M A N U A L Simrad AP20 Autopilot A L W A Y S A T T H E F O R E F R O N T O F T E C H N O L O G Y
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Instruction manual Instruction Manual This manual is intended as a reference guide for operating and correctly installing the AP20 autopilot. Great care has been paid to simplify operation and set-up of the Simrad AP20, however, an autopilot is a complex electronic system. It is affected by sea conditions, speed of the vessel, hull shape and size.
Simrad AP20 Autopilot Document revisions Rev – A B C D E Written by Date Sign N.G. 22.03.97 N.G. 07.10.97 N.G. 22.06.98 N.G. 20.12.99 N.G. 27.03.00 N.G. 20.06.00 F 28.08.01 N.G. G 15.05.02 N.G. H 12.02.04 Checked by Date Sign G.K. 22.03.97 Approved by Date Sign Th.H. 22.03.97 Th.H. 07.10.97 Th.H. 22.06.98 Th.H. 20.12.99 Th.H. 27.03.00 Th.H. 20.06.00 28.08.01 15.05.02 I.K. 15.05.02 I.K. Th.H. 12.02.04 Document history Rev. – First edition Rev.
Instruction manual Contents 1 INTRODUCTION ....................................................................................... 8 1.1 General .................................................................................................. 8 1.2 How to use this manual......................................................................... 8 1.3 System components............................................................................... 9 1.4 AP20 Control Unit .....................................
Simrad AP20 Autopilot 2.5 Non-Follow-Up steering (NFU) ......................................................... 17 2.6 R3000X Remote Control .................................................................... 18 2.7 S35 Steering lever ............................................................................... 18 2.8 Automatic Steering ............................................................................. 18 2.9 Automatic Speed selection...........................................................
Instruction manual 3.11 S35 NFU Steering Lever..................................................................... 47 3.12 NMEA messages................................................................................. 48 3.13 IP protection........................................................................................ 50 4 Installation.................................................................................................. 51 4.1 General ...................................................
Simrad AP20 Autopilot 4.21 NMEA Compass in ............................................................................. 71 4.22 Radar Clock/Data................................................................................ 72 4.23 IS15 Instrument installation ................................................................ 72 4.24 External Alarm.................................................................................... 74 4.25 NI300X NMEA Interface Unit ..........................................
Instruction manual 5 Maintenance ............................................................................................. 106 5.1 Control unit ....................................................................................... 106 5.2 Junction Unit ..................................................................................... 106 5.3 Rudder Feedback............................................................................... 106 5.4 Compass ................................................
Simrad AP20 Autopilot 1 1.1 INTRODUCTION General Congratulations on the purchase of your new Simrad AP20 autopilot system and thank you for selecting what we feel is the most advanced autopilot system available on the market today. Today, Simrad manufactures a complete range of autopilots for all types of vessels, from leisure boats to advanced steering systems for merchant marine vessels. Our factory for these products Simrad Egersund AS, is located in Egersund on the southwest coast of Norway.
Introduction Please take time to read this manual to get a thorough understanding of the operation and system components and their relationship to a complete AP20 autopilot system. Other documentation material that is provided with your system includes a warranty card. This must be filled out by the authorized dealer that performed the installation and mailed in to activate the warranty. 1.
Simrad AP20 Autopilot 1.4 AP20 Control Unit A compact autopilot control for panel, bulkhead or bracket mounting. Large LCD display for readout of autopilot data and rotary course knob. It has two Robnet connectors for system interconnection and expansion. 1.5 Junction units The junction unit is the heart in the AP20 autopilot system. It contains the steering computer, interface circuits to all system components and drive circuits for the drive unit motor and clutch.
Introduction RFC35 Electronic Fluxgate Compass A compact heading sensor from Simrad with 15 m (45 feet) of cable. The direction of the earth's magnetic field is sensed by a floating ring core in a fluxgate coil and transformed to a digital signal read by the autopilot steering computer. RFC35R Rate compass Fluxgate compass with integrated rate sensor. Provides a dramatic improvement to the dynamic performance of both the autopilot and a stabilized radar display. Same dimensions as RFC35.
Simrad AP20 Autopilot 1.8 Optional equipment A series of options are available for the basic AP20 system. R3000X Remote Control A small handheld remote control with two push buttons for power steering or course selection (port and starboard), and one push button with built-in lighted indicator for limited mode change. S35 NFU Lever S35 is designed for indoor and outdoor bulkhead mount. The lever has spring loaded return to mid-position. A push button with light indicator is used for limited mode change.
Operation 2 OPERATION OF THE AUTOPILOT WARNING ! An autopilot is a very useful navigational aid, but DOES NOT under any circumstance replace a human navigator.
Simrad AP20 Autopilot The control unit shown above can operate as a stand alone unit in an autopilot system or combined in a multistation system. In a multistation system the command can easily be transferred from one unit to another. Units not in control will display "Inactive". The AP20 system is capable of the following primary steering modes: STBY (manual steering), AUTO, NAV and WIND, each mode having a dedicated push button.
Operation After approx. 5 seconds the system is operative and the unit that was turned on will show the STBY mode display. Other units in a multistation system will display "Inactive". Control can be available at any unit by pressing the STBY button. A long press (2-3 sec.) on the STBY button switches the system OFF. Note ! In an emergency it is possible on a multistation system to turn OFF the system at any control unit by pressing down the STBY button for 2-3 seconds.
Simrad AP20 Autopilot 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. P RUDDER 10 S Use the wheel to bring the "rudder" to midship position. 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.
Operation angle is shown on the display and the rudder will move to the commanded angle and stop. HEADING P Press both buttons simultaneously to activate Follow-Up S P Use course knob to command rudder angle WARNING: While in Follow-Up mode, you cannot take manual control of the wheel. Return to manual control in STBY by pressing: P o S 02 RFC RUDDER S STBY PWR Actual rudder angle 2.
Simrad AP20 Autopilot 2.6 R3000X Remote Control REMOTE Push buttons for Port and Stbd NFU commands STBY-AUTO STBY/AUTO mode button. AUTO mode is when lamp is lit In STBY mode the rudder will move as long as the Port or Stbd button is pressed. In AUTO mode, the set course will change 1° each press. Note! If you keep the button pressed, it will automatically change the course at a rate of 3°/second.
Operation The AP20 will keep the boat on the set course until a new mode is selected or a new course is set with either the course knob or the PORT or STBD buttons. One revolution of the course knob equals 44° course change. Once the course is changed to a new set course, the boat will automatically turn to the new heading and continue to steer the new set course.
Simrad AP20 Autopilot 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Example of Transition speeds with AUTOMATIC Speed parameter selection HI ed spe LO e spe ters me ara p d Transition to HI parameters with increasing speed: 10 Knots rs ete am par Transition Speed set to 9 Knots Transition to LO parameters with decreasing speed: 8 Knots 2.10 Manual speed selection Select AUTO mode. To toggle between HI and LO speed parameters, press the "AUTO" button two times quickly.
Operation 2.11 Navigating with the AP20 The AP20 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. In the NAV mode, the AP20 uses the heading sensor as it's reference for course keeping. The steering information received from the external navigator alters the set course to direct the AP20 to the destination waypoint.
Simrad AP20 Autopilot Press again to activate NAV mode CTS NAV SET UP o 348 Display readout: Course to steer: 348 Cross track error: .02 nm to stbd. Compass heading: 347 M or T Next waypoint: Egersund Bearing to waypoint: 350 Distance to waypoint: 7.2 nm HEADING 347 o RFC nm NEXT WP EGERSUND o BRG 350 DST M nm * Course to steer is the course set internally in the autopilot to steer the boat on to the track.
Operation 2.12 Selecting a different Navigator If you have more than one navigation source connected to the AP20, you will be able to choose any for navigation. Refer to the User Set-up menu for details on selecting a different navigator. Note ! 20220505H If the AP20 is connected to a navigation receiver that does not transmit a message with bearing to next waypoint, it will pick a XTE message and steer on Cross Track Error only.
Simrad AP20 Autopilot 2.13 Dodging Dodging is useful in situations where you need to quickly take control of the helm to steer around an obstruction, and then wish to return to the previous set heading after performing the evasive manoeuvre. Dodging is activated by a quick press on the DODGE button. When in DODGE mode the displayed set course is the last one set prior to activating the dodge function.
Operation 2.14 Dodge in NAV Press to activate Dodge mode: Perform dodge using: DOD GE DODGE N 0.1nm TURN Wheel HEADING or Non Follow Up Follow Up both 347 RFC NEXT WP Fishing 350 o DST 7.2 nm BRG To return from Dodge mode press one of the following buttons: ANUAV TO SP EE TE UD P AUTO SPEED D OD GE TURN 2.
Simrad AP20 Autopilot 2.16 Tacking in Auto mode When the AP20 is installed on a sailboat, a fixed tack of 100 degrees can be made in AUTO mode. The use of this function should be carefully considered based on the boat's characteristics and the weather conditions. The tack function should only be used into the wind and must be tried out in good weather conditions with light wind to find out how it works on your boat.
Operation 2.17 Wind vane steering Prior to entering WIND mode the AP20 system should be operating in AUTO, with valid input from the selected wind transducer. The WIND mode is an alternative function to the NAV mode and it is only available if the system has been set up for SAIL-boat in the Installation Menu, and NAV/WIND source is set to WIND under the USER SETUP menu. (Refer to page 31). WIND function can only operate when reaching as it is necessary to have a stable apparent wind.
Simrad AP20 Autopilot 2.18 Tacking in Wind mode In WIND mode on sailboats there is also a tacking aid function. This function may only be used when the boat is reaching and will when activated take the boat from the course you are steering to the computed course that gives you the same apparent wind on the other side.
Operation 2.20 Lock function The "LOCK" function is a safety feature included in the AP20 system when you have more than one control unit installed. It will disable all control units except for a single, user selected control unit location. When the "lock" function is in use, no transfer of command may take place; only the "active" control unit stays in command. To enable the "lock" function, make a quick double press on the STBY button.
Simrad AP20 Autopilot After having "unlocked" the other control stations, the "active" control unit will show the above symbol before the display returns to normal. All other control units will return to the "inactive" state.
Operation 2.21 User Set-up Menu Sequences FWD in MENU NAV BACK SETUP Quick double press to enter User Setup Menu NAV SETUP FWD Sequences BACK in MENU Scrolls through menu selections or sets value on menu items SETUP Nav/Wind Backlight Contrast Nav Source Seastate Filter Nav ------MAN 1 The Nav/Wind selection only appears if the autopilot is configured for sailboat. (See Dockside settings, page 85). Selects whether NAV mode button will activate NAVigation mode or WIND mode steering.
Simrad AP20 Autopilot Adjustment is local. All steps are not available at high temperatures due to automatic temperature compensation. SETUP Nav/Wind Backlight Contrast Nav Source Seastate Filter Nav GPS1 MAN 1 Select the source for NAV mode steering. Refer to interface setup table on page 94. SETUP Nav/Wind Backlight Contrast Nav Source Seastate Filter Nav GPS1 MAN 1 Select value for Sea State Filter. OFF: Provides precise steering but increases rudder activity.
Operation SETUP Pos Source Select Compass Course adjust System data NMEA data GPS1 RFC 1° Select the compass to be used for AUTO steering, if more than one compass is connected. Refer to the interface setup table on page 93. RFC = Simrad RFC35 Fluxgate compass or Simrad RFC35R Rate compass (See Note) MAGN = Magnetic compass (or Simrad RFC35 Fluxgate Compass.
Simrad AP20 Autopilot System data and NMEA data are test functions to analyse data processed by the AP20. (See Trouble shooting page 109). Except when NMEA data or System data is displayed, the menu will disappear after 30 seconds if no key is pressed. It will disappear immediately if any mode key (STBY, AUTO or NAV/WIND) is pressed. 2.22 Instrument screens and menu A number of instrument screens are available under each mode screen if the required NMEA 0183 sentences are provided (see paragraph 3.1).
Operation TRUE WIND COG 274 M SOG 2.4 kt BRG 272 M WP Egersund D 32.2nm X 0.02nm 000 046 o 8 270 090 DGPS1 POSITION o N 58 27.11' E 005 o kt 180 DGPS1 POSITION N 58 E 005 27.20' 58.32' COG 125 M SOG 5.00kt GPS1 NAV DATA WP Egersund BRG 034 M DST 0.82nm XTE 0.12nm LOG TOTAL DISTANCE 3456 TRIP DISTANCE 12.0 1.
Simrad AP20 Autopilot Instrument set-up This screen gives access to the set-up of the Shallow Water Alarm and the Trip reset. Press and hold the INSTRUMENT button to activate the screen as shown. INSTRUMENT SETUP SET SHALLOW --.--ft RESET TRIP --.--nm --:--hr Select item using the STBD [>] button and the course knob to set the shallow water alarm limit. Also use the course knob to reset the trip counter. Note ! The shallow water alarm is activated only when digits are dialled in.
Technical Specifications 3 TECHNICAL SPECIFICATIONS 3.1 AP20 Autopilot System Boat size and type:..................... Up to 80 feet, Power, Displacement, Sail Steering system types: ............... Hydraulic, Mechanical Inter-unit connection: ................ ROBNET network or two-wire supply/data System ON/OFF: ....................... From control units Supply voltage:.......................... See junction units Power consumption: ..................
Simrad AP20 Autopilot Heading sensors: Standard: ........................... RFC35 Electronic Fluxgate compass Options:............................. Magnetic compass RFC35R Rate compass NMEA Compass (Not J3000X) Simrad RGC50/RGC10 gyrocompasses * Analogue fluxgate compass (sin/cos)* Analogue wind vane (sin/cos)* * By CI300X Course Selection:....................... Rotary course dial and push button Alarms: ...................................... Audible and visual, optional external Alarm modes: ............
Technical Specifications Display: Type: ................................. Backlit LCD matrix display Resolution: ........................ 160 x 128 pixels Colour: ....................................... Black Illumination: .............................. Adjustable in 10 steps Environmental Protection:......... IP56 from front, IP43 from back. Safe distance to compass: .......... 0.5 m (1.6 ft.) Temperature: Operating: ......................... 0 to +55 °C (+32 to +130 °F) Storage: ..........................
Simrad AP20 Autopilot 3.3 Junction units Dimensions: ............................... See Figure 3-2 and Figure 3-3 Weight: J300X/J3000X .................. 1,3 kg (2,9 lbs.) J300X-40........................... 2,8 kg (6,2 lbs) Supply voltage: J3000X .............................. 10-28V DC J300X/J300X-40 ............... 10-40V DC Reverse voltage protection ........ Yes (not J300X-40) Power consumption: .................. 5 Watt (electronics) Motor / solenoid drive: J3000X ..............................
Technical Specifications Figure 3-2 J300X/J3000X Junction Unit - Dimensions Figure 3-3 J300X-40 Junction Unit - Dimensions 20220505H 41
Simrad AP20 Autopilot 3.4 RFC35 Fluxgate compass Dimensions: ............................... See Figure 3-4 Weight: ...................................... 0,9 kg (2,0 lbs) Supply and output:..................... Polarity independent 2-wire supply with superimposed pulse width modulation Automatic Performance: Calibration: ....................... Automatically activated by control head Gain compensation: .......... Automatically adjusted continuously Repeatability:............................. ± 0.
Technical Specifications 3.5 RFC35R Rate compass Dimensions: ............................... See Figure 3-4 Weight: ...................................... 0,9 kg (2,0 lbs) Supply and interface:................. Robnet Power consumption: .................. 0,9 watts Automatic Performance: Calibration: ....................... Automatically activated by control head .... Gain compensation: .......... Automatically adjusted continuously Rate sensor stabilized heading output Accuracy:.........................
Simrad AP20 Autopilot Dimensions: ............................... 160 mm x 126 mm (6.3 in x 5 in.) Weight: ...................................... 0,9 kg including cable (2,0 lbs.) Power consumption: .................. 0,9 watts Temperature range: Operation: ......................... 0 to +55 °C (+32 to + 130 °F) Storage: ............................. –30 to +80 °C (–22 to +176 °F) Environmental Protection:......... IP56 Mounting: .................................. Deck or bulkhead Material:.................
Technical Specifications Temperature range: Operation: ......................... –10 to +55 °C (+14 to +130 °F) Storage: ............................. –30 to +80 °C (–22 to + 176 °F) Transmission link: ..................... Stainless 350mm (13.8") with 2 ball joints. Ball joint stud for rudder arm requires 4.2mm dia hole and 5mm tap. Figure 3-6 RF300 Rudder Feedback - Dimensions Figure 3-7 Transmission link - Dimensions 3.8 CI300X Compass Interface Dimensions: ...............................
Simrad AP20 Autopilot Gyro compass input:.................. Synchro 1:1 (RGC10/RGC50 gyrocompasses) Heading or windvane input: ...... Sin/cos max 12V DC NFU steering lever input: .......... Port/stbd potential free contact Robnet network interface: ......... 2 network connectors Cable inlets: ............................... Rubber glands for cable diam. 10-14 mm Mounting: .................................. Bulkhead mount Material:.....................................
Technical Specifications Material:..................................... Epoxy coated aluminium Environmental Protection:......... IP44 Temperature range: Operation: ......................... 0 to +55 °C (+32 to +130 °F) Storage: ............................. –30 to +80 °C (–22 to +176 °F) 3.10 R3000X Remote Control Dimensions: ............. See Figure 3-9 Weight:..................... 0,4 kg (0,9 lbs) Protection ................. IP56 Cable length: ............ 7 m, shielded Material:..........
Simrad AP20 Autopilot 3.
Technical Specifications Remarks: Indata use n n n n n N N N P P P P n Bold red = {IS15, J3xx and IS11Multi} M=Multi only, black = {J3xx and IS15}. Blue 'X' IS15 only.
Simrad AP20 Autopilot 3.13 IP protection Each part of a Simrad autopilot system has a two digits IP protection code. The IP rating is a method to classify the degree of protection against solid objects, water ingress and impact afforded by electrical equipment and enclosures. The system is recognised in most European countries and is set out in a number of British and European standards.
Installation 4 INSTALLATION 4.1 General This section provides detailed information successfully installing AP20 Autopilot system.
Simrad AP20 Autopilot e) Test NAV mode and input interfaces (if connected) including optional heading sensors f) Test interface outputs to external equipment (if connected) 9. Seatrial settings (Page 96) a) Set rudder zero b) Compass calibration c) Compass Offset adjustment d) Automatic tuning (Optional: does not need to be done) e) Viewing parameters 10. Testing Autopilot Operation at Sea (refer to Sea Trial instructions, pages 96, 104) 11. Provide the user with training (Page 105) 4.
Installation Pay particular attention to the junction unit/drive unit combinations on page 58 and the chart on page 10. As many of the units are communicating on a common network (ROBNET), with identical connectors, the installation is simplified. Try to mount the units within the standard cable length supplied with each unit, if possible. ROBNET Extension Cable (10m) is available from your distributor. 4.5 AP20 System Layout Figure 4-1 AP20 system layout with options 4.
Simrad AP20 Autopilot Note ! Do not try to remove the transmitter arm from the feedback unit. The unit is factory adjusted and need no further adjustment at installation than described below. As a starting point, it is desirable to set the transmitter rod to the inner limit of the outer slot if possible. (Refer to Figure 4-2). Drill and tap the rudder tiller arm so that the Y1 dimension is equal to the Y2 dimension (Use 4.2 mm drill and 5 mm tap).
Installation Note ! Due to space limitations, it may be necessary to cut the length of the transmitter rod to move the RF300 closer to the rudder post. Tighten the mounting screws for both the RF300 feedback unit and the transmitter rod ball joint. Observe the RF300 while someone turns the helm wheel through the complete travel from full port to full stbd. rudder to verify that the mechanical linkage to the RF300 is not obstructed. JUNCTION UNIT MAIN PCB RF RF + Rudder Feedb.
Simrad AP20 Autopilot 4.8 Cable connections Use only shielded cables. This includes Mains input, drive units and if necessary for the extension of the RF300 Rudder Feedback cable. The clutch/bypass cable and the solenoid cable should be 1,5 mm2 (AWG14). Signal cables should be 0.5 mm2 (AWG20) twisted pairs. The mains supply cable and the drive unit motor cable should have sufficient wire gauge. This will minimize voltage drop and allow the drive unit to operate at full power.
Installation Pull out each terminal before connecting the wires. Remove all Note! before putting on the terminal cover. strands Ground terminal The Mains input is not polarity protected on J300X-40.
Simrad AP20 Autopilot 4.10 Drive unit installation The relation between drive units, drive unit voltage, input voltage, drive output and interfacing to steering gear are shown in the table below. The AP20 system detects whether a reversible motor or a solenoid is connected and outputs the correct drive signal automatically. Refer to the connecting diagram for the different drive units on page 60 onwards. Installation instruction for the drive units are found in the manual for the individual units.
Installation LINEAR DRIVE UNITS MOTOR VOLTS JUNCTION UNIT MAX STROKE mm (in.) PEAK THRUST kg (lb.) MAX RUDDER TORQUE Nm (lb.in.) HARDOVER TIME sec. (30% load) PWR. CONSUMP. TILLER ARM mm (in.
Simrad AP20 Autopilot PREVIOUS MODELS DRIVE UNITS Note ! Model Motor voltage Junction unit Drive output Interface to steering gear RPU100, RPU150, (Reversible hydraulic pump) 12V J300X Proportional rate Hydraulic plumbing MRD100 (Reversible mechanical drive) 12V 24V J300X 12V to clutch 24V to clutch Proportional rate to motor Chain/ sprockets MRD150 12V 32V J300X 12V to clutch 32V to clutch Proportional rate to motor Chain/ sprocket When selecting DRIVE UNIT voltage in the Installation
Installation Connecting a hydraulic linear drive HYDRAULIC LINEAR DRIVE JUNCTION UNIT POWER PCB TB1 TB2 TB3 TB4 TB5 TB6 TB7 Sol. -Motor Sol. -Motor Bypass Clutch Single pole clutch/bypass switch Figure 4-6 Connecting a hydraulic linear drive Connecting a solenoid valve JUNCTION UNIT SOLENOID VALVE POWER PCB TB1 TB2 TB3 TB4 TB5 TB6 Sol. gnd Sol. gnd Sol. -Motor Sol. -Motor Sol. TB7 Sol.
Simrad AP20 Autopilot 4.11 Control unit installation Avoid mounting the control unit(s) where it is easily exposed to sunlight, as this will shorten the lifetime of the display. If this is not possible, make sure the units are always covered with the white protection cover when not used. Panel mounting The mounting surface must be flat and even to within 0.5 mm. • Drill the 4 mounting holes and make a panel cut-out according to supplied template. • Use the supplied gasket (P.N.
Installation Optional bracket mounting • Locate the cradle on the mounting site and mark the 4 holes for the fixing screws on the mounting surface. • Drill the 4 mounting holes and screw the cradle to the mounting surface. • Use the supplied screws to fasten the control unit to the left and right brackets. • Apply the front panel corners. • Use the two locking knobs to assemble the cradle with the left and right brackets and adjust the control head to best viewing angle.
Simrad AP20 Autopilot When installing a system, try to minimize total Robnet cable length by connecting all Robnet units to the nearest available Robnet connector. Total length of Robnet cable installed in a system should not exceed 50 m (165'). Examples of interconnecting Robnet units: CONTROL UNIT CONTROL UNIT JUNCTION UNIT CONTROL UNIT CONTROL UNIT JUNCTION UNIT NI300X NI300X Figure 4-9 Interconnecting Robnet units All connectors are crimp type.
Installation AP20 CONTROL UNIT JUNCTION UNIT MAIN PCB Alarm On-Off Vsys Vsys+ Bus+ Bus Bn Wh Pnk Gry Yel Gn ROBNET Figure 4-10 Control unit connection HOW TO REMOVE PINS: Extraction tool Pull the wire Insert tool in slot Note ! For installations that require special cable length, contact your Simrad distributor for information. AP21 connection If a Simrad AP21 is part of the system, use the Robnet connector in a free receptacle (see Figure 4-9).
Simrad AP20 Autopilot 4.13 RFC35 Fluxgate Compass installation Figure 4-11 RFC35 mounting The heading sensor is the most important part of the AP20 system and great care should be taken when deciding the mounting location. As the heading is displayed on the AP20 Control Unit, the heading sensor can be mounted at a remote location. Note ! An autopilot fluxgate compass or magnetic compass should not be installed on the fly bridge or in the mast.
Installation Use the supplied mounting kit and drill the holes through the centre of the slots in the sensor or the mounting brackets. Note ! The compass face plate on the RFC35 is the TOP. Never mount it upside down! Level the sensor as close to horizontal as possible.
Simrad AP20 Autopilot • Alternatively, if there is no free receptacle, cut the connector from the cable and connect the wires in parallel with the wires going from the junction unit to the control unit. Do not connect the yellow and the green wire, but secure them from connection to the terminal or chassis. J3XX JUNCTION UNIT RFC35R RATE COMPASS J1 NMEA J2 ROBNET J3 EXT.
Installation 4.15 R3000X Remote Control installation R3000X should be mounted in the supplied bracket that can be fixed by four mounting screws. The unit is weather proof and can be mounted outdoor. R3000X REMOTE CONTROL JUNCTION UNIT POWER PCB T B 1 T B 2 TB3 TB4 TB5 TB6 TB7 TB8 Gnd Port Stbd Lamp Yel G n R ed Blu REM OTE Figure 4-15 R3000X connection 4.16 S35 NFU Lever installation The unit is mounted to bulkhead or panel by two screws from the front.
Simrad AP20 Autopilot The unit is opened by removing the three screws on the back cover. Inside are two sets of micro-switches, a printed circuit board with a plug-in terminal and a jumper strap. 4.17 Interfacing With the AP20 autopilot system there are several possibilities to connect to other equipment for data exchange: 1. J3000X includes a single NMEA input/output port. 2. J300X includes two NMEA input/output ports and Clock Data interface to Anritsu and Furuno radars. 3.
Installation 4.19 Double NMEA input/output LORAN C (OR PLOTTER) J300X/J300X-40 JUNCTION UNIT MAIN PCB POWER PCB TB8 TB14 Gnd Sys. sel. RX1 RX1+ Vbat+ TX1 NMEA Output2 TX1+ TX2+ NMEA Input2 TX2 RX2 RX2+ GPS (OR PLOTTER) TB13 TB10 TB9 NMEA Input 1 NMEA Output1 Figure 4-18 Double NMEA connection 4.20 Additional NMEA output on Port 2 (Applies for AP20 V1R3/J300X V1R8 onwards) Output signal Output terminal Continuous output of compass heading on 10 Hz (10x/sec.) NMEA format 4.
Simrad AP20 Autopilot 4.22 Radar Clock/Data ANRITSU OR FURUNO RADAR J300X JUNCTION UNIT POWER PCB TB8 TB9 TB10 Clk_c Clk_h Data_h Data_c R ad ar Figure 4-20 Radar Clock/Data connection 4.23 IS15 Instrument installation For installation and operation of the IS15 instruments refer to separate manuals. NMEA In This connection will provide speed, depth and temperature input to the autopilot.
Installation Figure 4-21 IS15 Instruments / J3XX Connection Figure 4-22 IS15 Expander / J3XX Connection 20220505H 73
Simrad AP20 Autopilot 4.24 External Alarm The external alarm circuit has an open collector output for an external alarm relay or buzzer. The operating voltage for the circuit is the main supply voltage. Max. load on external alarm output is 0.9 Amp. J300X/J300X-40 JUNCTION UNIT POWER PCB TB6 TB7 TB8 TB9 Ext. alarm Figure 4-23 External alarm connection 4.
Installation no radar Clock/Data output as compared to J300X and J300X40). Configuration for Anritsu or Furuno is selected in the Installation Menu. 12V out can drive max. 2 IS15 instruments (max 250mA load), e.g. “Rudder” and “Compass”. 12V DC OUT + _ NMEA1 RX+ RX- TX+ TX- NMEA2 RX+ RXTX+ TX- NMEA3 RX+ RXTX+ TX- NMEA4 RX+ RX- TX+ TX- RED BLACK MAX 250 mA GPS SIGN. RET. SIMRAD RED STAND ALONE IS15 INSTRUMENT BLACK WHITE (YEL) GREEN GPS OR PLOTTER RED BLACK LORAN C SIGN. RET. SIGN.
Simrad AP20 Autopilot 4.26 CI300X Analogue Interface Unit The CI300X analogue interface unit is an optional module, designed to enable a variety of different equipment to connect into AP20 systems. The CI300X converts the analogue inputs into Robnet compatible signals for use by AP20 system components. The CI300X adds the following capabilities to the AP20 system, and allows connection of each of the following simultaneously: • • • – Magnetic compass connection with CD100A course detector.
Installation ANALOG MAGN. COMP CI300X COMPASS INTERFACE TB1 HI MAGNETIC COMPASS WITH CD100A COURSE DETECTOR 2 1 LO Vref 3 SIN 5 4 COS FLUXGATE COMPASS WITH SINE/COSINE OUTPUT TB2 SIN COS DC SUPPLY WIND VANE GND GYRO TB3 R1 R2 S1 S2 RGC10/RGC50 GYRO COMPASS S3 CD100 CONNECTIONS: ENAB TB5 AL1 AL2 NOT IN USE ALT. 1 HI LO Vref SIN COS BROWN WHITE GREEN YELLOW GREY ROBNET CONNECTIONS ALT. 2 MAGN. COMP NON FOLLOW UP STEERING LEVER MAGN.
Simrad AP20 Autopilot The 8,5 m (28') cable is terminated in the LFI3000 Mk2 Linear Feedback Interface according to the wiring diagram. Center the drives. Loosely secure the LF3000 to the supplied mounting bracket, across the center of the drive unit cylinder. Either cylinder may be used if there is a dual set up. You may mount the feedback in either direction, i.e. the shaft of LF3000 may point to port or starboard. Loosen the end bolt (a) used to secure the cylinder to the drive unit mount.
Installation Electrical connection LFI3000 Mk2 LINEAR FEEDBACK INTERFACE TB1 JUNCTION UNIT MAIN PCB TB2 RF RF+ Green Yellow Brown White White Brown Rudder Feedb. Figure 4-27 LF3000/LFI3000 Mk2 connections The previous LFI3000 had no centre block terminal for screen termination. Note ! 4.28 CD100A Course Detector On some installations the owner may prefer to use the boats own compass. The compass must be fully gimballed and have a flat surface underneath to fit the CD100A.
Simrad AP20 Autopilot 4.29 CDI35 Interface Locate the CDI35 as close to the compass as possible so that there will be no problem finding it in the event of a service. Put the two fixing screws in the slots and secure the unit to the bulkhead. Open the unit to access the screw terminals. Connect the cables as shown on the diagram below. Figure 4-29 CDI35 connections Note ! 80 CD100 has a connector that has to be cut off the cable.
Installation 4.30 Software Setup Procedure Description of Installation Settings The design of the AP20 includes advanced features that have simplified the installation and setup of an autopilot. The principle advantage is that manual adjustments that needed to be done on previous models are no longer necessary with the AP20. Note ! The installation settings must be performed as part of the installation of the AP20 system.
Simrad AP20 Autopilot on and if an attempt is made to access the AUTO or NAV modes prior to completion of setup. • The Dockside, Interface and Seatrial settings can only be accessed when the system is in STBY mode. • The values that are selected (also referred to as "PARAMETERS") from within the Installation Settings Menu, are stored in the memory of the AP20 system. No specific action is required to "SAVE" the selected values.
Installation INSTALLATION MENU ENTER INSTALLATION MENU BY PRESSING AND HOLDING THE NAV BUTTON FOR 5 SECONDS SYMBOLS SELECT OR CONFIRM BY ROTARY COURSE SELECTOR LANGUAGE MENU LANGUAGE GO TO NEXT MENU ITEM BY PRESSING STBD BUTTON ENGLISH DEUTSCH FRANCAIS ESPANOL ITALIANO NEDERLANDS SVENSKA NORSK REVERT TO PREVIOUS MENU ITEM DOCKSIDE MENU Yes Mode in STBY ? DOCKSIDE BOAT TYPE DRIVE UNIT VOLTAGE RUDDER CAL STBD RUDDER CAL PORT RUDDER TEST? TRANSITION SPEED No INTERFACE MENU I n p u t : GPS 1 GPS 2
Simrad AP20 Autopilot There are several actions that you can do once you have accessed the IM: • Answer YES to the question by rotating the course knob clockwise. • Change the selected item shown by rotating the course knob. • Proceed to the next item in the menu by pressing the STBD push-button. (Proceeding to the next item when presented with a question is the same as answering NO to the question.) • Proceed back to the previous item in the menu by pressing the PORT button.
Installation 4.31 Dockside settings The following menu items are accessible and can be set up in the Dockside Menu: • • • • • Boat type Drive Unit voltage Rudder Feedback calibration Automatic Rudder test Transition Speed In addition the Dockside Menu display will show: • Drive output • Clutch/bypass verification Select STBY mode and enter the IM as previously described. Select "Dockside" by pressing STBD [>] button and confirm by rotating the course knob.
Simrad AP20 Autopilot Refer to the drive unit table on page 58 for information. It is not possible to select a higher voltage than the input voltage. The CLUTCH/BYPASS voltage is automatically set to the same as the drive unit voltage. In Rudder Test, the AP20 system will automatically detect whether the drive unit is a reversible motor or solenoid operated.
Installation The display will show with the rudder in mid position: Dockside Turn Rudder max. STBD P 00 Adjust? S 00 Manually turn the helm to starboard until the rudder stops at maximum starboard rudder. Dockside Turn Rudder max STBD P 25 Adjust? S 25 The value shown on the display is the value read by the rudder feedback unit before any adjustment is made.
Simrad AP20 Autopilot Adjust the displayed angle the same way as for starboard adjustment. (This time you need not correct for wrong side if the rudder feedback unit is upside down). Note ! Rudder zero may still not be accurate but will be adjusted later during sea trial. Proceed to next menu item by pressing STBD [>] button.
Installation Dockside Boat type Planing Drive unit voltage 12V o Rudder max STBD 25 o Rudder max PORT 25 Rudder test Done Motor Drive out xx% Clutch NOT Installed Transition speed 00kn No Yes Dockside Boat type Planing Drive unit voltage 12V Rudder max STBD 25 o Rudder max PORT 25 o Rudder test Done Solenoid drive Clutch NOT Installed Transition speed 00kn No Yes or If the drive unit has a clutch or bypass, “NOT” will be excluded. Test of LF3000/LFI3000 Mk2 feedback 1.
Simrad AP20 Autopilot It is recommended that you set the transition speed to a speed that represents the speed where the hull begins to plane, or where you would manually change the parameters from HI to LO. The speed used for the automatic transition is obtained as follows: 1. Data from the source set for the INSTR channel in the interface setup. If this is a valid source of VHW (speed through the water) data, then this data is used to change the HI-LO parameter sets. 2.
Installation Abbreviated name Equipment / Usage NOTES GPS1 Primary GPS GPS2 Backup GPS LC 1 Loran Can be used as either NAV source or POS source. Also for VTG data for automatic AUTO HI/LO speed selection NAV1 Chart plotter NAV2 Other Nav source. INSTR Source of data for instrument screens and automatic HI/LO parameter selection RFC For use when selecting RFC35 fluxgate compass is between Simrad fluxgate connected to junction unit.
Simrad AP20 Autopilot Interface setup - input signal Setup item (abbrev.
Installation Setup item (abbrev.
Simrad AP20 Autopilot SETUP MENU to provide the user with choices of data sources, or identified to the AP20 where to look for various types of data. When you assign a hardware port to an abbreviated name, you are simply telling the AP20 system that when the user chooses an abbreviated name as a data source it should look to the hardware port assigned to the abbreviated name for data. • Step to the Interface part of the Installation Menu.
Installation Assign a hardware port to the name by turning the course knob until the hardware port is displayed along with the name. Proceed to the names on the list that shall be assigned by pressing STBD [>] button. Select appropriate hardware ports by turning the course knob, or exit from menu by stepping through the list of names by pushing STBD [>] button.
Simrad AP20 Autopilot 4.32 Sea Trial The Sea-trial menu can only be accessed if the Dockside Settings are done and confirmed. It is also recommended that the Interface Setup be performed prior to Seatrial settings.
Installation • Bring the boat up to cruising speed, and head directly into the wind. • If the boat has twin engines, synchronize the engine RPM's. • Set the trim tabs and stabilizers to have no effect on the boats heading. • Steer the boat manually on a steady course. • Confirm the rudder ZERO position by rotating the course knob clockwise.
Simrad AP20 Autopilot Seatrial Set Rudder zero Compass calibration Compass offset Heading Seatrial Set Rudder zero Compass calibrating 00 --345 Compass offset Heading Automatic tuning Automatic tuning No Yes 00 --345 No Yes 1. Begin turning the boat to starboard (can also turn to port). 2. Start compass calibration by turning the course knob clockwise. The display will flash “calibrating”. 3.
Installation (For multiple heading sensor offset procedure, refer to separate CI300X manual). The following display is presented when accessing the COMPASS OFFSET screen: Seatrial Set Rudder zero Compass calibration Compass offset Heading 00 000 345 Automatic tuning Dial in the correction by turning the course knob to offset the compass heading to agree with a known heading or bearing. The offset value can be either positive or negative.
Simrad AP20 Autopilot Recommended speed during Autotune varies with the type of boat, but should not exceed 10 knots. Autotune should not be performed at planing speed! For displacement boats use a speed that is approximately half the normal cruising speed (i.e. if cruising speed is 10 knots, do the Autotune at about 5 knots). The parameter values calculated during Autotune becomes the LO speed parameters. The HI speed parameters are automatically set to 66% of the LO.
Installation View parameters Parameter Rudder Cont.Rudder Autotrim Rudder Lim LO LO LO LO 0.50 1.40 40 sec. 20° Rudder Cont.Rudder Autotrim Rudder Lim HI HI HI HI 0.35 1.00 40 sec. 20° A boats steering parameters found by Autotune can be looked at and if needed changed under this menu item. The steering parameters can also be set manually instead of performing an Autotune.
Simrad AP20 Autopilot The two most important parameters that determine the performance of the automatic steering are Rudder and Counter Rudder. Rudder sets the rudder gain which is the ratio between the commanded angle and the heading error ( P-factor). 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.
Installation New course Correct setting of counter rudder, ideal response Autotrim standard value is 40 sec. which should work well on most boats. Rudder Limit should be kept at 20 degrees unless there is a need for more rudder when performing dockside manoeuvres. Caution ! In no event should the Rudder Limit be set to a value higher than the actual maximum rudder angle.
Simrad AP20 Autopilot Exit the Display Units menu by pressing STBD [>] button to proceed to the Master Reset menu, or press STBY to return to normal AP20 operation. Master Reset Language Dockside Interface Seatrial Parameters NMEA Test Display Master Reset SW V1R3 May 14 2002 09:38 0 00 Note ! No Yes A Master Reset is part of the final test at factory and will reset the memories to factory settings.
Installation transition speed is crossed (by more than 1 Knot higher or lower speed). • Try the Dodge function and the U-turn. • If a Non-Follow Up lever (or handheld remote) is connected, test the mode switching and verify Port and Stbd steering commands of the lever. • Set waypoints into each navigator connected to the system, and verify that the AP20 steers in NAV mode for each NAV source. • If the boat is a sailboat use the WIND mode and try the AP20 at different settings of the apparent wind angle.
Simrad AP20 Autopilot 5 5.1 MAINTENANCE Control unit The AP20 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 ROBNET connectors are fitted with a protection cap.
Maintenance 5.
Simrad AP20 Autopilot • Remove the PROM from the socket by means of the special extraction tool (p/n 44139806). • Insert the tool by pressing the two grip pins down into the two slots in the corners of the socket. • Squeeze the tool and pull out the PROM. • When inserting new PROMS, make sure the cut-off corner matches with the one in the socket. Press it gently into the socket.
Trouble shooting 6 TROUBLE SHOOTING An autopilot is a complex system and the performance is dependent of a proper installation and a successful sea trial. In the event of a failure, you will be helped by the AP20 software which contains several test features that will assist you in isolating a probable fault. Audible and visual alarms are given in the event a fault is detected. The audible alarm is reset by pressing any button (e.g. by changing mode from AUTO to STBY).
Simrad AP20 Autopilot Display readout Rudder test failed Rudder test failed (cont’d) 110 Probable fault Recommended action Following conditions may exist: a) Rudder feedback failure b) J3XX current overload c) Bypass/clutch overload Rudder moves in one direction only Poor connection to one of the solenoids (continuously running pump) Faulty Power PCB in junction unit Rudder test not completed within 2 min.
Trouble shooting Display readout Compass data missing Probable fault Recommended action No data from selected compass. Comm. failure active Cntrl Active control unit goes silent. J3XX current overload Drive unit shut down due to excessive load or short circuit. Low 15 volt Internal 15 Volt supply in Junction Unit below limit. 1. If more that one compass is connected to the system, refer to the USER SETUP menu to select a different compass. 2. Check connections/Interface menu. 3.
Simrad AP20 Autopilot Display readout Probable fault Recommended action Data failure J3XX Wrong checksum on memory parameters or variables. Junction unit will use default values. Perform a "Master reset" and make a new "Dockside set-up". Switch off and on again. If the alarm is repeated, replace Junction unit Main PCB. Com. failure with J3XX Junction Unit faulty or possible poor connections in Robnet cable from same. 1. Check Robnet connectors and cable. 2. Replace Junction unit Main PCB.
Trouble shooting Alarms in AUTO and NAV: The boat is off course Extreme weather conditions, too slow speed. Boats heading is outside fixed off course limit of 20 deg. (Automatic reset when inside limit.) 1. Check steering parameters (Rudder, Autotrim, Seastate-filter). 2. Increase Rudder value 3. Increase boat speed, if possible, or steer by hand. Missing or invalid NAV data. 1. Use NMEA Test Menu 2. Check Nav. receiver setup. Alarms in NAV NAV. data failure 6.
Simrad AP20 Autopilot SYSTEM DATA Compass Heading 245.4°M Rudder Angle S12.50° Steer Course 240° System Filter values --Fc: 00s db:00° Compass heading readout M=Magnetic, G=Gyro (True) Rudder angle. Normally between zero and 45 degrees. Steered course in Auto and Nav. mode. Values set by the automatic seastate filter (Auto and Nav Mode). FC=Filter time constant in seconds. Db=Deadband in degrees to each side of set course. Boat has to be outside db before autopilot responds.
Trouble shooting One of the following codes will be displayed: --- No data or no NMEA sentence containing the data needed available at the input port. OK Valid data found INV Message with invalid information. FRM Message has format failure such as a) Incorrect check sum b) Wrong contents in datafield(s) NMEA DATA --- XTE ---nm OK BWW 270 INV BRG POS/WP --OK POS/LAT N 58 33.222' OK POS/LON E 10 50.013' NMEA DATA OK COG 270 INV SOG ---Kt OK WIND R 45.
Simrad AP20 Autopilot NMEA (hardware) test Access the NMEA Test from the INSTALLATION Menu (see page 82). NMEA Test Loopback NMEA1 Loopback NMEA2 OK FAILED On the Main PCB in the junction unit disconnect the cables and connect TX1+ to RX1+ and TX1- to RX1-. Similar on the Power PCB connect the NMEA ports the same way; TX2+ to RX2+ and TX2– to RX2– (not available on J3000X). Select the NMEA test menu and verify that the hardware is OK. If not, replace the corresponding PCB(s) to rectify.
Spare parts list 7 SPARE PARTS LIST AP20 Control Unit 22084594 AP20 Control Unit 22084586 Standard mounting kit consisting of: 22084693 Gasket (2 mm) 22086029 Gasket (7.
Simrad AP20 Autopilot 22081640 22081434 22082036 22081350 22081368 PROM for all junction units J300X/J3000X Base plate J300X-40 Base plate Main cover Terminal cover RFC35 Electronic Fluxgate Compass 22081459 22081442 22081178 RFC35 Fluxgate Compass Installation accessories consisting of: 20104972 Mounting plate (2) 44140762 Screw 3.
Spare parts list CI300X Compass Interface 22081137 22082044 20193256 20193264 44138816 20191607 CI300X Compass Interface CI300X PCB Ass'y Box Cover Cover nutknobs Robnet Cable 7m NI300X NMEA Interface 22081129 20191607 22081913 20193256 20193264 44138816 NI300X NMEA Interface Robnet cable 7m NI300X PCB Ass'y Box Cover Cover nutknobs Robnet cables and connectors 22081145 20191607 20191615 20192266 44138048 22082697 22082705 Tools 44139707 44139806 44161792 20220505H Robnet cable 15 m (49") with one mal
Simrad AP20 Autopilot 8 GLOSSARY NMEA 0183 - 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.
Glossary BRG POS - WP – Bearing to a specified waypoint from present position. SOG - Speed over ground is the actual speed of the vessel relative to the ocean floor. COG - Course Over Ground - The actual direction of progress of a vessel, between two points, with respect to the surface of the earth, The vessels heading may differ from the course over ground due to the effects of wind, tide, currents. Magnetic variation - A magnetic compass points to the magnetic north pole.
Simrad AP20 Autopilot Index alarm external, 74 listing, 109 automatic tuning, 99 autotrim, 101 backlight, 31 cable Robnet, 63 specifications, 56 compass calibration, 97 maintenance, 106 offset, 98 selection, 33 compass interface installation, 76 specifications, 45 contrast, 31 control unit front panel, 14 installation, 62 maintenance, 106 specifications, 38 counter rudder setting, 102 course detector installation, 80 course detector interface installation, 80 specifications, 43 dockside settings, 85 drive
Index view, 101 position source, 32 radar connection, 72 rate compass installation, 67 remote control installation, 69 specifications, 47 rudder setting, 102 rudder feedback calibration, 86 installation, 53 maintenance, 106 specifications, 44 rudder limit, 101 rudder test, 88 rudder zero adjust, 96 sea trial, 96 seastate filter, 32 software program exchange, 107 20220505H software setup, 81 specifications, 37 speed selection automatic, 19 manual, 20 steering lever installation, 69 specifications, 47 syste
Simrad AP20 Autopilot TERMS OF WARRANTY, SIMRAD AS PRODUCTS SIMRAD warrants that every product shall be free of defects in material and workmanship as specified below: CATEGORY “A”: • Autopilots • Radars • Instruments • Navigators • Radiotelephones • Plotters • Gyro compasses incl. sensitive elements • Sonars • Echosounders • Trawl Instrumentation. These products are warranted for a period of 24 months on parts and 12 months on labour from date of purchase, except for category B items.
