FLIR Raymarine p70s - SeaTalkng Power Supply

4.3SeaTalk
ng®
powersupply
PowerissuppliedtotheproductovertheSeaTalk
ng
backbone.
ASeaTalk
ng
backbonerequiresone12Vdcpower
supply,connectedtotheSeaTalk
ng
backbone.This
canbeprovidedby:
•abattery
(1)
,viathedistributionpanel,
•anAutopilotControlUnit(ACU)
(2)
,
•anSPXcoursecomputer
(2)
,
•for24Vvesselsa5amp,regulated,continuous
24Vdcto12Vdcconverterisrequired.
Note:
•(1)Thebatteryusedforstartingthevessel’s
engine(s)shouldNOTbeusedtopowerthe
SeaTalk
ng
backboneasthiscancausesudden
voltagedrops,whentheenginesarestarted.
•(2)TheACU-100andSPX-5cannotbeusedto
powertheSeaTalk
ng
backbone.
SeaTalk
ng®
powerconnectionpoint
Smallsystems
Ifthebackbonelengthis60m(197ft)orless,the
powerconnectionpointmaybeconnectedatany
pointinthebackbone.
Largesystems
Ifthebackbonelengthisgreaterthan60m(197ft),
thepowerconnectionpointshouldbeconnectedat
apointthatcreatesabalancedcurrentdrawfrom
eachsideofthebackbone.TheLoadEquivalency
Number(LEN)isusedtodeterminethepower
connectionpointforthesystem.
00
D13424-1
LEN = 3
LEN = 3
LEN = 1
LEN = 1
LEN = 1
LEN = 1
12 V dc
IntheexampleabovethesystemhasanoverallLEN
of10,sotheoptimumconnectionpointwouldbeto
have5LENeithersideoftheconnectionpoint.
In-linefuseandthermalbreakerratings
TheSeaTalk
ng®
network’spowersupplyrequiresan
in-linefuseorthermalbreakertobetted.
In-linefuseratingThermalbreakerrating
5A
3A(ifonlyconnectingone
device)
Note:
•Thesuitablefuseratingforthethermalbreaker
isdependentonthenumberofdevicesyouare
connecting.Ifindoubtconsultanauthorized
Raymarinedealer.
SeaTalk
ng®
systemloading
Themaximumloading/LENforaSeaTalk
ng
system
dependsonthelengthofthebackbone.
LoadingtypeBackbonelengthTotalLEN
Unbalanced
20m(66ft)
40
Unbalanced
40m(131ft)
20
Unbalanced
60m(197ft)
14
Balanced
60m(197ft)or
less
100
Balanced
80m(262ft)
84
Balanced
100m(328ft)
60
Balanced
120m(394ft)
50
Balanced140mto160m
(459ftto525ft)
40
Balanced180mto200m
(591ftto656ft)
32
Powerdistribution—SeaTalk
ng®
Recommendationsandbestpractice.
•OnlyuseapprovedSeaTalk
ng®
powercables.Do
NOTuseapowercabledesignedfor,orsupplied
with,adifferentproduct.
•Seebelowformoreinformationonimplementation
forsomecommonpowerdistributionscenarios.
Important:Whenplanningandwiring,takeinto
considerationotherproductsinyoursystem,some
ofwhich(e.g.sonarmodules)mayplacelarge
powerdemandpeaksonthevessel’selectrical
system.
Note:Theinformationprovidedbelowisfor
guidanceonly,tohelpprotectyourproduct.It
coverscommonvesselpowerarrangements,but
doesNOTcovereveryscenario.Ifyouareunsure
howtoprovidethecorrectlevelofprotection,
pleaseconsultanauthorizedRaymarinedealeror
asuitablyqualiedprofessionalmarineelectrician.
Implementation—directconnectiontobattery
•SeaTalk
ng®
powercablesmaybeconnected
directlytothevessel'sbattery,viaasuitablyrated
fuseorbreaker.
Cablesandconnections23