Simrad AP24 Autopilot OPERATOR MANUAL

Below you will find brief information for Autopilot AP24. This manual is intended as a reference guide for operating and maintaining the Simrad AP24 autopilot. The Simrad AP24 autopilot is a complex control system that can be expanded and enhanced with a selection of options and accessories. The AP24 offers features like automatic steering, NoDrift mode, wind vane steering, and WindNAV mode, which can help you navigate your boat more efficiently.

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OPERATOR MANUAL

AP24

AUTOPILOT

20222535 / A

English

Sw.1.1

Copyright

About this manual

Rev. A

06.11.07 First

This manual is intended as a reference guide for operating and maintaining the Simrad AP24 autopilot.

An autopilot is a complex control system so please take time to read this manual to get a thorough understanding of the operation, the system components and their relationship to a complete AP24 autopilot system.

In this manual, names of menu commands, dialog box text and keys are written in boldface (e.g. Main menu,

Setup command, Left key).

Important text that requires special attention from the reader is emphasized as follows:

Used to draw the reader’s attention to a comment or some important information.

Used when it is necessary to warn personnel that a risk of damage to the equipment or hazard exists if care is not exercised.

2 | AP24 Manual

Content

1 System description ..................................... 7

1.1 General ..................................................7

1.2 System components .................................8

1.3 AP24 Control Unit.....................................8

1.4 Autopilot Computer ..................................9

1.5 Rudder Feedback unit ...............................9

1.6 Heading Sensors ......................................9

1.7 Optional equipment ................................ 10

1.8 Software record ..................................... 10

2 Operation.................................................. 11

2.1 Overview .............................................. 11

2.2 ON/OFF ................................................ 14

2.3 Backlighting .......................................... 15

2.4 Standby mode ....................................... 16

2.5 Automatic steering ................................. 17

2.6 NoDrift mode......................................... 35

2.7 Navigating with the AP24 ........................ 36

2.8 Wind vane steering (sailboats) ................. 40

2.9 Wind steering and navigation (sailboats) ... 43

2.10 Data pages.......................................... 46

2.11 Multiple station system ......................... 47

3 Main menu ................................................ 49

3.1 Data pages setup ................................... 50

3.2 Setup menu .......................................... 52

AP24 Manual | 3

4 | AP24 Manual

3.3 Remote lock .......................................... 63

4 Setup at installation.................................. 65

4.1 First time turn on ................................... 65

4.2 Installation Menu ................................... 66

4.3 Service Information................................ 96

5 Alarm system............................................ 99

5.1 Alarm indication..................................... 99

5.2 Acknowledging an alarm ....................... 100

5.3 Viewing active alarms ........................... 100

5.4 Alarm codes ........................................ 100

6 Troubleshooting...................................... 103

6.1 SimNet status...................................... 103

6.2 System data........................................ 103

6.3 Resets ................................................ 104

6.4 Alarms ............................................... 105

7 Maintenance ........................................... 109

7.1 General .............................................. 109

7.2 Control unit......................................... 109

7.3 Autopilot Computer .............................. 109

7.4 Rudder Feedback ................................. 109

7.5 Compass............................................. 110

7.6 Drive unit ........................................... 110

7.7 Exchange of software program............... 110

8 Optional equipment ................................ 111

8.1 R3000X Remote Control (NFU)............... 111

8.2 S35 Steering Lever (NFU)...................... 112

8.3 JS10 Joystick (NFU).............................. 112

8.4 AP24 with MSD50 Stern Drive unit.......... 112

9 Glossary.................................................. 115

10 Index .................................................... 119

AP24 Manual | 5

6 | AP24 Manual

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1 System description

1.1 General

Congratulations on the purchase of your new Simrad

AP24 autopilot system and thank you for selecting what we feel is the most advanced autopilot system available on the market today.

The Simrad AP24 autopilot represents yet another step forward in autopilot technology providing leisure boats between 30 and 50 feet with a host of features.

The autopilot system can be expanded and enhanced with a selection of options and accessories.

The brain in the AP24 autopilot system is the single

"intelligent" autopilot computer that communicates on the proprietary SimNet data and control network to establish a reliable digital communication and power distribution between the units in the autopilot system as well as other Simrad products.

System description | 7

1.2 System components

AP 24

AP24

Control Unit

MODE 10

MENU

AUTO

TURN

STBY

PWR

Termination plug

Autopilot

Computer

Compass

Multijoiner

5,5 m

12/24V Motor supply

Drive unit

12V SimNet supply

(SimNet cable without terminator)

5 m

RF25 Rudder Feedback

Figure 1-1 AP24 Basic system layout

Non SimNet

SimNet

1.3 AP24 Control Unit

A compact autopilot control for panel, bulkhead or bracket mounting. A multifunction LCD display with two-color backlighting presents readout of autopilot and navigation data, tactile keys provide simple and precise operation. It has two SimNet connectors for system interconnection and control, expansion and data sharing with other Simrad products. An NMEA2000

Adapter Cable is available for interface through a

SimNet port.

Multiple control units can be added to the system by daisy-chaining or drop cable to the SimNet network.

8 | System description

1.4 Autopilot Computer

The autopilot computer is the main unit in the AP24 autopilot system. It contains the steering computer and drive electronics for the drive unit motor and clutch and provides interface to other system components. Two models, AC12 and AC42 are available.

1.5 Rudder Feedback unit

RF25 Rudder Feedback Unit

The RF25 is designed for connection to the SimNet network. It comes with transmission link and 5 m (16 feet) of SimNet cable with connector.

The RF25 provides rudder angle output to a separate rudder angle indicator also when the autopilot is switched off.

RF300 Rudder Feedback Unit (optional)

The RF300 is designed for connection to the autopilot computer. It comes with transmission link and 10 m (33 feet) of cable. RF300 has a different signal format and does not offer the same accuracy as RF25.

With an RF300 as rudder feedback there is no output to separate rudder angle indicators when the autopilot is off.

1.6 Heading Sensors

RC42 Rate Compass

RC42 is a fluxgate compass with an integrated rate of turn sensor. It provides a significant improvement to the dynamic performance of both the autopilot and a stabilized radar display. A 5 m (16 feet) SimNet cable with connector is attached.

System description | 9

FC40 Fluxgate Compass (optional)

This is a compact magnetic heading sensor using a floating ringcore in a fluxgate coil. A 5 m (16 feet)

SimNet cable with connector is attached. The dynamic performance is second to the RC42

1.7 Optional equipment

See page 109

1.8 Software record

When the system is switched on, a status display shows

the software version for the control unit. See page 14.

Software version Description

SW 1.1.00. First issue

10 | System description

2 Operation

An autopilot is a very useful navigational aid, but

DOES NOT under any circumstances replace a human navigator

Do not use automatic steering when:

• In heavy traffic areas or in narrow waters

• In poor visibility or extreme sea conditions

• When in areas where use of autopilot is prohibited by law

When using an autopilot:

• Do not leave the helm unattended

• Do not place any magnetic material or equipment near heading sensor used in the autopilot system

• Verify at regular intervals course and position of vessel

• Always switch to Standby mode and reduce speed in due time to avoid hazardous situations

2.1 Overview

Figure 2-1 AP24 Front Panel

Operation | 11

Key

PWR

Description

Power ON-OFF / Light key

STBY

AUTO

MODE

TURN

MENU

Standby key

Engage Standby mode

Auto key

Engage Auto mode

Mode key

Activate mode (soft) keys

Action according to the softkey symbol

Turn key

Enter turn sub-menu

Tack or gybe in Wind mode

Action according to the softkey symbol

Menu/Enter key

Enter Main menu

Enter value, Confirm, OK

Left 1 key

Back, Left, Cancel, Exit

Long press: Return to Main page (operation level 1)

Adjust the commanded course or wind angle 1 degree

Enable port power steering

Right 1 key

Next, Right

Adjust the commanded course or wind angle 1 degree

Enable starboard power steering

Left 10 key

Adjust the commanded course or wind angle 10 degrees

Enable port power steering

Action according to the softkey symbol

Right 10 key

Adjust the commanded course or wind angle 10 degrees

Enable starboard power steering

Action according to the softkey symbol

12 | Operation

Up key

Up in menu or list box, Increase

Down key

Down in menu or list box, Decrease

Softkeys

When the basic operation of the keys is changed, softkey symbols will be displayed right above the keys to indicate the alternate function.

Symbol

The following softkey symbols are used:

Action Symbol Action Symbol

Increase

Cancel

Enter

Back

Down

Decrease

Increase

Decrease

Night backlighting

Day backlighting

Present information

Action

Shallow to stbd

Shallow to port

Installation

Select

NoDrift mode

Select NAV mode

Select WIND mode

Symbols

Inactive unit, disabled data page

Alarm reminder

Locked

Operation | 13

Operational modes

The AP24 system is capable of the following primary steering modes: STBY (power steering), AUTO, NoDrift,

NAV, WIND and WIND

NAV

STBY and AUTO modes have dedicated keys while the other modes are available via softkeys under the MODE key.

The WIND

NAV mode.

mode is only available when in the WIND

Each mode provides you with a multifunction mode display.

User adjustable settings are found in the AP24 Main

menu (page 49).

Alarms

Alarms are presented in plain text to alert you of system and external data failure conditions. Alarms are both

audible and visual. The alarm listing is on page 105.

Transfer of command

In a multistation system the command can easily be transferred from one unit to another by pressing the active mode key.

AP24 units not in control will display the icon.

Advanced operation

Refer to the Setup item in the Main menu page 52 for

information.

2.2 ON/OFF

At first time turn on see page 65.

A single press on the PWR key turns the autopilot system on and presents the start-up pages.

14 | Operation

• Product name

• Software version and release date

Software version and release date are examples only.

After approximately 5 seconds, the system is operative and the unit that was turned on will show the Standby mode display. Other units in a multistation system will display . Control is transferred to any single unit by pressing its STBY key.

A long press on the PWR key activates the power down dialog box and the autopilot goes to STBY mode before it is turned off after 3 seconds.

In an emergency it is possible, on a multistation system, to turn OFF the system at any control unit by pressing the PWR key.

Please note that even if the autopilot is turned off, a small amount of current is drawn from the batteries unless you throw the circuit breaker.

PWR

2.3 Backlighting

The display backlighting may be adjusted at any time.

1 Press the PWR key

PWR

The Light level overlay window will be displayed on top of the current view

2 Press one of the keys, as described below, to change the display backlighting: a The PWR key to increase the light level by one step

Operation | 15

b The Up/Down softkeys to increase/decrease the light level by one step c The Day/Night softkeys to toggle between day and night profiles

If no adjustment is performed within 3 seconds, the Light level overlay window will close.

For contrast and day/night settings, refer to page 58.

2.4 Standby mode

STBY mode is the mode that is used when steering the boat at the helm.

Display information:

• Standby mode

• Current heading 346°M

• Compass source: FC40

• Rudder angle 04° to starboard

See page 75 about VRF.

Power steering (NFU)

In Standby mode, press any of the PORT or STBD keys.

The Non-Follow-Up (NFU) display is presented and the rudder will move as long as the key is pressed.

Activates PORT rudder command

Activates STBD rudder command

When a NFU steering lever or remote control is operated, other control units show

(inactive). Refer to section 8

for operation of NFU steering levers or remote controls.

16 | Operation

Alternating rudder angle bargraph

If your autopilot is driving a Simrad

MSD50 Stern Drive, the rudder angle display will after turn-on alternate between 10 degrees port and starboard to indicate that the

(rudder) zero point need be set.

Refer to page 113 to set the zero point.

Rudder angle bargraph

When the autopilot is operating on

Virtual Rudder Feedback (VRF), the rudder angle bargraph is empty.

2.5 Automatic steering

AUTO (Compass) mode

When the AUTO key is pressed, the AP24 automatically selects the current boat heading as the set course and maintains the rudder angle. This gives a bumpless transfer at the mode change.

• Automatic steering mode

• Set course: 340 degrees

• Compass reading: 340°M

• Heading source: FC40

• Rudder angle: 01° to starboard

• Speed: 6.8 kn (from log)

• Steering parameter: LO-M

Operation | 17

The AP24 will keep the boat on the set course until a new mode is selected or a new course is set with these keys.

Port course adjust,

1°/press

Port course change,

10°/press

Stbd. course change

10°/press

Stbd. course adjust

1°/press

Once the course is changed to a new set course, the boat will automatically turn to the new heading and maintain the new course.

STBY

Heading capture

When in AUTO or NoDrift mode (page 35) heading

capture allows you to automatically cancel the turn you are in by an instant press on the AUTO key or the

NoDrift softkey. The autopilot will cancel the turn to continue on the heading read from the compass the very moment you pressed the AUTO key or the NoDrift softkey. This is a useful feature if you are not sure of the exact turn you have to make to hit e.g. an inlet or a dock.

• Automatic steering mode

• New “captured” heading: 305°

• Compass reading: 311° M

(magnetic) or T (true)

Regain manual steering by pressing the STBY key.

18 | Operation

Dodging

The AP24 has no specific dodge key. Simply press STBY and power steer or use the helm to pass any obstacle.

When you return to AUTO mode within 60 seconds the following display is shown, offering two alternatives:

Go back to AUTO mode on previous set course

AUTO

Go to AUTO mode with current heading as set course

If your dodging maneuver takes more than 60 seconds, the autopilot will automatically continue on the current heading.

Control of steering performance

When operating in an automatic mode the AP24 utilizes two different sets of steering parameters (HI/LO). The parameters control the response of the boat at different speeds or wind directions. The two parameter sets can be automatically or manually selected, and each set can be manually adjusted (response adjust).

The speed at which the autopilot automatically changes from LO to HI parameters (or opposite) is determined by the Transition Speed set in the Installation/

Commissioning/Seatrial menu, page 83. See diagram on

next page.

At no speed input the autopilot defaults to LO steering parameters when engaging an automatic mode from

STBY. This is a safety feature to prevent oversteering.

Operation | 19

Speed

HI res po nse

pa ram ete rs

re spo nse

pa ram ete rs

Transition to LO parameters with increasing speed: 10 Knots

Transition Speed set to 9 Knots

Transition to HI parameters with decreasing speed: 8 Knots

Display legend

HI-A High response parameters set automatically

LO-A Low response parameters set automatically

HI-M High response parameters set manually

LO-M Low response parameter set manually

Power boats

On power boats the automatic selection of HI or LO is determined solely by the speed of the boat as shown in the diagram above.

Sailboats

When sailing in WIND mode, the parameter set is determined by the speed of the boat and the direction of the wind as per below.

20 | Operation

So if you loose too much speed e.g. when tacking, the parameters will change to HI to gain sufficient rudder response. This should be observed when setting the

transition speed on sailboats. See also Wind response on page 21.

Response adjust

The Autotune function in the AP24 is so refined that the majority of boats will need no further adjustments of the steering parameters. On some boats, however, or at particular sea conditions a fine tuning of the steering parameters may improve the performance of the autopilot.

The Response control allows you to make this fine tuning for each of the two (HI/LO) parameter sets. The response can be set to nine levels. Level 4 is default with parameter values as set by the Autotune function. If no

Autotune is made (not recommended) the level 4 values are the factory default values.

A low response level reduces the rudder activity and provides a more “loose” steering.

A high response level increases the rudder activity and provides a more “tight” steering.

A too high response level will make the boat start S-ing.

When you access the RESPONSE page the highlighted

Adjust parameter is the one that is active.

MENU

Adjustment of HI and LO values can be performed even with the boat out of the water.

Range Change per step Default

1-9 1 4

Operation | 21

Wind response (sailboats)

Verify that the difference between Course To Steer (CTS) and the actual heading is at an acceptable minimum.

If the difference between the set wind angle and the actual wind angle is too big, increase the Wind

response to reduce the difference.

If the actual wind angle is S-ing around the set wind angle, or the rudder activity is too high, the ‘Wind response’ should be reduced.

22 | Operation

MENU

Range Change per step Default

1-9 1 4

Selection of HI/LO parameters

1 1

MENU

The “Manual select” item has three alternatives:

Auto – HI – LO.

• Auto is automatically set by speed input

• HI or LO must be set manually when there is no speed input

The sub-headline in the display shows the active parameter set and how it is selected.

Pattern steering (power boats)

The autopilot offers a number of different pattern steering features when in AUTO mode. There is a one minute time-out between selecting a turn pattern and starting the turn. During the time-out period the autopilot will maintain the set course.

When steering in a turn pattern you may at any time adjust the variables by pressing the key.

To exit a turn pattern simply press the AUTO key.

U-Turn

U-Turn changes the current set course to be 180 degrees in the opposite direction.

This feature is very useful in a man overboard situation and whenever you want to steer back on a reciprocal heading.

TURN

Press either the or softkey to select the direction to make the U-Turn and start the turn.

Boat makes starboard U-turn

Operation | 23

24 | Operation

C-turn

The autopilot provides a continuous turn feature when in

AUTO mode. This may be used for circling fish or a particular object on the seabed.

C-turn makes the boat turn in a circle with a constant rate of turn. The user decides whether the C-turn should be made to port or to starboard.

To enter C-turn mode:

TURN

Press the or softkey to select the direction in which to make the C-turn and start.

The turn rate (ROT) can be adjusted before the turn is initiated and during the turn. Increasing the turn rate yields to a smaller circle and vice versa.

Turn parameter

Rate of turn

Range

10 - 600

Change per step

Default Units

90 °/min

Spiral-turn

The spiral-turn feature may also be used for circling fish or when searching a particular object on the seabed.

Spiral-turn makes the boat turn in a spiral with a decreasing or increasing radius.

To enter Spiral-turn mode:

TURN

The “initial” radius can be set before the turn is started.

Press either the or softkey to select the direction in which to make the spiral-turn and start.

During the turn the “change in radius” can be adjusted and the number of feet or meter is how much the radius is changed for each circle turned.

If the “change radius” is set to zero, the boat will turn in a circle.

Operation | 25

Negative values indicate decreasing radius while positive values indicate increasing radius.

Increasing radius

Turn parameter

Initial radius

Decreasing radius

Range

33 ft - 3281 ft

10 m - 1000 m

-164 ft - +164 ft

-50 m - +50 m

Change per step

Default

164 ft

50 m

66 ft

20 m

Change of radius per turn

The unit for radius is the same as the unit set for depth

(feet or meter).

26 | Operation

Zigzag-turns

To enter zigzag-turn mode:

TURN

The course change can be set before the turn is initiated

(2-70°).

Press either the or softkey to select the direction in which to make the first course change and start.

While sailing in a zigzag pattern you can alter the course change, leg distance, and the main course. An arrow shows the direction of the next course change.

Operation | 27

Initial course change 20°

Main course

Course change 40°

Turn parameter

Course change

Leg distance

Range

4° - 140°

82 ft - 9843 ft

25 m - 3000 m

Leg distance

Change per step

Default

28°

1641 ft

500 m

The unit for leg distance is the same as the unit set for depth (feet or meter).

Square-turn

The square-turn feature in AUTO mode can also be made as rectangle or any pattern where the next turn is 90°.

To enter Square-turn mode:

TURN

28 | Operation

Press either the or softkey to select the direction in which to make the first course change and start.

Leg distance

You can at any time change the main course.

You can also at any time change the distance of the leg until the boat makes a new 90° turn.

Turn parameter

Leg distance

Range

82 ft - 9843 ft

25 m – 3000 m

Change per step

Default

1641 ft

500 m

The unit for leg distance is the same as the unit set for depth (feet or meter).

Operation | 29

30 | Operation

Lazy S-turn

To enter Lazy S-turn mode:

TURN

The course change can be adjusted before the turn is initiated (2-80°).

Press either the or softkey to select the direction in which to make the first course change and start.

While in a Lazy S pattern you can alter the course change magnitude, turn radius and the main (average) course.

An arrow shows the direction of the turn.

Adjust course change and radius as follows:

Initial course change

Course change

Higher radius

Main course

Lower radius

Turn parameter

Course change

Radius

Range

4° - 160°

16 ft - 1641 ft

5 m – 500 m

Change per step

Default

28°

164 ft

50 m

The unit for radius is the same as the unit set for depth

(feet or meter).

Operation | 31

Depth Contour Tracking, DCT

With input from an echo sounder, the autopilot can be set to steer the boat to a set depth. This is very useful if you want to follow a depth contour. Make sure you have depth reading available in the system.

Smooth seabed Rocky waters

Do not use this feature unless the seabed is suitable. Do not use it in rocky waters where the depth is varying significantly over a small area.

TURN

32 | Operation

The actual depth reading is shown on the display.

Steer the boat to the depth you want to track and in the direction of the depth contour (main course). When the wanted depth is shown in the display, activate the depth contour steering with the or softkey (any of the two). Use the key when it is shallow to port or the key when it is shallow to starboard.

Main course

This should be the main (average) direction of the depth contour you want to follow. If the contour line is making a big change in direction, you should manually adjust the set course to the new direction. This will result in a quicker response from the autopilot. If the course is not adjusted, the autopilot will need more time to turn and steer the boat back to the reference depth.

The sub screen has the following adjustments:

Depth gain

The autopilot is tracking the depth by computing an xtrack error when the boat is off the reference depth. This error automatically adjusts the set course to bring the boat back on track.

Use the gain control to have a firm or smooth response to the variation in depth.

Operation | 33

34 | Operation

Contour Cross Angle (CCA)

With this parameter you can make the boat lazy s across your reference depth. With the CCA set to zero there is no S-ing. The CCA is an angle that is added to or subtracted from the set course. Each time the boat crosses the reference depth, the sign (+/-) of the CCA is changed and makes the boat turn to cross the reference depth contour in the opposite direction. The larger the

CCA the bigger the turn.

CCA set to 15 degrees.

Approaching reference depth from port

Reference depth

CCA set to 15 degrees.

Approaching reference depth from starboard

Turn parameter

Range

Main course

Depth gain

Contour Cross Angle

0° - 359°

5 - 95

0 - 50

Change per step

Default

–

Reference depth

The reference depth is captured when the DCT

is activated. To change the reference simply use the Up or

Down key.

Tacking in Auto mode (sailboat)

The tack function is only available when the system is set up for SAIL boat type in the installation setup.

Tacking in AUTO mode is different from tacking in WIND mode. In AUTO mode the tack angle is fixed and can be set in the Setup/Sailing menu. Default tack angle is

100°.

Tacking should only be performed into the wind and must be tried out in calm sea conditions with light wind to find out how it works on your boat. Due to a wide range of boat characteristics (from cruising to racing boats) the performance of the tack function may vary from boat to boat. Except for the fixed course change and the difference in displays, the procedure is similar to that of

the U-Turn described on page 22.

TURN

For sailboat only

Boat makes starboard tack

2.6 NoDrift mode

The NoDrift mode is an alternative to route steering in

NAV mode, and is automatically entered when you press the MODE key followed by the softkey.

The data source when operating in NoDrift mode is the

Position (Pos) source. To operate in NoDrift mode your

GPS/chart plotter must be turned on.

Operation | 35

MODE

Unlike when in Auto mode the autopilot will steer the course unaffected by wind and current when the NoDrift mode is engaged.

The course to steer to (bearing line) can be changed the same way as when changing course in Auto mode.

• Compass heading: 345° M

• Rudder Angle: 01 to starboard

• Speed: 6.8 kn from the log

• Steering parameter: HI-A

2.7 Navigating with the AP24

The AP24 has the capability to use steering information from an external navigator (GPS, chart plotter) to direct the boat to a specific waypoint location, or through a route of waypoints. The information received from the navigator automatically changes the course to steer to keep the boat on the track line and direct the AP24 to the destination waypoint.

If the AP24 is connected to a navigation receiver that does not transmit a message with bearing to next waypoint, it will steer on Cross Track Error (XTE) only. In that case you have to revert to AUTO mode at each waypoint and manually change set course to equal bearing to next waypoint and then select NAV mode again.

To obtain satisfactory navigation steering, the following points must be fulfilled prior to entering the NAV mode:

• The AP24 autosteering must be tested and determined satisfactory

• The navigation receiver (GPS, chart plotter) must be in full operating mode with adequate signal characteristics for valid position and navigation data

36 | Operation

• At least one waypoint must be entered and selected as the current “Go to” waypoint

The data source when operating in NAV mode is the

Navigation (Nav) source. It is normally the same as the

Position source (GPS/chart plotter) see page 55.

Navigational steering should only be used in open waters.

When selecting NAV mode, the AP24 maintains the current set course and prompts the user to accept the course change towards the destination waypoint.

Press the MODE key followed by the to activate the NAV prompt display.

mode softkey

MODE

The prompt display shows the name of the next waypoint

(WP), the bearing of the track line (BWW) from the previous waypoint to the destination waypoint, the required course change (CHG) and the direction in which the boat will turn.

If only one waypoint has been entered the bearing will be from the present position to the destination waypoint.

• NAV mode

• Course to steer (CTS): 014 is set internally by the autopilot to steer the boat onto the track line and maintain the bearing

• Cross Track Error (XTE): 0.014 nm

• Boat symbol illustrating whether the boat is to port or starboard of planned track

• Compass heading: 345° M

Operation | 37

STBY

• Next waypoint: Eigeroy

• Bearing to next waypoint (BTW): 014°M

• Distance to next waypoint (DTW): 124.7 nm

• Steering parameter: HI-A

For Cross Track Error, the number of decimals shown depends on the output from the GPS/chart plotter. Three decimals give a more accurate track keeping.

When operating the AP24 in NAV mode to steer through a route of waypoints, the AP24 will steer to the nearest waypoint in the direction of the route after you accept the

NAV mode prompt. When you arrive at the waypoint, the

AP24 will output an audible warning, display an alert screen with the new course information, and automatically change course onto the new leg.

If the required course change is more than the NAV change limit (default 10

°

), you have to verify that the upcoming course change is acceptable. This is a safety

feature. See page 75 on how to change the ‘NAV change

limit’.

Press the softkey to verify course change larger than 10°.

Alert screen

If no verification is made, the AP24 will continue on the current set course in

AUTO mode.

Regain manual steering by pressing the STBY key.

38 | Operation

Setting the waypoint arrival circle

For route navigation it is recommended to use automatic waypoint shift at a set waypoint arrival circle.

The arrival circle should be adjusted according to boat speed. The higher the speed, the wider the circle. The intention is to make the autopilot start the heading change in due time to make a smooth turn onto the next leg.

The figure below may be used to select the appropriate waypoint circle on the GPS/chart plotter.

Example: With the speed of 20 knots you should use a waypoint circle with radius 0.09 nm.

The distance between any waypoints in a route must not be smaller than the radius of the waypoint arrival circle when using automatic waypoint shift.

Operation | 39

Selecting a different navigation source

If you have more than one navigator connected to the

AP24, you will be able to choose any for navigation. Refer to the ‘Sources’ item in the Setup menu for details on

how to select a different navigator (page 56).

2.8 Wind vane steering (sailboats)

The WIND mode is only available if the system has been set up for SAIL-boat in the Installation Menu.

Prior to entering WIND mode the AP24 system should be operating in AUTO, with valid input from the wind transducer.

Enter the WIND mode by pressing the MODE key followed by the softkey.

MODE

The wind display presents the following information:

• Wind (vane) mode

• Set wind angle: 010 degrees from starboard

• Measured wind angle: 009°A (apparent) or T (true)

• Course to steer (to maintain set wind angle): 345°

• Heading: 344° M (magnetic) or T (true)

• Rudder angle: 00° to starboard

• Speed from log: 6.8 kn

• Parameter: HI-A (High value, automatic set)

The set course to steer (CTS) and set wind angle are entered from the compass heading and the wind transducer at the moment the WIND mode is selected.

From that point the autopilot will change the course to maintain the wind angle as the wind direction may change.

40 | Operation

STBY

If the cumulative shift of the wind direction exceeds a set limit a WIND SHIFT alarm will sound.

Adjustments to the set wind angle is as per below.

Steer port,

1°/push

Steer port,

10°/push

Steer stbd.,

10°/push

Steer stbd.,

1°/push

Regain manual steering by pressing the STBY key.

Tacking in Wind mode

Tacking in WIND mode as compared to AUTO mode can be performed when sailing with apparent or true wind as the reference; the true wind angle should be less than 90 degrees.

The tacking operation will immediately mirror the set wind angle to the opposite side of the bow. A tack window will appear on the display. The rate of turn during the tack will be given by the ‘Tack time’ parameter set in

the Setup/Sailing menu (page 61). The tack time is also

controlled by the speed of the boat to prevent loss of speed during a tack.

A quick press on the TURN key will activate the tack function and the boat will start turning to the opposite wind angle.

A new press on the TURN key after the Tack window appears, will interrupt the tack operation and the boat will return to the previous set wind angle.

Operation | 41

TURN

Gybing

Gybing is possible when the true wind angle is larger than 120°.

TURN

The time to make a gybe is determined by the speed of the boat to make it as quick as possible within control.

Tack and gybe prevent

When beating and running, using the autopilot is most critical.

If the sails are unbalanced when beating, yaw forces from the sails can drive the boat into the wind. If the boat is driven beyond the set minimum wind angle (see page

90), the thrust from the sails will suddenly disappear and

reduces the boat speed. Hence the boat will be more difficult to steer because the rudder will become less effective.

42 | Operation

The tack prevent function in WIND mode has been implemented to avoid such situations. It will react immediately when the apparent wind angle becomes 5° less than the set minimum wind angle, and more rudder will be commanded.

When running, it is difficult to steer the boat with waves coming sideways or from behind. The waves may yaw the boat into an unwanted gybe; this can be hazardous for both the crew and the mast.

The gybe prevent function will be activated when the actual apparent wind angle becomes greater than 175° or gets opposite to the set wind angle. More rudder will be commanded to prevent an unwanted gybe.

The tack and gybe prevent functions are not a guarantee against getting into a hazardous situation. If the effect of the rudder and/or drive unit is not adequate, it may happen. Pay particular attention in such situations.

2.9 Wind steering and navigation

(sailboats)

The autopilot can also steer the boat given both wind data and track data from a GPS/chart plotter. In this mode called WIND

NAV

mode the automatic steering is based on a set of criteria (see bullets next page). Wind steering and navigation is activated by pressing the

MODE key when in Wind mode [1] followed by the mode softkey. The initial course change (CHG) needed to navigate towards the active waypoint, is calculated by the autopilot. The autopilot will utilize the current wind direction in these calculations and the change of course is accepted by pressing the softkey [2].

Operation | 43

44 | Operation

Operating in WINDNAV mode

Refer to

Figure 2-2

which shows a scenario with a sailboat

that enters Wind

NAV

mode to sail the most efficient way to waypoint WP1.

1. The autopilot is still in Wind mode approaching mark

2 and waypoint WP1 has been entered on the chart plotter.

Wind

NAV

mode is entered and the autopilot prompts confirmation for a course change of 71 degrees to starboard.

3. The boat is now on the leg to mark 4 where a starboard tack is required to avoid running on ground. The distance to tack DTT is displayed and so is VMG to wind. Furthermore the autopilot displays course to steer and heading.

4. The tack has been initiated on the autopilot and the tack display is presented.

5. The autopilot now presents you with information about the new leg and the next tack.

6. You are about to cross the layline and the autopilot

“recommends” a new tack to Port.

7. The new tack is performed.

8. You are on the last leg directly to the waypoint. The autopilot is now keeping the boat on track (XTE) and displays bearing and distance to the waypoint.

Figure 2-2

Operation | 45

2.10 Data pages

A number of data pages can be displayed if the

information is available on SimNet (see page 103).

When one of the main mode pages are displayed, access and scroll through the available data pages by pressing the Up/Down keys.

When accessing the data pages, the last active data page will be shown first.

If you prefer to change the number of instrument pages to be available; access the Main menu/Data pages

setup.

When displaying data pages the left hand side of the screen will show the following information depending on mode:

Standby mode

Heading

Heading source

Auto mode

Set course

Heading

Heading source

HI parameters, set automatically

Nav/NoDrift mode

Course to steer

Cross Track Error

(XTE)

HI parameters, set automatically

Wind mode

Set wind angle

Actual apparent wind angle

HI parameters, set automatically

Wind

NAV

mode

Set wind angle

Actual apparent wind angle

HI parameters, set automatically

46 | Operation

Available data pages

Main mode screen

2.11 Multiple station system

In normal operation control is accessible from every control unit connected to the AP24 system. One control unit is "active" and provides the user with access to all functions. All remaining control units are "inactive" and have no effect on course changes. A single press on any of the mode keys on an "inactive" control unit will allow transfer of command and make it

"active".

Inactive unit

Operation | 47

48 | Operation

Blank page

3 Main menu

In the Main menu you will find items for operation, setup and installation of the autopilot. The Service menu item presents you with various system information and access to the Demo mode.

LEVEL 2 LEVEL 3 LEVEL 4 MAIN MENU

Response

Data pages setup

Setup

Installation

Service

Remote lock

Enable/Disable

Restore data pages

Damping

Alarms

Sources

Display

Language

Units

Seastate filter

Sailing

Commisioning

Automatic steering

Calibration

Boat type

Rudder drive

SimNet config

SimNet status

System data

Resets

Demo

About AP24

Dockside

Seatrial

Comm. status

Transition spd

Autotune

Recall autotuned

Steer to compass

Steer to wind

Steer to navigator

Boat speed

Depth

Apparent wind

Compass

Rudder feedback

Virtual feedback

SimNet groups

Instance number

Boat type

Rudder feedback

Virtual feedback

Drive voltage

Drive engage

Rudder test

Depth calibration

Steer to wind

Steer to navigator

Set rudder 0

Compass calibration

Wind calibration

Boat speed calib

Transition spd

Autotune

Calibrate w/SOG

SPD correction

Offset

Calibrate

Offset

Max stbd/port

Set rudder 0

Autopilot reset

Global reset

Setup and installation | 49

The Main menu is activated by a press on the MENU key.

The Main menu items give further access to sub menus and parameter settings.

Parameter settings are usually presented to the right, but may also be listed in an overlay window.

KEY

MENU

Unit settings presented in the window’s right column

Language settings presented in an overlay window.

The keys are used as follows to navigate in the menu system:

SINGLE PRESS

Confirm a selection/parameter setting

Go to next menu level/ parameter settings

PRESS AND HOLD

Go to previous menu level/ parameter listing

Go to previous/next menu item, increase/decrease parameter value

Return to last active data page

3.1 Data pages setup

All available data pages are enabled as default. See page

47. If you prefer to have less data pages available, pages

may be disabled.

50 | Main menu

Disabling pages

Continue to select pages and repeat the procedure if more pages are to be disabled.

Press and hold the Left 1 key to leave the menu and return to last active page.

Enabling pages

A disabled page is only visible when using the Enable/disable command, and is then indicated with a crossed rectangle.

Continue to select pages and repeat the procedure if more pages are to be enabled.

Press and hold the Left 1 key to leave the menu and return to last active page.

Main menu | 51

Enabling all pages

To restore all disabled data pages, select Restore data

pages:

3.2 Setup menu

The Setup menu contains items that the user may want to use on a less regular basis.

The following items are described:

Changing the damping factors

Alarm setup

Automatic and manual source selection

Changing the display settings

Language selection

Setting the units of measure

Adjusting the sea state filter

Changing the sailing parameters

The section assumes that the user is familiar with how to use the keys and how to maneuver in the menus. If not,

refer to Main menu, page 49 onwards.

52 | Main menu

Damping

The damping factor indicates how fast the display will respond to changes.

The higher the damping factor the more stable display reading on the instrument.

Damping of the apparent wind angle is made by the

Advanced Wind Filter (AWF) in the Autopilot Computer.

Increasing the ‘Wind damping’, will make the AWF output depend more on heading and boat speed. Decreasing the

‘Wind damping’, will make the AWF depend more on the

“raw” apparent wind angle data.

The speed input to the AWF is Speed Over Ground (SOG).

If SOG is not available, the AWF will use speed through water. If none of these are available, the AWF will use a boat speed that is 1.5 times the Transition Speed.

Range

0 - 9

Change per step

Default

Main menu | 53

Alarms

The AP24 may be set up to sound an alarm if vessel or environmental parameters exceeds preferred values.

The alarm monitoring is disabled by setting the value to

Off.

Shallow water

The setting of the alarm is global and can be made on any Simrad unit that has this function implemented.

Range Change per step Default Units

Off – 320 ft

(Off – 100 m)

1.6 – 5: 0.1 ft

5 – 10: 0.5 ft

10 – 50: 1 ft

50 – 100: 5 ft

100 – 320: 10 ft

(0.5 – 5: 0.1 m)

(5 – 10: 0.5 m)

(10 – 50: 1 m)

(50 – 100: 5 m)

Wind shift

The wind shift alarm monitors the wind angle. The reference angle is set when the alarm is turned on and when the product is turned on. The reference wind angle is reset to present wind angle when the commanded (set) wind angle is changed on the autopilot and when a wind shift alarm is acknowledged.

The wind shift reading is presented on the ‘Wind shift’ data page and shows the change of wind angle with reference to the (absolute) wind direction.

54 | Main menu

Range

Off, 5-90°

Change per step

Alarm status

Displays a list of present alarms.

Default

Off

Setup data sources

A data source can be a sensor or a device connected to

SimNet providing data to other SimNet devices. Data can be of different type such as compass data, apparent wind data, calculated wind data, depth data, etc. A given data type will only be provided from one device to the other devices organized in a SimNet Source group (Ref.

Installation/ SimNet groups, page 93).

At the first time turn on of a group of SimNet interconnected products (SimNet Source Group), data sources are automatically selected from an internal

SimNet priority list. If a data source is connected to

SimNet after the first time turn on, this will be identified and automatically selected if no other data source already is selected for the given data type.

It is only required to update the SimNet source selections if an alternative source is made available for a given data type and this source has not been selected automatically.

The data types and their respective data sources used in the products are listed on the source page in the products.

If no selection is made for a data type, ‘- - -‘ is displayed instead of the device name or acronym.

SimNet will automatically select Position source and

Navigation source from the same GPS/chart plotter. If you want them to be different you have to change them manually.

Main menu | 55

Automatic source update

The Auto select function is mainly for situations where the automatic source selection needs to be updated because a selected data source is not supplying data or has been physically replaced with another one. The update secures that the existing source selections are valid and maintained. Missing sources are either automatically exchanged with an alternative source from the list of available sources for the given data type or the replacing source is selected. If a source is no longer available for the given data type, the display will show

‘- - -‘ instead of the source acronym.

If more than one source is found for each data type, the preferred source may be manually selected.

Manual source selection

Data sources can also be selected manually. All devices providing data of the given type will be listed in a device list. Highlight the data type and press the

key to display the list of available devices.

Confirm selection of the highlighted device.

Exit without selecting

56 | Main menu

See information about the selected data source.

For data types which can be calibrated, an overlay screen displaying the data from the selected data source will appear first (Ref. Installation/Calibration).

Enter the Calibrate and Offset menu.

(Ref. Installation/Calibration).

Proceed to display a list of available sources for the given data type.

Display

The display is controlled by the Contrast setting and two user profiles that can be individually adjusted.

For each profile you can:

Adjust light level

Adjust the light color

Invert the display

The profiles are Day profile and Night profile. The profiles can be optimized for readability under different

Main menu | 57

light conditions, and you can quickly switch between the two using the PWR key and the softkeys. Refer to

Backlighting, page 15.

Display contrast

The contrast controls the difference between the text/graphics and the display background. Level 9 gives the highest contrast.

Range Change per step Default

0 - 9 1 4

Day and night profiles

The day and night settings controls the display background, the light color and light level for the display and the keys.

58 | Main menu

Setting

Light level

Light color

Invert display

Range

Off – 9

White/red

Yes/No

Change per step

Default

White (Day)

Red (Night)

Language

The language is set when the autopilot is turned on for

the first time. Refer First time turn on, page 65.

It is however possible to change the language at any time.

The following languages may be selected:

Deutch (German)

English (English)

Español (Spanish)

Français (French)

Italiano (Italian)

Nederlands (Dutch)

Norsk (Norwegian)

Svenska (Swedish)

The language names are listed alphabetically in their own language.

Default language: English

Main menu | 59

Units of measure

Parameter

Boat speed

Wind speed

Distance

Depth

Heading

Temperature

Options

− kn

− km/h

− mph

− kn

− m/s

− mph

− nm

− km

− mi

− m

− ft

− °M

− °T

− °C

− °F

Default

kn kn nm ft

°M

°F

The display unit for heading data is not solely determined by the user. If true heading is wanted but the selected compass is a magnetic compass, then the magnetic variation must be available from a position source. The same applies if the user wants to read magnetic heading but receives true heading from the compass.

If magnetic variation is required but not available, the compass decides which unit to display.

60 | Main menu

Sea state filter

The Seastate filter is used to reduce rudder activity and autopilot sensitivity in rough weather.

OFF:

AUTO:

MANUAL:

Seastate filter is disabled. This is default.

Reduces rudder activity and autopilot sensitivity in rough weather by an adaptive process. The AUTO setting is recommended if you want to use the Seastate filter.

Linked to the Response control setting in the Main menu. It may be used to manually find the optimum combination of course keeping and low rudder activity in rough but steady sea conditions.

Sailing

‘Sailing’ is only available in the menu if ‘Boat type’ is set

to ‘Sail’ in the Installation menu (see page 67).

Tack time

When performing a tack in WIND mode, the rate of turn

(tack time) can be adjusted. This will give single-handed sailors time to handle the boat and the sails during a tack.

Main menu | 61

62 | Main menu

A turn performed without shifting wind side, will also be made at a controlled turn rate.

Range

2 - 50

Change per step

Default

Units

second

Tack angle AUTO

In AUTO mode the set tack angle replaces a similar change of the set course using the starboard and port keys.

Range

50 - 150

Change per step Default

1 100

Units

Wind function

With ‘Wind function’ set to ‘Auto’, the autopilot will automatically select between apparent and true wind steering. ‘Auto’ is default and recommended for cruising.

When the boat is running, it will also be surfing on the waves. This may lead to significant changes in boat speed, hence changes in apparent wind angle. True wind steering is therefore used when running, while steering to apparent wind is used when beating or reaching.

‘Apparent’ wind steering is preferred when you want to achieve maximum boat speed. The autopilot tries to maintain a constant apparent wind angle to get maximum thrust from a given trim of the sails.

When sailing in closed waters, the apparent wind angle may change temporarily due to wind gusts. It may then be preferred to sail to the true wind; select ‘True’.

Range

Auto – Apparent - True

Default

Auto

VMG optimizing

Optimizing the VMG to wind will be active for 5–10 minutes after a new wind angle has been set and only when beating.

‘VMG’ will be displayed in the upper left corner above the mode index when the VMG optimizing feature is active.

Range

Off - On

Default

Off

Layline steering

Layline steering is useful when navigating. Cross Track

Error (XTE) from the navigator will keep the boat on the track line. If the XTE from the navigator exceeds 0.15 nm, the autopilot will calculate the layline and track towards the waypoint.

‘XTE’ will be displayed in the upper left corner above the

mode index when layline steering is active (page 44).

Range

On - Off

Default

3.3 Remote lock

The "Remote lock" function is a safety feature included in the AP24 system. It will disable all other control units.

When the "Remote lock" function is in use, no transfer of command can take place; only the active control unit stays in command.

The "Remote lock" function is enabled as follows:

Main menu | 63

On the active control unit a icon will alternate with the mode index.

The "locked" control units in the system will show:

The Lock function is disengaged by one of the following actions:

• The active control unit unlocks the other ones and makes them inactive:

• The system is switched OFF by any control unit (press

PWR key for 2-3 seconds)

64 | Main menu

PWR

4 Setup at installation

4.1 First time turn on

Before attempting to turn on the AP24 and perform an

Installation Setup, the hardware installation and electrical connections must be completed in accordance with the installation instructions.

When the AP24 is powered on for the first time, the instrument will run through an automatic start-up sequence presenting:

Product name, software version, release date

Language selection

Automatic data source selection

The display will show which items of the installation setup that needs to be done and those already done.

Press the softkey to continue with the installation setup according to the next chapters.

Setup and installation | 65

4.2 Installation Menu

The installation settings must be performed as part of the commissioning of the AP24 system. Failure to do so correctly may prohibit the AP24 from functioning properly!

The Installation menu can only be accessed in STBY mode.

The Installation settings are grouped into the following functional categories:

• Commissioning: Dockside and Seatrial setup

• Automatic steering: Permits viewing and changing of basic steering parameters (See

also response control on page 21)

• Calibration:

• Boat type:

Calibration of sensors (also partly part of Commissioning)

Select boat type (also part of commissioning)

• Rudder drive: Rudder drive setup (also part of commissioning)

• SimNet config: SimNet group setup

Each group is designed to focus on specific functions and enable quick access when changes need to be made.

Some important points regarding the installation settings:

• When the AP24 is delivered from factory AND ANY

TIME AFTER AN AUTOPILOT RESET HAS BEEN

PERFORMED, the installation settings are all reset to factory preset (default) values. The automatic

interface prompt will appear (see page 65) and a

complete setup has to be made.

• The Seatrial settings are dependent on successful completion of the Dockside settings.

66 | Main menu

Commissioning

Dockside settings

If the autopilot has no rudder feedback unit installed refer

to Virtual Rudder Feedback on page 75-77.

The following menu items are accessible and can be set up in the Dockside menu:

Boat type

Rudder feedback

Virtual feedback

Drive voltage

Drive engage

Rudder test

Depth calibration

Steer to wind

Steer to navigator

Boat type

Type of boat selected will affect the steering parameters, and the functions available in the autopilot system.

The options are: Planing, Displacement, Sail and

Outboard.

Select appropriate Boat type by using the Up and Down keys.

Main menu | 67

Confirm by pressing the softkey.

Rudder feedback calibration

Make sure the unit is installed and aligned as per instruction in the AC12/42 Installation manual.

The rudder feedback calibration will set the correct relationship between the physical rudder movement and the rudder angle readout.

Manually turn the helm/wheel to starboard until the rudder stops at starboard lock (H.O.).

The Max starboard angle is the angle read by the rudder feedback unit before any adjustment is made.

If the actual rudder angle is different from that of the display, correct the reading with the Up/Down keys (see note).

68 | Main menu

MENU

Confirm Rudder feedback calibration to starboard by pressing the MENU key.

Manually turn the helm/wheel to port until the rudder stops at port lock (H.O.).

Adjust the displayed angle the same way as for starboard rudder.

MENU

Confirm Rudder feedback calibration to port by pressing the MENU key.

Many boats have ±45° (90° H.O. - H.O.) rudder angle as standard. So if you are not going to make any adjustment to the displayed angle you should still highlight the reading and confirm. This is necessary to prevent the rudder from hitting the end stops.

Rudder zero may still be inaccurate and should be adjusted under the next menu item.

Main menu | 69

Special test of LF3000/LFI3000 Mk2 feedback

Align engines to center position; “zero rudder”.

Rev engines to 3-4000 rev/min and observe the rudder angle indicator on the autopilot, a 2° change in the reading should be accepted.

If the rudder angle exceeds 2°, connect the screen on the TB1 cable (LFI3000) to the center block terminal and repeat item 2 (Refer to the

AC12/AC42 Installation manual). If this gives a better result keep the screen connected.

Set Rudder 0 (zero)

Bring the rudder to midship position and confirm. This will adjust an incorrect reading caused by misalignment of the rudder feedback unit.

Press the <1 key to return to the

Dockside menu

Drive voltage

Set the drive voltage to the correct level. The selections are 12V or 24V, and should be set to the voltage specified for your drive unit.

Refer to the drive unit table in the AC12/AC42

Installation manual for information.

70 | Main menu

The drive engage/bypass clutch output follows the same voltage as set for the drive unit. It is not possible to select a higher voltage than the supply voltage.

Selection of improper voltage level for your drive unit may damage both the drive unit and the autopilot computer even if the protection circuits in the autopilot computer are activated.

The drive unit voltage setting does not apply when operating solenoids on a continuous running pump.

Hence, the voltage to the solenoids will be the same as the supply voltage.

During the Rudder Test, the AP24 system will automatically detect whether the drive unit is a reversible motor or a solenoid is operated.

Drive engage

Drive engage has the following settings: Auto and

Clutch.

Clutch:

This is the default setting and it allows you to steer the boat with the helm or wheel when in STBY mode. The port will activate (go high) in all active steering modes,

Main menu | 71

and typically engage a bypass valve on a hydraulic linear drive or a clutch on a mechanical drive.

Auto:

This setting is implemented for future use. Always use the “Clutch” (default) setting.

Rudder Test

If the boat uses power assisted steering, it is important that the engine or electric motor used to enable the

power assist steering be turned on prior to this test.

Stand CLEAR of the wheel and do not attempt to take manual control of the wheel during this test!

Bring the rudder manually to midship position before starting the test.

The Autopilot Computer will after a few seconds issue a series of PORT and STBD rudder commands and automatically verify correct rudder direction. It detects minimum power to drive the rudder and reduces the rudder speed if it exceeds the maximum preferred speed

(8°/sec.) for autopilot operation.

The Rudder test is verified by the display showing

‘Motor OK’, or ‘Failed’. If ‘Failed’ is given, check for correct electrical connection.

Also refer to ”Alarms” beginning on page 105.

Depth calibration

This adjustment only applies to “smart” depth transducers

that outputs depth on NMEA2000 format.

72 | Main menu

The default value for the depth offset is 0.0, which indicates the displayed depth from the transducer to the seabed (b). Refer to the illustration on next page.

The value should be increased or decreased, depending on whether the depth reading should be from the water line or from the keel respectively:

A negative offset equal to the vertical distance from the transducer to the keel will display the depth as measured from the keel (a)

A positive offset equal to the vertical distance from the transducer to the water line will display the depth as measured from the water line (c)

Main menu | 73

The symbol in front of the depth reading will change to indicate that the depth is measured from: the keel or the water line

Range

-10 - +10

Step

0 – ±5: 0.1

5 – 10: 0.5

Default Units

Press the MENU key to confirm the offset setting.

Steer to wind

Wind steering is only available if ‘Boat type’ is set to ‘Sail’ in the Installation menu.

74 | Main menu

The ‘Minimum wind angle’ is the minimum apparent wind angle that will keep the sails well shaped and give an acceptable thrust. This parameter will vary from boat to boat.

The ‘Minimum wind angle’ applies for the tack-prevent function. It also applies when the autopilot is operating in

Wind

NAV

mode.

You can select different minimum wind angles for port and starboard. The difference between port and starboard will be taken into account when calculating the

Distance To Turn (DTT).

Range

15 - 90

Change per step

Default

Units

Steer to navigator

In NAV mode, when the required course change is more than the set limit, you are prompted to verify that the upcoming course change is acceptable. The limit is adjustable.

Range

10 - 30

Change per step

Default

Units

Dockside settings when using Virtual Rudder

Feedback

The Virtual Feedback algorithms in the autopilot software enable your autopilot to steer without a conventional rudder feedback unit. These algorithms are designed for vessels up to 40 ft. powered by outboard or stern drives only.

Installing a feedback unit, however, will enhance the performance of an autopilot and provide an accurate rudder angle indicator on the autopilot display. Unless impractical or impossible, a rudder feedback unit should be installed.

The autopilot is configured for Virtual Feedback when there is no feedback unit connected at first time turn on, and at turn on after an Autopilot reset has been performed (Page

104).

Main menu | 75

MENU

Select “Dockside” menu and press the softkey to confirm.

Boat type

When the autopilot is configured for Virtual Feedback the

Boat type is automatically set to Outboard.

Virtual Feedback calibration

The Virtual feedback calibration is entered as a numerical value equal to the physical rudder angle observed at the hard over position.

1 1

Use the Up/Down keys to set correct value and confirm with

MENU

Refer to pages 70-71 to set the Drive unit voltage and

the Drive Engage.

Rudder test

To perform the Virtual Feedback rudder test you must be able to view the movement of the engines/drives

(“rudder”).

76 | Main menu

Activate the automatic rudder test as shown, following the instructions on the display.

Confirm by pressing the softkey.

The next step is to enter the correct direction of the rudder movement.

>3 sec.

If the rudder is not moving so as to give a starboard turn, press the softkey, and repeat.

When the rudder starts to move to starboard, release and press the softkey to confirm.

Continue to follow the instructions on the display.

With the rudder hard over to starboard, turn the wheel carefully a little to port to release the hydraulic pressure.

Confirm by pressing the softkey.

Immediately release the softkey when the rudder reaches the hard over position. The rudder will now be automatically centered.

Main menu | 77

The Rudder test is verified by the display showing

‘Motor OK’ or ‘Failed’. If ‘Failed’ is given, check for correct electrical connection.

Also refer to Alarms beginning on page 105.

Seatrial settings

The Seatrial menu presents settings and automatic calibrations to be performed during seatrial.

The seatrial must always be performed in open waters at a safe distance from other traffic.

The Seatrial menu can only be accessed if the Dockside

Settings are completed and confirmed.

The seatrial settings are:

Set Rudder Zero (To verify the dockside alignment)

Compass calibration (To automatically compensate for on-board magnetic interference and to compensate for a fixed offset (A-error) in the final heading readout)

Wind calibration (To compensate for a fixed mechanical offset of the Wind vane)

Boat speed calibration

Transition speed (the speed at which you want to change the set of steering parameters)

Automatic tuning (A method of determining the steering parameters)

78 | Main menu

Set Rudder 0 (zero)

This adjustment is a final control of the dockside

adjustment (page 70) and should be made in calm sea.

Side forces from wind or current should be avoided.

Bring the boat up to cruising speed, and head directly into the wind

If the boat has twin engines, synchronize the engine RPMs

Set the trim tabs and stabilizers to have no effect on the boat’s heading

Steer the boat manually on a steady course

If required, confirm the rudder ZERO position by pressing the softkey

Compass calibration

Before the compass calibration is started, make sure that there is enough open water around the vessel to make a full turn.

The calibration should be done in calm sea conditions and with minimal wind to obtain good results. Use about 60-

90 seconds to make a full circle.

1. Highlight the Calibrate line in the dialog

2. Begin turning the boat to port or starboard

Main menu | 79

3. Press the MENU key to start the automatic compass calibration

a. An information window will be displayed when the calibration procedure is running.

b. The digits below the bargraph will read 0.0 when the turn rate is correct. Too high or too low turn rate is indicated as follows:

Turn rate too high, turning cw

Turn rate too low, turning cw

4. The automatic calibration is completed when the information window disappears from the display

The FC40 and RC42 compasses will store the calibration

and offset data in their own memory.

During the calibration, the compass will measure the magnitude and direction of the local magnetic field. If the local magnetic field is stronger than the earth’s magnetic field (the local field is reading more than 100%), the compass calibration will fail. If the local field is reading more than 30%, you should look for any interfering magnetic objects and remove them, or you should move the compass to a different location. The (local) field angle will guide you to the local interfering magnetic object.

See illustration on next page.

Calibration is made on the compass that is active for the autopilot.

If another model compass from Simrad or another manufacturer is installed, refer to the instruction for

that compass regarding calibration.

80 | Main menu

Lubber line Lubber line

Magnitude of local field in % of earth’s magnetic field.

Direction of local field with respect to lubber line. It can also be on the reciprocal.

In certain areas and at high latitudes the local magnetic interference becomes more significant and heading errors exceeding ±3° may have to be accepted.

Mounting Offset

After compass calibration, the difference between the compass lubber line and the boat’s center line should be compensated for.

Find the bearing from the boat position to a visible object. Use a chart or a chart plotter

Steer the boat so that the center line of the boat is aligned with the bearing line pointing towards the object

Change the offset parameter so that the bearing to the object and the compass readout becomes equal

Make sure that both the compass heading and the bearing to the object have the same unit (°M or °T).

Confirm the Offset by pressing the MENU key

Main menu | 81

Wind Calibration

This calibration only applies if you have a wind transducer directly connected to SimNet (IS12TW) or a wind transducer that outputs data on NMEA2000 format.

Any residual error in the apparent wind angle display can be corrected manually by entering the required offset.

82 | Main menu

A positive value indicates starboard offset angle,- a negative value indicates port offset angle.

Range

-180 - +180

Change per step Default

1 0

Units

Press the MENU key to confirm the offset setting.

Boat speed calibration

The hull shape or the location of the speed sensor may cause incorrect speed readings, and it may be required to calibrate the input to ensure that correct speed and log values are displayed.

Calibrate by Speed Over Ground

With a GPS connected to the system, the speed through water (SPD) can be calibrated equal to Speed Over

Ground. This adjustment should be made in calm sea with as little wind or tidal current as possible.

Bring the boat up to a constant cruising speed

(above 5 knots)

Select Calibrate w/SOG and press the MENU key

Press the MENU key again to confirm and execute the calibration

The SPD Correction factor will now be changed to equal the SOG and SPD values

Manually adjust the speed value

If you experience an incorrect speed reading, this can be manually re-adjusted by running the boat at constant speed over a known distance in both directions and average the speed reading. This reduces the effect of wind and tidal current.

Then adjust the SPD Correction factor to get the correct speed reading.

Range Change per step Default

0.50 – 1.50 0.01 1.00

Transition speed

The transition speed is the speed at which the AP24 will automatically change the steering parameter set from HI

to LO parameters, or vice versa (page 19).

The default setting of the transition speed is 6 knots.

On power boats it is recommended that you set the transition speed to a speed that represents the speed where the hull begins to plane or the speed where you change from slow to cruising speed.

On sailboats the transition speed should be set to 3-4 knots to give the best response in a tack.

The speed used for the automatic transition is obtained with the following priority:

Main menu | 83

Speed through water from the speed log source.

Speed Over Ground (SOG) from the GPS/chart plotter.

Automatic steering

The Automatic steering menu contains steering parameters for course steering, wind steering and nav steering.

Recall autotuned

To recall the parameter values that were achieved during the Autotune procedure, select Recall autotuned under

‘Automatic Steering’, and press the

key.

86 | Main menu

Confirm by pressing the softkey.

Steer to compass

The steering parameters can be looked at and changed if needed under this menu item. The parameters are

divided into two sets (page 22):

• HI value parameters for automatic steering at low speed and when running with a sailboat

• LO value parameters for automatic steering at high speed and when sailing into the wind or reaching with a sailboat

Confirm by pressing the softkey.

Boat type

Displayed parameter

Displacem.

& Sail

Planing &

Outboard

Own boat

Autotune Manual

Rudder HI 0.50 0.30

Cont.Rudder HI

Autotrim HI

Rate Lim HI

Rudder LO

Cont.Rudder LO

Autotrim LO

Rate Lim LO

Minimum rudder

1.40

40 sec.

6.0°

0.35

1.40

40 sec.

6.0°

0.20

1.00

40 sec.

6.0°

1.00

40 sec.

6.0°

Off Off

The values in the table are factory set (default) and listed for information only. After having performed the

Autotune, the values may differ from those listed in the table. See also “Autotune” previously in this chapter.

The two most important parameters that determine the performance of the automatic steering are Rudder and

Counter Rudder.

Main menu | 87

Rudder sets the rudder gain which is the ratio between the commanded angle and the heading error.

Course to steer

Too little Rudder

Course to steer

Too much rudder

• Too little Rudder and the autopilot fails to keep a steady course

• Too much Rudder gives unstable steering and reduces speed

• Low speed requires more rudder than high speed

See also “Minimum Rudder” on page 89.

Counter Rudder is the parameter that counteracts the effect of the boat’s turn rate and inertia. For a short time period it is superimposed on the proportional rudder response caused by the heading error. It may sometimes appear as if it tends to make the rudder move to the wrong side (counter rudder).

The best way of checking the value of the Counter

Rudder setting is when making turns. The figures illustrate the effects of various Counter Rudder settings.

New course

Counter rudder setting too low, overshoot response

88 | Main menu

New course

Counter rudder setting too high, sluggish and creeping response

New course

Correct setting of counter rudder, ideal response

Autotrim standard value is 40 seconds which should work well on most boats.

On boats operating on VRF it should be set to 20 seconds.

Rate Limit should be kept at 6.0°/second unless there is a need for more rapid response in turns.

Minimum rudder

Some boats may have a tendency of not responding to small rudder commands around the “course keeping” position because of a small rudder, a rudder deadband, whirls/disturbance of the water-stream passing the rudder or it is a single nozzle water jet boat.

Turning the Minimum Rudder function ‘On’, may improve the course keeping performance on some boats, but will increase the rudder activity.

During the seatrial, only set Minimum Rudder to ON if it proves to give a better course keeping performance in calm sea. It should be set after the Autotune has been performed and a possible fine tune of the Rudder

parameter (page 88).

Main menu | 89

90 | Main menu

Range

OFF - 5

Change per step

0.1

Default

OFF

Units

Final seatrial

After having completed all settings in the Installation

Menu, take the boat out and perform a final seatrial in open waters at a safe distance from other traffic.

• Steer the boat on all cardinal headings in AUTO mode

• Start with low and medium speeds to get familiar with the response from the AP24

• Verify the HI/LO transition and the effect of LO and HI

parameter settings (page 19)

• Try the effect of the Response adjust (page 21)

• Try the U-turn function

• If a Non-Follow Up lever (or handheld remote) is connected, test change of modes and verify port and starboard steering commands of the lever

• Set waypoints into each navigator connected to the system, and verify that the AP24 steers in NAV mode for each NAV source

• Try the NoDrift mode

• If the boat is a sailboat use the WIND mode and try the AP24 at different settings of the apparent wind angle. Also try the WINDN(av) mode, optimized VMG and WCV when sailing (tacking) to a waypoint

• If the rudder response feels aggressive during the seatrial, you may want to reduce the rudder speed to

get a smoother steering. Alternatively on a sailboat you may want to have a higher rudder speed when running

• The motor Drive out (page 92) can be set with the

above in mind. Never adjust in more than 10% steps with respect to the reading set during the automatic

rudder test (page 72). Always perform a new

Autotune after the adjustment

• Provide the owner with user training

Providing user training

The user should be instructed in the "basic" operational functions, such as:

• Turning the system on and off

• Changing modes. Explain briefly what takes place in the different modes

• Regaining manual control from any mode. Point out in what modes the helm is engaged by the autopilot

• Taking command at an "inactive" station, if applicable

• Using the lock mode, how to lock/unlock and how to shut the system down from a locked control unit, if applicable

• Use of the Power steering mode (NFU)

• Use of a Non-Follow-up controller, if connected

• Changing course by Left 1, Left 10, Right 1 and

Right 10 keys

• Stepping through the Main menu and sub menus learning how to (and why to) change the settings.

• How to select alternative sources for heading

(compass), navigation (GPS), chart plotter, speed, depth etc. if available

• Understand the difference between NAV mode and

NoDrift mode and their data sources (Nav, Pos)

• Locating compasses and knowing to keep magnetic items away

Main menu | 91

92 | Main menu

• Locating the Mains circuit breaker and the separate

SimNet circuit breaker if provided

Calibration

The Calibration is another entry to procedures for calibrating the compass, rudder feedback, depth, apparent wind angle and boat speed. These procedures are covered under ‘Commissioning’.

Rudder drive

The sub-menu items linked under ‘Rudder drive’ are part of the commissioning except for motor output and rudder deadband.

Motor output

The Motor output (displayed in percentage) is the amount of maximum available power needed to achieve correct rudder speed on automatic steering (Maximum speed is used in NFU mode). This setting will allow you to adjust the rudder speed to be different from the one automatically set in the rudder test.

Rudder deadband

The rudder deadband function is adaptive and is continuously operative. It prevents the rudder from hunting and the adaptive function optimizes the deadband to the speed of the boat and the pressure on the rudder.

If the auto-setting does not perform properly due to high inertia from the wheel or a loose steering gear, it can be adjusted manually.

Find the lowest possible value that will prevent the rudder from continuous hunting. A wide deadband will cause inaccurate steering. It is recommended to check rudder stability in AUTO mode when the boat is moving to get pressure on the rudder.

Range

AUTO, 0.1 – 4.0

Change per step Default

0.1 AUTO

Units

The rudder deadband setting is not available when the autopilot is configured for Virtual feedback.

SimNet configuration

SimNet units can be assigned in groups and given an instance number for identification.

SimNet Groups

The SimNet group function is used to globally control parameter settings in groups of units. The function is used on larger vessels where several units are connected via the SimNet network.

Main menu | 93

94 | Main menu

By assigning several units to the same group, a parameter update on one unit will have the same effect on the rest of the group members.

Setting

Display

Range

Simrad, None, 1-6

Default value

Simrad

Units

Language

Damping

Alarms

Simrad, None, 1-6

Simrad

Simrad: Default group for AP24

None: Not assigned to a group

1–6: Group

The figures on next page illustrates how the instruments on a flybridge and in a cockpit are assigned to separate language, damping and backlight groups, and how this affects the setup for the different instruments.

LANGUAGE =

NONE

DAMPING = 1

FLYBRIDGE

DISPLAY = 1

COCKPIT

DISPLAY = 2

Main menu | 95

Instance number

The instance number is used to identify multiple units of the same model when connected to a SimNet or

NMEA2000 network. The instance number is added to the product name e.g. AP24-1, AP24-2 for easy identification of the unit.

Range

0 - 20

Step

Default value

4.3 Service Information

Also see Trouble shooting page 103 about SimNet status,

System data and resets.

The Main menu includes a

Service item that access several options to display data used when testing or troubleshooting the system.

Demo

The autopilot includes a demo mode useful for demonstration and on show. All data displayed in the data pages can be simulated.

96 | Main menu

Confirm Demo mode by pressing the softkey. If the unit is turned off while in demo mode, the demo mode will still be active on next power on.

Demo mode is deactivated by using the menu as illustrated above.

The user will be notified with a

‘DEMO’ message every 10 seconds as long as the demo is running.

If several products are going to operate in Demo mode in a SimNet system, they should all be set to Demo mode initially. To have the full benefit of the autopilot in Demo mode, an Autopilot Computer must be part of the system.

About

By selecting the About menu item, an information window will display autopilot model, software version number (1.1.), software release (00) and date of release.

The shown readout is only an example!

Main menu | 97

98 | Main menu

Blank page

5 Alarm system

5.1 Alarm indication

The alarm system in the AP24 autopilot is activated if any

alarm settings are exceeded. Refer to Alarms, page 54.

When an alarm is notified, the alarm will be indicated with an alarm text and with an audible alarm.

The different alarm indications are shown in the table below.

Alarm type Sound Light

Reminder interval

Vital alarm

Important alarm

Alternating between 2 tones

Switching on/off

10s

20s

Standard alarm 40s

Warning Single 60s

Light warning Single beep

If AP24 is connected to other

SimNet units, any alarm in the system will be displayed on the control unit.

If no specific alarm text is displayed, an alarm code will

appear. Refer to Alarm codes, page 100.

Alarm system | 99

5.2 Acknowledging an alarm

An alarm is acknowledged by pressing any key. This will remove the alarm notification (text, light and sound) from all units that belongs to the same alarm group.

Refer to SimNet Groups, page 93.

A reminder will reappear at given intervals as long as the alarm situation exists.

An alarm received from other SimNet units must be rectified on the unit generating the alarm!

5.3 Viewing active alarms

A list of any existing alarm condition may be displayed at any time.

5.4 Alarm codes

If the text is received from other units connected to

SimNet, the alarm text may not be displayed. The alarm condition will then be indicated with a code.

A description for available codes are listed in the table on next page.

100 | IS20 Alarm system

Alarm ID Alarm

Wind shift alarm

True wind speed too high

True wind speed too low

Boat speed too low

Voltage too high

Voltage too low

Depth data missing

Navigation data missing

Rudder feedback data missing

Rudder feedback failure

Rudder response failure

Rudder drive overload

High drive supply

Low drive supply

Autopilot control communication failure

Autopilot function communication failure

Non volatile memory failure

IS20 Alarm system | 101

Blank page

102 | IS20 Alarm system

6 Troubleshooting

An autopilot is a complex system. Its performance depends on a proper installation and a successful seatrial.

The Main menu includes a

Service item that access several options to display data used when testing or troubleshooting the system.

6.1 SimNet status

The SimNet status screen provides you with status information about the different SimNet messages used by the system.

6.2 System data

The System data screen provides you with status information about the different messages used by the system.

Trouble shooting | 103

6.3 Resets

Autopilot reset

An Autopilot Reset is part of the final test at the factory, which will reset the memories to factory settings. Unless you need to clear all stored values during the installation setup, you should not perform an Autopilot reset.

To confirm the autopilot reset press the softkey.

The Installation and Setup procedures must be repeated after a reset has been performed!

In the event an Autopilot reset has been made, refer to

chapter 4.2.

Global reset

A Global reset resets the entire SimNet setup in the

Simrad Group and initiates a new automatic interface

setup. See chapter 4.1.

To confirm the Global reset press the softkey. The display will prompt you to repeat the interface setup.

104 | Trouble shooting

Autopilot failures

In the event of an autopilot failure, the AP24’s numerous test features will assist you in isolating a probable fault.

Audible and visual alarm are provided for every fault

being detected, see chapter 5.

Refer to the table below for hints and try to solve the problem yourself. You may also consult your nearest

Simrad dealer for assistance, if required.

Perform any repair action in the listed sequence.

The ‘Off course’ warning is automatically reset when the error is rectified.

– – – in a display indicates that data is missing.

Nav data missing

6.4 Alarms

Display readout

Probable fault

System failure Alarms:

Off course Boat’s heading is outside the fixed off course limit of

20 deg. (Automatic reset when inside limit). Extreme weather conditions, too slow speed.

Recommended action

Check steering parameters

(Rudder, Autotrim, Seastatefilter)

Increase Rudder value

Increase boat speed, if possible, or steer by hand.

Missing or invalid NAV data Check the Nav. Receiver/GPS setup

See Service menu Chapter 4.3

Trouble shooting | 105

Display readout

Probable fault

Shallow water The depth is inside the set limit or outside the range

Depth data is missing

Compass data missing

Rudder data missing (not applicable for

Virtual feedback installations)

Rudder response failure

No data from selected compass

Rudder feedback signal missing or erratic

No response to rudder command

Recommended action

Carefully observe the actual depth

Adjust the alarm limit if not hazardous

Steer to safe depth, the alarm will reset automatically

Turn off the shallow alarm if data is missing

If more that one compass is connected to the system, refer to the Setup/Sources menu to select a different compass

Make a source update if no compass is available

Check connections

Replace the compass (Note:

Do not cut cables. There are

screw terminals inside)

Check all connections

Check the alignment as per the installation instructions

Replace the rudder feedback unit

Check all connections

Check Rudder FB transmission link (not applicable for Virtual feedback installations)

Check drive unit motor/brushes

Replace the autopilot computer

106 | Trouble shooting

Display readout

Rudder test failed

No active control unit

Rudder Drive overload

Probable fault

Following conditions may exist:

Rudder feedback failure

Autopilot computer current overload

Bypass/clutch overload

Rudder moves in only one direction

Poor connection to one of the solenoids (continuously running pump)

Faulty PCB in autopilot computer

Rudder test not completed within 2 min.

Poor connections to the drive unit

Faulty PCB in the autopilot computer

Rudder moves at full speed to one side.

Faulty PCB in autopilot computer

Active control unit goes silent.

Recommended action

Refer to recommended actions for the specific probable faults

Check the connections

Replace the autopilot computer

Check connections

Check the PCB for traces of burned transistors. – Replace the autopilot computer

Replace autopilot computer

The drive unit shut down due to an excessive load or a short circuit.

Press the STBY key on an

"Inactive" unit to reset

Check/repair SimNet cable.

Replace the control unit

Check the drive unit and drive unit installation. Look for mechanical obstructions. Check the manual steering

Disconnect the drive unit. If the fault is still present, replace the autopilot computer

Trouble shooting | 107

Display readout

Bypass/clutch overload

Bypass/clutch disengaged

ACXX High temperature

ACXX Memory failure

No autopilot computer

Low drive supply

High drive supply

Depth data missing

Wind data missing

Wind shift

Probable fault Recommended action

Clutch/bypass current exceeds 3.3 Amps (overload or short circuit).

Poor connection or open circuit in bypass/clutch coil

Check actual current

Check voltage marking on coil

Check coil resistance (through connecting wires)

Check connections

Replace bypass/clutch if open

Perform new "Rudder test"

Excessive temperature in autopilot computer

(>80°C), possible long term overload.

Wrong checksum on memory parameters or variables. Autopilot computer will use default values.

Faulty Autopilot computer or poor cable connections from the same.

Supply voltage less than 9

Volts

Switch off autopilot

Check for backload in drive unit/steering system

Check that the autopilot computer specifications matches drive unit

Perform a "Master reset" and make a new "Dockside set-up".

Switch off and on again. If the alarm is repeated, replace autopilot computer

Check connectors and cable

Replace autopilot computer

AC12/AC42 Supply exceeds

35 Volts

Switch autopilot off, charge batteries.

Check/repair battery charger

Switch the autopilot off

Check/repair battery charger

Missing or invalid depth data

Check depth sensor/cables

Missing or invalid wind data Check wind sensor/cables

Wind shift exceeds ‘Wind shift limit’

Re-enter Wind mode to reset the Wind shift reading

Expand limit

Set wind shift limit to Off

108 | Trouble shooting

7 Maintenance

7.1 General

The AP24 units are “repair by replacement” units, and the operator is therefore required to perform only a very limited amount of preventive maintenance.

7.2 Control unit

The AP24 Control Unit will under normal use require little maintenance.

If the unit requires any form of cleaning, use fresh water and a mild soap solution (not a detergent). It is important to avoid using chemical cleaners and hydrocarbons such as diesel, petrol etc.

Make sure that all open SimNet connectors are fitted with a blocking plug (part no 24006355).

It is advisable at the start of each season to check all connections to the control unit head and cover with

Vaseline or WD40.

Always put on the weather cover when the unit is not in use.

7.3 Autopilot computer

No special maintenance is required. It is advisable, however, at the start of each season to make a visual inspection of the internal and check all connections.

7.4 Rudder feedback

Make a visual inspection at 2-3 month intervals and at the start of each season. Apply some grease at the ball joints when required (RF300, RF25)

Maintenance | 109

7.5 Compass

If the compass is exposed to the weather, make a visual inspection at 2-3 months intervals, and at the start of each season.

7.6 Drive unit

Refer to the drive unit manual for maintenance instructions.

7.7 Exchange of software program

Contact Simrad Customer Support about software updates.

110 | Maintenance

8 Optional equipment

8.1 R3000X Remote Control (NFU)

R3000X is a small handheld remote control with two keys for power steering or course selection (port and starboard), and one key with a LED indicator for (limited) mode change.

SIMRAD

STBY-AUTO

Operation

Push key for

Port and Stbd commands

STBY/ automatic.

Automatic modes are active when the lamp is lit.

Simrad R3000X

1) NAV and WIND

NAV

modes can only be entered from the Control unit because you have to accept their prompt

displays.

In STANDBY mode, the rudder will move for as long as the Port or

Stbd key is pressed.

In AUTO mode and Wind modes the set course or set wind angle will change 1° each time the key is pressed.

If you keep the key pressed, it will automatically change the setting in increments of 3° per second.

Mode changes are as per table below.

Initial mode

STBY

1 st

press 2 nd

press

AUTO

NODRIFT

NAV

WIND

NAV

AUTO

STBY

AUTO

NODRIFT

AUTO

WIND

Optional equipment | 111

8.2 S35 Steering Lever (NFU)

S35 has spring-loaded return to mid-position. A push key with light indicator is used for mode selection similar to the R3000X Remote Control.

Alternatively S35 can be used as a conventional NFU lever without mode selection.

Operation

Refer to the operation of the R3000X in the previous chapter. On S35 you move the lever to right or left instead of using keys.

8.3 JS10 Joystick (NFU)

The JS10 Joystick is a Non-Follow-Up steering lever designed for indoor and outdoor console mount. It has a spring-loaded return-to-mid-position and is equipped with 10 m (33’) of cable and installation hardware.

Operation

JS10 has no mode change feature. The rudder will move for as long as the lever is held in left (Port) or right

(Starboard) position.

8.4 AP24 with MSD50 Stern Drive unit

The information in this chapter only applies if your autopilot is driving a Simrad MSD50 Stern Drive.

The MSD50 Stern drive needs a zero point setting after the autopilot has been turned on. Refer to the MSD50 manual for further information.

112 | Optional equipment

Zero point setting

AUTO

STBY

Unless you need a rudder angle display when leaving the dock, just steer the boat manually on a straight course and press the AUTO key. The zero point is then set automatically.

If you prefer to use the rudder angle display when leaving the dock, proceed as follows:

After turn-on the rudder angle display will alternate between 10 degrees port and starboard to indicate that the (rudder) zero point need be set.

Turn the wheel from lock to lock (H.O. to H.O.) and count the exact number of turns. Then start from one lock position and turn the half number of turns.

Press AUTO and then STBY. The zero point is now set and the display will show:

Return to the operation section.

There is no further need for zero point settings until next time you turn the autopilot on.

Optional equipment | 113

Blank page

114 | Optional equipment

9 Glossary

Apparent wind – The speed and direction from which the wind appears to blow with reference to the bow when the boat is moving (also called relative wind).

Arrival alarm – An alarm signal issued by a GPS/chart plotter that indicates arrival at or at a predetermined distance from a waypoint (see arrival circle).

Arrival circle – An artificial boundary placed around the destination waypoint of the present navigation leg, the entering of which will signal an arrival alarm.

Bearing – The horizontal direction of one terrestrial point from another, expressed as the angular distance from a reference direction, usually measured from 000° at the reference direction clockwise through 359°.

BTW – Bearing to a specified waypoint from present position. The correct acronym for the more commonly used BPW (Bearing Position Waypoint).

BWW – Bearing waypoint to waypoint - Bearing angle of the line between the “TO” and the “FROM” waypoint, calculated at the “FROM” waypoint for any two arbitrary waypoints.

COG - Course Over Ground - The actual direction of progress of a vessel, between two points, with respect to the surface of the earth. The vessel’s heading may differ from the course over ground due to the effects of wind, tide and currents.

GPS - Global Positioning System - This system is based on satellites in fixed orbits, circling the earth at an altitude of approximately 20,200 km. The system will provide the user with 24 hour a day all weather position coverage, with an accuracy of 5 to 30 meters.

Magnetic bearing – Bearing relative to magnetic north; compass bearing corrected for deviation.

Magnetic deviation – A local magnetic field on board a vessel. Can interfere with the earth’s magnetic field and create compass readings that may deviate from the actual magnetic heading. The deviation will vary with the actual heading.

Glossary | 115

116 | Glossary

Magnetic heading – heading relative to magnetic north.

Magnetic variation - A magnetic compass points to the magnetic north pole. The difference between this direction and true north is the magnetic variation. The amount and direction of this variation is dependent upon where on the earth you are located.

NMEA0183 - A format (language) designed to permit communication between various types of marine electronic equipment. In essence this is a two-wire shielded, serial data link, permitting one device to talk while other devices listen. Numerous different sentences are available, permitting communication between various different devices.

NMEA2000 – A modern serial-data communication network to interconnect marine electronic equipment on board vessels. Equipment designed to this standard will have the ability to share data, including commands and status, with other compatible equipment over a single signaling channel.

PGN – An acronym for Parameter Group Number. PGNs are used in NMEA2000 analogues with the three capital letters used in NMEA0183 sentences, e.g. XTE.

Product ID – A number, suffix, acronym or term that can identify a product.

Product name – The name of a Simrad product known from sales and other literature.

Route - A stored sequence of waypoints. These waypoints will be listed in the order in which you desire to follow them.

SimNet – An acronym for Simrad Intelligent Marine

Network based on the NMEA2000 communication protocols.

SimNet Class 1 products – Simrad products that are

SimNet controllers, i.e. they have an appropriate display and routines that can set up and control the SimNet.

SimNet Class 2 products – Simrad products that do not contain a SimNet controller. When connected to SimNet they will automatically pick the first available source on

SimNet and lock onto that. When a Class 1 product is

added to the Simrad Group, Class 2 products will automatically subordinate themselves to the Class 1 source selection.

SimNet Group – A number of Simrad products that are selecting and sharing the same data sources via the

SimNet network.

SimNet Source – Any product or device directly connected to SimNet or NMEA2000, or interfaced to

SimNet via NMEA0183 or Robnet2.

SOG - Speed over ground is the actual speed of the vessel relative to the ocean floor.

True bearing – Bearing relative to true north; compass bearing corrected for compass error.

True heading – Heading relative to true north (the meridian).

VMG – Velocity Made Good. A vessel’s true progress towards a waypoint taken into consideration all factors like leeway and current.

Waypoint - A discrete point, stored in a navigator, located on the surface of the earth. Normally this point will be identified by Lat/Lon coordinates although in some systems it may be shown by T.D.'s.

XTE - Cross Track Error - Used to identify a vessel’s position relative to a straight line drawn between two waypoints. The amount the vessel is off to the left or to the right of this line is known as the Cross Track Error. It is normally displayed in thousands of a nautical mile, equal to 6 ft or 1.85 m.

Glossary | 117

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Glossary | 118

10 Index

A about, 97 alarm codes, 101 indication, 99 listing, 105 shallow water, 54 wind shift, 54 apparent wind, 62, 115 apparent wind angle, 82 arrival circle, 39 automatic tuning, 84 autopilot computer maintenance, 109 autotrim, 89

B backlighting, 15, 57 boat type, 67

C calibration apparent wind angle, 82 boat speed, 82 compass, 79 depth, 72 commissioning, 67 commissioning status, 85 compass calibration, 79 maintenance, 110 contour cross angle, 34 contrast, 58 control unit maintenance, 109 counter rudder, 21, 84 setting, 88 cross track error, 36, 117

C-turn, 24

D damping, 53 data pages, 46 data pages setup, 51 day profile, 58 demo mode, 96 depth calibration, 72 depth contour tracking, 32 depth gain, 33 dockside settings, 67 dodging, 19 drive engage, 71 drive unit maintenance, 110 voltage, 70 failure, 105

G gybing, 42

H heading capture, 18 heading offset, 81

L language, 59 layline steering, 63 lazy S-turn, 30 lock function, 63

M master reset, 66 minimum rudder, 89 minimum windangle, 74 modes of operation auto, 17 navigating, 37

NoDrift, 35 standby, 16 wind, 40 motor output, 92 multiple station, 47

N nav change limit, 38, 75 navigating, 37

Index | 119

120 | Index

NFU Steering lever, 112 night profile, 58

NoDrift, 35

P parameter selection automatic, 19 pattern steering, 23 power steering, 16

R rate limit, 89 reference depth, 34 remote lock, 63 reset global, 104 local, 104 response, 21, 23 route navigation, 39 rudder, 21, 84 setting, 88 rudder deadband, 92 rudder feedback maintenance, 109 rudder test, 72 rudder zero adjust, 70, 79

S sea state filter, 61 seatrial, 78 final, 90 setup, 65 shallow water alarm, 54

SimNet groups, 93 instance number, 96 status, 103 software program, 110 version, 10 speed over ground, 83 spiral-turn, 25 square-turn, 28 symbols, 13 system data, 103

T tack angle, 62 tack time, 41, 61 tacking in auto mode, 35 in wind mode, 41 transition speed, 19, 83 true bearing, 117 true heading, 117

U units, 60 user training, 91

U-turn, 23

V virtual rudder feedback, 75

VMG optimizing, 63

W wind function, 62 wind response, 22 wind shift, 41, 54, 108 wind vane steering, 40

Z zigzag-turn, 27

Key features

Automatic steering
NoDrift mode
Wind vane steering
WindNAV mode
Multistation system
Depth Contour Tracking (DCTTM)
Sailboat tacking
Sailboat gybing
Turn pattern steering
Course adjustments with keys

Frequently asked questions

Press the PWR key once to turn the system on. The autopilot will display the start-up pages, then show the Standby mode display after 5 seconds.

Use the 1, 10, Left 1, and Right 1 keys to adjust the commanded course by 1 or 10 degrees.

NoDrift mode allows you to steer the boat unaffected by wind and current. It's beneficial for situations where you want to maintain a specific course without being influenced by external factors.

When in WIND mode, the autopilot will adjust the course to maintain the set wind angle. You can use the 1, 10, Left 1, and Right 1 keys to adjust the set wind angle.

WINDNAV mode combines wind steering and navigation. It allows you to sail towards a waypoint while considering wind direction and efficiency. The autopilot will prompt you to confirm course changes needed to navigate towards the waypoint.