Curtis Instruments 1234 User Manual

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-AX3PEED nRPM $ElNESTHEMAXIMUMREQUESTEDMOTORRPMATFULLTHROTTLE0ARTIALLYAPPLIED
-AX?3PEED?3PD- n THROTTLEISSCALEDPROPORTIONATELYEGAPPLIEDTHROTTLECORRESPONDSTO
AREQUESTF
OROFTHESET-AX3PEED6ALUE
 )F-AX?3PEED?3PD-
ISSETRPMTHROUGH6#,OR#!.THETHROTTLE
REQUESTISZ
EROED
 .OTE
4HEMAXIMUMMOTORRPMISSUBJECTTOTHECONSTRAINTSONPAGE
+P n $ETER
MINESHOWAGGRESSIVELYTHESPEEDCONTROLLERATTEMPTSTOMATCH
+P?3PD- n THESPEEDOFTHEMOTORTOTHECOMMANDEDSPEED,ARGERVALUESPROVIDE
TIGHTERCONTROL

)FTHE
GAINISSETTOOHIGHYOUMAYEXPERIENCEOSCILLATIONSASTHE
CONTROLLERTRIESTOCONTROLSPEED)FITISSETTOOLOWTHEMOTORMAYBEHAVE
SLUGGISHLYANDBEDIFlCULTTOCONTROL
+I n
 4HE
INTEGRALTERM+IFORCESZEROSTEADYSTATEERRORSOTHEMOTORWILLRUN
+I?3PD- n ATEXACTLYTHECOMMANDEDSPEED,ARGERVALUESPROVIDETIGHTERCONTROL
 )FTHE
GAINISSETTOOHIGHYOUMAYEXPERIENCEOSCILLATIONSASTHE
CONTROLLERTRIESTOCONTROLSPEED)FITISSETTOOLOWTHEMOTORMAYTAKE
A
LONGTIME
TOAPPROACHTHEEXACTCOMMANDEDSPEED
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+VFF n! 4HISVELOCITYFEEDFORWARDTERMISDESIGNEDTOIMPROVETHROTTLERESPONSIVENESS
+VFF?3PD- n ANDSPEEDCONTROLLERPERFORMANCEESPECIALLYATLOWSPEEDS
 &OR
TRACTIONSYSTEMSSETITTOnOFTHECURRENTNEEDEDTOMAINTAIN
AVERYLOWSPEEDUNLOADEDONmATGROUND

&OR
APUMPSYSTEMSETITTOTHELOWESTLOADCURRENTIETHECURRENT
RUNNINGATTHEMINIMUMLOAD!LTERNATIVELYTHERESPONSIVENESSOFAPUMP
SPEEDCONTROLLOOPCANBESIGNIlCANTLYENHANCEDBYUSINGA6#,PROGRAMTO
CONTINUOUSLYUPDATETHISPARAMETERTOTHEAPPROPRIATEVALUEASEACHPUMP
LOADISREQUESTED
"UILD2ATE nSEC $ETERMINESHOWFASTTHE+VFFTERMBUILDSUP
6EL?&&?"UILD?2ATE?3PD- n  &ORTRACTIONSYSTEMSIFYOUFEELORHEARTHEMECHANICALSLOPPICKUP
ABRUPTLYWHENYOUMOVETHETHROTTLEFROMNEUTRALTOAVERYSMALLVALUE
SLO
WINGTHE
BUILDRATEIESETTINGITTOAHIGHERVALUEWILLSOFTENTHEFEEL
 &OR
APUMPSYSTEMSTARTWITHTHISPARAMETERATTHEMINIMUMSETTING
3LOWINGITDOWNIESETTINGITTOAHIGHERVALUEWILLREDUCESPEEDOVERSHOOT
IFTOOMUCHFEEDFORWARDHASBEENCOMMANDED
2ELEASE2ATE nSEC $ETERMINESHOWFASTTHE+VFFTERMRELEASES)FTHERELEASESEEMSTOOABRUPT
6EL?&&?2ELEASE?2ATE?3PD- n SLOWINGTHERELEASERATEIESETTINGITTOAHIGHERVALUEWILLSOFTENTHEFEEL

)TSHOULDBESETFASTENOUGHIEATALOWENOUGHVALUETOPREVENTTHE
VEHICLEFROMRUNNINGONAFTERTHROTTLERELEASE

Curtis Instruments 1234 Specifications

General

Brand	Curtis Instruments
Model	1234
Category	Controller
Language	English