SCMInputs
ThepowerinputLEDshouldbeilluminatedwhenthekeyswitchisintheON
position.ThepowerinputLEDshouldalsobeilluminatedwhenthekeyswitchis
intheSTARTposition.
ThestartinputLEDshouldbeilluminatedwhenthekeyswitchisintheSTART
position.
TheneutralinputLEDshouldbeilluminatedwhenthetractionpedalisinthe
neutralposition.
TheparkingbrakeoffinputLEDshouldbeilluminatedwhenyoudonotset
theparkingbrake.
ThePTOswitchinputLEDshouldbeilluminatedwhenthePTOswitchisON
(pulledout).
TheinseatinputLEDshouldbeilluminatedwhentheoperatorissittinginthe
seat.
Thehigh-temperatureshutdowninputLEDshouldbeilluminatedwhenthe
high-temperatureshutdownswitchclosesduetoenginecoolanttemperatureof
approximately115°C(240°F).
Thehigh-temperaturewarninginputLEDshouldbeilluminatedwhenthe
high-temperaturewarningswitchclosesduetoenginecoolanttemperatureof
approximately105°C(220°F).
ThebacklapinputLEDisnotusedontheGroundsmaster3280-Dor3320
machine.
SCMOutputs
g227291
Figure113
1.PowerinputLED
5.PTOoutputLED
9.InseatinputLED
2.StartinputLED
6.NeutralinputLED10.High-temperature
shutdowninputLED
3.EnginerunoutputLED
7.ParkbrakeoffinputLED
11.High-temperaturewarning
inputLED
4.StartoutputLED8.PTOswitchinputLED
12.BacklapinputLED
ThestartoutputLEDshouldbeilluminatedwhenthekeyswitchisintheSTART
positionwiththetractionpedalintheneutralposition,thePTOswitchOFF,and
eithertheseatisoccupiedorparkingbrakeisset.
TherunoutputLEDshouldbeilluminatedwhenthekeyswitchisintheON
positionandinputsfromtheneutral,parkingbrake,PTO,seat,andengine
coolanttemperatureswitchesindicatesafeengineoperation(e.g.,theseat
isoccupiedandtheparkingbrakeisdisengagedwhenthetractionpedalis
pressed).
ElectricalSystem:GeneralInformation
Page6–4
Groundsmaster
®
3280-D/3320
05138SLRevB