Building an EVC network
Requirements
The.EVC.system.is.a.distributed.system.with.the.
electronic.units.(nodes).located.all.around.the.boat..
The.EVC.nodes.are.the.Powertrain.Control.Unit.
(PCU).located.in.the.engine.room.and.the.Helm.
Control.Unit.(HCU).located.near.the.helm.station..
The.standard.bus.cable.connects.the.nodes.to.each.
other.and.forms.a.network..The.standard.bus.cable,.
Y-connectors.and.extension.cables.are.used.for.this.
purpose.
The.nodes.must.be.conneced.and.the.network.must.
be.designed.in.such.a.way.that.no.branches.will.be.
formed..Longer.branches.(max..0.5.m/1.6.ft).may.
generate.communication.disturbances.in.the.EVC.
bus.cable..
Figure.A.above.illustrates.a.correctly.designed.net-
work.including.three.helm.stations..Figure.B.gives.an.
example.of.an.incorrect.network.with.long.branches.
Fig..B
PCU
HCU
HCU
HCU
This.is.avoided.by.always.connecting.the.longer.
cable.on.the.Y-connector.
directly.to.the.node.(PCU.
or.HCU).without.using.any.extension.cable.
IMPORTANT!.Note.that.the.Y-connector.always.
is.connected.directly.to.a.node.without.use.of.
any.extension.cable.
Important
Part.No.
Connection.to..
PCU.or.HCU
IMPORTANT!.Never.use.any.kind.of.grease.in.
the.EVC.connectors.
IMPORTANT!.Never.cut.or.modifiy.the.Volvo.
Penta.EVC.cable.harnesses..For.extra.power.
supply.use.the.Volvo.Penta.relay.for.accessories..
Refer.to.the.
Relay for external accessories
.
section.
Fig..A
PCU
HCU
HCU
HCU
33
EVC-C.
Installation.procedure,.general
Summary of Contents for EVC EC -C
Page 1: ...EVCEC C Electronic Vessel Control D4 D6 D9 D12 D16 Installation 1 1 B E ...
Page 2: ......
Page 135: ...Notes 135 ...
Page 136: ... References to Service Bulletins Group No Date Concerns 136 ...
Page 138: ...7745547 English 09 2007 ...