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LMVSeriesTechnicalInstructions 

DocumentNo.LV5‐1000

SCCInc. Page1 Section5

Section5‐VariableSpeedDriveControl

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TableofContents

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Introduction....................................................................................................................................2

VFDandACInductionMotorFundamentals..................................................................................2

LineReactors...................................................................................................................................3

OutputWiring/LoadReactors.......................................................................................................4

ShaftCurrent...................................................................................................................................5

BrakingResistors.............................................................................................................................5

TypesofVFDs:VectorandVolt/Hz................................................................................................7

CentrifugalBlowerFundamentals..................................................................................................7

ConfiguringVFDsforusewiththeLMV52......................................................................................8

StandardizingtheLMV52................................................................................................................9

BlowerSpeedMonitoring.............................................................................................................13

SuggestedSetupProcedurefortheVFDControl.........................................................................15

AdditionalTipsforBurnerswithVFDControl..............................................................................16

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