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Curtis Instruments 1238 - KSI and Coil Return; Throttle and Brake Inputs; Throttle Input Specifications

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#URTIS-ANUAL/3

).34!,,!4)/.7)2).' )/3IGNAL3PECIlCATIONS
+3)ANDCOILRETURN
+3)INPUTPROVIDESPOWERFORALLLOWPOWERCONTROLCIRCUITSPOWERCAPACITOR
PRECHARGEBEFOREMAINCONTACTORTURNONPOWERSUPPLYOUTPUTSANDHIGH
POWEROUTPUTDRIVERS"ATTERYVOLTAGEISSENSEDONTHEINPUTFORTHE6#,BAT
TER
YDISCHARGE
FUNCTION
#OIL2ETURNSHOULDBEWIREDTOTHEPOSITIVEBATTERYSIDEOFTHECONTACTORS
BEINGDRIVENSOTHATSWITCHINGNOISEASSOCIATEDWITH07-OPERATIONOFTHE
CONTACTORSISLOCALIZEDTOTHECONTACTORWIRINGONLY
)T IS IMPORTANT TO MAINTAIN THE DIVISIONBETWEEN +3) ANDCOIL RETURN
INORDERTOENSUREREVERSEPOLARITYPROTECTIONVEHICLEWIRINGCORRECTBATTERY
TERMINALSREVERSED
4HROTTLEANDBRAKEINPUTS
4HETWOPOTINPUTSAREINDEPENDENTLYPROGRAMMABLETOALLOWUSEOFAVOLTAGE
THROTTLEORAWIREORWIRERESISTANCETHROTTLE6OLTAGETHROTTLESREQUIREONLY
THE0OT7IPERINPUTWITH)/'ROUNDFORTHERETURNLINE2ESISTANCETHROTTLES
REQUIRE0OT7IPERAND0OT,OWWIREOR0OT(IGH0OT7IPERAND0OT,OW
WIRE!LLTHROTTLE)/ISPROTECTEDAGAINSTSHORTSTO"OR"
!LTERNATIVELYTHESETWOINPUTSCANBEUSEDFORANALOGSIGNALSOTHERTHAN
THETHROTTLEANDBRAKEPOTINPUTS#ONlGURINGTHEINPUTSFORUSEWITHOTHER
SIGNALSREQUIRES6#,PROGRAMMINGSEE3ECTION
4(2/44,%).05430%#)&)#!4)/.3
 /0%2!4).'
).054 33).+ 02/4%#4%$ %3$

3)'.!,.!-% 0). 6/,4!'%
)-0%$!.#% #522%.4 6/,4!'% 4/,%2!.#%
4HROTTLE0OT(IGH  6SHORTED NA M! 6TO ÒK6AIR
0OT(IGH  TO0OT,OW NOMINAL -AX66 DISCHARGE
6OPEN SOURCE
CIRCUIT
4HROTTLE0OT7IPER TO6 KΩ M!
0OT7IPER  VOLTAGE NOMINAL
ANDWIRE SOURCE
WIRE
0OT,OW  TO6 ΩNOM &AULTSIF 6TO
ABOVE -AX66
M!
SINK
+3)!.$#/),2%452.).05430%#)&)#!4)/.3
 /0%2!4).'
).054 02/4%#4%$ %3$

3)'.!,.!-% 0). 6/,4!'%
#522%.4 6/,4!'% 4/,%2!.#%
+3)  "ETWEENUNDER !MAX
Ò-AX66 ÒK6AIR
ANDOVERVOLTAGE
CONTINUOUS
DISCHARGE
#OIL2ETURN

CUTBACKS
!MAX

+3)6TO
-AX66

!DDITIONALLYMUSTCARRYTHECURRENTSUPPLIEDTOTHEDRIVERLOADSBYTHECOILRETURNPIN
/NTHETHECOMBINEDCURRENTSUPPLIEDBYALLSEVENOUTPUTDRIVERSSHOULDNOTEXCEED!

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