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Curtis Instruments 1238 - VCL Fault Handling and Specific Functions

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#URTIS-ANUAL/3

THROTTLESIGNALWILLBESETTO
4HEFOLLOWINGBRAKEPROCESSINGVARIABLESAREACCESSIBLEBY6#,
6#,6!2)!",% !##%33 $%3#2)04)/.
0OT?2AW 2EAD/NLY 6OLTAGEMEASUREMENTATPIN
"RAKE?0OT?/UTPUT 2EAD/NLY "RAKEPOTINPUTVALUEAFTERBEINGSCALED
FOR
THEPROPERWIRING
/3?"RAKE 2EAD/NLY "RAKEPOTVALUEAFTERMAPPINGTOBEUSED

IN6#,
WHEN6#,"RAKE%NABLE/NAND
"RAK
E4YPEn
6#,?"RAKE 2EAD7RITE 6#,ACCESSIBLEBRAKECOMMAND
-APPED?"RAKE 2EAD/NLY "RAKEPOTVALUEAFTERMAPPING
"RAKE?#OMMAND 2EAD/NLY #OMMANDRESULTINGFROMBRAKEPROCESSING
#ONTROL-ODEAND-OTOR#ONTROL0ROCESSING
&IGUREBEGINSWITHTHE4HROTTLE?#OMMANDAND"RAKE?#OMMANDINPUTS
ANDASWITCHTHATWILLZEROTHE4HROTTLE?#OMMANDIF"RAKE?#OMMANDISANY
VALUEBUT4HESIGNALCHAINSARETHENDIRECTEDTO3PEED-ODE%XPRESS3PEED
-ODEOR4ORQUE-ODEBASEDON#ONTROL-ODE3ELECT.OTETHATIN4ORQUE
-ODETHEREISNOEMERGENCYREVERSE
4HE CONTROL MODE FUNCTION USES ALGORITHMS TO CONVERT THE INCOMING
THROTTLEANDBRAKESIGNALSANDTHEMOTORRPMINPUTINTOA#ONTROLLER4ORQUE
#OMMAND
4HE
SELECTEDCONTR
OLMODECALCULATESTHEDESIRED#ONTROLLER4ORQUE#OM
MANDWHICHIS
PASSEDTOTHE-OTOR#ONTROLBLOCKSEE&IGURE4HE-OTOR
#ONTROLBLOCKUSESITSMATHEMATICALMODELOFTHESPECIlC!#INDUCTIONMOTOR
USEDTOGENERATETHEHIGHEFlCIENCYTHREEPHASEOUTPUTSTHATAREOUTPUTTOTHE
!#MOTORVIATHECABLESCONNECTEDTOTHE
56AND7TERMINALS
).4%2&!#).'
4(%02/0/24)/.!,#522%.4$2)6%2
6#,CODECANDIRECTLYINTERFACETHEPROPORTIONALCURRENTDRIVER0$ASSHOWN
IN &IGURE 6#,CAN CHANGETHE WORKING PARAMETERS OFTHE 0$AND CAN
PROVIDETHECOMMAND
$EPENDINGONHOWTHE0$SYSTEMISTOBEUSEDCERTAINPARAMETERSNEED
TOBESETTHEYCANBESETVIATHEHANDHELDPROGRAMMERORVIA6#,
0$?%NABLEMUSTBESET/NFORCURRENTCONTROLOTHERWISE
THE
0$?/UTPUT
WILLBECONTROLLEDBYTHE6#,FUNCTION
0UT?07-07-XXXXWHICHISVOLTAGECONTROL
 (YD?,OWER?%NABLEMUSTBESET/NTOUSETHETHROTTLEINPUT
TOCONTROLLOWERINGINAHYDRAULICLIFTLOWERSYSTEM
 (YD?,OWER?%NABLEMUSTBESET/FFTOALLOWUSINGA6#,
VARIABLE6#,?0$?4HROTTLEASTHE0$COMMAND
/NCETHE 0$ PARAMETERS ARESET THE 0$?4HROTTLEVARIABLE WILL BE MAPPED
6#,

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