epro MMS 6000 - Order analysis

 MMS6110Directionforuse
 Visualization  Page25
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operateinthetimecontrolledmode,thelengthofthetimeaxisdependsontheupperand
loweroperatingfrequencylimitsandtheactualspeed.
• Atchosentimecontrolmode,thetimeaxislengthdependsonthelowerandupperoper-
atingfrequency.
IndicationFFTAmplitudeandFFTPhase
• Atchosenspeedcontrolthespectrumofamplitudes(zero-peak)andphasesisrepre-
senteddependingontheordernumberaccordingtotheprincipleofadigitalordertrans-
formation.
Thisdisplaymodewaschosentoavoidblurringandjitteratlittlespeedchanges,which
mayeasilyhappenwhenperformingFFTanalysis.
• Atchosentimecontrolmode,amplitudeandrelativephaseresponsesaredisplayedover
thefrequencyaccordingtotheFastFourierTransformation(FFT).
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Thevaluesoftherelativephasearesuitableforlongtermmonitoringorobservationon
changesbutwithoutfurtheractiontheyarenotsuitableforevaluatingtheactualphase
e.g.forbalancingactivities.
Cursor
Bothdiagramsshowacommoncursorinformofaverticalline.
Selection: ClickitwiththemouseorstriketheTABkey.Havingdonethis,triangle
markswillappearattheendsoftheXandYaxis.
Moving: Drawthecursorbykeepingthemousekeypressedandclickingameas-
uringpointorbymovingthecursorwiththecursorkeys→←↑↓.
ThecursormaybemovedinparalleltotheX-axis,butitcanonlybefixedatmeasuring
points.
FieldsFFTOrder,AmplitudeandPhase
Thefieldsintheupperrightpartshowthevaluesofthemeasuringpointsmarkedwiththe
cursor.Theupperlineshowsordernumberresp.frequency,thenthevaluesforamplitude(o-
peak)ofchannels1and2(inµm)andtherelativephasesofchannels1and2(indegree)re-
latedtothekeypulse.
3.5 Orderanalysis
DialogOrderAnalysisiscalledupviamenuDisplay-Orderanalysis.
Anorderanalysisisonlycarriedout,ifinpropertypageDataacquisitionfunctionDiag-
nosissystemhasbeenswitchedon.Otherwiseonlythesumvalue(vibrationamplitude)and
theGAPareshown.
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