Curtis Instruments 1238 - Proportional Driver Menu

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#URTIS-ANUAL/3 
02/'2!--!",%0!2!-%4%23 0ROPORTIONAL$RIVER0ARAMETERS
 4HESEPARAMETERDESCRIPTIONSASSUMETHEPROPORTIONALDRIVER
ISBEINGUSEDTODRIVEAPROPORTIONALVALVEANDTHATTHE0$
CURRENTCONTROLSOFTWAREISACTIVE0$?%NABLE/N
02/0/24)/.!,$2)6%2-%.5
  !,,/7!",% 
 0!2!-%4%2 2!.'% $%3#2)04)/.
0$%NABLE /N/FF $ETERMINESHOWTHE07-OFTHEPROPORTIONALDRIVERISCONTROLLED
0$?%NABLE /N/FF 7HENPROGRAMMED/NITISCONTROLLEDBYTHECONTROLLERS0$CURRENTCONTROL
/PTION"ITS;"IT=  SOFTWARE7HENPROGRAMMED/FFITISCONTROLLEDBYTHE6#,FUNCTION
0UT?07-07-VALUESEE&IGUREPAGE
(YD
,OWER%NABLE /N/FF 7HENPROGRAMMED/NLOWERINGISCONTROLLEDBYTHROTTLEPOSITION
(YD?,OWER?%NAB
LE /N/FF 7HENPROGRAMMED/FFLOWERINGISCONTROLLEDBYTHE6#,VARIABLE6#,?0$?
/PTION"ITS;"IT=  4HROTTLE
SEE&IGUREPAGE
0$-AX#URRENT
 n!

4HE,OWERSPEEDISDETERMINEDBYTHEAPERTUREOFTHEPROPORTIONALVALVE
0$?-AX?#URRENT n  4HISPARAMETERSETSTHEMAXIMUMALLOWEDCURRENTTHROUGHTHEVALVE
 WHICHIN
TURNDElNESITSAPERTURE
0$-IN#URRENT n!

3ETSTHEMINIMUMALLOWEDCURRENTTHROUGHTHEPROPORTIONALVALVE
0$?-IN?#URRENT n  -OSTPROPORTIONALVALVESNEEDANONZEROCLOSEDCURRENTINORDERTOSTART
 OPENINGIMMEDIATELY
WHEN,OWERISREQUESTED
0$$ITHER n

$ITHERPROVIDESACONSTANTLYCHANGINGCURRENTINTHECOILTOPRODUCEARAPID
0$?$ITHER?0ERCENT n  BACKANDFORTHMOTIONOFTHEVALVETHISKEEPSTHEVALVELUBRICATEDANDALLOWS
 LOWFR
ICTIONPRECISEMOVEMENT4HE0$$ITHERPARAMETERSPECIlESTHE
 AMOUNTOF
DITHERASAPERCENTAGEOFTHE0$MAXCURRENTANDISAPPLIEDIN
 ACONTIN
UOUSCYCLEOFADDSUBTRACT
0$$ITHER0ERIOD nMSEC

3ETSTHEPERIODFORPROPORTIONALVALVEDITHER
0$?$ITHER?0ERIOD n
0$+P n

3ETSTHEPROPORTIONALGAINOFTHECURRENTFEEDBACKCONTROLLER(IGHERGAINS
0$?+P n  FORCETHECONTROLLOOPTORESPONDQUICKLYBUTMAYCAUSEOSCILLATIONS
0$+I n

3ETSTHEINTEGRALGAINOFTHECURRENTFEEDBACKCONTROLLER)NTEGRALGAINTRIES
0$?+I n  TOFORCETHEERRORTOZERO(IGHERGAINSFORCETHECONTROLLOOPTORESPOND
 QUICKLY
BUTMAYCAUSEOSCILLATIONS