Simrad Robertson AP9 Mk3 Instruction Manual

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INSTRUCTION MANUAL

Robertson AP9 Mk3

Autopilot

20169223

Page 2

Simrad Robertson AS Telephone: +47 51 46 20 00 Nyåskaien Telefax: +47 51 46 20 01 P.O. Box 55 N-4379 Egersund, Norway

NOTE!

Simrad Robertson AS makes every effort to ensure that the information contained within this document is correct. However, our equipment is continuously being improved and updated, so we cannot assume liability for any errors which may occur.

The information contained within this document remains the sole property of Simrad Robertson AS. No part of this document may be copied or reproduced in any form or by any means, and the information contained within is not to be passed on to a third party, without the prior written consent of Simrad Robertson AS.

Warning

The equipment to which this manual applies must only be used for the purpose for which it was designed. Improper use or maintenance may cause damage to the equipment or injury to personnel. The user must be familiar with the contents of the appropriate manuals before attempting to operate or work on the equipment.

Simrad Robertson AS disclaims any responsibility for damage or injury caused by improper installation, use or maintenance of the equipment.

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Instruction Manual

20169223D I

Instruction Manual

The manual is intended as a reference guide for operating and correctly installing the AP9 Mk3 Autopilot.

Great care has been paid to simplify operation and set-up. However, an autopilot is a complex electronic syste m; it is affected by sea conditions, speed of the vessel, hull shape and size.

Please take time to read this manual to get a thorough understanding of the operation and system components and their relationship to a complete autopilot system.

Other documentation materials that is provided with your system include a warranty card. This must be filled in by the authorized dealer that performed the installation and mailed in to activate the warranty.

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Robertson AP9 Mk3 Autopilot

II 20169223D

Document revisions

Documentation

department

Hardware/Software

design

Project/Product

Management

Rev Date Sign Date Sign Date Sign

– 10.04.96

N.G.

10.04.96

G.K.

10.04.96

Th.H.

A 30.05.96

N.G.

30.05.96

G.K.

30.05.96

Th.H.

B 12.07.96

N.G.

12.07.96

T.J.

12.07.96

Th.H.

C 3.9.99

N.G.

3.9.99

T.J.

3.9.99

Th.H.

D 07.11.00

N.G.

07.11.00

T.J.

07.11.00

T.R.

Document history

Rev. – First edition Rev. A Updated table of contents and references throughout the manual Rev. B Minor corrections in table page 1-6 and fig. 1-5. New dimensional

drawing of control unit, fig. 4.1. Section 5: Due to modified PCBs the instructions for ferrite core mounting are omitted. New component layout and set-up procedure for Dual Analogue Board included. Section 8: Updated circuit diagrams included. Section 9: Certificate of Type Approval included.

Rev. C New layout. Section 2 and 5 revised according to new software version

V1R3. Diagrams updated. Dimensional drawing of RF Standard Transmission link included. D9X Bus cable connection included. Index and distributor list included.

Rev. C has not been released.

Rev. D Updated according to software version V1R4.

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Instruction Manual

20169223D III

TABLE OF CONTENTS

1 INTRODUCTION .........................................................................................................1-1

1.1 General .........................................................................................................1-1

1.2 MK3 System Layout............................................................................................1-1

1.3 Options available with the standard system ..................................................1-1

1.4 AP9 MK3 Standard System, On-Off Valves....................................................1-3

1.5 AP9 MK3 Standard System, Dual analogue output ......................................1-4

1.6 AP9 MK3 with analogue thruster control.......................................................1-5

1.7 Combinations of Heading Sensors...................................................................1-6

GYRO COMPASS................................................................................................1-6

FLUXGATE COMPASS......................................................................................1-8

1.8 Dual Station .........................................................................................................1-9

SERIAL LINES.....................................................................................................1-9

1.9 Connection of steering levers..........................................................................1-11

1.10 Rudder Angle Indicators .................................................................................1-12

1.11 Special Applications.........................................................................................1-13

2 OPERATION .........................................................................................................2-1

2.1 General .........................................................................................................2-1

2.2 Front Panel .........................................................................................................2-1

2.3 Mode selection.....................................................................................................2-2

HELMSMAN (Power ON).................................................................................2-2

AUTOPILOT........................................................................................................2-2

NAV. MODE........................................................................................................2-2

OFF........................................................................................................................2-2

ALARM ................................................................................................................2-3

Thruster/rudder parameters.............................................................................2-3

2.4 Parameter setting ................................................................................................2-3

General..................................................................................................................2-3

Switch ON............................................................................................................2-4

HELMSMAN.......................................................................................................2-5

AUTOPILOT........................................................................................................2-5

INCREASE- and DECREASE-buttons.............................................................2-5

ILLUM ..................................................................................................................2-5

COMPASS SELECT ............................................................................................2-6

RUDDER ..............................................................................................................2-6

WEATHER...........................................................................................................2-7

COUNTER RUDDER..........................................................................................2-8

INFO .....................................................................................................................2-9

2.5 Course selection ................................................................................................2-15

2.6 Navigational steering.......................................................................................2-15

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IV 20169223D

General................................................................................................................2-15

Steering by XTE to waypoint...........................................................................2-16

Priority mode (APB sentence).........................................................................2-18

Ecdis mode ( APB sentence)............................................................................2-19

Remote Control .................................................................................................2-19

AP9 MK3 Dual Station.....................................................................................2-20

F200-40 Remote Control...................................................................................2-21

S9 Steering Lever (NFU) ..................................................................................2-22

FOLLOW-UP Steering Levers.........................................................................2-23

2.7 Fault Warnings..................................................................................................2-25

HEADING SENSOR WARNINGS.................................................................2-25

OTHER FAULT WARNINGS.........................................................................2-28

3 DESIGN AND THEORY OF OPERATION..............................................................3-1

3.1 General system description...............................................................................3-1

3.2 AP9 MK3 Control Unit.......................................................................................3-2

3.3 CD109 Course Detector......................................................................................3-4

CD109 Course Detector Principle.....................................................................3-4

3.4 Course Handling.................................................................................................3-4

3.5 RF14XU Rudder Feedback Unit........................................................................3-6

3.6 D90 Series Distribution Unit .............................................................................3-7

POWER SUPPLY BOARD.................................................................................3-7

INTERCONNECTION BOARD........................................................................3-8

THRUSTER INTERFACE BOARD...................................................................3-9

SOLID STATE BOARD ....................................................................................3-10

DUAL ANALOGUE PCB ................................................................................3-13

3.7 F200-40 Remote Control...................................................................................3-15

3.8 FU91/92 Follow-Up Lever ..............................................................................3-16

4 TECHNICAL SPECIFICATIONS ...............................................................................4-1

4.1 AP9 MK3 Control Unit.......................................................................................4-1

4.2 AP9 MK3 Gyro Interface Board........................................................................4-2

4.3 CD109 Course Detector......................................................................................4-2

4.4 RFC35R Rate Compass.......................................................................................4-3

4.5 RFC35NS Fluxgate Compass.............................................................................4-4

4.6 RFC35N NMEA Compass..................................................................................4-4

4.7 Distribution Unit.................................................................................................4-5

4.8 RF14XU Rudder Feedback Unit........................................................................4-7

4.9 RF Standard Transmission Link .......................................................................4-8

4.10 S9 Steering Lever.................................................................................................4-8

4.11 FU91 Steering Lever............................................................................................4-9

4.12 S35 Steering Lever.............................................................................................4-10

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4.13 F1/2 Remote Control........................................................................................4-11

4.14 F200-40 Remote Control...................................................................................4-11

4.15 RI9 Rudder Angle Indicator............................................................................4-12

4.16 IP protection ...................................................................................................4-13

4.17 Specification of messages.................................................................................4-14

CTS steering.......................................................................................................4-14

Bearing steering.................................................................................................4-14

Priority (mixed) steering..................................................................................4-14

Speed correction signal (VTG) ........................................................................4-14

5 INSTALLATION .........................................................................................................5-1

5.1 Unpacking and handling...................................................................................5-1

5.2 General .........................................................................................................5-1

5.3 Control Unit.........................................................................................................5-1

Connector assembly............................................................................................5-2

Screen termination..............................................................................................5-3

5.4 Heading sensors..................................................................................................5-4

General..................................................................................................................5-4

Magnetic compass...............................................................................................5-4

Gyro Compass.....................................................................................................5-7

RFC35NS Fluxgate Compass...........................................................................5-10

RFC35N NMEA Compass................................................................................5-12

5.5 D90/D91/D92/D93/D99 Distribution Unit.................................................5-12

Mounting............................................................................................................5-13

Electrical connections.......................................................................................5-13

Adjustments.......................................................................................................5-15

5.6 RF14XU Rudder Feedback Unit......................................................................5-15

Mechanical mounting.......................................................................................5-15

Electrical installation ........................................................................................5-16

Scaling of rudder angle....................................................................................5-17

Final check..........................................................................................................5-19

5.7 Optional equipment..........................................................................................5-19

AP9 MK3 Dual Station.....................................................................................5-19

5.8 Mode selection (External mode selector).......................................................5-21

F200-40 and Mode Selection............................................................................5-22

Complete Mode Selections ..............................................................................5-22

5.9 F200-40 Remote Control...................................................................................5-23

5.10 S9 Steering Lever...............................................................................................5-23

Mounting............................................................................................................5-23

Electrical connection.........................................................................................5-24

Function..............................................................................................................5-24

5.11 FU9X Follow up Steering Lever......................................................................5-26

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Mounting............................................................................................................5-26

Electrical connection.........................................................................................5-26

5.12 S35 connection to D9X......................................................................................5-27

S35 alternative connection...............................................................................5-27

5.13 RI9 Rudder Angle Indicator............................................................................5-28

5.14 PANORAMA Mk2 Rudder Angle Indicator ................................................5-28

Installation .........................................................................................................5-28

5.15 Analogue ±10V or 4-20mA control signals...................................................5-29

5.16 Connection to Navigational Receiver ............................................................5-31

5.17 Start-Up and commissioning...........................................................................5-32

Power ON...........................................................................................................5-32

Rudder Feedback Unit Adjustments..............................................................5-32

5.18 Selection of parameter settings .......................................................................5-33

Information and Debug Loops........................................................................5-33

5.19 Dockside Alignment/test................................................................................5-49

General................................................................................................................5-49

RF14XU Feedback unit (ON-OFF valves)......................................................5-49

Rudder Angle Indicators .................................................................................5-50

Analogue signal, Rudder & Thruster.............................................................5-50

Deflection test (Rudder or azimuth thruster propulsion)...........................5-52

Tunnel Thruster function.................................................................................5-57

Gyro Compass selection...................................................................................5-58

Magnetic Compass (CD109) adjustments .....................................................5-60

FOLLOW-UP Levers ........................................................................................5-61

Dual Station Configuration .............................................................................5-61

Mode selectors...................................................................................................5-61

5.20 Sea Trial ...................................................................................................5-62

RFC35NS Fluxgate Compass calibration and alignment............................5-64

RFC35N NMEA and RFC35R Compass calibration and alignment..........5-65

On course steering ............................................................................................5-66

Minimum rudder function ..............................................................................5-66

Course Changes.................................................................................................5-67

Save Parameters ................................................................................................5-69

Navigational Steering test................................................................................5-71

Special feedback arrangement ........................................................................5-72

6 TROUBLE SHOOTING................................................................................................6-1

6.1 Fault warnings.....................................................................................................6-1

6.2 CD109 COURSE DETECTOR............................................................................6-4

6.3 FLUXGATE COMPASS......................................................................................6-4

6.4 MALFUNCTION OF THE D90-91-92..............................................................6-4

6.5 MALFUNCTION OF THE D93/D94 ...............................................................6-5

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6.6 THRUSTER INTERFACE PCB..........................................................................6-5

7 SPARE PARTS .........................................................................................................7-1

7.1 AP9 MK3 Control Unit.......................................................................................7-1

7.2 Distribution Unit.................................................................................................7-1

7.3 CD109 Course Detector......................................................................................7-3

7.4 RF14XU Rudder Feedback Unit........................................................................7-4

7.5 RF Standard Transmission link.........................................................................7-5

7.6 F200-40 Remote Control.....................................................................................7-6

7.7 S9 Steering Lever.................................................................................................7-7

7.8 FU91 Steering Lever............................................................................................7-7

7.9 S35 NFU Steering Lever.....................................................................................7-7

8 Drawings ........................................................................................................................8-1

9 Index ...............................................................................................................................9-1

10 Appendix ...................................................................................................................10-1

Approvals Sales and service worldwide (000929)

TABLE OF FIGURES

FIG. 1-1 AP9 MK3 SYSTEM LAYOUT..................................................................... 1-2

IG. 1-4 THRUSTER CONTROL................................................................................ 1-5

IG. 1-5 HEADING SENSORS .................................................................................. 1-7

IG. 1-6 SERIAL LINE CONNECTIONS..................................................................... 1-9

IG. 1-7 DUAL STATION SYSTEM ......................................................................... 1-10

IG. 1-8 NFU/FU LEVERS................................................................................... 1-11

IG. 1-9 RUDDER ANGLE INDICATORS................................................................ 1-12

IG. 1-10 SPECIAL APPLICA T IONS, EXAMPLE 1................................................... 1-13

IG. 1-11 SPECIAL APPLICA T IONS, EXAMPLE 2................................................... 1-14

IG. 1-12 SPECIAL APPLICA T ION, EXAMPLE 3..................................................... 1-15

IG. 2-1 AP9 MK3 FRONT PANEL......................................................................... 2-1

IG. 2-2 RUDDER SETTINGS.................................................................................... 2-7

IG. 3-1 AUTOPILOT PRINCIPLE DIAGRAM............................................................ 3-1

IG. 3-2 PROCESSOR CONTROLLED AUTOPILOT.................................................... 3-2

IG. 3-3 AP9 MK3 ELECTRONIC BOARDS............................................................. 3-3

IG. 3-4 COURSE DETECTOR PRINCIPLE ................................................................ 3-4

IG. 3-5 AP9 MK3 COURSE HANDLING............................................................... 3-5

IG. 3-6 RF14XU PRINCIPLE.................................................................................. 3-6

IG. 3-7 D9X PCBS ................................................................................................ 3-7

IG. 3-8 POWER SUPPLY PCB - SIMPLIFIED DIAGRAM ..........................................3-8

IG. 3-9 INTERCONNECTION PCB - SIMPLIFIED DIAGRAM...................................3-8

IG. 3-10 THRUSTER INTERFACE PCB - SIMPLIFIED DIAGRAM ............................ 3-9

IG. 3-11 SOLID STATE PCB - SIMPLIFIED DIAGRAM.......................................... 3-10

IG. 3-12 SOLID STATE PCB - CONNECTION OF LIMIT SWITCHES.......................3-12

IG. 3-13 SOLID STATE PCB - CONNECTION OF SOLENOIDS...............................3-12

IG. 3-14 DUAL ANALOGUE PCB - SIMPLIFIED DIAGRAM................................. 3-14

IG. 3-15 F200-40 SIMPLIFIED DIAGRAM ............................................................ 3-15

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FIG. 3-16 FU91/92 SIMPLIFIED DIAGRAM .......................................................... 3-16

IG. 4-1 AP9 MK3 CONTROL UNIT, DIMENSIONS.............................................. 4-1

IG. 4-2 CD109 COURSE DETECTOR, DIMENSIONS .............................................. 4-2

IG. 4-3 RFC35R RATE COMPASS, DIMENSIONS................................................. 4-3

IG. 4-4 D9X DISTRIBUTION UNIT, DIMENSIONS................................................. 4-6

IG. 4-5 RF14XU RUDDER FEEDBACK UNIT DIMENSIONS .................................. 4-7

IG. 4-6 RF STANDARD TRANSMISSION LINK - DIMENSIONS............................... 4-8

IG. 4-7 S9 STEERING LEVER - DIMENSIONS......................................................... 4-8

IG. 4-8 FU91 STEERING LEVER - DIMENSIONS.................................................... 4-9

IG. 4-9 S35 STEERING LEVER - DIMENSIONS..................................................... 4-10

IG. 4-10 F1/2 REMOTE CONTROL - DIMENSIONS............................................. 4-11

IG. 4-11 F200-40 REMOTE CONTROL DIMENSIONS ........................................... 4-11

IG. 4-12 RI9 RUDDER ANGLE INDICATOR - DIMENSIONS............................... 4-12

IG. 5-1 CONTROL UNIT - PANEL MOUNT............................................................. 5-1

IG. 5-2 CONTROL UNIT - BRACKET MOUNTING................................................... 5-2

IG. 5-3 CONNECTOR ASSEMBLE ........................................................................... 5-2

IG. 5-4 CONTROL UNIT - CONNECTOR MOUNTING............................................. 5-3

IG. 5-5 SERIAL LINE CONNECTIONS..................................................................... 5-4

IG. 5-6 CD109 COURSE DETECTOR MOUNTING.................................................. 5-6

IG. 5-7 SYNCHRO SIGNAL CONNECTION .............................................................5-8

IG. 5-8 STEP SIGNAL CONNECTION...................................................................... 5-8

IG. 5-9 STEP SIGNAL, ALTERNATIVE CONNECTION ............................................. 5-8

IG. 5-10 SINE/COSINE CONNECTION...................................................................5-9

IG. 5-11 SERIAL LINE CONNECTION..................................................................... 5-9

IG. 5-12 RGC12 SERIAL LINE CONNECTION ....................................................... 5-9

IG. 5-13 RFC35 MOUNTING.............................................................................. 5-10

IG. 5-14 RFC35NS WIRING TO AP9 MK3........................................................5-11

IG. 5-15 RFC35N NMEA COMPASS WIRING TO AP9 MK3............................ 5-12

IG. 5-16 BUS CABLE (P/N 23602857) CONNECTION........................................ 5-14

IG. 5-17 AP9 MK3 / D93 (DUAL ANALOGUE PCB) INTERCONNECTION...... 5-15

IG. 5-18 RF14XU - MOUNTING......................................................................... 5-16

IG. 5-19 SCREEN TERMINATION......................................................................... 5-17

IG. 5-20 RF14XU INTERNAL WIRING................................................................ 5-18

IG. 5-21 DUAL STATION WIRING DIAGRAM....................................................... 5-20

IG. 5-22 MODE SELECTOR CONNECTION........................................................... 5-21

IG. 5-23 F200-40 AS MODE SELECTOR .............................................................. 5-22

IG. 5-24 COMPLETE MODE SELECTION............................................................... 5-22

IG. 5-25 F200 REMOTE CONTROL, CONNECTION............................................. 5-23

IG. 5-26 S9 STEERING LEVER, BULKHEAD MOUNTING ..................................... 5-23

IG. 5-27 S9 STEERING LEVER, PANEL MOUNTING............................................. 5-24

IG. 5-28 S9 STEERING LEVER, INTERNAL WIRING............................................. 5-24

IG. 5-29 PRIORITY NFU CONTROL BY S9 DIRECTLY TO VALVES....................... 5-24

IG. 5-30 NON-PRIORITY NFU CONTROL BY S9, NO VALVE LOAD TO S9..........5-25

IG. 5-31 FU9X STEERING LEVER, BULKHEAD MOUNTING................................ 5-26

IG. 5-32 FU9X CONNECTION TO D9X............................................................... 5-26

IG. 5-33 S35 AND F1/2 CONNECTION TO D9X ................................................... 5-27

IG. 5-34 S35 AND F1/2 ALTERNATIVE CONNECTION TO AP9 MK3................ 5-27

IG. 5-35 RI9 CONNECTION................................................................................. 5-28

IG. 5-36 PANORAMA CONNECTION................................................................... 5-29

IG. 5-37 AP9MK3 /THRUSTER INTERCONNECTION........................................ 5-30

IG. 5-38 NAVIGATIONAL RECEIVER CONNECTION............................................ 5-31

IG. 5-39 INFO LOOP 1..........................................................................................5-34

IG. 5-40 INFO LOOP 2.........................................................................................5-39

IG. 5-41 “HIDDEN” BUTTON LOCATION............................................................ 5-44

IG. 5-42 RF14XU INTERNAL WIRING ............................................................... 5-49

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20169223D IX

FIG. 5-43 D9X DUAL ANALOGUE BOARD, COMPONENT LAYOUT (REV. - C ). 5-53 F

IG. 5-44 D9X DUAL ANALOGUE BOARD, COMPONENT LAYOUT (REV. D - ).. 5-54

IG. 5-45 D9X SOLID STATE BOARD, COMPONENT LAYOUT.............................. 5-55

IG. 5-46 D9X THRUSTER INTERFACE BOARD, COMPONENT LAYOUT............... 5-56

IG. 5-47 GYRO INTERFACE BOARD, SWITCHES .................................................. 5-58

IG. 5-48 RUDDER/COUNTER RUDDER - COURSE RELATIONSHIP .....................5-66

IG. 5-49 SPECIAL FEEDBACK ARRANGEMENT.................................................... 5-72

IG. 7-1 AP9 MK3 CONTROL UNIT, SPARE PARTS.............................................. 7-2

IG. 7-2 CD109 - SPARE PARTS.............................................................................. 7-3

IG. 7-3 RF14XU - SPARE PARTS........................................................................... 7-4

IG. 7-4 RF STANDARD TRANSMISSION LINK....................................................... 7-5

IG. 7-5 F200-40 COMPONENT REFERENCE.......................................................... 7-6

IG. 8-1 J1 - INPUT/OUTPUT SIGNAL REFERENCES............................................... 8-2

IG. 8-2 J2 - INPUT/OUTPUT SIGNAL REFERENCES............................................... 8-3

IG. 8-3 J3 - INPUT/OUTPUT SIGNAL REFERENCES............................................... 8-4

IG. 8-4 J4 - INPUT/OUTPUT SIGNAL REFERENCES............................................... 8-5

IG. 8-5 J5 - INPUT/OUTPUT SIGNAL REFERENCES............................................... 8-6

IG. 8-6 SCREEN TERMINATION ............................................................................ 8-7

IG. 8-7 D9X/S SERIES DISTRIBUTION UNITS (OPTIONAL VERSION)..................8-8

IG. 8-8 FU9X - CIRCUIT DIAGRAM (N3-360308C)............................................ 8-9

IG. 8-9 D9X POWER SUPPLY - CIRCUIT DIAGRAM (DRW. NO. N3-012812G)8-10

IG. 8-10 D9X INTERCONNECTION BOARD – CIRCUIT DIAGRAM

(DRW. NO. N3-012813B)............................................................................ 8-11

IG. 8-11 D9X SOLID STATE BOARD, UNIVERSAL TYPE – CIRCUIT DIAGRAM

DRW. NO. N1-012815D.............................................................................. 8-12

IG. 8-12 D9X DUAL ANALOGUE BOARD – CIRCUIT DIAGRAM

(DRW. NO. N1-012816E)............................................................................ 8-13

IG. 8-13 D9X THRUSTER INTERFACE BOARD – CIRCUIT DIAGRAM

(DRW. NO. N1-012818C) ........................................................................... 8-14

XTERNAL CABLING DIAGRAM..................................................DRW. NO. 3-017111

XTERNAL WIRING DIAGRAM....................................................DRW. NO. 1-017115

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Page 13

Introduction

20169223D 1-1

1 INTRODUCTION

1.1 General

To day Simrad manufacture a complete range of autopilots for all types of vessels, from leisure boats up to advanced steering systems for merchant marine vessels. Our factory for these products – branded Robertson – is located in Egersund, on the south-west coast of Norway. The company's involvement in autopilots began in 1953 with equipment for the North Sea fishing fleet.

The AP9 MK3 autopilot described in this document is based on predecessor, the AP9 MkII. The major changes are on the hardware to comply with IMO resolution 694 (17) and the Marine Directive (Wheelmark). The hardware changes are compatible with the AP9 MkII.

1.2 MK3 System Layout

The complete AP9 MK3 system layout is shown in Fig. 1-1 A number of configurations can be made from the complete system

layout, and certain standard systems are shown in separate figures. The relationship between control signals, mode signals and the

different versions of distribution unit are shown in the standard system drawings.

The combinations of heading sensors are shown in Fig. 1-5.

1.3 Options available with the standard system

The AP9 MK3 system has a series of options that can be specified, allowing the autopilot system to be configured to suit virtually any particular vessel.

Optional equipment:

• Dual station

This is a second control unit for remote control of the main station functions

• Non Follow Up (NFU) steering lever with mode selector and lock

mechanism

• Follow up (FU) steering lever with mode selection

• Rudder angle indicators

• Watch alarm

• Thruster control/second parameter set; i.e. the ability to control

either a thruster or both the rudder and thruster simultaneously. This option requires a special interface board in the Distribution Unit.

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Robertson AP9 MK3 Autopilot

1-2 20169223D

For operation, technical specifications, installation and spare parts, see the respective sections of this manual.

Fig. 1-1

AP9 MK3 System layout

Page 15

Introduction

20169223D 1-3

1.4 AP9 MK3 Standard System, On-Off Valves

Ref. Fig. 1-2. The standard AP9 MK3 system consist of the following units:

• AP9 MK3 Control Unit P/N 20169199

Optional Gyro interface PCB P/N 20168316

• CD109 Magnetic Course Detector

(with tripod holder) P/N 20120861

• RF14XU Feedback Unit (with transm. link) P/N 22501647

• D9X Distribution Units:

Version D90 (19-40V DC, 3A solenoids) P/N 20125001

(Extra S.S.B. P/N 20125043)

Version D91 (110V DC, 1A solenoids) P/N 20125407

(Extra S.S.B. P/N 20125423)

Version D92 (110/220V AC, 1A solenoids) P/N 20125704

(Extra S.S.B. P/N 20125720)

Note that the standard mains supply is 24V DC.

If AC mains is used, the system must also include an AC Power Adapter (Not supplied by Simrad Robertson AS)

Where the system shall operate two sets of solenoid valves, one extra Solid State PCB (S.S.B.) must be mounted in the D9X Distribution Unit (see above).

Interface to navigational receiver is incorporated.

Fig. 1-2

Standard system with ON-OFF

valves

AP9MKII AUTOPILOT

NAV.RECEIVER

AP9 MK3

MAGNETIC COMPASS

CD109

GYRO-COMPASS

D9X

DISTRIBUTION

(D90/91/92)

ADAPTER

24V DC MAINS

24V DC ALARM

"ON-OFF""ON-OFF"

TO INDICATORS

(VOLTAGE)

RF14XU

RUDDER

TRANSMISSION LINK

SOL.

VALVE

PUMP 1

SOL.

VALVE

PUMP 2

AUTOPILOT F.B.

FOR TWO PUMPS,

ADD EXTRA

SOLID STATE PCB.

110/220V AC

50/60Hz

(FREQUENCY)

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Robertson AP9 MK3 Autopilot

1-4 20169223D

1.5 AP9 MK3 Standard System, Dual analogue output

The dual analogue system consist of the following units (Ref. Fig. 1-3.):

• AP9 MK3 Control Unit P/N 20169199

• Gyro Interface Board (Optional) P/N 20168316

• CD109 Magnetic Course Detector P/N 20120861

(with tripod holder)

• D93 Distribution Unit: P/N 20126009

Provides two galvanic isolated ±10V (adjustable) or 4-20mA output signals

Note ! No autopilot feedback unit is required.

It is recommended to use a separate mode selector to provide changeover (c/o) signals to the respective steering gear electronic units. Th e following functions can be included:

A: MANUAL - AUTO B: MANUAL - PORT - STBD - BOTH

(Function to be specified when ordering)

Fig. 1-3

Standard system, ±10V

Dual Analogue

AP9MKII

AUTO PILOT

STEERING

GEAR

EL. 1

STEERING

GEAR

EL. 2

RUDDER RUDDER

FEEDBA C K FEEDBA C K

EXT. MODE SELECTOR

(OPTIONAL)

D9X

DISTRIBUTION UNIT

D93

POWER

ADAPTER

110/220V AC

50/60Hz

24V DC MAINS

24V DC ALARM

NAV. RECEIVER

MAGNETIC COMPASS

AP9 MK3

GYRO-COMPASS

CD109

T.B.

C/O

+/-10V

ANALOG

+/-10V

ANALOG

MODE

NOT ROBERTSO N

SUPPLY

Page 17

Introduction

20169223D 1-5

1.6 AP9 MK3 with analogue thruster control

Ref. Fig. 1-4. The system consists of the following units:

• AP9 MK3 Control Unit P/N 20169199

Optional Gyro Interface Board P/N 20168316

• CD109 Magnetic Course Detector

(with tripod holder) P/N 20120861

• D9X Distribution Unit P/N 20126306

(Includes S.S.B.(s) or Dual Analogue PCB P/N as per D9X depending on steering gear interface)

• Thruster Interface PCB P/N 20126017

(Replaces Interconnection PCB P/N 20125027 in D9X Distribution Unit)

• Thruster switch (RUDDER - THRUSTER) P/N 20168605

• RF14XU Feedback Unit P/N 22501647

(When connected to solenoid valves)

AP9M KII

AUTOPILOT

MAGNETIC COMPASS

AP9 MK3

NAV. RECEIVER

THRUSTER SWITCH

GYRO COMPASS

D9X

DISTRIBUTION

UNIT

FEED-

BACK

STEERING

GEAR

EL.

NOTE:

STEERING SYSTEM EITHER ON-OFF OR ANALOGUE. FOR ANALOGUE, NO FEEDBACK IS REQUIRED FOR AUT OPILOT .

THR.

INT. PCB

CD109

MODE

+/-10V ANALOG

NOTE

24VDC MAINS

Fig. 1-4

Thruster control

Page 18

Robertson AP9 MK3 Autopilot

1-6 20169223D

1.7 Combinations of Heading Sensors

Ref. Fig. 1-5. The AP9 MK3 Control Unit is designed to accept several types of

heading sensors. The sensors can be divided in three groups:

1. Gyro Compass

2. Fluxgate Compass (Recommended as monitor compass only)

3. Magnetic Compass (Recommended as monitor compass only)

GYRO COMPASS

To interface to SYNCHRO, GYRO EXCITED, A/P EXCITED or STEP type gyro, the AP9 MK3 Control Unit must be equipped with the Gyro Interface Board P/N 20168316.

Signal type Option al ha rdware

Synchro 11,8V l-l 400Hz Gyro Interface PCB Synchro 20-115V l-l 50-60Hz, 400Hz Gyro Interface PCB Step 6 step/degree Gyro Interface PCB Sin/cos Not required Serial Not required

Note ! Two SYNCHRO or two STEP signals can not be connected at the same

time. When using two gyrocompasses, one gyro must provide SYNCHRO signal and the other gyro must provide STEP signal.

When using gyro with serial signal, no Gyro Interface Board is required.

Notice that dual station system communication can not be made when UART or NMEA serial line is used.

The Robertson RGC gyros can be connected according to the following table:

Direct connection RGC Interface connection

RGC10 Synchro Serial, sin/cos, 6 step/degree RGC11 RS422 Tokimec spes. Serial, sin/cos, 6 step/degree RGC50 Synchro Serial, sin/cos, 6 step/degree RGC12 Serial Serial, sin/cos, 6 step/degree

For details of gyro selection see page 5-58.

Page 19

Introduction

20169223D 1-7

SKR-82 GYRO

GYRO-COMPA SS

RGC GYRO

RGC

INT. FACE

ROBERTSON

RFC35NS

SYNCHRO

MAGN.

GYRO

INTERFACE

BOARD

SYNCHRO

1:1

90:1

360:1

STEP

6 STEP/DEGREE

SERIAL

MAGN.

STEP

SIN/COS

(FLUXGATE)

AP9 MK3

CONTROL UNIT

SERIAL UART

SERIAL

UART

SIN/COS

GYRO-COMPA SS

SIN/

COS

1:1 SYNCHRO

110V 400Hz

(ONLY RGC10

AND RGC50)

MAGNETIC COMPASS

CD109

MAGNETIC COMPASS

CD109

SYNCHRO

NOTE:

THE GYRO INTERFACE BOARD CAN NOT ACCEPT TWO SYNCHRO OR TWO STEP SIGNALS SIMULTANEOUSLY, ONLY ONE OF EACH.

STEP

SERIAL TOKIM EC

NMEA

Fig. 1-5

Heading Sensors

Page 20

Robertson AP9 MK3 Autopilot

1-8 20169223D

RGC Gyro with RGC Signal Interface Unit

When using an RGC gyro together with the RGC Signal Interface, four options of connections are possible:

1. UART serial line, 20mA. (Identical to the SKR 82 serial line)

2. NMEA serial signal

3. Fluxgate sin/cos signal, identical to the Robertson fluxgate signal.

4. Step signal, 24V – 6 step/degree. When using the fluxgate signal, select FLUXGATE compass. When using step signal, select STEP SIGNAL. See page 2-6 for compass selection.

RGC12 Gyrocompass

The RGC12 RS422 Tokimec special protocol or NMEA can be connected directly to the AP9 MK3 without any Gyro Interface PCB.

FLUXGATE COMPASS

The AP9 MK3 is designed to accept fluxgate compass sin/cos signals, using 2.5V DC as reference.

The Robertson type of Fluxgate Compasses, such as the RFC35NS therefore interfaces directly to the AP9 MK3.

Note ! A fluxgate compass should only be used as a Monitor Compass.

Gyrocompass is always recommended as Main Compass.

For details, refer to page 5-10.

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Introduction

20169223D 1-9

1.8 Dual Station

See Fig. 1-7 The AP9 MK3 Control Unit can also be used as a remote station,

communicating with the main station by serial lines. The dual station system is designed to enable individual connections

of NFU levers, F200-40 remote controls and mode selectors. This makes it possible to select mode and change parameters from the two stations individually. FU levers can only be connected to the main Control Unit via D9X.

Note ! Change of parameters except the selection of compass on one unit, will

change the same parameters on the other unit.

Parameter 2 option (Thruster function) can be selected individually on the two units, but adjustment of parameters on one unit will automatically change the same parameters on the other unit.

When a F200-40 Remote Control is connected, a mode selector must have an "OFF" position to allow proper function of the F200-40.

SERIAL LINES

The AP9 MK3 has several serial line connections. As shown in Fig. 1-6, two input lines are in parallel, the "COMM.

LINE" and the "SERIAL HDG. DATA". This excludes the interface to serial heading data when a dual station is used.

3 6

8 6

1 2

OUT

SERIAL HEADING DATA

COMM. LINE (DUAL ST./RMP)

HEADING NMEA (HDT/HDM)

NAV. RECEIVER (NMEA)

AP9 MK3

CHANNEL A

CHANNEL B

NOTE: In Dual Station configuration, serial heading data

can not be connected to J3, 1-2.

OUT

Fig. 1-6

Serial line connections

Page 22

Robertson AP9 MK3 Autopilot

1-10 20169223D

AP9MKII AUTOPILOT

AP9MKII A UTOPILOT

NFU LEVER

AP9 MK3

REMOTE STATION

EXT. MODE SELECTOR

(OPTION)

F200-40

SEE N O TE

COMMUNICATION LI NES

D9X

DISTRIBUTIO N

UNIT

F200-40

SEE N O TE

EXT. MODE SELECTOR

(OPTION)

NFU LEVER

FU9X

FOLLOW -UP

LEVER

AP9 MK3

MAIN STATION

PWR

NOTE:

WHEN A F200-40 IS CONNECTED, T HE MODE SELECTO R(S) MUST INCLUDE AN "OFF" POSITION.

Fig. 1-7

Dual Station System

Page 23

Introduction

20169223D 1-11

1.9 Connection of steering levers

As shown on Fig. 1-8., a number of NFU levers and a single FU lever can be connected to the AP9 MK3 autopilot system.

The S9 NFU lever combines an "IN - OUT" function with the normal PORT - STBD operation. The "IN - OUT" function can be combined with the external mode-selection of the autopilot and this automatically brings the autopilot to NFU mode when the S9 lever is pulled out. The mode change has two alternatives:

A. Sets the autopilot to NFU mode when the S9 is pulled out. NFU

mode will remain when S9 is pushed in again. AUTOMATIC or NAV to be selected on the control unit. For this alternative refer to page 5-24.

B. Sets the autopilot to NFU-mode when the S9 is pulled out. Mode

will change back to AUTOMATIC or NAV when the S9 lever is pushed in again. To obtain this function, the closing contacts if S9 no. A5-A6 is used to control the mode. Refer to page 5-21.

An unlimited number of S9’s can be connected in parallel.

Note ! It is also possible to add several FU-levers to an AP9 MK3 system by using

the FUA9X Follow-Up Amplifier instead of the D9X Distribution Unit.

Note ! NFU levers should not be used for analogue steering(

10V output).

AP9MKII AUTOPILOT

AP9 MK3

S9 S9

(NFU)

FU9X

D9X

DISTRIBUTION

UNIT

ONE OFF

Fig. 1-8

NFU/FU Levers

Page 24

Robertson AP9 MK3 Autopilot

1-12 20169223D

1.10 Rudder Angle Indicators

RI9

RUDDER

PANORAMA

NO.1

NO.2

NO.3

NO.4

24V DC

INDICATOR

SUPPLY

24V DC

INDICATOR

SUPPLY

FEEDBACK

TO AUTOPILOT

RF14XU

+/-45/60/70/90 DEGREE

FREQ.

3400Hz +/-20Hz/DEGREE

RI9

Fig. 1-9

Rudder Angle Indicators

Fig. 1-9 shows a typical Rudder Angle configuration. Number and type of indicators varies from ship to ship.

The indicators must be of the "voltage" type, such as Panorama, RI40 and RI9. Installation instructions are supplied with the indicators.

Page 25

Introduction

20169223D 1-13

1.11 Special Applications

Example I:

AP9MKII

AUTOPILOT

THR.

INT. PCB

SOL.

STATE

PCB

AP9 MK3

THRUSTER SELECTOR

SWICH

D9X

DISTRIBUTION

UNIT

RF14XU

RUDDER

SOLENOID

VALVES

MODE

+/-10V ANALOG

(VIA THR.INT.)

C/O SIGNAL

SOLENOID (ON/OFF) SIGNALS

THRUSTER

ELECTRONICS

Fig. 1-10

Special applications, Example 1

In this example the autopilot is interfaced both to a conventional rudder system, using ON - OFF solenoid valves, and an azimuthing bow thruster with ±10V as control signal.

The AP9 MK3 can provide different parameters f or the thruster and the rudder control respectively, and the combination is determined under the INFO loop 2 (Ref. page 2-9).

The combination shown above requires a Thruster Interface PCB to provide the single ±10V analogue output, and a Thruster Selector Switch to provide the change-over (C/O) signal to the thruster combined with the mode control to the autopilot. The Thruster Interface PCB, part no. 20126017 is mounted in the Distribution Unit, and the solid state PCB must be specified according to the switching voltage. (Ref. Standard System).

Page 26

Robertson AP9 MK3 Autopilot

1-14 20169223D

Example 2:

AP9MKII AUTOPILOT

AP9 MK3

THRUSTER SWITCH

SERVO

POT.

D9X

DISTRIBUTION

UNIT

U/X

CONV.

THR.

INT.

PCB

SOL.

ST.

PCB

C/O SIGNAL

ON-OFF SIG NAL

MODE

FEEDBACK

+/-10V SIGN.

FREQ. (X)

(U)

SOLENOID VALVES

THRUSTER

ELECTRONICS

Fig. 1-11

Special applications, Example 2

The AP9 MK3 autopilot is also designed to operate a tunnel bow thruster, with possibility to set deadband and thruster power in the second parameter set.

The control signal is the ±10V analogue, generated via the Thruster Interface PCB.

The shown configuration also includes a main propulsion azimuth thruster, operated by ordinary ON-OFF solenoid valves.

A special feedback arrangement is required to replace the standard RF14XU. It consists of a servo potentiometer and a voltage-tofrequency converter, to facilitate the installation of the mechanical and electrical part of the feedback system. Contact Simrad for further information

Page 27

Introduction

20169223D 1-15

Example 3:

NOTE:

THE D94 CONTAINS ONE THRUSTER INTERFACE BOARD AND ONE DUAL ANALOG PCB.

AP9MKII AUTOPIL OT

AP9 MK3

THRUSTER SELECTOR

(SPECIAL)

D94

DISTRIBUTION

UNIT

DUAL

ANALOG

PCB

THR.

INT. PCB

BOW

THRUSTE R

AFT THRUSTERS

+/-10V

C/O SIGNAL C/O SIGNAL

+/-10V

MODE

C/O SIGNAL

THRUSTER

ELECTRONICS

THRUSTER

ELECTRONICS

THRUSTER

ELECTRONICS

Fig. 1-12

Special application, Example 3

The AP9 MK3 autopilot system can provide three galvanic isolated ±10V outputs and be configured as shown in Fig. 1-12.

In this example the Distribution Unit is equipped with one Thruster Interface board to control the bow thruster, and one Dual Analogue PCB to control the two aft thrusters.

The Thruster Selector Switch is normally custom-made for each individual system, and provides the change-over signals for the thrusters, and the mode for the autopilot.

No Feedback Unit is required! Thruster Selector Positions:

• MANUAL

• AUTO AFT (Aft Thruster)

• AUTO BOW (Bow Thruster)

FEATURES: First parameter set for synchronized operation of the

aft thrusters.

Second parameter set for the operation of the bow

thruster.

Page 28

Robertson AP9 MK3 Autopilot

1-16 20169223D

This page is intentionally left blank.

Page 29

Operation

20169223D 2-1

2 OPERATION

* * * * * * *

NAV

HELMS-

MAN

AUTO COMPASS

SELECT

ILLUM

COUNTER

RUDDER

INFO

WEATHER

OFF

INCREASE

DECREASE

PORT

STBD

AUTOPILOT

AP9 MK3

ALARM RESET

Mode selection Parameter setting Course selection

Fig. 2-1

AP9 MK3 Front panel

2.1 General

AP9 MK3 autopilot is operated by means of keypad push buttons on the front panel. The buttons are back lighted, activated buttons being brighter than the others.

Course selection is made by the rotary Course Selector Knob. Course adjustments in steps of one degree can be achieved by the port or starboard push buttons.

The front panel has three LCD displays, referred to as the information display (left side), bargraph display (upper right) and the course display. An alarm buzzer and an alarm reset button is also on the front panel.

A few simple operations like pressing a button and/or turning the Course Selector Knob is required in ordinary use of the autopilot. All other instructions and data required for the operation are stored in the autopilot upon delivery.

2.2 Front Panel

The front panel is divided into three sections: Mode selection, Parameter setting and Course selection (Fig. 2-1).

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Robertson AP9 MK3 Autopilot

2-2 20169223D

2.3 Mode selection

Together with the OFF-button and the 3 mode buttons, this section also contains an alarm buzzer and ALARM RESET-button.

HELMSMAN (Power ON)

The HELMSMAN button serves two purposes. It switches on the autopilot and selects manual steering mode. In this mode the course display gives a digital read-out of compass heading, while the vessel can be steered manually by helm or steering lever(s).

AUTOPILOT

The AUTOPILOT-mode is used under normal conditions when the boat is steered automatically on a pre-set course.

When the AUTOPILOT-button is pressed, the autopilot selects the current vessel heading as "course to steer".

Any difference between course to steer and the vessel's actual heading will then be shown as a bargraph in the bargraph display. One bar equals one degree.

The autopilot uses the activated heading sensor unit, selected from the COMPASS SELECT button to calculate the difference between course to steer and actual ships heading. Rudder command signals are then based on steering parameter settings.

Rudder commands are indicated by an arrow to left or right in the bargraph display depending upon which direction the autopilot commands the rudder to move. These arrows do not appear when the autopilot output signal is analogue voltage. The “Debug” rudder angle may show a random number as no rudder feedback is connected.

For the ±10V analogue control signal, a separate rudder control system moves the rudder to match the rudder angle command.

NAV. MODE

NAV.-mode is used when a navigation receiver is connected to the autopilot for automatic "waypoint" steering.

When the NAV-mode is selected, the AP9 MK3 automatically monitors the signals from the navigation system. If the signals are absent or in a wrong data format, an alarm will be given to alert the operator. See page 2-15: Navigational Steering.

OFF

The autopilot is switched off by pressing the OFF-button for 2 seconds, during which time the alarm will sound. The alarm ceases

Page 31

Operation

20169223D 2-3

when the AP9 MK3 is switched off. If the OFF-button is released before two seconds have elapsed, the autopilot will continue to operate as before and the alarm signal is automatically reset.

Rudder commands will stop as long as the OFF-button is pressed. All pre-set parameters in the autopilot are stored while the unit is switched off.

ALARM

The acoustic alarm is reset by pressing the alarm reset button. Alarm messages shown on the information display are described on

page 2-25. Fault Warnings.

Thruster/rudder parameters

When the autopilot is connected to a thruster in addition to the rudder, a separate Thruster Switch will enable a second set of parameters to control the thruster. Whenever the Thruster Mode is selected, all parameters can be individually set for optimal performance from the thruster, while the parameters used for Rudder-steering are saved and resumed when the Thruster Switch is set to "RUDDER".

2.4 Parameter setting

Note ! When the "RUDDER" and "WEATHER" buttons are pressed

simultaneously, IDEAL parameters are recalled, provided the parameters have been stored earlier (during sea-trial). See installation section, page 5-

69.

General

The middle section of the AP9 MK3 control unit contains 8 push buttons and an information display. The display shows selected mode, deviation from set course, parameter settings and other user information. The text in the information display can be shown in one of four selectable languages: English, French, Spanish or Norwegian (see page 5-40).

When RUDDER, COUNTER RUDDER, WEATHER or ILLUM buttons are pressed, the display shows which button has been activated and to what level the value has been set by the number of bars as well as in plain figures. The displa y returns to normal readout, showing the selected mode one minute after the last press on one of the buttons.

The ability of the autopilot to steer a vessel is not only dependent upon the control logic used, but also the hull shape of the vessel, the steering gear and the weather conditions. The AP9 MK3 can be set up to steer almost any vessel. During normal day to day operation

Page 32

Robertson AP9 MK3 Autopilot

2-4 20169223D

RUDDER, COUNTER RUDDER and WEATHER can be easily adjusted from the front panel. In addition the autotrim can also be adjusted, but should be permanently set during initial sea trials. The autotrim parameter is accessed using the INFO button.

Switch ON

The autopilot is switched on by pushing the HELMSMAN button (The switch can be sensed by the finger!)

The autopilot will acknowledge with a short audible "blip" and confirms initialisation by showing:

SOFTWARE: mk3 V1R4

INITIATING

SOFTWARE: mk3 V1R4

CHECKING COMPASS

If the serial compass switch is ON the text ‘CHECKING COMPASS’ is displayed while type of serial compass is detected.

If serial compass data is not connected the alarm text ‘SERIAL COMP FAIL’ is displayed and serial compass is removed from sensor setup.

If serial data has wrong polarity or has UART format, then the text ‘Uart OK’ or ‘Chg HiLo’ (Change Hi-Lo) is displayed.

After a few seconds Helmsman will be shown in the information display:

* * * * * * *

HELMSMAN

If the autopilot is connected to a gyrocompass where the gyro heading needs to be set, the display will show at switch on:

GYROADJUST PRESS INC / DEC

Press the INCREASE or DECREASE button until the autopilot display shows the same heading as the gyrocompass.

Then press the HELMSMAN button and the display will show:

* * * * * * *

HELMSMAN

Note ! If another language is preselected, the display may show:

TIMONEL (Spanish), MANUEL (French) or RORMANN (Norwegian)

To change the language, do the following:

Page 33

Operation

20169223D 2-5

• Press INFO and keep it pressed.

• Press WEATHER

• Release WEATHER

• Release INFO.

The INFO display will show one of the following: ENGLISH, ESPANOL (Spanish), FRANCAIS (French) or NORSK

(Norwegian) The language can now be selected and stored by pressing either

INCREASE or DECREASE. The INFO display will fall back to HELMSMAN approx. 1 minute after the last operation of INCREASE/ DECREASE, or immediately by pressing HELMSMAN.

HELMSMAN

This is the "stand-by" mode for the autopilot. When this mode is selected, the autopilot is passive and manual rudder operation, either by steering wheel or Non Follow Up (NFU) levers, is made.

The Heading Display will show the actual course with resolution of one tenth of a degree, operating as a heading repeater. The Bargraph Display will show one single vertical line, indicating zero heading error.

AUTOPILOT

When clear of obstacles and in open waters, steer the vessel on course and press the AUTOPILOT button.

The display will now show:

* * * * * * *

AUTOPILOT

and the autopilot will automatically keep the vessel on course.

INCREASE- and DECREASE-buttons

These buttons are used to alter various settings. Each time one button is pressed, the value shown on the information display, will increase or decrease by one unit. The value is also shown as a graphical bar. If the button is kept pressed for more than two seconds, the value will automatically count up or down until the button is released.

ILLUM

The ILLUM button is used to adjust the illumination of buttons and displays. .

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Robertson AP9 MK3 Autopilot

2-6 20169223D

• To adjust the illumination, first press the DIMMER button, than

the INCREASE or DECREASE button. In the information display a number and a bargraph represent the brightness level.

COMPASS SELECT

The autopilot is capable of reading two heading sensors simultaneously: Main (steering) compass and monitor (comp. difference) compass.

If only one compass is connected, this will always be the main compass. The autopilot shows the main compass heading in HELMSMAN-mode and selects this heading as set course in AUTOPILOT mode. The difference between the set course on the autopilot and the main compass heading is known as the off course deviation.

The autopilot monitors the off course deviation and if it exceeds the selected off course limit, an off course alarm will sound. (See page 536 for selection of off course limit).

If more than one compass is connected, one is selected as main compass and one as monitor compass. The autopilot now monitors the heading difference between the main compass and the monitor compass. The heading difference alarm is given when the differen ce exceeds the off course limit and thus the heading difference alarm also acts as an additional off-course alarm.

Press the COMPASS SELECT button once and the information display shows the selected main compass. By then pressing the INCREASE or DECREASE button another compass can be selected as main compass from one of the compasses connected to the autopilot.

Press the COMPASS SELECT button a second time and the information display shows the selected monitor compass. Another monitor compass can be selected (not the one selected as main compass) by using the INCREASE or DECREASE buttons. The monitor compass can also be switched off by the same buttons.

RUDDER

When the RUDDER button is pressed, the Information Display shows selected RUDDER value. The RUDDER value sets the ratio between rudder angle and heading error (p-factor).

Example: If RUDDER is set to 1.0 and there is a heading error of 2 degrees, the rudder angle will be 2 degrees. (Heading error x RUDDER value = rudder angle).

The correct RUDDER setting is dependent upon the size and speed of the vessel. The RUDDER value should increase with decreasing speed.

Page 35

Operation

20169223D 2-7

Examples of incorrect RUDDER settings:

Fig. 2-2

Rudder settings

A value which is too low gives relatively large and slow oscillations (s-ing) around set course, and several rudder commands are given in the same direction before the vessel is back on course.

A value which is too high will give quick and increasing oscillations (s-ing) around set course.

The correct setting of RUDDER will be approximately in the middle of the settings described in Fig. 2-2

Press RUDDER, thereafter INCREASE or DECREASE for required amount of rudder.

Range: 0.1 - 3.3. Recommended start value: 0.6 - 1.5.

WEATHER

The WEATHER setting determines the number of degrees the vessel may fall off the set course before any response is given to the rudder. In calm weather it should be set to OFF which means that theoretically the autopilot allows no deviation from set course. The WEATHER value should be increased with increasing sea state. This will cause the sensitivity to be decreased such that the vessel has to fall off course with the number of degrees selected by the Weather setting before a rudder command is given. The amount of rudder is calculated by the heading error exceeding the set limit, multiplied with the p-factor. This will prevent big rudder amounts and reduce rudder activity.

In conditions where active steering is required, (e.g. following sea condition), the value should be reduced.

Press WEATHER, thereafter INCREASE or DECREASE for required sensitivity.

Range: OFF - 8°. (OFF is max. sensitivity). Recommended start value: OFF - 3°.

Too little rudder

Too much rudder

Course to steer

Page 36

Robertson AP9 MK3 Autopilot

2-8 20169223D

COUNTER RUDDER

The COUNTER RUDDER serves two purposes, firstly to give a smooth transition to a new heading after a major course change has been made, and secondly to enable the autopilot to stabilize the vessel on a straight course. The steering characteristic of the autopilot is determined by the RUDDER and the COUNTER RUDDER adjustment.

The effect of the Counter Rudder is partly determined by the selected Turn Rate, hence tuning the Counter Rudder effect also involves the Rudder Control.

A too low value results in an overshoot past the new heading and it takes a long time before the new heading is stabilized.

A value that is too high results in an over correction followed by a small overshoot past the new heading, and the vessel then tends to oscillate around the new heading. A typically symptom here is an over active-rudder.

Range: 0 – 8.0 Recommended start value: 0.6

Page 37

Operation

20169223D 2-9

INFO

The INFO button is used to call up a number of parameters and oth er information.

The INFO loops can be entered in any autopilot mode. No change will be made unless the INCREASE or DECREASE button is pressed.

The parameters are divided in two loops, one for the often used parameters and one for seldom used parameters. The two loops are entered differently and Loop 2 is mainly for installation set-up.

For detailed description of functions, see page 5-33. Information and Debug loops.

INFO loop 1:

INFO loop 2:

• Rate of turn or Radius steering • Language

• Turn Rate/Radius • Deadband

• Rudder Limit • Minimum Rudder

• Off course • Serv. speed

• Autotrim • Speed sens.

- Nav. Filter *

• Minimum radius

- Nav. Gain *

• Thruster function

- Nav. Trim * - Only Thruster

• Gyro adjust **

- Only Rudder

• Comp. diff. ***

- Rudder + Thruster

- Thruster deadband

- Minimum thrust

• FU/A Scale

• Maximum rudder limit

• Navigational Mode

- Ecdis

- Priority

- XTE

- CTS

• 1/sec. out

- 5/sec out

• Software version/Runtime

* Only when Nav. Steering is selected. ** Only when step gyro or synchro is selected, not 1:1. *** Only when two compasses are connected. To escape from the INFO loops, press any mode or parameter button.

Note ! The INFO display will fall back to show the autopilot mode approximately 1

minute after the last entry of any parameter.

Page 38

Robertson AP9 MK3 Autopilot

2-10 20169223D

Operation, INFO loop 1

Press the INFO button. For adjustment of each parameter use INCREASE or DECREASE button.

IIIIIIIIIIIIIII AUTOTRIM 0.5

Press

INFO

III TURNRATE 40°/m

III RADIUS nm. 0.15

Press

RATE oT STEERING CHANGE? INC/DEC

RADIUS STEERING CHANGE? INC/DEC

Press

IIIIIIIIIIII OFFCOURSE. L 10°

IIIIIIIIIIIIIIIIIIIIIII RUDDER LIM. 15°

Press

Range: 1°/min - 360°/min.

Note: The range is limited by "min radius" val ue in INF O LOO P 2.

Recommended: 40°/min

Range: 0,01 nm - 10 nm

Note: The range is limited by "min radius" val ue in INF O LOO P 2.

Recommended: 0,1 nm

Press INC or DEC to alter between ROT and Radi us st eer ing .

This rudder limitation setting is only active during autosteering on straight courses, NOT course changes.

Range: 1° - 85° Recomme nd ed : 15°

Range: 3° - 35° Recomme nd ed : 10°

(First display rea dout depends on what has been selected by "Rate of turn (RATEoT) steering /Radius steering", see next parameter.)

Press

Range: OFF - 3,2 Recomme nd ed: 0,5

INFO

Page 39

Operation

20169223D 2-11

COMP. DIFF. 5° PRESS INC.

IIIIIIIIIIIIIII NAV. FILTER 1.1

IIIIIIIIIIIIIII NAV. GAIN 1.0

IIIIIIIIIIIIIII NAV. TRIM 180s

Press

INFO

Press

Only if NAV is selected and CTS is NOT selected

Range: 1. 1 - 2.5 Recommended: 1.1

Range: OFF - 3,2 Recommended: 1.0

Range: 100s - 1600s Recomme nded: 180s

Press INC to zero-set the relative difference between the two compasses. The a ct ual difference i s then show n in the di splay.

INFO

Press

Next press repeats the INFO loop 1

INFO loop 2

(For detailed description, see Sea Trial, page 5-62) To enter this loop, do as follows:

• Press the INFO button and keep it pressed

• Press and release WEATHER button

• Release the INFO button

The display will now show:

* * * * * * *

ENGLISH

This is the language parameter. Use INCREASE/DECREASE to select the required language. The different options are:

ENGLISH – FRANCAIS – ESPANOL – NORSK

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IIIIIIIIIIIIIII SERV. SP 18 Kn

Press

Determ i nes the de adband fo r t h e feedback loop (rudder hunting) and also the heading sensitivity of the autopilot.

Range: 0,2° - 3,4° Recomme nded: 0,6°

Range: OFF - 10° Recommended: OFF - 2°

Press

Range: 3 kn - 70 kn Recommended setting: Ship's cruising

speed.

Press

INFO

III MIN. RUDD 1.5

III DEADBAND 0.6

Sets the autopilot speed re fe r ence to the ship's service speed.

Determines the minimum amount of rudde r as first comm and.

IIIIIIIIIIIIIII SPEED SENS 0.33

Range: OFF - 1.92 Recomme nded: 0.36

INFO

This se tting scal es the amount of rudder for speed change (lower speed, more rudder!)

Press

IIIIIIIIIIIIIII MIN RADIUS 0.05

Range: 0.01 - 1.10 nm. Recomm e nd ed : Sh i p de pendent

INFO

This parameter limits the maximum allowed turnrate setting or the minimum allowed turn radius that can be set by the Rate of Turn or Radius steering, selected in Info loop 1. The setting also depends on the service speed of the vessel. The lower speed, the higher turn rate can be set.

THRUSTER FUNC. RUDDER+THRUST

IIIIIIIIII FU/A SCALE: 45°

Range: 45° - 60° - 70° - 90° Recommended: Set to relevant rudder

scale.

Determines the scaling of the follow up function.

IIIIIIIIII MAX RUDDLIM: 44°

Range: 26° - 90° Recommended: Appr. 5° le ss than

max rudder tr avel.

Sets the absolute maximum rudder deflection.

Press

INFO

Press

INFO

The thrus ter param eters only appear if J4, 11-13 "Thruster Ident" on the control unit are connected (via a switch). See separate de sc ription .

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Operation

20169223D 2-13

NAVMODE=PRIORITY CHANGE? INC/DEC

Range: Priority-XTE-CTS-ECDIS Recommended: Priority (unless

ECDIS is used)

Selects the Nav. mode function

Press

INFO

1/SEC OUT FREQ. CHANGE? INC/DEC

Range: 1/sec - 5/sec Recommended: Refer to equipment

to be interfaced.

Determines the NMEA output rate.

Press

INFO

OFFSET = XXX° FLUXGATE COMP

Only shown if signal is present on sin/co

input or at serial HDM input. Used when fluxgate compass is selected as steering compass.

Press

INFO

The next press repeates the loop, starting with language.

SW ver. mk3 V1R4 RUN: 2d 2h

Displays software version and runtime in days and hours when in automatic mode.

Press

INFO

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Thruster Function

THRUSTER FUNC. RUDDER+THRUST

Range: OFF - 32° Recommended: 5°

Press

INFO

III THRUST DB 5°

INFO

III MIN THRUST 25%

INFO

THRUSTER FUNC. ONLY T HRUSTER

INFO

III THRUST DB 5°

INFO

III MIN THRUST 25%

INFO

INC

DEC

THRUSTER FUNC. ONLY RUDDER

* PARAM SET 2 * HELMSMAN

INC

DEC

IIIIII FU/A SCALE: 45°

IIIIII MIN RADI U S 0.05

INC

DEC

Range: OFF - 10 0% Recommended: 25%

Range: OFF - 32° Recommended: 5°

Range: OFF - 100% Recommended: 25%

The thruster parameters only app ear if J4, 11-13 "Thruster Id ent" on the control unit are connected (via a swit ch).

Note:

Thruster deadba nd.

Min. amount of thrust.

Thruster deadband.

Min. amount of thrust.

The "Param set 2" will appear in the display af ter one minute or immediately when escaping the loop by pushing an ot he r button, e.g. Rudder.

See Parameter 2 option, page 5-31

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Operation

20169223D 2-15

2.5 Course selection

The course selector section on the autopilot consists of a bargraph display, a digital heading display, a course selector and two course adjustment buttons, PORT and STBD.

The bargraph display operates in two modes, AUTOPILOT and NAVIGATION-mode, displaying in degrees the difference between actual vessel heading and course to steer. On the display each "bar" is equal to one degree, and the range is 20 degrees to port and starboard. An arrow on each side indicates starboard and port rudder commands.

Note ! No arrows for analogue signal output.

In HELMSMAN mode the digital heading display gives a read-out of actual ships heading, while in AUTOPILOT and NAVIGATION modes the read-out is course to steer.

The Course Selector is used for major c ourse c ha nges in A UTOP ILOT mode. To activate the knob it must be pressed down and released. If the knob is not turned within 10 seconds, it has to be pressed again. Clockwise turns gives a starboard course change and vice versa. One revolution on the course selector knob is equal to a 60 degree course change.

The PORT and STBD push buttons are for minor course adjustments, pressed once gives a one degree course change in the appropriate direction.

These two buttons and the course selector are only active in AUTOPILOT mode.

Note ! When making course changes by the push buttons the TURNRATE

function is not activated.

2.6 Navigational steering

General

Navigational steering should be used in open waters only. Navigational steering is based upon signals taken from Loran C and

GPS Nav. receivers. The signals are called Cross Track Error (XTE) and Bearing waypoint-waypoint (BWW), termed course to steer (CTS).

When cross track steering is used, the information display gives a read-out of actual cross track error in thousandths of a nautical mile (.001). The XTE signal changes the set course to keep the vessel on track.

AP9 MK3 can operate in a (CTS) mode where the bearing to the waypoint is defined to be the course to steer by the autopilot. The information display gives bearing to waypoint, elapsed time since

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last update and the amount of course change. If a change of more than 10 degrees is commanded, the alarm will sound and the ALARM RESET button has to be pressed to acknowledge the course change. The plain CTS mode is rarely used today after the GPS has replaced the Transit system.

For receivers with NMEA 0183 format that outputs both the cross track error (XTE) and bearing waypoint-waypoint (BWW), e.g. an APB sentence, the autopilot can operate in the priority mode (also called mixed mode) utilizing both signals.

Note ! The Course Change knob and buttons are disabled when operating the

autopilot in NAV. mode.

Steering by XTE to waypoint

When the autopilot is using XTE, the set course is automatically adjusted in order to keep the vessel on a straight track between two waypoints. Satisfactory steering depends upon good reception conditions and correct adjustment of the autopilot.

During poor reception conditions, the receiver transmits an alarm warning which activates the alarm circuit in the autopilot. The set course reference is not updated until the reception conditions improve. See Fault Warnings on page 2-25.

Make the following check before using navigational steering:

1. Set the Nav. receiver to calculate the bearing from present position

to a waypoint.

2. Steer the vessel by hand on the calculated bearing and select

AUTOPILOT-mode.

3. Let the autopilot steer the vessel for a period of about 2 minutes to

settle on the new course.

4. Make a starboard course change of 5°, by pushing 5 times on

STBD button and check that a course track error is built up on the navigation receiver showing that the vessel is located to the right of the bearing line.

5. Repeat step 4 with a 10° course change to port and check that the

vessel moves to the opposite side of the bearing line.

When the autopilot is performing satisfactorily in AUTO-mode, use the following procedure:

1. Enter the desired bearing line(s) to the Nav. receiver using the

present position and the first waypoint or destination. Distance between waypoints should be of minimum 1 n.m. Otherwise there may not be sufficient time for the system to calculate the XTE, and for the autopilot to alter the course and bring the vessel onto the bearing line again.

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Operation

20169223D 2-17

2. Read the calculated bearing to waypoint from the Nav. receiver.

3. Set the course to the waypoint showed on the navigation receiver.

Before going to step 4, ensure that the XTE is within 0.1 n.m. to avoid a hazardous course change when selecting NAV-mode.

4. Select NAV-mode on the AP9 MK3. The autopilot now

automatically changes the set course to reduce the Cross Track Error (XTE) to zero. The information display shows the n umber of degrees the autopilot has changed the set course, and the XTE in 1/1000's of a nautical mile. Note that the display read-out will be delayed, depending upon the NAV. FILTER setting.

Note ! The accuracy of the autopilot depends on the accuracy of the GPS and it’s

output.

Example:

NAVIGATING

05 XTE = R0.021N

R indicates that the vessel is located to the right of the bearing line, and L indicates to the left of the bearing line. 05 is the number of degrees course change relative to initial set course. As the vessel approaches the bearing line, the correction value decreases and when the vessel is on track, the information display shows:

NAVIGATING

00 ON TRACK

5. As the vessel gets within the arrival circle set on the navigational

receiver, or as the vessel passes the perpendicular line to the waypoint, the receiver transmits a "data not valid" signal to the autopilot. An audible alarm will then activate and the course to steer will no longer be updated.

To proceed to the next waypoint, the procedure should be repeated from step 2 onwards.

Procedure:

• Reset the alarm on the autopilot and navigational receiver.

• Select "AUTOPILOT" mode on the autopilot.

• Use Course Change knob/buttons on the autopilot and to

set the new course given by the Nav. receiver.

• Press "NAV"

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Robertson AP9 MK3 Autopilot

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Priority mode (APB sentence)

NAV.RECEIVER

ACCEPT CHANGE Y:RESET N:AUTO

WAYPOINT 3

WAYPOINT 2

WAYPOINT 1

INFO DISPLAY

05°

BEARING LINE

XTE= R0.02NM

R RIGHT

L LEFT

RESET

ALARM

NAVIGATING

05 XTE = R0.021N

NAVIGATING

00 ON TRACK

Note ! The waypoint arrival warning will depend on the arrival zone setting on the

navigational receiver.

The AP9 MK3 uses bearing waypoint – waypoint as the initial heading reference. The XTE is used to update this heading reference in order to minimise the XTE.

When arrival circle for the next waypoint is reached, the ACCEPT CHANGE alarm will start.

If the turn is accepted by ALARM RESET, then the vessel is turned towards the bearing for the next waypoint. The internally values on RADIUS/RATE OF TURN is used for turning. When the vessel is within 35° of the bearing waypoint- waypoint, the internally nav. mode will change from CTS to XTE and the XTE is used to control the vessel along next leg.

If the turn is not accepted by ALARM RESET, the alarm is continuously on and the vessel proceeds on present course.

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Operation

20169223D 2-19

Ecdis mode ( APB sentence)

WAYPOINT 1

WAYPOINT 2

WAYPOINT 3

New heading = 70°

Heading =100°

INFO DISPLAY

NAVIGATING 00° ON TRACK

INFO DISPLAY

NAVIGATING

04° XTE =R0.010N

XTE

ALARM

INFO DISPLAY

GPS satellite

ALARM SOUND FOR 4 SECONDS

The AP9 Mk3 uses the bearing waypoint – waypoint as the initial heading reference. The XTE is used to update this heading reference in order to minimise the XTE.

When arrival circle for the next waypoint is reached, the alarm (sound only) will go on for 4 seconds and the turn will start immediately. This mode is best to use if ECDIS/ECS/PLOTTER is connected between GPS and AP9 Mk3, where the APB sent ence has bearing waypoint – waypoint and XTE calculated as tangents to radius arc. and distance to radius.

Note ! When using GPS only, and ECDIS mode is selected, the autopilot will

automatically turn to upcoming waypoints.

Remote Control

The different types of Remote Controls that can be connected to AP9 MK3, have different ways of operation, depending on the system configuration. When operating a dual station system, there is a slight difference in the operation of the remote controls if the system includes an external mode selector.

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AP9 MK3 Dual Station

Transfer of command from one unit to the other unit is made by pressing the HELMSMAN button on the respective control unit. Change of steering mode is made either on the control unit mode buttons or by a separate mode selector.

Mode control function may also be included in an NFU lever (S9 connected for mode control, see mode selection).

All parameters can be readjusted from both units.

Note ! Compass selection and selection of NAV-mode (XTE-CTS-PRIORITY-

ECDIS) can only be made from the main station.

Additional equipment can be connected as for the Main unit. The following description of operation for the optional equipment

also applies for the dual station configuration, when installed.

AP9 Mk3 REMOTE

MODE SELECTOR

FU91

AP9 Mk3 MAIN

MODE SELECTOR

FU91

PORT STBD

MODE

COURSE

F200

F200-40

PORT STBD

MODE

COURSE

F200

F200-40

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Operation

20169223D 2-21

F200-40 Remote Control

The F200-40 hand held remote control makes it possible to remotely control the AP9 MK3 autopilot.

The following control functions are obtainable:

• Display that shows operational mode and vessel heading or set

course like the course display on the control unit.

• Course selection by a rotary knob

• Course adjustments by push buttons

• Mode selection

• Manual steering by course selector knob (Follow-Up)

• Manual steering by push buttons (Non-Follow-Up)

In a dual station system, using one main and one remote control unit, it is possible to connect one F200-40 to each control unit and obtain individual control from each unit.

Note ! If a separate external mode selector is used, this must include an off position

to enable mode changes from the F200-40 Remote Control. Refer to page 5-

23.

F200-40 Functions

The table starts with the autopilot switched to HELMSMAN mode with 080° as heading.

PORT STBD

MODE

COURSE

F200

NFU steering by F200-40 PORT/ STBD push buttons.

Follow-Up steering by F200-40 Course Sele ctor button

* * * * * * *

AUTOPILOT

NON FOLLOW UP HELMSMAN

F200 FOLLOW UP HELMSMAN

AP9MKII Display Function F200-40 Display

F200-40 Mode button

Autosteering. Course changes can be made either by the F200-40 Course Selector, PORT and STBD buttons or, by the autopilot Course Sele ctor.

Vessel heading

Midship rudder

4°port rudder

32° stbd rudder

Automode 146° Course to steer

Press F200-40 Mode button one time

Press F200-40 Mode button a second time

Press F200-40 Mode button a third time

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S9 Steering Lever (NFU)

NFU (Non Follow Up) steering means the rudder will move for as long as the lever (tiller) is activated out from its spring-loaded centre position.

In addition to the ordinary PORT and STARBOARD movement, the S9 also has an IN-OUT movement. When the S9 lever is pushed to the IN position, it is physically locked and can not be moved to PORT or STARBOARD.

Activation is achieved by pulling out the lever. The lever is springloaded to the mid-position, and rudder commands are made by moving the lever to PORT or STARBOARD. Rudder movement will stop when the lever is released and returns to the mid-position.

The S9 is disabled when pushed IN. Several units may be connected in parallel. Connecting details are shown on page 5-24.

ALTERNATIVE 1

AUTO/FU - NFU When pulling out the lever, the autopilot mode will be set to NFU. PORT and STARBOARD commands can be made, but when the S9

lever is pushed back to locked position, the NFU mode is maintained and you have to select AUTO on the control unit.

ALTERNATIVE 2

AUTO - NFU - AUTO This alternative will change the mode from AUTO or NAV to NFU

shown in the INFO display as:

NON FOLLOW UP

HELMSMAN

when S9 lever is pulled out. When the S9 is pushed in again, the mode will change to AUTO, shown in the INFO display as AUTOPILOT (NAV must be entered on the control unit).

* * * * * * *

AUTOPILOT

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Operation

20169223D 2-23

ALTERNATIVE 3

When autopilot is in AUTO, course change can be made by the S9 by repeated operations of the lever to one side or the other side. Every operation will provide one degree course change, to PORT or STARBOARD dependent of direction of operation.

When the autopilot mode is set to HELMSMAN, the NFU lever will provide ordinary NFU operation.

Note ! All mode changes must be made on the control unit. As the S9 mode change

function is not activated on this alternative, any NFU lever can be used to obtain this function.

Special arrangements can be configured by using mode selector and change-over switch, see “mode selection”.

FOLLOW-UP Steering Levers

A follow-up lever features a dial (scale), graduated in degrees. This enables the operator to predetermine the required rudder movemen t simply by moving the follow-up lever to the required rudder angle. The rudder will move to and stop at the set angle.

Auto mode is then selected at the AP9 MK3 Control Unit after switching off the FU switch.

OPERATION

The FU91 FU lever is activated by pressing the push to take command (PTTC) button. When in "COMMAND", the button is lit and the autopilot INFO display will show:

FOLLOW UP

HELMSMAN

Rudder commands are made by setting the lever to the required rudder angle, whereafter the rudder will move to the commanded rudder angle and stop. The FU91 lever is turned off by pressing the PTTC button one more time. The light goes out and the autopilot mode is then selected at the control unit.

Note ! To obtain the proper mode selection from the FU lever, AN EXTERNAL

AUTOPILOT MODE SELECTOR MUST INCLUDE MODE “OFF” FUNCTION.

FU91 Lever

Dimmer

Push To Take Command button

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COMBINATION OF S9/FU91 LEVERS

A combined system of S9 (NFU) and FU91 (FU) may be configured as illustrated (simplified):

AP9 MK3

FU91

* * * * * * *

NAV

HELMS-

MAN

AUTO COM PASS

SELECT

ILLUM

COUNTER RUDDER

RUDDER

INFO

WEATHER

OFF

INCREASE

DECREASE

PORT STBD

AUTOPILOTAP9 MK3

ALARM RESET

OPERATION

The autopilot is used as previously described. Mode changes are made as normal. As an example the AP9 MK3 is in the AUTOPILOT mode.

TRANSFER TO NFU:

• Pull out the required S9 lever for activation and NFU

commands can be made.

Note ! When the manoeuvring is finished, push the S9 lever back to locked position

(IN).

TRANSFER TO FU:

• Push the PTTC button on the required FU91 to activate the

lever. RESUME AUTOPILOT MODE When finishing the operation by either the FU91 or the S9 (remember

to push back to locked position), automatic steering is resumed by pushing "AUTOPILOT" on the control unit.

If external mode switch is used in combination with the selection of NFU and FU levers, simply select the function marked on the switch.

Example:

AP9 MK3

S9 PORT S9 STBD

FU91 PORT

FU91 STBD

MODE SELECTOR

PTTC DISABLED PTTC DISABLED

* * * * * * *

NAV

HELMS-

MAN

AUTO COMPASS

SELECT

ILLUM

COUNTER

RUDDER

INFO

WEATHER

OFF

INCREASE

DECREASE

PORT STBD

AUTOPILOTAP9 MK3

ALARM RESET

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Operation

20169223D 2-25

2.7 Fault Warnings

A fault warning is given by an interrupted sound from the alarm buzzer. The INFO DISPLAY will show what type of alarm is present.

The audible alarm is cancelled by pressing the Alarm Reset button.

HEADING SENSOR WARNINGS

The AP9 MK3 autopilot normally operates with two heading sensors connected.

One, normally a gyrocompass, is selected as the MAIN COMPASS, while a magnetic compass normally is selected as the MONITOR compass. It is possible to select individually what compass shall be the MAIN COMPASS and what compass shall be the MONITOR compass.

Note ! Selection of compass can only be made in HELMSMAN Mode.

The types of heading sensors may be separated in two groups:

Group 1 (Gyro Interface Board not required):

• Serial line signals (NMEA, UART, TOKIMEC)

• RGC Gyro (Fluxgate or serial line signal)

• Magnetic Compass (CD109 sensor)

• Fluxgate Compass (Sin/cos signal)

The AP9 MK3 will automatically detect if any of these types of sensors are connected and selected either as main compass or monitor compass. If only one compass is connected, it will automatically be selected as the main compass. Monitor compass selection is disabled.

A signal failure will cause a compass alarm.

Group 2 (Gyro Interface Board required):

• SYNCHRO Signals (1:1 , 360:1 , 90:1)

• STEP Signals (6 step/degree)

The AP9 MK3 will detect if synchro or step signals are connected. A signal failure will cause a compass alarm.

Note ! No failure detect for synchro 90:1 or 360:1. A signal failure will, however,

be detected as an off-course or compass difference alarm.

The following alarms and fault codes may occur:

SERIAL COMP FAIL

CHECK COMPASS

An alarm condition is cancelled by pressing the ALARM RESET button. If the autopilot is in the AUTOMATIC mode, also press

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2-26 20169223D

HELMSMAN. This will automatically select the monitor compass as the MAIN compass.

MAGN. COMP 1 FAIL

PRESS ALARM

Cancel alarm/select compass as described above.

MAGN. COMP 2 FAIL

PRESS ALARM

Cancel alarm/select compass as described for MAGN. COMP 1 FAIL.

FLUXGATE FAIL

PRESS ALARM

Cancel alarm/select compass as described for MAGN. COMP 1 FAIL

SYNCHRO COMP FAIL

CHECK COMPASS

This alarm will only sound when the autopilot is in the Automatic mode and synchro 1:1 has been selected.

Cancel the alarm as described before.

STEP COMP FAIL

CHECK COMPASS

This failure occurs in Automatic mode if loss of any phase (S1, S2, S3) are detected. When a compass fail alarm is reset, the compass is removed from the internal sensor table. To get the compass into the sensor table it is necessary to switch AP9 Mk3 OFF and ON.

Cancel the alarm by pressing Alarm Reset button.

COMPASS SELECT

ONLY IN HELMSMAN

This warning will occur in the INFO display if COMPASS SELECT button is pressed when the pilot operates in the AUTOPILOT mode.

Select HELMSMAN mode and then press the COMPASS SELECT button

1st press

COMPASS

SELECT

MAIN COMPASS

- - - - - - - - - - - - -

This line may show one of the following:

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Operation

20169223D 2-27

• SERIAL COMP.

• SYNCHRO 1:1 GYRO

• SYNC 90:1 GYRO

• SYNC 360:1 GYRO

• STEPPER GYRO

• MAGN COMP 1

• MAGN COMP 2

• FLUXG COMP

The type of compass that will appear in the INFO display depends on the internal dip switch settings in the Control Unit.

For details, refer to the Installation section, page 5-58. To select another compass as MAIN Compass, press INCREASE or

DECREASE.

2nd press

MONITOR COMP.

- - - - - - - - - - - - -

COMPASS

SELECT

One of the same type of compasses listed as MAIN Compass may be displayed.

To select another MONITOR COMPASS, press INCREASE or DECREASE.

If a single compass is connected, no selection of compass can be made.

COMPASS SELECT

FAIL

No heading sensors are functioning (or connected). Press ALARM RESET to cancel the audible alarm. The INFO display

will now show:

COMPASS FAIL

USE HELMSMAN/NFU

Only the NFU and FU steering levers can be used as Autopilot mode is disabled.

For remote station only:

COMPASS SELECT

ONLY ON MAIN CONT.

This warning applies only for the remote station in a DUAL STATION system.

DECREASE

INC R E A S E

Press

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Compass selection can ONLY be made at the Main control unit, when in HELMSMAN mode.

Note ! After repair/reconnection of sensors, the autopilot must be switched OFF -

ON for master reset.

OTHER FAULT WARNINGS

The following warnings are given by the audible alarm, together with information in the INFO display:

OUT OF COURSE

RESET ALARM

This alarm will occur when course deviation is greater than the selected OFF COURSE LIMIT.

Cancel the alarm by pressing the ALARM RESET button. If required, the OFF COURSE LIMIT can be readjusted.(Press INFO

once, press INCREASE to adjust value).

COMP DIFF

RESET ALARM

Note ! This alarm appears only if two compasses are connected.

This alarm will appear if the difference between the MAIN compass and the MONITOR compass reading is more than the set value of the OFF COURSE LIMIT.

Normally the MAIN COMPASS is a gyro (True Heading) while the monitor compass is magnetic (Magnetic Heading). Deviation and Variation may cause the difference to exceed the pre-set OFF COURSE LIMIT.

Press the ALARM RESET to cancel the alarm. This will at the same time compensate for the present difference between the two compasses.

COMMUNICATION

FAILURE

Serial lines make all internal communication between the two stations in a DUAL STATION system. A failure in the communication is given by this warning.

RUDDER FEEDBACK

FAIL

This alarm shows that the autopilot does not read the Rudder Feedback Unit.

The AP9 MK3 has, however, a built-in simulated feedback signal that will substitute the feedback signal.

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Operation

20169223D 2-29

RUDD LIM STOP

AUTOPILOT

If the autopilot is restricted by a low rudder limit, this text will be displayed.

Press ALARM RESET

This will switch on the simulated feedback signal shown in the INFO display as a continuous flashing text:

* * * SIM * * *

SERVICE IS REQUIRED BY AN AUTHORIZED DEALER

Note ! In case rudder angle indicators are connected to the rudder feedback unit,

they may also be out of order.

NO RUDDER

RESPONSE

This alarm will appear if the rudder does not respond to a given rudder command.

Check that the steering gear is switched on and that any system change-over switches are set for autopilot steering.

The reason may also be related to a failure in the steering gear system or the autopilot drive signal switches (solid state PCB in the D9X unit).

NAVDATA NOT REC

FAILURE

No Navigational Steering can be made if this fault warning should appear.

Check that the nav. receiver is switched on and properly set to provide the NMEA signals:

Cross Track Steering (XTE): APA, APB. Course to Steer (CTS): BOD, BWC, BWW, BWR. Also check the autopilot nav. settings in INFO-loop 2.

NAVDATA INVALID

FAILURE

This fault warning indicates that the reception conditions are poor.

Note ! The same warning can also be given during Nav. mode operation of the

autopilot when a waypoint is reached. The given heading from the nav. receiver is then to be set on the autopilot in AUTO mode before switching back to Nav. steering (XTE).

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WRONG DATAFORMAT

CHECK NAVSETTING

This fault alarm indicates wrong data format.

WATCH ALARM

PRESS RESET

This warning will occur every four minute when a Watch Alarm unit is connected (Not supplied by Simrad Robertson any longer).

If the watch alarm should occur when a Watch Alarm Unit is not connected, use the following procedure to cancel the alarm:

• Enter INFO loop 2 (Press INFO and keep pressed, press

WEATHER, release WEATHER, release INFO)

• Step through the INFO loop 2 by pressing INFO until

SOFTWARE/RUNTIME is reached.

• Press DECREASE appr. 15 times and verify that days/hours

changes to 0 (zero).

• This will then have cancelled the Watch Alarm For further information refer to paragraph 6.1 Fault warnings.

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Design and theory of operation

20169223D 3-1

3 DESIGN AND THEORY OF OPERATION

3.1 General system description

An autopilot is an apparatus that controls the rudder of a vessel in order to maintain a selected heading. There are different design principles for such an apparatus, but they all basically operate as shown in Fig. 3-1. This diagram shows that the vessel's heading is supplied from the compass to a detector circuit. The detector will sense when the vessel is off course and to what side. The detected signal is amplified and directed to energize either the port or starboard solenoids, i.e. make the rudder move one way or the other.

COMPASS

DET AMP

FEEDBACK

UNIT

STBD. TRIGGER

PORT TRIGGER

SOLENOID

RUDDER

HEADING

RUDDER POSITION

Fig. 3-1

Autopilot principle diagram

In order to stop the rudder movement, a feedback signal is produced by the feedback unit. The feedback signal will be compared with the compass signal and when there is a balance between the two, the solenoid will be de-energized. The rudder has now been moved to a position that makes the vessel turn. This turn is picked up by the compass and causes a new unbalance between the feedback signal and the error signal which energizes the opposite solenoid. Now the rudder will start to move back towards the previous position, and the feedback signal will again cancel out the unbalance and de-energize the solenoid to stop the rudder.

By utilizing digital technology to perform the function of an autopilot, the typical block diagram will be slightly changed. Even so, the basic operation should be recognized on Fig. 3-2.

As we know, a microprocessor can only do what it has been programmed to. This is called software. The program can be either fixed or partly adjustable to adapt the microprocessor to the individual type of vessels.

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In Robertson terminology this is called "setting parameters", and it will determine the performance of the autopilot.

I/O

INTERFACE

DRIVER

GYRO

COMPASS

MAGNETIC

COMPASS

COURSE

SELECTOR

DISPLAY

RUDDER

FEEDBAC K

PROGRAM

CPU

KEYPAD

RUDDER

SOLENOID VALVES

Fig. 3-2

Processor controlled autopilot

3.2 AP9 MK3 Control Unit

The AP9 MK3 Control Unit is made of sea water resistant aluminium and has a polyester coating which gives good protection against environmental exposure.

The unit contains three electronic boards (See Fig. 3-3), which are th e Front Board, Display Board and the Interface Board.

The Front Board contains the micro computing circuitry, together with the electronics for the course selector. The alarm circuit is also included on this board.

The Display Board consists of the back lighting- and the display electronics.

All interface plugs for Heading Sensors, Distribution Unit, Navigational Receiver, Remote Controls etc. are mounted on the Interface Board.

The three boards are interconnected by plugs, and the interconnection is executed by mounting the boards into the control unit. (If the control unit is to be tested open with mains supplied, special cables are required).

If the control unit is to be connected to gyros other than the serial signal type, an optional AP9 MK3 Gyro Interface Board is required.

All connections to the autopilot are made through Amp CPC connectors to facilitate easy maintenance.

All parameter settings and operation of the autopilot are made using the push buttons on the AP9 MK3 Control Unit.

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Design and theory of operation

20169223D 3-3

AUTOPILOT

Plug

Synchro & Step Gyro

Magnetic Compass

Rudder Commands

Interface Board

Gyro Interf a ce Bo ar d

Display Board

Front Board

Key Board

Course Change Knob

PROM

MICROPR.

NAV

HELMS -

MAN

AUTO COMPASS

SELECT

ILLUM

COUNT ER

RUDDER

INFO

WEATHER

OFF

INCREASE

DECREASE PORT STBD

AUTOPILOTAP9 MK3

ALARM RESET

Fig. 3-3

AP9 MK3 Electronic boards

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3.3 CD109 Course Detector

CD109 is the magnetic compass sensor in moulded plastic. It is mounted to a vessel's magnetic compass to transfer the heading information to the control unit. It operates on the fluxgate-principle where the resultant of the compass magnetism and the magnetism excited in the coil by the autopilot, makes it possible to register the compass heading.

CD109 Course Detector Principle

The primary windings are excited by a pulsating signal. Dependent of the magnetism induced by the position of the compass card magnets (Heading), pulses of variable amplitude will be generated in the secondary sine and cosine windings. These pulses are filtered through the R/C network and amplified before entering the A/D converter.

Exitation

Digital HeadingC1

A/D

CONV.

2.5V (Ref.)

HEAD 2 (COS)

HEAD 1 (SIN)

Fig. 3-4

Course Detector principle

3.4 Course Handling

(Ref. Fig. 3-5). The AP9 MK3 may use different combinations of heading sensors

such as magnetic compass (CD109), Gyrocompass (serial line, synchro 1:1 and geared, step signal and fluxgate). The options are selected by the compass select (COMP.SELECT) switch SW1 and SW2 on the interface board.

One compass will thus provide steering signal (steering compass) while the other will provide compass difference alarm (monitor compass).

Course changes are made in three different ways:

1. By the course change knob when operating in AUTOPILOT mode

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Design and theory of operation

20169223D 3-5

2. By the PORT and STBD one-degree-course change-buttons, also

when operating in the AUTOPILOT mode

3. By navigation receiver in CTS or Mixed Nav. steering modes. During operation of the autopilot, only one compass (main compass

or steering compass) will provide ship's heading reference for auto steering. The other compass (monitor compass) is only used to compare the main compass heading and eventually trigger a COMPASS DIFFERENCE alarm. The setting of the limit is made by altering the OFF-COURSE LIMIT value.

COURSE

SELECT

NAV. OFFSET

COURSE

TO STEER

NAV. REG.

NAV. REC.

NAV. COURSE

XTE

CTS COURSE TO STEER

STEERING COMPASS

MONITOR

COMPASS

SHIP'S

COURSE

HEADING REF.

AUX. COURSE

DISPLAY COURSE

COURSE

ERROR

OFF COURSE

ALARM

COMPASS

DIFFERENCE

TO PID REGULATOR

MAN

AUTO NAV

AUTO

NAV

COMP. SE L ECT

COMP. SELECT

COURSE SELECTOR

NAV. REC.

Fig. 3-5

AP9 MK3 Course Handling

This means that even with one compass connected, the OFF-COURSE warning will still be active, but NO COMPASS DIFFERENCE will occur.

The COURSE ERROR signal for the PID regul ator is determined by the steering compass heading and the course selector/one-degree buttons.

When switching for NAV mode, the course selector and one-degree buttons are disconnected. The heading will then be determined by the NAV OFFSET signal from the XTE navigational receiver or from the CTS SAT.NAV receiver.

Selection is made by the INFO LOOP 2, Nav. Steering Type XTE/CTS/ PRIORITY.

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3.5 RF14XU Rudder Feedback Unit

(For details, ref. installation) The RF14XU Rudder Feedback Unit consists of a glass-rein forced fire

inhibiting polyester housing with a mounting plate of seawater resistant aluminium. Potentiometer, limit switches and an electronic drive module are also contained in the unit. The electronic drive module comprises a voltage section and a frequency section.

The voltage section outputs a voltage to the rudder angle indicator(s) which is proportional to the rudder angle. The voltage varies ±9V with half of the supply voltage as reference. The voltage shall therefore read “24VDC” supply/2 for midship position.

The frequency section outputs a signal to the control unit with 3400 Hz as midposition reference. It varies at a rate of 20 Hz/degree, increasing when the rudder moves to port and vice versa.

The shaft of the Feedback Unit is free to travel 360 degrees, but only ±90 degrees from midposition are used for signal control.

RF14XU is equipped with two sets of limit switches. One set can be connected in series with the autopilot solid state switch, the other can be incorporated in an independent hand steering system, if required.

15V Supply from autopilot 3400 Hz +/-20 Hz/degree

Indicator supply 0 - 18V

Galvanic iso lat ion

X/U CONVE R TE R

Limit switche s

RF14XU

Feedback pot.

1:1

RUDDER

Fig. 3-6

RF14XU principle

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Design and theory of operation

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3.6 D90 Series Distribution Unit

This unit is the main interconnection unit. The 24V DC mains power, alarm power, solenoid drive, rudder feedback and external alarms are connected to this unit.

The Distribution Unit always contains at least one Power Supply Board. Depending on requirement, one additional Power Supply Board may be added.

In addition, the Distribution Unit can contain a combination of the following boards:

• Interconnection

Board

• Thruster Interface

Board

• Solid State Board

• Dual Analogue

Board

The Solid State Board and Dual Analogue Board are identical in size and may be plugged together to the Interconnection Board or Thruster Interface Board in any combination.

The different versions of the D90 (also termed D9X) series are: D90: Provides solid state switching of one directional valve

solenoids, 19-40V DC 3A

D91: Provides solid state switching of one directional valve

solenoids, 110V DC 1A

D92: Provides solid state switching of one directional valve

solenoids, 110/220V AC 1A

D93: Provides two galvanic isolated ±10V or 4-20 mA signals For double set of directional valves, one extra Solid State Board must

be added.

POWER SUPPLY BOARD

(For detailed diagram refer to SCHEMATICS) The 24V DC mains input voltage is connected to TB1 - 1/2. The 24V DC is passing through a filter for protection of noise pulses

that may have been induced in the 24V DC mains supply line. To obtain galvanic isolation from the 24V mains, for improved noise protection, the 24V DC is chopped up by the oscillator. The pulsating

Terminals

Power supply board

Bus plug

Interconnection Board

Thruster Interface Board

Solid State Board

Dual Analog Board

Solid State Board

Fig. 3-7

D9X PCBs

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DC voltage is coupled via the isolation transformer T1 to the rectifier diode D2. The filtered 15V DC voltage is regulated by the feedback line through the optocoupler to maintain isolation.

The green LD1 indicates presents of voltage.

24V DC

+ _

24V DC TO EXTRA SUPPLY

1 2

+ _

FILTER

OSC.

TB1

TB2

TB3

OPTO COUPLER

FEEDBACK

15V

LD1

FUSE

2.5A

Fig. 3-8

Power supply PCB - Simplified diagram

INTERCONNECTION BOARD

(For detailed diagram, refer to SCHEMATICS) The AP9 MK3 Control Unit is connected to the distribution unit via

one cable from J1, terminated to TB1, TB2 and TB3. The Interconnection Board provides distribution of the signals to the

BUS plug.

TB1

TB2

TB3

BUS PLUG

AP9 MK3 CONTROL UNIT J1

DB1

REG.

24V DC

LARM

VOLTAGE

15V DC REG. FROM P.S.B.

15V ALARM TO AUTOPILOT

15V MAINS TO AUTOPILOT

ALARM

LD1

Fig. 3-9

Interconnection PCB - Simplified diagram

The 24V DC alarm voltage is connected to TB3. Polarity of voltage is not critical as the bridge rectifier DB1 rectifies the voltage. The 24V

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Design and theory of operation

20169223D 3-9

alarm voltage is regulated to 15V DC by the regulator Q2, and the LED LD1 indicates presents of voltage.

During normal operation, the relay K1 will be energized, thus connecting the 15V regulated mains voltage as alarm supply. In the event of a mains power failure, the alarm voltage will be connected as supply via the deenergized K1 relay.

The alarm relay K2 is energized by an alarm signal from the control unit (alarm = GND)

THRUSTER INTERFACE BOARD

(For detailed diagram, refer to SCHEMATICS) The Thruster Interface Board is identical in size with the

Interconnection Board, but includes one ±10V analogue signal or one 4-20mA current signal output, both galvanic isolated.

There is also a 10 kHz generator to provide feedback signal to the Control Unit in order to enable the ±10V analogue signal from the control unit.

1 0

SW11

10 kHz

Osc.

FEEDBACK TO CONTRO L UNIT

BUFFER & CURRENT GENERAT O R

(ISOLATED OUTPUT)

RV15

RV13

RV14

4-10mA

+/-10V

JUMPER SWITCH

SW1

BUS

Fig. 3-10

Thruster Interface PCB - Simplified diagram

The jumper switch SW11 selects either a feedback signal via the bus connector or the 10 kHz signal to be applied to the control unit. For the 10 kHz signal, the jumper switch shall be set in position "0" (shorting pin 2 and 3).

The resulting ±10V signal from the control unit is then applied to the Buffer & Current generator.

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Provisions have been made for offset and level adjustments of the output signals by the SW1, containing four switches, and trim potentiometers RV13-14 and 15. The adjustment procedure is described under section Installation: Analogue signal, Rudder & Thruster (page 5-50.).

SOLID STATE BOARD

This PCB performs the switching of the solenoids. There are three versions:

• D90: switching 19-40V DC, 3A

• D91: switching 110V DC, 1A

• D92: switching 110/220V AC, 1A

All versions are made from the same PCB. Only the components related to the solid state switch-"relays" are different. The differences are listed on the detailed schematics. (Drw. N1-012815)

A simplified diagram is shown below.

+15V

IC1

Q1 Q3

OPTO OPTO

REG.

IC3

LD4

IC2

IC5

IC4-B

IC4-A

LD3

PORT

STBD

IC6-C IC6-DLD2

LD1

LD5

456TB14

F1F2

13/42

SAFE RELAY

R21

H L

LIMIT SWITCH

TB12

SOL. SUPPLY

S1 S2

JUMPER SWITCH

Fig. 3-11

Solid state PCB - Simplified diagram

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Design and theory of operation

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FUNCTIONAL DESCRIPTION

The Q1 transistor functions as an ON-OFF switch, controlled by the "Safe Relay" signal from the control unit to the base.

Provisions for independent ON-OFF switching is also made for by the jumper switch S1-S2-S3. When placing the jumper switch in pos. 2-3, the Q1 transistor will be switched ON.

The IC1 voltage regulator output is monitored by LD1 (Green LED). The starboard and port signals are connected to IC4 + A and B

optocouplers and will switch on the transistor current when the rudder command signals switches low, also provided that the optocoupler diodes are on via limit switches.

The IC4-A and B transistor current will control Q2 and Q5 and thus switch on IC2 or IC3 solid state switch. The control signals are monitored by the red and green LED's (LD3 and LD4). The LD3 and LD4 are connected to the diodes of the optocouplers IC6-A and B, such that if both should conduct at the same time (PORT and STBD rudder commands both on), the switch transistor Q3 will be switched off.

This will result that the safety relay IC5 will deenergize, and no rudder commands to the solenoids will be made.

During normal operation, the transistor Q3 will be conducting, and status is monitored by the LD2 LED.

The safety relay IC5 is also controlled by a load protection circuit. The solenoid current is sensed by the resistor R21 and RV1, controlling transistor Q6. When Q6 is conducting, the optocoupler IC6-D will be switched ON, thus switching on the next optocoupler, IC6-C, that will start to conduct, switching on the Fault indicator LD5, and make the transistor Q4 start to conduct. The Q4 will start the diode in IC5 and thus deenergize the safety relay IC5. At the same time, the IC6-C will be latched to conduct. To reset, the system must be switched OFF and ON.

The jumper switch marked H/L determines the current through R21 for low (19-40V) or high voltage (110-220V). If the jumper switch is pulled out, the safety device is disabled. The fuses F1 and F2 are connected in series with each solenoid.

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CONNECTION OF LIMIT SWITCHES AND SOLENOIDS

SEE SEPARATE DETAIL ALT. I/II

1 2 3 41 2 3 4

1 2 3 4 5 6

SAFE RELAY

IC5

IC2

IC3

TB12 TB15 TB14 TB16

NFU

LIMIT SWITCH ES

(NO LOAD)

IC4-A

IC4-B

STBD

CMD.

PORT CMD.

LIMIT SWITCHES

(SOL. LOAD)

PWR

F1 F2

1 2 3 4

Fig. 3-12

Solid state PCB - connection of limit switches

When the RF14XU limit switches are connected to the TB12, only control signals are switched. When the limit switches are connected to TB16, the solenoid load (current) is switched. It is recommended not to use the TB16 connections if the load exceeds appr. 30W. If so, TB16 no. 1-3 and 2-4 are jumpered and the limit switches connected to TB12. If TB16 is used for limit switches, TB12 no. 1-3 and 2-4 must be jumpered.

Note ! Limit switch connections not used must be jumpered

1 2 3 4 5 6TB14

S.R.

STEERING GEAR

SOLENOID SUPPLY

ALT. II

1 2 3 4 5 6

TB14

ALT. I

JUMPER

STEERING GEAR SOLENOID SUPPLY

S.R.

Fig. 3-13

Solid state PCB - connection of solenoids

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Design and theory of operation

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DU AL ANALOGU E P CB

The Dual Analogue PCB contains two identical circuits, each providing a galvanic isolated analogue voltage, ±10V, 0-30V or 420mA current. There is also a 10 kHz oscillator for feedback signal to enable the ±10V signal from the control unit, jumpered in by S21 and S22 in pos. 1.

The simplified diagram shows only one of the two circuits, and the component numbers differs by 10.

The input signal is normally the ±10V from the control unit, selected by S1 and S2 in pos. 1.

By setting S1 and S2 in pos. 2, an external signal connected to TB21 5 6 is selected as input signal.

The signal is then connected to IC2, the AD converter where the output signal is galvanic isolated from the input signal.

When the 4-20 mA signal is used, the input signal to IC3 must be 010V for ±10V input signal to the AD converter. This is obtained by setting the SW 1-1 switch in pos. 1, thus connecting the voltage divider R1/R2. SW1-2 must be placed in pos. 1 (ON) to connect the DC/DC converter. RV4 is used to adjust the 0V output for -10V input of IC2.

The DC/DC (IC4) converter, providing ±15V, is used for supply voltage to the 4-20 mA current generator consisting of IC3, Q1 - Q2 and Q3. The 4-20 mA current is adjusted by RV1 (4mA) and RV2 (20mA). The current return line is connected to the DC/DC con verter neg. output (-15V).

The maximum load resistance for the current output is limited to 500 ohm.

The voltage output may be selected to operate as 0±10V or less, adjusted by the attenuator RV5. For this output, switches SW1-1 shall be set to 0 (open) and SW1-3 shall be in pos. 1 (closed). An offset of ±3V may be adjusted by RV3.

The voltage output may also be selected to work from +12 ±6V or similar when using the DC/DC converter. The switches SW1-3 and 4 shall be in pos. 1 (ON). The output voltage can be adjusted by RV4, RV3 and RV1 for proper midpoint and max/min voltages.

Minimum load resistance for ±10V signal is 2K, and for 6-12-18 signals (with DC/DC converter) the load is 36K.

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10kHz Feedback hi

SW1-1

+/-10V Ext. inp.

IC4

RV4

1 2 3

4 5 6

101010

23 4

TB21

DC/DC CONV. +/-15V

IC2

AD.

CONV.

IC21

Vreg.

Vinp.

+VR

RV5

R2 R3

RV3

+/-10V from

bus

R1R9

0-10V

OSC.

S21

1 0

+15V

IC3

4-20mA generator Q1-Q2-Q3

RV2

RV1

SW1SW1SW1

+VR

I V inp.

V inp.

Galvanic isolated

S22

1 0

Feedba c k lo

Fig. 3-14

Dual Analogue PCB - Simplified diagram

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Design and theory of operation

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3.7 F200-40 Remote Control

This unit enable remote control of the AP9 MK3 Control unit. A simplified diagram is shown below:

DISPLAY

IC3

LCD1

CLOCK DATA

PORT

STBD

IC2-E

IC2-F

PORT

MODE

STBD

PUSH BUTTONS

H L

D5 D6

REG.

IC6

R18D3

SUPPLY

COURSE 2

COURSE 1

IC5-A

IC5-B

OPTO COUPLERS

SPLIT ROTOR

COURSE KNO B

Fig. 3-15

F200-40 Simplified diagram

The F200-40 display is operated via clock and data signals from the control unit and will display actual course or set course, dependent of operational mode.

When turning the course knob, IC5-A and B will shape the pulses generated by the two opto-couplers that are switched ON/OFF via the split-rotor, and thus provide pulses as course 1 and course 2.

The operational mode of the control unit can be selected by the push button M (Mode). This button provides both PORT and STBD signals simultaneously by the two diodes D1 and D2. The sequence of mode change is described under the OPERATION section.

When pushing the P and S buttons, the PORT and STBD signals will switch to low (GND) and provide course change or NFU-steering depending on the operational mode.

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3.8 FU91/92 Follow-Up Lever

The FU91/92 FU lever has been designed for use primarily together with the FU9X follow-up amplifier. The construction is made such that either one single PCB, containing all the electronics, including the follow up potentiometer or two identical PCB's can be mounted and operated from one common FU-shaft.

The single version is the FU91, and the double version is the FU92. The designed is based on "TAKE COMMAND" pulses and "IN

COMMAND" signals that makes it possible to use several units connected to the FUA9X.

There are four jumper switches for selection of functions, and for use together with the AP9 MK3 autopilot, the settings are as shown:

S1: Selects direction of signal versus direction of lever movement. Pos

1-4 and 2-3 S2: Pos 1 S3: Pos 2 S4: Pos 1

RTN

POWER

Vreg.

IC2

DIM.

IC1

Vreg.

RV1

IC3

FU sign.

Vreg.

TC sign.

IC 4

IC5

PTTC

RL1

IN CMD.

Fig. 3-16

FU91/92 Simplified diagram

The signal/wire terminations are listed as follows:

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Design and theory of operation

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TB1-1: Power pos (10-15VDC) TB1-2: Power RTN TB1-3: TC (Take Command) signal TB1-4: IC (In Command) signal (Enable) TB1-5: FU (Follow-up) signal 0-1mA

When pushing the PTTC button, the flip-flop circuit IC5 is switched via the IC4, thus switching on transistor Q1 to energize the relay RL-

1. The relay contact A switches TC to LO (GND) at the same time, the "IN CMD" lamp LP will be switched on via the jumper switch S3 in pos. 2. The dimmer control varies the voltage output of the regulator. IC2 and LED's D3 and D4 are for scale illumination.

The relay RL1 will be deenergized by another push on the TC button, as this will make the flip-flop change one more time.

The trim potentiometer RV1 provides offset adjustment.

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This page is intentionally left blank.

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Technical Specifications

20169223D 4-1

4 TECHNICAL SPECIFICATIONS

4.1 AP9 MK3 Control Unit

Dimensions.............................See Fig. 4-1.

Weight ..................................... 3.0 kg

Protection................................IP43 (Refer to page 4-13.)

Ambient temperature,...........storage: –25 - +70°C

operation: 0 - +55°C

Safe distance to compass: .....0.3m

Max. current consumption:..0.6A

Input signals:

Magnetic compass: ................ sin/cos 2V, 2.5V ref.

Fluxgate compass:.................. sin/cos 2V, 2.5V ref.

Gyro compass serial signal:

- RGC11 and RGC12 proprietary sentences, NMEA, UART (SKR80/82)

- Other formats require optional Gyro Interface Board.

Nav.signal: Format: NMEA 0183

XTE: APA, APB, XTE, CTS: APA, APB, BOD, BWC, BWR, BWW, HSC Baudrate: 4800

Speed signal:........................... VTG

Also see page 4-14.

Output signals:

"ON/OFF" steering signals (12V) ±10V analogue signal NMEA, HDM/HDT with 0.1 degree resolution Repetition rate: Selectable between 5/sec. and 1/sec. Ref. page 5-43.

Fig. 4-1 AP9 MK3 Control Unit, dimensions

Panel cut out: 138 x 282 mm (5.43 x 11.10”)

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4.2 AP9 MK3 Gyro Interface Board

Input signals: Synchro 1:1

Synchro 90:1 Synchro 360:1 Autopilot excited synchro Stepper 6 step/deg, 24-70V

4.3 CD109 Course Detector

Dimensions : ....................See Fig. 4-2.

Protection : ....................IP56

Ambient temperature,

storage:......–40 - +85°C

operation: –30 - +60°C

Cable length: ....................1 m

120°

min/max. 80-100 (3.2-4.3")

(

)

(

)

35 (1.4")

1000 (39.4")

Fig. 4-2

CD109 Course Detector, dimensions

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Technical Specifications

20169223D 4-3

4.4 RFC35R Rate Compass

Dimensions:............................See Fig. 4-3

Weight: .................................... 0,9 kg (2,0 lbs)

Supply:.....................................10-29VDC, 1 watt

Heading output:.....................Serial, rate sensor stabilized

Output format: ....................... Serial, Robnet

bus for Robertson

autopilots or NMEA 0183 10x/sec.

NMEA heading:.....................$IIHDM,x.x,M*hh<cr><lf>

x.x=heading, hh=checksum

Standard configuration:........ Robnet output

Optional analogue output: ... Sine/cosine by plug-in PCB

Accuracy:................................. <1.25 degrees rms (after calibration)

Repeatability:.......................... <0.2 degrees rms

Calibration: ............................. Automatic

Roll/Pitch:...............................± 35 degrees

Cable supplied:....................... 15 m (49 ft) TP shielded with Robnet

plug Temperature range:

Operation:................ 0 to +55 °C (+32 to + 130 °F)

Storage:..................... –30 to +80 °C (–22 to +176 °F)

Environmental Protection: ...IP56

Mounting: ...............................Deck or bulkhead

Material: .................................. Black ABS

Fig. 4-3 RFC35R Rate Compass, Dimensions

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4.5 RFC35NS Fluxgate Compass

Dimensions:............................See Fig. 4-3

Heading output:.....................Serial and analogue

Output format: ....................... NMEA183 10x/sec. and sine/cosine.

NMEA data:............................$IIHDM,x.x,m*hh<cr><If>x.x=heading,

hh = checksum

Analogue data:.......................Sine/Cosine ±2V, 2.5VDC reference.

Accuracy: ................................<1.25° rms

Repeatability:.......................... <0.2° rms

Calibration: ............................ Automatic

Roll & Pitch: ...........................±35°

Supply:.....................................10-29 VDC, 1 W

Temperature:

Operation:................0 to +55°C (+32 to + 130°F)

Storage:.....................–30 to +80°C (–22 to +176°F)

Protection:............................... IP56

Mounting: ...............................Deck or bulkhead

Cable supplied:.......................0.3 m (1 ft.) with Viking connector for

Robertson autopilots (Sine/Cosine data) and N2500 NMEA Interface.

4.6 RFC35N NMEA Compass

Dimensions:............................See Fig. 4-3

Supply:.....................................12, 24VDC

Output: .................................... NMEA0183, HDM (10x/second)

Calibration: ............................. Automatic

Repeatability:.......................... ± 0.5 degrees

Roll/Pitch:...............................± 35 degrees

Accuracy:.................................± 3 degrees after calibration

Protection:............................... IP56

Temperature range:

Operation: .......................0 to +55°C (+32 to + 130°F)

Storage:............................–30 to +80°C (–22 to +176°F)

NMEA0183 output data:

Heading: .................................. $IIHDM,x.x,M*hh<cr><lf>

x.x=heading, hh= checksum

Status: .....................................$PSTOK,R<cr><lf>Calibration running

$PSTOK,C<cr><lf>Calibration terminated, or not running (Also presented before calibration is done).

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Technical Specifications

20169223D 4-5

NMEA0183 input data:

Calibration start command:.....$PSTOC<cr><lf>

Heading offset adjust:..............$PSTOK,,,nnn,<cr><lf>

nnn = offset adjust angle 0 – 360 degree.

PSTOK and PSTOC are Stowe Dataline proprietary sentences

4.7 Distribution Unit

Dimensions:............................See Fig. 4-4.

Protection:............................... IP22

Weight: .................................... 3,5 kg

Ambient temperature,

storage:..........................–25 - +70°C

operation:...................... 0 - +55°C

Safe distance to magnetic compass: 1.5 m (5')

Mains voltage:........................24V DC +30/–25%

Alarm voltage : ......................24V DC ±20 %

Input signals:

Rudder Feedback Unit:.........3400 Hz +/-20Hz/degree

Steering Lever

FU :................................. Current signal: 0-1mA (±45°)

NFU : ............................. Switch contacts

D90 Distribution Unit:

Solid state output: ....... Switching low DC (19-40V) single

channel. 3A.

D91 Distribution Unit:

Solid state output: ....... Switching high DC (110V) single

channel. 1A.

D92 Distribution Unit:

Solid state output: ....... Switching high/low AC (110-220V)

single channel. 1A.

D93 Distribution Unit:

Analogue output: ........Two independent channels with

+/-10V or 4-20mA output

D99 Distribution Unit:

Output:.......................... Switching reversible motor, max. 10A,

24VDC.

Page 82

Robertson AP9 Mk3 Autopilot

4-6 20169223D

5 (0.2")

105 (4.2")

333 (13.1")

360 (14.2")

4 Fixing holes Ø8 (0.3")

340 (13.4")

290 (11.4")

320 (12.6")

300 (11.8")

Fig. 4-4

D9X Distribution Unit, Dimensions

Page 83

Technical Specifications

20169223D 4-7

4.8 RF14XU Rudder Feedback Unit

Dimensions: See Fig. 4-5. Protection: IP56 Ambient temperature: –10 - +55°C Operating voltage: 24VDC +30/–20% Voltage output: 0-18V DC (9V as midships reference) Frequency output: 3400Hz (midships reference)

Port: +20Hz/degree, Stbd: –20Hz/degree Capacity: 5 indicators in parallel Rudder angle: ±45 ° (Changeable to 60, 70 or 90°) Limit switches: Adjustable from ±5 to ±160°

120 (4.8")

40 (1.6")

75 (3")

80 (3.15")

Ø12 (0.47")

185 (7.3")

150 (5.9")

240 (9.5")

160 (6.3 ")

(

)

Fig. 4-5

RF14XU Rudder Feedback Unit

Dimensions

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Robertson AP9 Mk3 Autopilot

4-8 20169223D

4.9 RF Standard Transmission Link

Fig. 4-6

RF Standard Transmission Link - dimensions

4.10 S9 Steering Lever

Dimensions:............................See Fig. 4-7.

Protection:............................... IP56

Ambient temperature:...........–25 - +70°C

Safe distance to compass: .....0.3 m

Max. inductive load:..............4A/24V DC, 0.6A/110V DC,

0.3A/220V DC, 10A/AC

137 (5.40")

144 (5.67")

Panel cut-out:138x138 (5.44")

78 (3.1")

70 (2.75")

144 (5.67")

95 (3.75")

Fig. 4-7

S9 Steering Lever - Dimensions

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Technical Specifications

20169223D 4-9

4.11 FU91 Steering Lever

Dimensions:............................See Fig. 4-8.

Protection:............................... IP56

Ambient temperature,...........storage: –25 - +70°C

operation: –10 - +55°C

Safe distance to compass: .....0.3 m

144 (5.67")

68 (2.68")

76 (3.00")

137 (5.40")

144 (5.67")

30 (1.18")

Panel cut-out:138x138 (5.44")

Fig. 4-8

FU91 Steering Lever - Dimensions

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Robertson AP9 Mk3 Autopilot

4-10 20169223D

4.12 S35 Steering Lever

Dimensions:............................See Fig. 4-9.

Weight: ................................... 1.4 kg (inclusive cable)

Max. inductive load:..............4A/24V DC, 60mA/110V AC,

25mA/220V AC

Temperature range:...............Storage: –30 to 80° C

Operation: –10 to 55° C.

Environmental protection:....IP56

Safe distance to compass: .....0.5 m (1,6 ft.)

Power consumption (light):..6 mA

Cable:.......................................10 m cable with six wires connected

through bottom gland

Note! Cable gland can be moved to the back side.

Fig. 4-9

S35 Steering Lever - Dimensions

Page 87

Technical Specifications

20169223D 4-11

4.13 F1/2 Remote Control

Dimensions:............................See Fig. 4-10

Protection:............................... IP56

Cable length:...........................10 meters (30 ft.)

Max. inductive load:..............4A/24V DC, 60mA/110W AC,

25mA/220V AC

Fig. 4-10

F1/2 Remote Control - Dimensions

4.14 F200-40 Remote Control

Dimensions: See Fig. 4-11 Protection: IP56 Ambient temperature,

storage: –25 - +70°C

operation: 0 - +55° C Safe distance to compass: 0.3 m Cable length: 7 m (21ft.)

Fig. 4-11 F200-40 Remote Control Dimensions

72 (2.8")

145 (5.7")

30 (1.2")

46 (1.8")

5 (0.2")

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Robertson AP9 Mk3 Autopilot

4-12 20169223D

4.15 RI9 Rudder Angle Indicator

Dimensions:............................See Fig. 4-12.

Supply voltage:.......................24/32V DC ±20%

Illumination:...........................Maximum 80 mA

Input signal:............................0.1 -1.1 mA or ±10V

Rudder angle:.........................45°-0-45° (other angles as

option) Ambient temperature,

storage:................–25 - +70°C

operation: ......... –10 - +55°C

Protection:............................... IP56

Safe distance to magnetic compass: 2.6 m (9ft.)

Rudder Feedback Units: .......RF45, RF45X, RF14XU (RF100, RF140).

137 (5.40")

144 (5.67")

Panel cut-out:138x138 (5.44")

65 (2.56")

57 (2.24")

144 (5.67")

153 (6.02")

RI9

Fig. 4-12

RI9 Rudder Angle Indicator - Dimensions

Page 89

Technical Specifications

20169223D 4-13

4.16 IP protection

Each part of a Robertson autopilot system has got a two digits IP protection code.

The IP rating system provides a means of classifying the degrees of protection from dust, water and impact afforded by electrical equipment and enclosures. The system is recognised in most European countries and is set out in a number of British and European standards.

The first code number describes the protection against solid objects, and the second number describes the protection against liquids.

FIRST NUMBER

Protection against solid

objects

SECOND NUMBER

Protection against liquids

IP TESTS IP TESTS

0 No protection 0 No protection 1 Protection against solid

objects up to 50 mm, eg. accidental touch by hands.

1 Protected against vertically

falling drops of water (eg. condensation).

2 Protection against solid

objects up to 12 mm, eg. fingers.

2 Protected against direct sprays of

water up to 15° from the vertical.

3 Protection against solid

objects over 2.5 mm (tools + wires)

3 Protected against sprays to 60°

from the vertical.

4 Protection against solid

objects over 1 mm (tools + wires + small wires)

4 Protected against water sprayed

from all directions - limited ingress permitted.

5 Protection against dust -

limited ingress (no harmful deposit)

5 Protected against low pressure

jets of water from all directions limited ingress permitted.

6 Totally protected against

dust

6 Protected against strong jets of

water, eg. for use on shipdecks limited ingress permitted.

7 Protected against the effects of

immersion between 15 cm and 1 m.

8 Protected against long periods of

immersion under pressure.

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Robertson AP9 Mk3 Autopilot

4-14 20169223D

4.17 Specification of messages

Data that are used are underlined. Which steering mode to be used depends on the received messages as follows.

CTS steering

$--XTE,A/V,A/V,X.XX,L/R,N[CR][LF]

Bearing steering

$--BWR,XXXXXX,XXXX.XX,N,XXXXX.XX,W,XXX,T,XXX,M,XXX.X,N,XXX[CR][LF] $--BWC,XXXXXX,XXXX.XX,N,XXXXX.XX,W,XXX,T,XXX,M,XXX.X,N,XXX[CR][LF] $--BWW,XXX,T,XXX,M,XXX,XXX[CR][LF]$--BOD,XXX,T,XXX,M,XXX,XXX[CR][LF] $--HSC,XXX,T,XXX,M[CR][LF]

Priority (mixed) steering

(cross-track with automatic new bearing at waypoints)

$--APA,A/V,A/V,X.XX,L/R,N,A,A,XXX,M/T,XXX[CR][LF] $--APB,A/V,A/V,X.XX,L/R,N,A,A,XXX,M/T,XXX,XXX,M/T,XXX,M/T[CR][LF]

Speed correction signal (VTG)

$--VTG,X.X,T,X.X,M,X.X,N,X.X,K<CR><LF>

Page 91

Installation

20169223D 5-1

5 INSTALLATION

5.1 Unpacking and handling

Care should be taken when unpacking and handling the equipment. A visual inspection should be made to check that the equipment has not been damaged during shipment and that all components and parts are present according to the packing list.

5.2 General

When installing the units, particular attention being given to the operator's need for ease of access.

For cable layout refer to the External Cabling Diagram.

5.3 Control Unit

The unit is built to standard DIN dimensions for console mounting. Dimensions for the panel cut out are shown on Fig. 4-1. A fastening device for console mounting and a bracket for panel mounting are supplied with the equipment. The mounting bracket has four screw holes for bulkhead mounting, and the Control Unit is fitted to the bracket by two Allan screws (Fig. 5-2). A matching Allan wrench is supplied.

It is important to locate the Control Unit so that the viewing angle to the displays is between 45 and 90 degrees in both planes. When console mounting, locate the control unit as near the front edge as possible. This makes the reading of the displays easier. Avoid direct sunlight on the display.

Fig. 5-1

Control unit - panel mount

Page 92

Robertson AP9 Mk3 Autopilot

5-2 20169223D

Fig. 5-2

Control unit - bracket mounting

Connector assembly

The cable conductors are connected to the connector block according to the connection lists drw. no. N4-016896. The following tools are required to crimp the connector pins and sockets to the individual cable conductors:

Crimping tool : Amp 58495-1 Extraction tool: Amp 725840

Note ! Do not use other tools than those specified!

Fig. 5-3

Connector assemble

For protection against electro magnetic interference, all control unit connectors must be fitted with the supplied metal shell and cover. In addition, the cable for J1, J2 and J3 must be fitted with the supplied ferrite cores.

Page 93

Installation

20169223D 5-3

Screen termination

Strip about 1 cm (0.4") of the cable's insulation and pull the screen backwards to cover the insulation. Screw the connector block onto the actual control unit socket. Screw the connector shell onto the connector block. Fix the cable screen to the shell by a wire strap and tighten well to make sure the screen has good contact. Apply a thin layer of pure Vaseline on the shell threads. Screw the cover onto the shell until it makes good connection with the control unit cabinet. Fasten the ferrite core as close to the connector cover as possible by a wire strip (Only for J1, J2 and J3 cables).

The control unit has a ground terminal and must have a proper ground connection to the hull. The grounding wire should be as short as possible and at least 10 mm wide.

For grounding of the screws, also refer to Fig. 8-6 screen termination.

Fig. 5-4

Control unit - connector mounting

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Robertson AP9 Mk3 Autopilot

5-4 20169223D

5.4 Heading sensors

Note ! In the case of dual station system, the heading sensor shall be connected

only to the main control unit.

General

The AP9 MK3 is capable of reading most types of heading reference sensors. These can be magnetic compasses, fluxgate sensors or gyrocompasses.

Combination of different sensors can be made, the maximum configuration is: 2 magnetic compasses, 1 gyro compass (synchro), 1 gyro compass (stepper), 1 gyro compass (current loop) and 1 fluxgate compass.

Two gyros of same type cannot be used simultaneously, e.g. 2 synchros or 2 steppers or 2 fluxgates.

Note ! A gyro compass with only

serial data output, can not be used in a dual station configuration.

When delivered from the factory, the AP9 MK3 is prepared for magnetic compasses and fluxgate compass. Gyro compass with serial/current loop output may also be directly connected, but SW1-6 on the Interface Board must be set to ON position. For connection to other types of gyros, the AP9 MK3 Gyro Interface Board is required, and switches on the Interface Board must be set to correct position. See page 5-58.

Desired steering compass and Monitor compass are selected by means of the COMPASS SELECT button and the INCREASE/DECREASE button on the front panel. See page 2-6.

Magnetic compass

To obtain an accurate heading from the magnetic compass, great care should be taken when determining the location of the compass. If possible, select a location that provides a solid horizontal mounting base, free from vibration and as close to the vessel's centre of roll and pitch as possible. It should be as far as possible from disturbing

3 6

8 6

1 2

OUT

SERIAL HEADING DATA

COMM. LINE (DUAL ST./RMP)

HEADING NMEA (HDT/HDM)

NAV. RECEIVER (NMEA)

AP9 MK3

CHANNEL A

CHANNEL B

NOTE: In Dual Station configuration, serial heading data

can not be connected to J3, 1-2.

OUT

Fig. 5-5

Serial line connections

Page 95

Installation

20169223D 5-5

magnetic influences such as the engines, cables, transmitter antennas or other electromagnetic objects.

Note ! The compass must be adjusted.

Heeling error

Heeling error may be observed when the boat is rolling and pitching, causing an unstable compass card. This can be adjusted for by using a "heeling magnet", placed vertically below or above the exact centre of the compass. The magnet is normally placed with the red end up in the Northern Hemisphere and the blue end up in the Southern Hemisphere. The correct distance between magnet and compass can best be found during sea trials. Mounting the compass close to the vessel’s centre of roll can also reduce the heeling error.

Northerly/southerly turning error

Symptoms of northerly turning error are that a vessel is "S-ing" on northerly headings when at high latitudes. The reason for this phenomena is that the earth's magnetic lines of flux are parallel to the earth's surface only at the equator, and thus no vertical magnetic component exists. When moving further north from the equator, the vertical component of the earth's magnetic field increases.

The directional reading from a magnetic compass is based upon the horizontal component of the earth's magnetic field. This component becomes smaller and smaller with increasing latitude, while the vertical magnetic component increases. The resulting effect at high latitudes magnetic compasses become sluggish and appear to be unstable. These symptoms become more apparent as speed increases.

The same phenomena is experienced in the southern hemisphere, but on southerly courses and is referred to as southerly turning error.

There is no patent cure for this problem, besides making a proper installation and adjustment of the compass.

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Robertson AP9 Mk3 Autopilot

5-6 20169223D

CD109 Course Detector mounting

The course detector is mounted on the ship's magnetic compass to transmit the compass signal to the control unit. The mounting method will depend upon the compass design. The distance between the course detector and the compass card depends upon the magnetic momentum of the compass card magnets. A distance of 70-90 mm for a magnetic momentum of 1500-2000 cgs is therefore recommended. For adjustment of signal level, see below.

For mounting instructions refer to Fig. 5-6. The course detector can be attached to the compass either by a 6 mm screw to the bottom of the compass bowl or by use of the tri-pod holder supplied with the course detector.

The course detector is also supplied with cable (1m) and plug. Socket and connector with bracket for extension cable are in the standard scope of supply. The extension cable is optional equipment.

The compass should be checked for free movement in the gimbals without stressing the detector cable.

The CD109 Course Detector is connected to J2 or J3 of the control unit, and the connection is shown on the External Wiring Diagram. When connecting two magnetic compasses, one must be connected to J2 and the other to J3.

If the Course Detector is mounted on the top of the compass, the sine/cosine signal on J2/J3 pin 10 and 11 must be interchanged.

Adjustment of signal level

The control unit supplies a 2.5V reference voltage (V/2) to the Course Detector secondary windings, together with exciter pulses of fixed frequency to the primary winding.

The resultant voltage on the secondary windings follows the sine and cosine of the compass heading. The peak values of the sine and cosine signals are dependent on the distance between the course detector and the compass magnets. Both the reference voltage (V/2) called CENT.SIN1 and CENT.COS1 and the sine and cosine voltages called COMP1 SIN and COMP1 COS (0-5V approximately) are

Fig. 5-6

CD109 Course Detector mounting

Page 97

Installation

20169223D 5-7

monitored by the electronics and shown in plane text on the display. Refer to the Detailed Debug list, page 5-45

The routine will monitor the signals on both course detectors if two magnetic compasses are connected.

Gyro Compass

The AP9 MK3 will normally interface to the repeater signals of a gyrocompass.

Upon delivery the Control Unit is prepared only for connection to magnetic and fluxgate compass and gyro compass with serial interface.

When connecting to other types of gyrocompasses, an extra circuit board (AP9 MK3 Gyro Interface Board) must be mounted in the Control Unit. This board is mounted to the Interface Board by means of a 40 pins plug and 4 spacers. The spacers are already mounted on the Gyro Interface Board which is plugged into the Interface Board without screw connections. If the Autopilot is ordered for gyro compass interface the Gyro Interface Board will be factory mounted.

Further more, the Control Unit must be set up for the correc t type of gyro, correct phase- and reference voltage and whether gyro signal is autopilot excited or not. This is done by means of DIP switches (two packages with 8 switches in each), mounted on the solder side of the Interface Board.

Note ! All switches are factory set to OFF position.

Initially check the position of SW1-7 and 8 (excitation) carefully. These switches must be in OFF position prior to setting up the interface and connecting the gyrocompass.

The set-up is done in accordance to Dockside Alignment/test; page 5-49.

Electrical connections

Connection of the different types of gyro compasses are shown in the External Wiring Diagram or the diagrams on the next pages.

Gyro compass with synchro output is connected to J2 of the Control Unit.

Gyrocompass with stepper output (24-70V DC) is connected to J3 and the connection is polarity independent.

Gyrocompass with current loop (serial data) output is connected to J3 of the Control Unit.

Page 98

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Gyro compass synchro signal connections:

3 4

5 6 7

S1 S2

S3 R1 R2

CONTROL UNIT

S1 S2

S3 R1 R2

GYRO COMPASS

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Caution ! Make sure that the SW1/2 are correctly set before connecting

the plug. Ref. page 5-58.

Gyro compass step signal connections:

3 4

5 6 7

CONTROL UN IT

GYRO COMPASS

1A 1B

2A 2B 3A

3BCOM.

Link in plug

)LJ

6WHSVLJQDOFRQQHFWLRQ

9VWHSVLJQDOSRVLWLYHRUQHJDWLYH

3 4

5 6 7

CONTROL UNIT

GYRO COMPASS

1A 1B

2A 2B 3A

COM.

)LJ

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Page 99

Installation

20169223D 5-9

RGC50/10/11 Gyro compass connection to AP9 MK3

9 6

3 13 12

CONTROL UNIT

RGC SIGNAL INTERFACE UNIT

V/2 COS

SIN GND +12V

5V/2 COS SIN GND +12V

TB4

Fig. 5-10

Sine/cosine connection

2 1

CONTROL UNIT

RGC SIGNAL INTERFACE UNIT

4OUT Lo

OUT Hi

TB3

Lo Hi

SERIAL I/P

Fig. 5-11

Serial line connection

RGC12 Gyro compass connection to AP9 MK3

2 1

CONTROL UNIT

RGC12 CONTROL BOX

IRNL

IRNH

TB7

Lo Hi

NMEA

IRNS

Fig. 5-12

RGC12 Serial line connection

Note ! If Dual Station is used, serial heading data can not be connected to J3, 1-2.

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Robertson AP9 Mk3 Autopilot

5-10 20169223D

RFC35NS Fluxgate Compass

For initial installation of the compass, the desired mounting location should be checked for unseen items which may cause compass error.

This is done easily by a (small) hand held magnetic compass, provided it has a visible card with markings, to detect magnetic interference.

Place the compass in the desired mounting location. Allow the compass card to come to rest and note what heading it is reading (refer to lubber line or other mark on the compass bowl).

Then slowly proceed to move the compass in a straight line fore and aft (without turning it!) approximately 30 cm out of the mounting location. Repeat the movement, but this time athwart ship.

If at all possible, also move the compass in the vertical plane (up and down).

As a thumb rule, the compass reading should not vary more than 5 degrees from the initial reading during this test. You can then be reasonably sure that the compass location is OK.

If more than 5 degrees deflection is observed, it might still be OK, but if exceeding 10 degrees, chances are that the calibration/ compensation will not be optimal.

If a large deflection is observed, try to find what is causing it or find a new compass location.

Even though the RFC35 Fluxgate compasses can compensate for up to 30 degrees of deviation, these general rules should be followed to ensure the best performance from the compass.

FWD

Fig. 5-13 RFC35 mounting

Down

Stbd.

Port

Fore

Simrad Robertson AP9 Mk3 Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual