Siemens LMV52.440B1 - Suggested Setup Procedure for the VFD Control

LMVSeriesTechnicalInstructions 
DocumentNo.LV5‐1000
SCCInc. Page15 Section5
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SuggestedSetupProcedurefortheVFDControl
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AfterverifyingthatallVFDrelatedcomponentsareinstalledandwiredcorrectly,theVFDcontrolcanbe
setup.Naturally,iftheburnerhasaVFD,thismustbedonebeforetheRatioControlCurvesare
commissioned.
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Particularattentionshouldbepaidtothefollowingpoints:
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1. Thearrowonthespeedwheelpointsinthesamedirectionasthecorrectblow errotation.
2. Thegapbetween
theinductivesensorandthespeedwheelfingeriscorrect(approx.1/16").
3. TheVFD,motor,andLMV52shareacommonground.
4. TheanalogsignalfromtheLMV52totheVFDmustbeinshieldedcablewithoneendoftheshield
grounded.
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Afterthesepoin
tsaredouble‐checked,theLMV52parameterscanbeset.
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1. ActivatetheVFD.TheVFDcontrolcanbeactivated/deactivatedforeitherfuelinadualfuel
burner.Typically,ifaburnerhasaVFD,itwillbeactivatedoneachfuel.TheVFDcanbeactivated
usingthefollowingmenupath:
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Params&Display>RatioControl>Gas/OilSetting>VSD
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2. Settheairactuatortobe“airinfluenced”.
Thisisdonesothattheairdamperwillopentopre‐purge
positionwhentheLMV52isstandardized.Thiscanbedoneusingthefollowingmenupath:
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Params&Display>RatioControl>Gas/OilSettings>AirActuator=airinfluen
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3. SetorchecktheLMV52ramptimes.Bothofthesemustbeatleast5secondslo
ngerthantheramp
timessetintheVFD.Theramptimescanbecheckedusingthefollowingmenupath:
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Params&Display>RatioControl>Times>OperatRampMod
Params&Display>RatioControl>Times>TimeNoFlame
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4. Ifusinga6‐
fingerspeedwheel(rarelynecessary‐onlyiftheVFDwillbeoperatedunder300RPM),
changethenumberofpulsesperrevolutionfrom3to6usingthefollowingmenupath:
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Params&Display>VSDModule>Configuration> Speed>NumPulsperR
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5. ConfiguretheanalogoutputoftheLMV5
2tomatchtheanaloginputoftheVFD.Typically,a4‐
20mAsignalisused.Theanalogoutputsignalcanbesetusingthefollowingmenupath:
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Params&Display>VSDModule>Configuration>Speed>SetpointOutput
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6. IftheVFD wasnotpurchasedpre‐
programmedforanLMV52,settherelevantVFDparameters.See
sectiononpreviouspagestitled"ConfiguringVFDsforusewiththeLMV52".
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