Onwa KAP-833 User Manual

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KAP833 KAP833

OPERATOR'S MANUAL

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KAP-833 KAP-833

Autopilot

Warning!

Automatic pilots are designed to be a navigational aid. As an automatic steering aid, an autopilot can alleviate the boredom of hand steering.

This allows the operator of the vessel time to attend to other duties, keep a more accurate check of navigation duties or just relax and enjoy the trip.

HOWEVER, THE AUTOPILOT SHOULD NOT BE LEFT SOLELY IN CHARGE OF THE VESSEL AND AN ADEQUATE WATCH SHOULD BE MAINTAINED AT ALL TIMES.

IT IS NOT RECOMMENDED THAT THE AUTOPILOT BE USED WHILE NAVIGATING IN RESTRICTED WATERWAYS AS WATER CURRENTS, WIND CHANGES OR RADIO TRANSMITTER INTERFERENCE MAY AFFCT VESSEL COURSE SUFFICIENTLY TO ENDANGER YOUR OWN OR OTHER VESSELS.

Introduction

The KAP-833 autopilot is a hybrid of digital and analogue technology to give the best of both worlds - excellent steering characteristics with digital compass display, keypad course input, GPS and gyro interfaces, and much more, in solid metal case.

The KAP-833 Autopilot controls the vessel steering through mechanical drive, reversing pump set ,solenoid valves or relays.

The compass must be installed in a place free of magnetic interference, and connected to the autopilot via the cable supplied.

The rudder feedback must be attached to the rudder in such a way that it can accurately measure the position of the ships rudder. This must also be connected to the autopilot via the cable supplied.

Provision has been made for two hand remote, panel remote, steering lever or steering wheel stations. These are very robust units, which will not be adversely affected by water. The abilities they provide are somewhat different

from the main control panel. See the Operation section of this manual for details.

For more in formation on installation of your KAP-833 autopilot, see the Autopilot Installation section of this manual.

For more information on using your KAP-833 autopilot, see the Autopilot Operation section of this manual.

1 1

Autopilot Operation

Overview of Operation

1-1

Standby Mode

1-2

Auto Mode

1-3

Power Steering Mode

1-4

GPS Mode

1-5

2 2

3 3

4 4

5 5

6 6

Alarms

Stopwatch Timer Alarm

2-1

Angle Off Course Alarm

2-2

No GPS Data Alarm

2-3

Remote Unit Operation

Control function setting

Weather

4-1

Counter-Rudder

4-2

Rudder (Rudder Ratio) Control

4-3

Compass Calibration

Autopilotlot Installation

Installation of Main Unit

6-1

Installation of Compass

6-2

Installation of Rudder Feedback

6-3

Installation of solenoid

6-4

Installation of Motor

6-5

Installation of Remote Units

6-6

NMEA Connection

6-7

External Alarm Installation

6-8

PORT Wiring Diagram

6-9

System Configuration with optional items

6-10

Installation Dimension

6-11

11 11 12 13

7 7

Commissioning Checks

7-1

Connection Tests

7-2

Adjustments

7-3

Fuse Protection

1 1

Autopilot Operation Autopilot Operation

Overview of Operation

The following is a brief list of the capabilities of the KAP-833 autopilot. Each described in more detail in a separate chapter.

Note: Power to the KAP-833 is supplied via Weather control. Turn the knob control in a clockwise direction to apply power to the KAP-833; this will initially put the KAP-833 into Standby mode.

Standby Mode

The digital display shows the current magnetic heading. The autopilot will not apply any steering control.

Auto Mode

The autopilot will maintain your vessel on any desired magnetic course. This course can be set from the control panel by dialling up a course change with the course knob, entering a course from the keypad, or recalling a stored course with the PRESET button.

Power Steer

The rudder angle may be controlled by the course knob on the main panel or from one of the remote steering stations.

GPS Mode

When receiving information from a GPS unit, the autopilot can steer a vessel to a precise latitude and longitude.

Stopwatch Timer Mode

A timer can be set for 1 to 60 minutes. When the time expires, an alarm will sound. Uses include timing of trawling runs, or a reminder to check for anchor drag at set periods during a storm.

Remote steering stations

Two of these may normally be fitted (eg on each side of the bridge), allowing adjustment of the autopilot course, or direct control of the rudder (power steering). An optional third steering lever may be connected to the control unit, subject to a special order at time of delivery.

Rudder Ratio, Weather and Counter Rudder

These controls customise the KAP-833 for your vessel. They may also be used to adjust steering for varying sea conditions.

Standby Mode

Turn Weather control knob clockwise to switch KAP-833 on to Standby mode.

In this mode

The Main and Standby lights are on The motor clutch is disengaged No steering control output is generated The commercial watch alarm is turned off (if enabled) The digital display shows the vessels current magnetic course

Possible alarms

Stopwatch timer alarm

If the option of Electric steering is enabled, this mode may not be available and the unit will go direct to power steer on turn on.

Auto Mode

Engaging Auto steering mode

When in Standby Mode and the AUTO key is pressed, a beep will sound and the adjacent yellow light will be turned on.

The autopilot will lock on to the heading indicated.

Disengaging the Autopilot

Press the Standby button. A beep will sound and the vessel will return to manual steering (Standby Mode). The AUTO light will be turned off and STANDBY light turned on.

Course Adjustment

Pressing the port (red) or stbd (green) arrow keys will cause a one degree course change in that direction. The display will change to indicate the new course-to-steer.

Rotating the course-change knob will change the course-to-steer by one degree for each click .

Entering a course from the keypad, and pressing GOTO will change the course-to-steer to the bearing entered.

Power Steering Mode

Engaging Power Steering Mode

Press the Power button. A beep will sound and the adjacent light will come on. The rudder will move to the centre position.

Setting the rudder angle

Rotating the course control knob clockwise will move the rudder to starboard. Rotating the course control knob anticlockwise will move the rudder to port.

The angle of rudder applied depends on the amount of rotation of the course knob.

The maximum angle of rudder is controlled by the internal and external rudder limit settings.

For information on power-steering with a remote unit (eg: Electric Wheel or Steering Levers), see the section on remote units.

If your vessel requires counter-rudder while steering in auto mode, you may wish to set the counter rudder control 1 (ie: disabled) while using power-steer.

GPS Mode

For use when interfaced to a GPS generating NMEA 0183 data output. While in auto mode this allows the autopilot to be directed by the GPS, enabling automatic heading changes and eliminating the effects of wind and tide.

The digital display indicates the course-to-steer, which will be the bearing between the origin and destination waypoints, plus a factor to correct for the current cross-track-error (XTE).

Engaging GPS Mode

When in any mode, press the GPS key. A beep will sound and the adjacent yellow light will be turned on.

The vessel will begin turning from its current course to the course requested by the GPS unit, at a maximum rate of 10 degrees per second.

If no GPS data is being received by the KAP-833, the autopilot will lock onto the course of the vessel at the time that GPS Mode was engaged, and the No GPS Data alarm shall sound.

Disengaging GPS Mode

Pressing the Auto key will set the KAP-833 to Auto Mode. Pressing the Standby key will return the pilot to Standby.

Setting up your GPS unit

Because there are a great variety of GPS units that will work with this autopilot, the following is a guide only. For more information, consult your GPS manual.

The GPS unit must be set up to output NMEA0183 data on a pair of wires which are connected to the GPS In terminal connections inside the KAP-833. The data generated must include at least on of the following.

The APA sentence. The APB sentence. The BOD and XTE sentences.

If only the XTE data sentence available, the pilot can steer in a restricted manner. See later in this section.

The GPS unit must then be commanded to go to a waypoint, or to follow a line joining two or more waypoints (called a route). This unit will then send information to the autopilot from which can be calculated the course-to-steer. If several waypoints are linked together into a single route, and the GPS unit is set to auto-sequence between them, and an arrival zone of more than 0.1 NM (Nautical Miles) is set so that the GPS can detect when the vessel has reached a waypoint, then the KAP-833 will be able to steer from each waypoint to the next without intervention.

If only the XTE information is available from your GPS unit then your vessel must be on track, and heading in the correct direction before engaging the GPS mode, and the auto-sequencing feature is not available.

Remember:

Prior to engaging GPS mode, a route must be programmed into the GPS for the Autopilot to follow.

No GPS Data Alarm

If the autopilot is not receiving valid information while in GPS Mode, the No GPS Data alarm will sound, and the GPS light will blink. This could be caused by:

Incorrect wiring of the GPS to the KAP-833. Incorrect data output from the GPS unit. No route set up or selected in the GPS unit. No location fix at the GPS unit.

See also Alarms in the Operation section of this manual.

The bearings generated by the GPS unit must correspond to the bearings the KAP-833 is receiving from its magnetic compass. The greater the difference between these bearings, the less accurate will the be GPS Mode steering.

Ensure that the GPS unit has the correct magnetic correction factor.

Ensure that the KAP-833 compass is correctly aligned and installed.

2 2

Alarms Alarms

A number of conditions will cause alarms to sound. In some cases, lights on the control panel will also blink. Each alarm has a different beep pattern (except stopwatch and commercial watch alarm). The external alarm output may also be turned on by some of these alarms; this does not have a beep pattern .

Stopwatch Timer Alarm

This alarm indicates that the time set by the user has expired. Alarm pattern is 0.2 second on, 0.2 second off until reset. The external alarm output is turned on 1 minute after the internal alarm commences. Note that a suitable piezo buzzer must be attached to this output. This is not supplied with the KAP-833 but is available as an option.

Angle Off Course Alarm

The alarm pattern is 0.2 seconds on, 0.2 seconds off when vessel is more than the set number of degrees from course-to-steer. The off-course light blinks on and off at the same rate as the audible alarm. The angle at which this alarm sounds can be set to any desired limit (including completely disabled).

Angle Off Course

An alarm will sound if the vessel has deviated from its desired course by more than a set number of degrees. This can be caused by a number of steering faults, any of which require attention by the crew.

The angle at which this alarm sounds may be set to any value between 1 and 180 degrees.

To set the off-course alarm angle

Enter the desired angle in degrees from the keypad, and then press the off-course button.

To examine the current off-course alarm angle

When no digits entered from the keypad, press the off-course button. The currently set alarm angle (in degrees) will be displayed for two seconds.

When the allowable angle is exceeded, the off-course alarm will sound and the off-course light will flash. When the vessel is brought on to its correct course again, the alarm will cease.

Changing to power-steer or standby modes will cancel the alarm.

ËµÃ÷Êé

The default value for the off-course angle (ie the one set when the KAP-833 is turned on) is 30 degrees.

Note that the alarm will sound if a large course change is entered (eg from keypad, preset course or course change knob). This alarm will cease as soon as the vessel completes its course change. The alarm may also sound when changing from one section of a GPS route to another, and will cancel itself when the course change is completed.

No GPS Data Alarm

323

The alarm sounds 0.2 seconds on, 0.2 seconds off if the autopilot is not receiving valid information from the GPS. The GPS light blinks on and off at the same rate as the audible alarm.

3 3

Remote Unit Operation Remote Unit Operation

The Panel and Hand Remotes come with a 3-way switch for selecting POWER, Off or AUTO features.

The Steering Lever can be supplied with or without a 3 way switch. When the switch is fitted, the Steering Lever is used in the same way as a Panel or Hand Remote. When supplied without a switch, the Lever is used as an Electric Wheel.

The Electric Helm or Steering Lever (without switch) are dash mounted units and control rudder angle by manually turning the wheel or moving the lever.

To engage AUTO Mode - Panel or Hand Remote and Steering Lever.

Ensure the Remote Switch is Off and knob (or lever) is set to centre. Move the remote switch from Off to AUTO.

Course Adjustment

When AUTO mode is engaged, turning the Remote knob (or lever) will alter the course to steer. This change will be reflected on the digital heading

display. If the remote AUTO mode was engaged with remote knob at centre, the course can be changed to port or stbd by 90 degrees.

To disengage AUTO Mode

Either move the remote switch to Off (which also disengages the autopilot) or press the desired mode key on the KAP-833 main panel (Auto, GPS, Power or Standby).

To engage Power Steer Mode

Ensure the remote unit switch is set to Off, and the remote dial (or steering lever) is set to centre. Change the remote switch to the Power position.

The remote dial (or steering lever) now acts as the helm, giving control over the movement of the rudder. The maximum rudder angle is controlled by the rudder limit adjustment on the KAP-833 main panel.

To disengage Power Steer Mode

Return The rudder to centre before switching to Off.

Electric Helm or Steering Lever

The KAP-833 can be customised to accept input from an electric helm (steering wheel) or Steering Lever to provide electric steering in place of, or in addition to, manual steering. The KAP-833 is programmed to suit a customer's needs. For full electric steering, Power Steer mode will automatically be selected at turn-on. For manual steering plus electric steering, Power Steering must be selected manually on the KAP-833 unit. In both of these options, the course-change knob on the KAP-833 has no effect in Power mode.

The Remote Operation can be modified by the Installing Technician as listed in special modes section of this manual.

4 4

Control function setting Control function setting

Weather

The main power switch is incorporated in this variable control. When in the OFF position no power is applied to KAP-833. By turning this in a clockwise direction from the OFF position, the switch applies to the KAP-833.

This setting is used for adjusting the autopilot response to varying sea conditions and varying vessel capabilities. The weather value sets the desired accuracy of the vessel steering. A high weather setting will cause the vessel to steer very accurately but may cause excessive use of the steering.

In good weather, set this control to a high value, but ensure that the drive lights do not flicker continuously. This will give the straightest possible course.

In poor weather, reduce this setting to prevent over-working the steering.

Rotating this control fully anti-clockwise will turn off power to the KAP-833 autopilot.

Counter-Rudder

In some vessels, changing course requires a large amount of rudder to be applied initially, and then a smaller amount of rudder in the REVERSE direction to stop the vessel from swinging beyond its desired course. This is called counter-rudder.

The KAP-833 autopilot has this feature built-in. A counter-rudder setting of 1 gives no counter-rudder steering, suitable for light and manouverable vessels. If you find your ship over-steering when under autopilot control, increase the counter-rudder setting by a couple of steps, and see if the next course change behaves better.

Once the correct setting is found for your vessel, it should not need to be changed.

Note that when in POWER STEER mode, you may prefer to set the counter-

rudder control to 1 .

Rudder(Rudder Ratio)Control

This setting is used to determine the amount of rudder the vessel requires for steering (actually, the amount of rudder angle applied for a given angle off course).

The centre position is usually suitable for most vessels, but should the vessel's steering be sensitive or slow, adjustment maybe required.

In general, an agile vessel with a relatively large rudder or very small keel will require a small rudder setting. A large, slow vessel may require a high value for the rudder ratio.

This may also be adjusted according to speed - low speeds may require more rudder angle for steering than high speeds.

A value of 1 signifies the minimum amount of applied rudder (for sensitive steering, large rudders or low gearing ratio.)

A value of 10 signifies the maximum amount of applied rudder (for vessels with slow steering, small rudders or high gear ratio.)

When the rudder setting is too low, turns will take an excessive amount of time and the vessel may wander .

When the rudder setting is too high, turn will be rapid and the vessel will oversteer.

5 5

Compass Calibration Compass Calibration

The compass supplied with your KAP-833 autopilot has been calibrated during manufacture. This calibration will be satisfactory for almost all installations. If you have a steel vessel, or some other factor which causes the compass to perform poorly, the calibration procedure will adjust compass characteristics to compensate. The calibration should only be done if the compass is known to be inaccurate.

If the KAP-833 compass display as constant offset (eg the autopilot compass reads 3 degrees high on all bearings), simply rotate the KAP-833 compass case to align bearings with the ships compass.. it is not necessary to re-calibrate the compass as described below.

If the KAP-833 compass has inconsistent variation on different headings, the following calibration procedure can be carried out. This procedure should only be done in calm waters with adequate sea room.

1. Enter 901 by using keypad, then hold down GOTO, Press AUTO, then release both buttons together.

2. Turn vessel slowly through two complete circles in same direction. Each complete turn should take at least 60 seconds.

3. When the circles are complete, enter 902 by using the keypad, then hold down GOTO, press AUTO then release both buttons together.

This completes the compass calibration. Check alignment of the KAP-833 compass by steering vessel due North (000 on ships compass) and, if necessary, rotate outer case of the KAP-833 compass in its bracket until the heading display reads 000.

Note: The effectiveness of the calibration is dependent upon all 3 steps being completed. Should you wish to abort the calibration procedure at any time during the circle turning, do not carry out step 3.

It is important to realise that on any vessel the ships compass can have heading errors as a result of the vessels magnetic signature. These errors can be minimised by having the ships compass swung and compensated by a licensed compass adjuster. In any case it is highly unlikely that the ships compass and autopilot compass will be congruent for every heading.

If you are unsure of the success of the calibration, you may return to the factory calibration setting by entering 903 , hold down GOTO, press AUTO, then release both buttons together.

6 6

Position

Autopilot Installation Autopilot Installation

Installation of Main Unit

The KAP-833 main panel should be mounted in an accessible position, protected from rain or salt water.

Wiring

Access for wiring must be provided. Cabling will have to be run to the rudder feed back Unit, compass unit and steering drive system. Wiring should be kept

as far away as possible from radio aerials and aerial cables to prevent interference to the radio, and to prevent transmitted signals from the radio influencing the pilot.

The power source for the autopilot should be fused separately from other equipment. Maintain conventional colour coding and, if necessary, mark the cables for ease of identification.

Connection - As per diagram labelled Connection Diagram for KAP-833.

Magnetic Effect

As a minimum amount of steel is used in the control unit. there is negligible effect on a steering compass. Some radio interference may be caused and the routing of cables should be considered when wiring the vessel.

Installation of Compass

There are two types of compass suitable for this autopilot - a magnetic sensor unit (fluxgate), which is a complete compass, and the compass-top sensor (CTS),

which is used together with a standard magnetic ships compass.

Installing a Compass-Top Sensor

The sensor unit placed on the glass plate of the ships compass, in the exact centre of the compass card and secured with an adhesive such as double-sided tape or silicon sealant. Before fixing the sensor in place, align it carefully so that the KAP-833 compass displays the same bearing as the ships compass. The compass top sensor is preferred for steel hull vessels provided a suitably compensated compass is fitted to the vessel.

Bow

Compass sensor

Keel line

Compass

Bow

Compass sensor

Parallel travel

Installing a Magnetic Sensor Unit (Fluxgate)

The compass unit should be treated carefully as the internal gimbals can be broken if dropped. Remove any internal packing before use.

The position of this compass is the most important item in the installation of the autopilot. Good course holding depends on the compass being free from magnetic interference.

As this compass has no moving card, it is not necessary for the compass to be mounted low in the vessel. This is usually a place of high magnetic interference and should be avoided. However, a position of severe roll such as the top of a mast should also be avoided.

The compass need not be mounted in a weatherproof position. The compass can be mounted on top of a flat surface, on a bulkhead or from the deck head. Check other side of bulkhead for materials, which may cause magnetic interference.

Interference from any iron or steel can cause malfunction of the compass unit. To prevent this occurring a minimum distance of 1 meter (3 feet) should be kept from any steel or other ferromagnetic materials. This includes speakers and radios with internal speakers.

Fasten the compass bracket with non-magnetic screws. The compass must be mounted in a near vertical position. See also the diagram labelled compass installation .

Calibration

The compass unit will need to be rotated in its bracket for the correct heading to be displayed. The compass is calibrated before leaving the factory and will be accurate enough for sea trials. After initial sea trials, you may wish to recalibrate the KAP-833 compass, although in most cases the factory calibration will be as good as or better than calibration achieved on the vessel. See the Compass Calibration section in autopilot operation.

Interchanging Magnetic Sensor Unit & Compass Top Sensor

The magnetic sensor unit (fluxgate) and compass top sensor can be interchanged. However, the compass detector switches identified as component SW 1 on the PCB must be switched to correct position. (Note: Rear cover must be removed).

For magnetic sensor unit (compass): switch 1 and 2 to OFF

For compass top sensor: switch 1 and 2 to ON

OFF ON

1 COMPASS CTS

2 COMPASS CTS

3 3 Not used

4 RFUS RFUH

Terminal Strip Side of PCB

For Magnetic Sensor (COMMAG - Autopilot Compass) switches 1 and 2 must be OFF. For Compass Top Sensor (CTS)switches 1 and 2 must be ON.

Installation of Rudder Feedback (RFUH standard supplied)

Position

Install rudder feedback as shown in the diagram labelled Rudder Feedback Unit Installation The unit should be adjacent to the tiller and must copy the angular movement of the tiller. The markings on the rudder feedback unit indicates the required movement of the tiller for course correction. It should be installed with the shaft uppermost, mounted and linked in such a way that the four pivot points (tiller post, feedback shaft and the adjustable linkage points) form the four corners of a parallelogram.

The rudder feedback unit is water resistant. However, if it is to be mounted in a wet position, some effort is necessary to ensure the unit does not become immersed in water. If necessary the rudder feedback unit may be mounted upside down, in which case the blue and red (or brown) connections to the KAP-833 terminal strip should be reversed.

Optional

Connection Arm

Rudder feedback unit

Rudder

X=X Y=Y

Electrical connection

Terminal RUDDER is marked 5V, RUD, Neg and shield, if shielded cable is used. The connections are as below.

Terminal 5V : + 5 volts Red

Terminal Rud : Signal Yellow

Terminal GND : GND Black

If a small RFUS is used Sw1 (Dip switch) section 4 should be set to OFF.

FOR RFUH, IF INTERNAL RESISTORS ARE

IN CIRCUIT, IT FUNCTIONS AS RFUS.

After installation of the feedback unit is complete and the linkage is fitted, have the steering of the vessel turned lock to lock and ensure:

a)The direction (port or starboard) indicated on the top of the RFU is correct. b)No undue mechanical strain is placed on the rudder feedback or linkage.

NOTE: THE AUTOPILOT WILL NOT FUNCTION CORRECTLY IF A RUDDER FEEDBACK IS NOT FITTED, OR IF THE FEEDBACK IS FAULTY OR INCORRECTLY ADJUSTED.

NOTE: THE RUDDER FEEDBACK UNIT IS FACTORY ALIGNED. THE ARM SHOULD NOT BE REMOVED OR LOOSENED UNNECESSARILY. IF ARM IS LOOSENED OR REMOVED, VOLTAGE ALIGNMENT SHOULD BE CHECKED BEFORE USING THE AUTOPILOT. THIS MUST BE DONE BY A COMPETENT TECHNICIAN.

Hand lever (option)

Port solenoid

St ' b solenoid

Negative lead of

power supply

Motor Drive

Rudder

Installation of solenoid

Please connect the solenoids as follow:

Motor 1

Motor Connector

Motor 2

Clutch+3

Installation of Motor

Before connect KAP-833 to Motor drive rudder you have to open the upper cover of KAP-833 and short circuit D68, D69. Then connect the motor as follows :

Motor Connector

Motor 1

Motor 2

Installation of Remote Units

Hand Remote, Panel Remote and Steering Lever (with switch).

These units are very robust and may be mounted where subject to occasional splashes of water. If mounted in direct sunlight, the Panel Remote decal may fade.

The cable leading from the unit should be connected to the Remote connector on the rear panel of your KAP-833.

NMEA Connection

Data In

For GPS navigation, connect the GPS unit data output and data return wires to terminals marked IN- and IN+ of the NMEA Data terminal GPS IN1+ and In1-. The connections to be used are marked IN- (Negative), IN+ (Signal).

Data In Connection - NOTE: Examples only

For any GPS unit which has a BNC type output plug (a bayonet plug, taking a coaxial cable with core and shield), connect the core to IN1+ and the shield to In1-.

For a GPS unit with loose wires connect the positive to the IN + and negative to IN-.

Refer to diagram for terminal location.

External Alarm Installation

An external buzzer may be connected to the port ALARM, terminals ALA+ and ALA-.

The ALA- output will be 10 volts when the alarm is not sounding (with alarm connected), and approximately 0 volts when active. We recommends a 12-volt piezo buzzer with maximum current draw not exceeding 250 milliamps be connected to this output.

If a larger type siren or alarm unit, which draws in excess of 250 milliamps is used, this must be connected via a relay. The KAP-833 external alarm circuit is used to energise the relay coil and power to the siren or alarm unit is connected via the relay contacts.

The external alarm output is activated if the stopwatch timer or commercial alarm has been sounding for longer than one minute.

PORT Wiring Diagram

7.Out 2

5.In 2+

6.In 2-

8.Gnd

7. +10V

4.Gnd

5. +5V

6. Gnd

4. Contro 2

5. Blue

6. Shield

4. White

5. MATT

4. 2.5V

1.In 1+

3.Out 1

2.In 1-

G P S

1. Adjust

3. Adjust

2. Contro l

REMOTE

COMPASS

1. Green

3. Yellow

2. Red

2. ALA+

1. ALA-

ALARM

GPS REMOTE COMPASS ALARM

RUDDER

1. +5V(red)

3. Gnd(black)

2. Sig(yellow)

3. Clutch +

4. Clutch -

MOTOR

2. MOT-

1. MOT-

POWER

2. Power +

1. Power -

RUDDER

MOTOR POWER

System Configuration with optional items

Main

GPS Unit

Electromotion redirector

Compass sersor

Remote portable controller

AUTOPILOT

MODEL KAP833

SERIAL NO.

8330201

FUSE 15A

POWERMOTORRUDDERALARMCOMPASSREMOTEGPS

Power

Motor

Rudder

Alarm

Rudder angle indicator

Installation Dimension Diagram

250

120

140

171

69 67

170

133

220

23.5

240

6.5

7 7

Commissioning Checks Commissioning Checks

Connection Tests

171

1.Voltage to be connected is the required DC voltage (12 or 24V).

2.ENSURE POLARITY OF THE VOLTAGE SUPPLY IS CORRECT.

3.All electrical connections are correct.

4.Loose cables are correct.

5.Turn steering wheel fully clockwise and visually check that moving and mechanical parts do not foul; visually check that RFU has moved in the correct direction as indicated on the RFU label.

6.Repeat step 5 for anti-clockwise.

7.Turn on power and adjust the rudder limits if necessary. See Adjustments section of this manual.

Dockside Tests

1.Turn steering (by hand) to centre (midships) position.

2.Determine vessel heading by a sighting on known heading or compass.

3.Turn on power supply

4.Align Autopilot magnetic sensor until display reads correct heading.

5.Select AUTO mode on control unit.

6.AUTO light will come on.

CAUTION: IF AUTOPILOT DRIVES HARD OVER, IMMEDIATELY TURN CONTROL UNIT OFF, REVERSE MOTOR WIRES MARKED MOT AND MOT AT THE SCREW TERMINALS ON THE KAP-833 AUTOPILOT. REPEAT FROM STEP 1.

7.Turn course knob 10 degrees to starboard.

8.Green steering light should come on.

9.Confirm that rudder moves to starboard.

10.Turn course knob back to centre, then 10 degrees to port.

11.Red steering light should come on.

12.Confirm that rudder moves to port.

NOTE: AT NO TIME SHOULD THE AUTOPILOT DRIVE THE RUDDER INTO THE MECHANICAL STOPS.

13.Press STANDBY key to leave auto mode.

The autopilot is now ready for full operational testing (sea trials). Testing should Only be carried out in clear waterways until you are familiar with the operation.

Adjustments

Rudder Limit

The Rudder limit control is hardware preset.

There are physical limitations to the angle that the rudder can move through. If the autopilot attempts to drive the rudder past these limits, damage to the steering gear may occur.

An internal potentiometer is set to ensure that the KAP-833 will not drive the rudder past the set limits.

An internal control of the KAP-833 can then be used to limit the amount of rudder travel to an even narrower range. This can be used to limit the rate of turn of the vessel. Under normal operation the internal rudder limit control is set at maximum.

Rudder Limit (Software Preset)

If the autopilot attempts to drive the rudder beyond its physical limits, the steering gear may be damaged. An internal rudder limit adjustment has been set to prevent this occurring. The internal rudder limit control can then be used to restrict the rudder angle range even further, and is intended to be used to prevent sharp turns, rather than protect the autopilot system.

NOTE: If the rudder feedback unit has been installed correctly, it should not be necessary to adjust the Rudder Limits Switch Setting.

The rudder limits prevent the steering motor driving the rudder beyond its physical (mechanical) stops. The limit switch is set so that the limit display comes on before the rudder reaches the stops.

VR101(RUDLIM)

These are two display symbols P_L (port limit), S_L (starboard limit) indicating the state of the rudder limit circuits...

The port limit P_L display will come on when the rudder position is further to port than the limit set by the rudder limit port setting. This will cause any port drive command to be ignored and turn off the port

drive light on the front panel.

The starboard limit S_L functions in same way rudder angles to starboard.

NOTE: THE RUDDER LIMITS ARE FACTORY SET TO APPROXIMATELY 25 DEGREES. IF THE RUDDER FEEDBACK HAS BEEN INSTALLED CORRECTLY, THE P_L AND S_L SYMBOLS SHOULD DISPLAY WHEN THE RUDDER IS MOVED PORT PORT OR STARBOARD BY 25 DEGREES.

Setting Rudder Limit

- Select Standby mode

- Enter 905 and press and hold GOTO the Auto, Standby or Power, only the standby light will be on The display will indicate between 0 and 256 this is representative of rudder position where 128 is centre, 256 is fully port and 0 is fully starboard.

- Set the rudder to the required port position and press Port Arrow Button

- Set the rudder to the required Starboard position and press Stbd Arrow Button

- To store the Data press GOTO

Rate-of-Turn Control

The rate-of-turn control on the internal preset.

A Potentiometer VR102(TURN)

prevent very sharp when changing course.

Fully anticlockwise will turn 1 degree/sec (ie 180 degrees in 3 minutes). Fully clockwise will turn 40 degrees per second (ie as fast as possible for most vessels).

The slower settings may be used for turns while trawling, trolling, etc., and the faster settings used to prevent dangerous or uncomfortably sharp turns.

Note that the turn rate of a vessel will also depend upon the rudder ratio setting, and perhaps the rudder limits.

If a course change is entered, and then it is realised that the rate-of-turn control is set too low (ie the turn is too slow) just alter the rate-of-turn control clockwise until the correct speed is found.

Once a turn is begun, adjusting the rate-of-turn control downward (anti-clockwise) will have no effect. ie., the turn rate can be INCREASED during a turn, but not DECREASED.

The rate-of-turn control applies only in AUTO and GPS modes.

sets the maximum rate-of-turn for the vessel, to

Rate of turn is also controlled by the rudder limit and rudder ration controls.

A course-change entered from one of the remote steering stations is not controlled by the rate-of-turn knob.

Trim

The Trim control on the internal preset VR31 (TRIM).

When the KAP-833 first is switched on and in Standby mode, the Trim knob should initially be set in mid position which corresponds to setting of 5.

There are circumstances in which the autopilot may set the rudder in the centre (according to its feedback unit), but the vessel does not steer straight ahead. Reasons for this are:

1. The rudder feedback unit may not be perfectly aligned.

2. There may be a side-wind, current, net drag, etc., which causes the vessel to steer to one side.

The KAP-833 computer program can compensate for these errors, but may take a few minutes to correct completely. Adjusting the trim control can eliminate these errors immediately.

To find the correct trim setting: With the vessel travelling ahead, switch autopilot the to power steer mode. Adjust the trim control until the ship steers straight.

The trim control is not intended to be used for adjusting the vessel course in auto or power steer mode.

Fuse Protection

The KAP-833 has a 10 Amp fuse mounted internally. This device wil1 shut off power to the KAP-833 autopilot if a short-ciruit occurs inside the autopilot, or between a power output and ground.

If this fuse blows repeatedly, recheck all your installation and wiring carefully. If no error is found, consult your dealer or Technician.

KAP 833 Special Modes

To enter special modes enter number on keypad, press and hold GOTO then press STANDBY. To store the data press GOTO. To exit special modes press MAIN To use preset value press PRESET

Selection

901 Start compass calibration (CAL displayed) 902 Store compass calibration 903 Return to default compass calibration. (RES displayed) 904 Factory test for calibration. 905 Set limit switches(Analogue Volt Dis) PORT ARROW (for port)/STBD ARROW (for Stbd)

908 Option remote: r-1 Hand remote provision for 2 r-2 Active remote r-3 Hand remote plus power steer on pin 3 r-4 Basic remote plus power steer on pin 3 in standby mode.(Electric steering vessel) r-5 When in power steer mode accept input from 3, Power steer mode from other inputs pin 1 and 2 selected by 4 being pulled high for 1 and low for 2 to be active. Input 4 can be pulsed with a momentary push button to select the mode. r-6 When in standby the system goes to power steer mode accepting input from 3, Power steer mode from other inputs pin 1 and 2 selected by 4 being pulled high for 1 and low for 2 tp be active. Input 4 can pulsed with a momentary push button to select the mode.

When setting limit switches in vessel with only power steer, Mode 908 allows movement of the rudder using the encoder or port and starboard buttons .If remote system is r-5 or r-6 select 908 mode prior to selecting 905 limit switch mode. Use encoder to move rudder to desired position. Limits do not operate in this mode.

Onwa KAP-833 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual