Danfoss TTS400

Table 5-5 Bearing Fault Types
Bearing Status Description
StartupCalibrationCheckFault AdiscrepancybetweentheBearingStartupcheckandthestoredcalibrationvalueshasbeendetected.
AxialDisplacementFault AxialOrbithasexceededthelimitlongerthanthemaximumtimeallowable.
AxialOvercurrentFault AxialCurrenthasexceededthelimitlongerthanthemaximumtimeallowable.
FrontRadialDisplacementFault FrontRadialOrbithasexceededthelimitlongerthanthemaximumtimeallowable.
FrontRadialXOvercurrentFault FrontRadialXCurrenthasexceededthelimitlongerthanthemaximumtimeallowable.
FrontRadialYOvercurrentFault FrontRadialYCurrenthasexceededthelimitlongerthanthemaximumtimeallowable.
RearRadialDisplacementFault RearRadialOrbithasexceededthelimitlongerthanthemaximumtimeallowable.
RearRadialXOvercurrentFault RearRadialXCurrenthasexceededthelimitlongerthanthemaximumtimeallowable.
RearRadialYOvercurrentFault RearRadialYCurrenthasexceededthelimitlongerthanthemaximumtimeallowable.
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5.2 Troubleshooting with the Service Monitoring Tools Software
TheSMTsoftwarepackagecanbeusedtoviewdetailedcompressorinformationforoperationalstatusindications
andtroubleshootingprocedures.PleaserefertotheServiceMonitoringToolsUserManualforthedetailsonhowto
usetheSMTsoftware.
5.2.1 Compressor Fault Troubleshooting
Whentroubleshootingacompressorfault,detailedanalysisofthisdatashouldbemade(inconjunctionwitha
compressorrecordingfile,ifpossible)todeterminethespecificfaultanddeterminetherootcauseoffault
occurrence.
Downloadingfaultandeventlogseverytimeacompressorisvisitedisusefulfordocumentingcompressor
operationalhistory.
FaultandeventhistorycanbeextractedfromthecompressormemoryintheSMTLoggedEventandFaultViewer
tool.SeethelatestServiceMonitoringToolsUserManualforuserinstructions.
ActivecompressorfaultandalarmmessagescanbeviewedintheSMTActiveAlarm/FaultViewertool.Seethelatest
ServiceMonitoringToolsUserManualforuserinstructions.
CompressorAlarmandFaultsettingscanbefoundintheConfigureAlarms/FaultsmenuoptionoftheActive
Alarm/FaultViewertool.
TheCompressor Data RecordingandPlaybacktoolprovidesamethodofreviewingoperationalconditionswithouta
connectiontothecompressor.Italsocreatesafiletoelectronicallytransmitforpeerreview.SeethelatestService
MonitoringToolsUserManualforuseinstructions.
Thefollowingprincipleisappliedwhenhavingbothafaultand/oranalarmlimitastriggers.RefertoFigure5-1
FaultTriggerMethodsonpage255forexplanationsregardingfaultsandalarmsandthetriggermethod
terminologyisused:
l
Instantfaulttriggering(INS)
l
AscendingFaultTriggering(AFT)
l
DescendingFaultTriggering(DFT)
l
RangeFaultTriggering(RFT)
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