralspecications(GS
04L53B01-01EN).
*3 Thesevaluesdonotincludethereference
junctioncompensationaccuracy.