XITRON XT2640 - Importing, Exporting or Recording the Measurement Configuration

XT2640OperatingManual 13July2016 Page46of187
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TheSCALEbutton(ifshown)allowsyousetthescalingtoapplytothemeasurementoftheselectedsourceofthetorque
measurement.
TheOFFSETbutton(ifshown)allowsyousettheoffsettoapplytothemeasurementoftheselectedsourceofthetorque
measurement.
Note:
Forsimplicity,thedescriptionsaboveassumethatamotorisbeingmeasured.Measurementofageneratorisidentical
withtherespectivesimilarmeaningsforeachbutton.
TheSCALEandOFFSETbuttonsallowentriesofanyvaluewitheitherpolarity.
12.4.3.3 OVERALLCONFIGURATIONOFMECHAN ICALMEASUREMENTS
TheoverallconfigurationofmechanicalmeasurementsisconfiguredusingthebuttonsintheOVERALLareashownonthescreen.
ThePERIODbuttonallowsyoutoselectthemeasurementperiodforspeedandtorquemeasurements.
Settingsof10ms,30ms,100ms,300ms,1s,3s,10s,30s,100s,VPA1SYNC,VPA2SYNC,andVPA3SYNCareavailable.
Ifyouselectatimeperiodoflessthan1secondthenthemeasurementperiodwillbeaminimumoftheselectedtime.If
either(orboth)digitalinputsofspeedandtorquehaveaperiodoflongerthanthisbutlessthan1secondthenthe
measurementperiod(forbothspeedandtorque)isautomaticallyextendedtoallowmeasurementofthatfrequency.
Ifyouselectatimeperiodofgreaterthan1secondthenthissetsboththemeasurementperiodandalsotheminimum
measurablefrequency(i.e.themaximumperiod)fordigitalinputsofspeedand/ortorque.
IfyouselectanelectricalVPAthenthemeasurementisselectedtobesynchronouswiththeselectedVPA.
Note:
IfyouselecttosynchronizemechanicalmeasurementstoaVPAwhichhasnochannelsselectedthentherewillbe
nomeasurementsofmechanicalspeedortorque.
Recommendation:
Wheretheelectricalpowerofthedrive(foramotor)orthegeneratedenergy(foragenerator)isbeingmeasured
inaVPAintheXT2640thenthatVPAisusuallyselectedforthePERIODsetting.Thisensuresthattherelated
electricalandmechanicalpowermeasurementsaremadeoverthesameperiodsoftime.
TheDIGITSbuttonallowsyoutoselectthatallmechanicalmeasurementresultswillbedisplayedwithlimitedresolutionifdesired.
Settingsof3,4,5and6areavailable.
Note:
Thisonlyaffectsdisplayednumericalresults;itdoesnotaffectanymeasurementsobtainedviaaninterfaceorvia
ahistoricallysavedrecordorviadatalogging.
Recommendation:
Inmostapplicationsthisshouldbesetto5or6,ifthereissignificantinstabilityinthesignalsthisshouldbesetto
3or4.
TheEFF/LOSSbuttonallowsyoutoselecthowthemechanicalpower(ifavailable)isincludedinefficiencyandpowerlossdata.
TheXT2640allowsmechanicalpowertobeincludedinoneofthreeavailabledata;IN,MIDDLEandOUTpower.
Alternatelyitcanbeexcludedfromallthreeofthese.
12.4.4 IMPORTING,EXPORTING ORRECORDINGTHEMEASUREMENTCONFIGURATION
Themethodsforperformingthisarefullydescribedinsection23.
ThemeasurementconfigurationcanbeimportedfromorexportedtoabinaryfileonanexternalUSBdriveattachedtothefront
panelUSBport.
Notes:
ThisfilecontainsalmosttheentireconfigurationoftheXT2640(measurements,screens,harmonicslimits,customscreen
definition,andpreferences).ItdoesnotincludetheinterfaceconfigurationorthePOWERCTRLpreferencesetting.
Youcanhaveanalmostunlimitednumberofconfigurationsavailabletoyoubycreating,exportingandimportingthem
usingaUSBDriveinthismanner.
Briefly,thisisperformedby–
1.
InsertthedriveintothefrontpanelUSBportandwaitforittobeREADY.
2.
PresstheDRIVEINFOareaofthescreen,thescreenshowsthefileexport/importscreen.
3.
Toexport(save)abinaryconfigurationfile–
a.
PresstheCONFIGURATIONbutton.Thescreenchangestoallowingyoutoenterafilename.
b.
Enterthedesiredfilename(theextensionisautomaticallyprovided).
c.
Ifthefilealreadyexiststhenyouarepromptedtorespondifyouwishtooverwriteitornot.
d.
Thefileisthenwritten.
4.
Toimport(load)apreviouslyexportedbinaryconfigurationfile–
a.
PresstheIMPORTbuttonintherightsideofthisscreen,thescreenshowsthefileimportscreen.
b.
PresstheCONFIGURATIONbutton.Therightareaofthescreenshowsalistoftheavailableconfigurationfiles.
c.
Pressthedesiredfilebutton.Thefileisthenimportedandthenewconfigurationisimmediatelyactive.