Installation Instructions

4.3ACU-100,ACU-150
connections
Connectionsoverview—ACU-100,
ACU-150
1.SeaT alkng®connection
2.Rudderreferenceconnection
3.Powerconnection
4.RFGroundconnection(drainconductor)
5.Motor(drive)connection
Makingconnections
Forinformationonhowtoconnectthevarious
componentsoftheautopilotsystem,refertothe
followingsections:
•5.1EVandACUinstallationinstructions
•Pilotcontrollerdocuments
•Driveunitinstallationdocuments
Powerconnection—ACU-100,
ACU-150
PowertotheACU-100andACU-150mustbefrom
anappropriatelyfusedandratedsupply.
1.ACU-100,ACU-150powerconnectionpanel
2.Vesselpowerdistributionpanel
Powerconnectioncolors
ColorDescription
ARed
PowerinPositive(+)
12Vdc
BBlack
PowerinNegative(–)
0Vdc
Warning:Positiveground
systems
Donotconnectthisunittoasystemwhich
haspositivegrounding.
Fusesandcircuitprotection
Thereare3levelsofpowerprotectionintheautopilot
system.Thedrive(motor)andassociatedcables
areinitiallyprotectedbythecurrentsensingandstall
conditiondetectionwithintheACUhardwareand
software.Asecondlevelofprotectionisprovided
tothesepartsandtheACUcomponentsbythe
unit'smainpowerfuse.Protectionfortheentire
autopilotsystemanditswiringbacktothemain
powerdistributionpanelisprovidedbyyourvessel’s
circuitbreaker/fuse.
Powersupplycircuitprotection
ProtectthepowersupplyfortheEvolutionsystemat
thedistributionboardwithafuseorcircuitbreaker
thatissuitablefortheACU.Forguidance,referto
mainpowerfuseratingstatedontheACUconnector
panel.Ifindoubt,consultyourlocaldealer.
Internalfuses
TheACUusesstandardautomotivebladefuses.
Sparefusesarelocatedontheundersideofthe
removablecover.
Note:
Forclarity,onlythepowerandfuse-related
connectionsareshownintheillustrationabove.
1.Powerfuse(accessibleviatheremovablecover)
2.SeaT alkng®fuse(fusepowersupplyfromACU
toSeaT alkng®backbone)
3.Powerfuse(labelledwithtotalpowerconsumed
bysystem)
Fuseratings
SeaTalkng®
3A
ACU-100
10A
Cablesandconnections29