XITRON XT2640 - Mechanical Channel Input and Accuracy Specifications (Mt Type); Nput Apabilities and Haracteristics; Digital Input Measurement Specifications; Analog Input Measurement Specifications

XT2640OperatingManual 13July2016 Page180of187
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29 MECHANICALCHANNELINPUTANDACCURACYSPECIFICATIONS(MTTYPE)
Specificationsarevalidunderthefollowingconditions‐
 Allspecificationsarevalidfollowinga20minutewarm‐upperiodafterturningpowerONintheXT2640,whenoperated
fromthespecifiedsourceofpowerandwithinthespecifiedenvironmentalconditions.
 AllspecificationsotherthanAnalogInputMeasurementSpecificationsarevalidforthelifetimeoftheXT2640;AnalogInput
MeasurementSpecificationsarevalidfor2yearsaftercalibration.
 AllspecificationsarevalidattheXT2640terminals.
Note:
TheNoDamageinputsignalrangeisthatwhichwillnotcauseimmediatedamage.Continueduseoftheselevelsmay
reducereliabilityand/orfutureaccuracy.
TheSpecifiedinputsignalrangeisthatofcontinuouslyappliedsignallevelsforwhichmeasurementsareguaranteedtobe
withinthespecifiedaccuracies.
Accuracyspecificationsareguaranteedmaximumerrors.Youshouldroundthetotalmaximumerrorupwardstothenext
integercountofresolution(e.g.ifthetotalerroris18.3mVandthedataisreadwith1mVresolutionthenuse19mVasthe
maximumerror).
Allpercentagesare%ofreadingunlessotherwisedescribed.
29.1 INPUTCAPABILITIESANDCHARACTERISTICS
InputTerminals SPD(Speed):BNC(isolatedfromXT2640chassis),configurableasanalogordigitalinput
TRQ(Torque):BNC(isolatedfromXT2640chassis),configurableasanalogordigitalinput
DIR(Direction):BNC(isolatedfromXT2640chassis),digitalinput
InputCommon‐Mode Upto‐15Vpkto+15Vpkspecified
Upto‐30Vpkto+30Vpkwithnodamage
AnalogInputRange Upto‐12Vdcto+12Vdcspecified
Upto‐15Vpkto+15Vpkspecified
Upto‐30Vpkto+30Vpkwithnodamage
DigitalInputRange LO:<0.8V(nominal)
HI:>2V(nominal)
Upto‐30Vpkto+30Vpkwithnodamage
InputImpedance Eachinputnominally150kΩtoXT2640chassisground
29.2 DIGITALINPUTMEASUREMENTSPECIFICATIONS
DigitalFrequencyTiming SignalmustbeLOfor>500ns
SignalmustbeHIfor>500ns
Frequencymeasurementupto500kHz(typically900kHz)
Minimummeasurablefrequencylimitedbyusersetmeasurementperiod
DIRSetup/HoldTiming DIRmustbestablefor>550nspriortoandafteractiveedgeofSPDinput
MaximumFrequencyError MeasurementPeriod>10ms:0.01%
MeasurementPeriod≤10ms:0.015%
29.3 ANALOGINPUTMEASUREMENTSPECIFICATIONS
MaximumInputError 0.05%+1mV
Add(0.005%+50µV)perCoutsideof±5Cfromcalibrationtemperature
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