Raymarine Rotary Drive User manual

Distributed by

Any reference to Raytheon or

RTN in this manual should be

interpreted as Raymarine.

The names Raytheon and RTN

are owned by the

Raytheon Company.

Rotary Drive

Installation Guide

Drives covered:

M81135 Type 1 Rotary Drive 12 V

M81136 Type 2 Rotary Drive 12 V

M81137 Type 2 Rotary Drive 24 V

Document number: 81174-3

March 2001

2 Rotary Drive - Installation Guide

Important information

Safety notices

WARNING: Product installation

Thisequipmentmustbeinstalledandoperatedinaccordance

withtheinstructionscontainedinthishandbook.Failuretodoso

couldresultinpoorproductperformance,personalinjuryand/

ordamagetoyourboat.

Because correctperformance of the boat’ssteering is critical for

safety,weSTRONGLYRECOMMENDthatanAuthorized

RaymarineServiceRepresentativefits thisproduct.

WARNING: Navigation aid

Althoughwehavedesignedthisproducttobe accurateand

reliable,many factorscan affectits performance. Asaresult,it

should onlybeusedasanaidto navigationandshouldnever

replacecommonsenseandnavigationaljudgement.Always

maintainapermanentwatchsoyou canrespondtosituationsas

theydevelop.

EMC conformance

All Raymarine equipment and accessories aredesigned tothe best

industrystandardsfor use in the recreational marine environment.

The design and manufacture of Raymarine equipment and

accessories conform totheappropriate Electromagnetic

Compatibility(EMC)standards,butcorrectinstallationisrequiredto

ensure that performance is not compromised.

Handbook information

To the bestof our knowledge, the information in this handbook was

correct when it went to press. However, Raymarine cannot accept

liabilityforanyinaccuraciesoromissionsitmaycontain.Inaddition,

ourpolicyofcontinuousproductimprovementmaychange

specifications withoutnotice. Asaresult, Raymarine cannot accept

liabilityfor any differences between the product and the handbook.

©RaymarineLtd2001.

Rotary Drive - Installation Guide 3

Introduction

Product description

Welcometothe installationguideforthe Raymarine rotarydrive.

This product is intended tooperate the boat’s steering mechanism as

part ofa Raymarine autopilot system. It is designedfor steering

systemsthatcanbedrivenfromthehelmpositionthroughachainand

sprocket(for example: cable androdsteering systems).

The outstanding design of the Raymarine rotary driveunit provides

smooth,powerfulautopilot-controlledsteeringwith quietoperation.

The mainparts ofthe drive are:

• a rugged electric motor, that drives a precision epicyclic gearbox

viaa high tensiledrive belt

• anelectromagneticclutch thattransmitshigh torque loads

without slipping

Figure 1: Main parts of the rotary drive

Contents

Thisguidecontains:

1Product specifications page 4

2Installation instructions page 5

3Maintenance information page 15

D5082-1

Clutch cable

Motor cables

Mounting foot

Drive shaft

Motor, gearbox

and clutch assembly

4 Rotary Drive - Installation Guide

Specifications

Drive dimensions

Figure 2: Drive dimensions

Drive specifications

Table 1: Drive specifications

Performance

(at nominal voltage)

Type 1 (T1)

M81135 (12 V)

Type 2 (T2)

M81136 (12 V)

M81137 (24 V)

Maximum boat

displacement

10,000 kg

(22,000 lb)

20,000 kg

(44,000 lb)

Peak output torque 20 Nm

(180 lb.in)

34 Nm

(300 lb.in)

Maximum shaft speed 33 rpm 33 rpm

Recommended hardover

to hardover time (no load)

10 sec 10 sec

Power consumption

(typical average)

24-48 W 60-84 W (12 V)

72-120 W (24 V)

274 mm (10.8 in)

195 mm

(7.7 in)

256 mm (10 in)20 mm (0.8 in)

184 mm

(7.2 in) 60 mm

(2.4 in)

60 mm

(2.4 in)

D5087-1

2 slots to accept

12 mm (0.5 in) bolts

Rotary Drive - Installation Guide 5

Installation instructions

Parts required

To install thisdrive you will need:

•Partssupplied:

•rotarydrive

•mountingfoot

•spacing shims (x3)

•Additional parts:

•suitable securing bolts andlock washers/lock nuts (see

page 9)

•suitable sprockets and grubscrews for drive andsteering

system(see page 9)

•thread-lockingcompound

•suitable drive chain (see page 9)

•suitable cable and electrical connectors for the drive motor

andclutch (seepage 13)

Note:Makesureyouhaveobtainedtheseadditionalpartsbeforeyou

startinstallation.

Other information (applies to Types 1 and 2)

protected for use in engine compartments

CE approvals - conforms to:

89/336/EC (EMC), EN60945:1997

94/25/EC (RCD), EN28846:1993

Table 1: Drive specifications (contd)

6 Rotary Drive - Installation Guide

Installation steps

WARNING: Electrical safety

Make sure you have switched off thepower supply before you

start installingthis product.

Followthesestepsto installyourrotarydriveunit:

1. EMC installation guidelines

All Raymarine equipment and accessories aredesigned tothe best

industrystandardsfor use in the recreational marine environment.

Theirdesignandmanufacture conformstothe appropriate

Electromagnetic Compatibility(EMC) standards,butcorrect

installation is required to ensure that performance is not

compromised.Although every effort hasbeen taken to ensure that

they willperform under all conditions, it isimportant to understand

whatfactorscould affectthe operationoftheproduct.

TheguidelinesgivenheredescribetheconditionsforoptimumEMC

performance, butit is recognized that it may not be possible to meet

all of these conditions in all situations. To ensure the bestpossible

conditionsfor EMC performance withinthe constraintsimposedby

any location, always ensure the maximum separation possible

between different items of electrical equipment.

For optimumEMC performance, itis recommendedthat wherever

possible:

•Raymarine equipment and cables connected toit are:

1Consult the EMC installation guidelines. page 6

2Mount the drive. page 8

3Connect to the course computer. page 13

4Complete the post-installation check. page 15

Rotary Drive - Installation Guide 7

•Atleast3 ft(1 m)from anyequipmenttransmittingorcables

carryingradiosignalse.g. VHFradios,cablesand antennas.

In the case ofSSB radios, the distance should beincreased to

7ft(2m).

•More than7 ft(2 m)fromthepath ofa radarbeam. A radar

beam can normally be assumed to spread 20 degrees above

andbelow the radiatingelement.

•Theequipmentissuppliedfrom a separatebattery from that used

forenginestart. Voltagedropsbelow10 V,andstartermotor

transients,cancausetheequipment toreset.Thiswill notdamage

theequipment,butmay cause thelossof some informationand

maychangethe operatingmode.

•Raymarine specified cablesare used. Cutting andrejoining these

cables can compromiseEMC performance andmustbe avoided

unless doing so is detailed in the installation manual.

•Ifasuppressionferriteisattachedtoacable,thisferriteshouldnot

beremoved.Iftheferriteneeds tobe removed during installation

it must be reassembled in the same position.

Suppression ferrites

The following illustration shows typicalcablesuppression ferrites

usedwithRaymarineequipment.Alwaysusethe ferritessuppliedby

Raymarine.Thisproducthasferritesmountedinternally.

Figure 3: Typical suppression ferrites

Connections to other equipment

If your Raymarine equipment is to be connected to other equipment

usingacablenotsuppliedbyRaymarine,asuppressionferriteMUST

always be attached to the cable near tothe Raymarine unit.

D3548-2

8 Rotary Drive - Installation Guide

2. Mounting the drive

Mountingthedriveinvolvesfourmainsteps:

•securingthe driveto the boat

•connectingthe drive to thesteering system

•ensuring correctsprocket alignment and chain tension

•completing a steering check

Securing the drive

Mounting location

Before you secure the drive to your boat, you must first check the

suitability of the mounting location.

CAUTION:

Consulttheboatmanufacturerifyouhaveanydoubtaboutthe

strengthorsuitabilityofthemountinglocation.

•Structuralstrength:

•This drive produces a considerable amount of force, soyou

must mount it on a solid structure (i.e. a substantial frame

member) in the boat.In some cases you mayneed to build a

special frame to mount the drive unit.

•Topreventexcessnoiseandvibration,donot attach this drive

to any structuresthat supportcabins.

•Drive orientation:

•The drive canbe mounted on a vertical or horizontal surface.

•If necessary, you can rotate the mounting foot through 90

degreesto providea more convenientmountingposition(as

shownin Figure 7). To dothis: remove the four screws

securing the mountingfootto the drive unit, rotate the

mounting foot, then replacethe screws.

•Additionally,thedrivemayfaceeitherwayasyoucancorrect

thesteeringdirectionby reversingthe polarity of themotor

connections at the course computer (see Figure 8).

•Generalposition:

•Referto the EMCinstallationguidelines(page 6)

•Make sure the drive will be accessible for future servicing.

Rotary Drive - Installation Guide 9

•Environment:

•This drive is not waterproof, so youshould mount it in adry

location,clearofany bilge water.

Mounting bolts

Attachthemountingfoot withtwostainlesssteelM12(1/2 inch) bolts

andlocknuts/lockwashers.

Note:Before finally tighteningthe boltsyou must check sprocket

alignment(see page 12)andchaintension(seepage 12).

Note:Always mountthe drive assecurelyaspossible to make sure it

performs reliably and the chain remainscorrectly aligned.

Connecting to the steering system

The rotary drive isconnected to the steering system by achain drive

betweena sprocketonthe drive and a sprocketon theboat’ssteering

shaft.

Note:Most steeringgear manufacturers supply specialautopilot

drive attachments, andmany includethis asstandard. Contact your

steering gear manufacturerformore information.

When you have checked with the steering gear manufacturer about

how andwhere youcan attach theautopilot chainto the boat’s

steeringsystem,youneed to:

•determine the sprocketand chainsizes

•attach andalign the sprockets and chain

•tensionthe chain correctly

Determining the sprocket and chain sizes

Chain size

Recommended chainsize: standard3/8 inch pitch.

Sprocket sizes

To determine the sprocket sizes required at the steering shaft and

rotary drive:

•countthenumberoftimesthesteeringshaftturnswhenyoumove

therudderfrom hardover tohardover

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