XITRON XT2640 - Configuring the Interface

XT2640OperatingManual 13July2016 Page37of187
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thenanyamplitudemeasurementsinprogressareterminatedandnewmeasurementsarestartedusingthisnew
frequency.
IfNORMALisselectedthentheXT2640measuresthefundamentalfrequencyusingameasurementperiodoptimizedfor
bothspeedandresolution.Changesinthefundamentalfrequencyarenotapplieduntilthenextamplitudemeasurementis
started.
IfSLOWisselectedthentheXT2640measuresthefundamentalfrequencyusingalongmeasurementperiodwhichhasthe
bestresolution.Changesinthefundamentalfrequencyarenotapplieduntilthenextamplitudemeasurementisstarted.
Note:
WhenconfiguredforEN61000‐3‐2or‐12measurementsthispreferencesettingisignored.
Recommendations:
FormostapplicationstheNORMALsettingshouldbeused.
Forapplicationswhereitisdesirabletotrackchangesinthefundamentalfrequencyascloselyaspossible(e.g.avariable
speedmotor)orwhenusingtheXT2640atfrequenciesbelow1HzthentheFASTsettingshouldbeconsidered.
ForapplicationswherethefundamentalfrequencyisconsiderablyaffectedbymodulationorothereffectsthentheSLOW
settingshouldbeconsidered.
12.3.1.6 SELECTINGAPHASEPREFERENCE
ThePHASEbuttonallowsyoutoselecthowphaseinformationisdisplayedandreturnedviaaninterface.TheXT2640supports
severalmethodsofshowingphaseresultsasselectedbythispreferencesettingwhichaffectsallphaseresults.
If
Math,+/‐180°,CWisselectedthentheXT2640returnsallphaseresultsasmathematicalphasesintherangefrom‐180°
to+180°andthechartontheVECTORSscreen(see12.8)isdisplayedwithincreasingphaseasaclockwiserotationofthe
chart.
If
Math,+/‐180°,CCWisselectedthentheXT2640returnsallphaseresultsasmathematicalphasesintherangefrom‐180°
to+180°andthechartontheVECTORSscreen(see12.8)isdisplayedwithincreasingphaseasacounter‐clockwise
rotationofthechart.
If
Math,360°,CWisselectedthentheXT2640returnsallphaseresultsasmathematicalphasesintherangefrom0°to360°
(nopolarityisdisplayed)andthechartontheVECTORSscreen(see12.8)isdisplayedwithincreasingphaseasaclockwise
rotationofthechart.
If
Math,360°,CCWisselectedthentheXT2640returnsallphaseresultsasmathematicalphasesintherangefrom0°to
360°(nopolarityisdisplayed)andthechartontheVECTORSscreen(see12.8)isdisplayedwithincreasingphaseasa
counter‐clockwiserotationofthechart.
If
Delay,+/‐180°,CWisselectedthentheXT2640returnsallphaseresultsasphasedelaysintherangefrom‐180°to+180°
andthechartontheVECTORSscreen(see12.8)isdisplayedwithincreasingphaseasaclockwiserotationofthechart.
If
Delay,+/‐180°,CCWisselectedthentheXT2640returnsallphaseresultsasphasedelaysintherangefrom‐180°to
+180°andthechartontheVECTORSscreen(see12.8)isdisplayedwithincreasingphaseasacounter‐clockwiserotation
ofthechart.
If
Delay,360°,CWisselectedthentheXT2640returnsallphaseresultsasphasedelaysintherangefrom0°to360°(no
polarityisdisplayed)andthechartontheVECTORSscreen(see12.8)isdisplayedwithincreasingphaseasaclockwise
rotationofthechart.
If
Delay,360°,CCWisselectedthentheXT2640returnsallphaseresultsasphasedelaysintherangefrom0°to360°(no
polarityisdisplayed)andthechartontheVECTORSscreen(see12.8)isdisplayedwithincreasingphaseasacounter‐
clockwiserotationofthechart.
Note:
IfaMathpreferenceforphaseisselectedthenifaphaseoføisshownthenmathematicallythesignalisS.sin(ωt+ø).
IfaDelaypreferenceforphaseisselectedthenifaphaseoføisshownthenmathematicallythesignalisS.sin(ωt‐ø).
Theselectionofthenumericrangeforphaseresultsdoesnotaffecttheresultsthemselves.Phaseresultsintherange0°to
+180°areunaffected;resultsintherange+180to+360°(fora0to360°selection)areexactlyequivalenttotherange‐180
to0°resp.(fora+/‐180°selection)andviceversa.
TheCWorCCWportionoftheselectiononlyaffectshowthevectorschartisdisplayedontheVECTORSscreen,noother
dataorresultsareaffectedbythisselection.
12.3.2 CONFIGURINGTHE INTERFACE
YoumayinitiatetheInterfaceConfigureScreenbyeitherpressingtheInterfaceInfoAreawhileonanymainscreen,orpressingthe
SYSCONFIGbuttonandthenpressingtheINTERFACEbuttononthatscreen.
Note:
Changestotheinterfacescanonlybemadewhilenotinremote.