Simrad AP26 manual

MANUAL Simrad AP26 and AP27 Autopilots[...]

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Instruction manual 20221586B 1 Instruction Manual This manual is intended as a re ference guide for operating and correctly installing the AP26 and AP27 autopilots. Great care has been paid to si mplify operation and set-up of the autopilots, however, an autopilot is a complex electronic system. It is affected by sea conditions, speed of the vessel[...]

Simrad AP26 and AP27 Autopilots 2 20221586B Document revisions Rev Date Written by Ch ecked by Approved by A 18.03.04 NG ThH ThH B 27.04.04 Document history Rev. A First edition. Rev. B FU50 substituted by FU25. Part no. for AC40 Power PCB ass’y, page 124 corrected. Added notes in chapter 3.19. Minor corrections in text and display pictures.[...]

Instruction manual 20221586B 3 Contents 1 System description ....................................................................................... 9 1.1 General .................................................................................................. 9 1.2 How to use this manual ...........................................................[...]

Simrad AP26 and AP27 Autopilots 4 20221586B 2.7 JS10 Joystick (NFU ) ........................................................................... 21 2.8 Automatic Steering ............................................................................. 22 Heading catch ....................................................................................[...]

Instruction manual 20221586B 5 INFO menu flowchart ......................................................................... 49 Alternative mode screens in STBY, AUTO and NAV ....................... 50 INFO menu and Main screen, active unit ........................................... 50 INFO menu and Main Screen, inactive unit .....................[...]

Simrad AP26 and AP27 Autopilots 6 20221586B SimNet network cables ....................................................................... 70 SimNet power and termination ........................................................... 70 3.20 Single NMEA input/ output ................................................................. 75 3.21 Double NMEA [...]

Instruction manual 20221586B 7 Set Rudder zero ................................................................................... 97 Minimum rudder ................................................................................. 97 Compass calibration ............................................................................ 98 Compass Offset .[...]

Simrad AP26 and AP27 Autopilots 8 20221586B 6 Trouble shooting ...................................................................................... 118 6.1 Alarms ............................................................................................... 118 7 Spare Parts List ..................................................................[...]

System Description 20221586B 9 1 SYSTEM DESCRIPTION 1.1 General Congratulations on the purchase of your new Simrad autopilot system and thank you for selecti ng what we feel is the most advanced autopilot system av ailable on the market today. Today, Simrad manufactures a comp lete range of autopilots for all types of vessels, from recreati onal bo[...]

Simrad AP26 and AP27 Autopilots 10 20221586B 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. 1.3 System components A basic autopilot system consists of the following units (refer to Figure[...]

System Description 20221586B 11 RATE COMPA SS AP27 CONT ROL UNIT REVE RSIBL E PUM P AUTOP ILO T COMPUT ER RF3 00 RUDDER FEDDBAC K Figure 1-2 AP27 Basic System 1.4 AP26 Control Unit A compact autopilot control fo r panel, bulkhead or bracket mounting. It has a multifunction LCD display for readout of autopilot data, mode keys and a rotary course kno[...]

Simrad AP26 and AP27 Autopilots 12 20221586B Autopilot computer comparison chart: AC10 AC20 (AC40) Supply voltage 10-28 V 10-40 V Motor current (continuous/pea k) 6/10 A 10/20A (20/40A) Clutch/bypass current 1,5 A* 1,5 A* Number of control units 2 7 NMEA 0183 ports (input/output) 1 2 Solenoid output x x Input for NFU control x x External alarm x Ra[...]

System Description 20221586B 13 floating ring core in a fluxgate co il and transformed to a digital signal read by the autopilot steering computer. RFC35 can operate as a low cost back-up compass for the AP26 and AP27 autopilots. NMEA compass (optional) A well performing compass th at outputs NMEA 0183 HDT or HDG messages at 10 Hz can be connected [...]

Simrad AP26 and AP27 Autopilots 14 20221586B 1.9 Optional equipment A series of optional equipment are available for the basic AP26 and AP27 systems. R3000X Remote Control A small handheld remote contro l with two push buttons for power steering or course selec tion (port and st arboard), and one push button with built-in lighted indicator for limi[...]

Installation 20221586B 15 2 OPERATION WARNING ! An autopilot is a very useful navigational aid, but DOES NOT under any circumstance 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 l[...]

Simrad AP26 and AP27 Autopilots 16 20221586B STBY PWR AUTO SETUP WIND NAV DODGE INFO Figure 2-2 AP27 Front Panel The control units shown above can operate as a stand alone unit in an autopilot system or combined in a mu ltistation system. In a multistation system the command can easily be transferred from one unit to another. Units not in control w[...]

Installation 20221586B 17 2.2 ON/OFF - Standby mode Note ! At first time turn on see paragraph 4.1. A single press on the STBY button switches the system ON and the following status displays are shown: Autopilot c om puter model P00 M00 S000 AC20 Simrad Self c heck Power board revision Main board r ev isi on Autopilot mo del HW rev. 00 SW 1.0.00 AP[...]

Simrad AP26 and AP27 Autopilots 18 20221586B A long press (2-3 sec.) on the STBY button switches the system OFF and during this time, the alarm will sound. Note ! In an emergency, it is possible, on a multistation system, to turn OFF the system at any c ontrol unit by pressing the STBY button for 2-3 seconds. STBY mode is the mode that is used when[...]

Installation 20221586B 19 Use the wheel to bring the "rudder" to midship position. Turn the wheel from lock to lo ck (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: Follow the operating i[...]

Simrad AP26 and AP27 Autopilots 20 20221586B 2.5 Non-Follow-Up steering (NFU) In Standby mode, the NFU disp lay is presented when the PORT or STBD button is pressed. The rudde r will move as long as the button is pressed and the rudder angle is shown on the display. Activates PORT rudder command Activates STBD rudder command Note ! When a NFU steer[...]

Installation 20221586B 21 2.6 R3000X Remote Control (NFU) Push button for Port and Stbd commands In STANDBY mode, the rudder will move as long as the Port or Stbd button is pressed. In AUTO mode and Wind modes the set course or set wind angle will change 1° each time the button is pressed. Note! If you keep the button pressed, it will automaticall[...]

Simrad AP26 and AP27 Autopilots 22 20221586B 2.8 Automatic Steering When AUTO mode is selected, th e autopilot automatically picks the current boat heading as the set course and maintains the simultaneous rudder angle. This gives a bumpless transfer at the mode change. The main Auto mode display shows the mode index and the set course. Alternativel[...]

Installation 20221586B 23 button. The autopilot will immedi ately counteract the turn and the boat will continue straight ahead on the heading read from the compass the very moment you pressed the AUTO button. A utomatic steering mode New “caught” heading: 305° Compass reading: 303° M (magnetic) or T (true) Rudder angle: 00°. Steering parame[...]

Simrad AP26 and AP27 Autopilots 24 20221586B 26 24 22 20 18 16 14 12 10 8 6 4 2 0 L O r e s p o n s e p a r a m e te r s H I r e s p o n s e p a r a m e te r s Tran s i t i on Spe ed set t o 9 Kno ts Tra nsition to LO param eters with inc reas ing speed : 10 Knots Tra nsitio n to HI paramet ers with decreasing speed: 8 Knots Speed Sailboat When sai[...]

Installation 20221586B 25 To toggle between LO and HI parameters, press the "AUTO" button two times quickly. Quick double press Notes ! 1. If you are in NAV or WIND modes you need not enter AUTO mode to manually change the par ameter set. Just make a quick double press on the AUTO button. 2. The manually selected setting (H I or LO) will [...]

Simrad AP26 and AP27 Autopilots 26 20221586B 2.12 Dodge in AUTO Dodging is useful in situations where you need to quickly take control of the helm to steer around an obstruction, and then resume the previous set heading. Dodging is activated by a quick double press on the TURN/DODGE/INFO button. When in DODGE mode the displaye d set course is the l[...]

Installation 20221586B 27 2.13 Tacking in Auto mode The tack function is only available in sailboats when the system is set up for SAIL boat type in the installation setup. Tacking in AUTO mode is di fferent from tacking in WIND mode. In AUTO mode the tack angl e is fixed and can be set in the Installation/Dockside menu. Tacking should only be perf[...]

Simrad AP26 and AP27 Autopilots 28 20221586B • The autopilot autosteering must be tested and determined satisfactory. • The navigation receiver (GPS, Ch art Plotter) must be in full operating mode with adequate signal characteristics for valid position and navigation data. • At least one waypoint must be entered and selected as the current ?[...]

Installation 20221586B 29 NAV − NAV mode − Course to steer (CTS): 260 is set internally by the autopilot to steer the boat onto the track line. − Cross track error (XTE): 0.010 nm to stbd. Note ! For Cross Track Error, the numbe r of decimals shown depends on the output from the GPS/chart plotter. Three decimals give a more accurate track kee[...]

Simrad AP26 and AP27 Autopilots 30 20221586B Regain manual steering by pressing the STBY button Setting the waypoint arrival circle For route navigation it is recommended to use automatic waypoint shift/change at a set waypoint arrival circle. The arrival circle should be ad justed according to boat speed. The higher speed, the wider circle. The in[...]

Installation 20221586B 31 2.15 Dodge in NAV When dodging in NAV mode, the cour se displayed as Course To Steer (CTS) is the boat’s reco mmended heading. However, the previous set course is stored by the autopilot. When DODGE is flashing on the display, the autop ilot is no longer in control of the steering and you must either steer the boat manua[...]

Simrad AP26 and AP27 Autopilots 32 20221586B 2.17 Wind vane steering Prior to entering WIND mode th e autopilot system should be operating in AUTO, with valid input from the selected wind transducer. The WIND mode is onl y available if the system has been set up for SAIL-boat in the Installation Menu, and the NAV/WIND source is set to WIND under th[...]

Installation 20221586B 33 Regain manual steering by pressing the STBY button 2.18 Tacking and gybing in Wind mode In WIND mode there is a tack ing and gibing aid function. Tacking in WIND mode as compared to AUTO mode can be performed when sailing with a pparent or true wind as the reference, and with a true wind angle of less than 90 degrees. The [...]

Simrad AP26 and AP27 Autopilots 34 20221586B Gybing Gybing is possible when the true wind angle is larger than 120° When a gybe is initiated, the wind angle will first be set to 170°T on the same side as the current wind angle. The main sail should now be hauled. With the main sail safely hauled, the wind side may be changed. This is done by pres[...]

Installation 20221586B 35 The gybe prevent function will be activated when the measured apparent wind angle becomes greater than 175° or when the wind angle gets opposite to the se t wind angle. Additional rudder will be commanded to keep the wi nd on the same side as the set wind angle. Caution ! The tack and gybe prevent functions are not a guar[...]

Simrad AP26 and AP27 Autopilots 36 20221586B [1] [2] [4 ] [3] [7] [5] [6] [8] Figure 2-3[...]

Installation 20221586B 37 Operating in WIND NAV mode Refer to Figure 2-3 with referenc es [ ] the associated displays and the criteria (bullets) below. • The set wind angle should be larger than the ‘Minimum wind angle’ set in the Inst allation/Dockside menu and smaller than 170° Apparent. • Information about when it is tim e to head direc[...]

Simrad AP26 and AP27 Autopilots 38 20221586B 2.20 Multiple station system In normal operation control is accessible from every control unit connected to the autopilot system. One control unit is "active" a nd provides the user with access to all functions. All remaining control units are "inactive" and have no effect on mode cha[...]

Installation 20221586B 39 2.22 User Set-up Menu In the AP26 and AP27, all mode s except NFU and FU have a complemental User Set-up menu. You can easily access the set- up menu by a quick double press on the NAV/WIND/SETUP button. Quick double press to access Scroll through the menu Use the course knob to change a value or a setting Alternating Cour[...]

Simrad AP26 and AP27 Autopilots 40 20221586B Nav/Wind This parameter will only be av ailable if ‘Boat type’ is set to ‘Sail’ in the Inst allation/Dockside menu (see Dockside settings, page 88). The ‘Nav/Wind’ parameter will configure the active mode on the NAV/WIND button. The following alternatives are available: • NAV • WIND Auto [...]

Installation 20221586B 41 ‘ WIND Apparent ’ is selected when you only want to steer to apparent wind. Appa rent wind steering is preferred when you want to achieve maximum boat sp eed. The autopilot will try to maintain a constant apparent wi nd angle to get maximum thrust from a given trim of the sails. ‘ WIND True ’ is selected when you o[...]

Simrad AP26 and AP27 Autopilots 42 20221586B Instrument Select Select the contents of the instrument page(s) to be available under the DODGE/TURN/INFO button (page 46). Step through the list of instrument pages by using the PORT or STBD button. Select the wanted information by rotating the course knob to fill the squares. Source Select Provides you[...]

Installation 20221586B 43 Notes ! 1. Simrad products will be id entified by the product name provided the data is avail able on SimNet. If data is provided via an NMEA 0183 port on the autopilot computer, the display w ill read NMEA-1 or NMEA-2. NMEA2000 products will have a special ID. 2. See note on page 74 and note 3 below. 3. In the event the S[...]

Simrad AP26 and AP27 Autopilots 44 20221586B DisLog Select the Log source. Depth Select the source for depth data. Course Adjust When using the ( PORT ) or ( STBD ) buttons in AUTO mode, you are changing the set course in 1° increments. If you prefer th e increments to be 10° each press (does not apply for sailboats), proceed as follows: Select C[...]

Installation 20221586B 45 Response The Autotune function in the AP 26 and AP27 is so refined that 80-85 % of the 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 im prove the performance of the autopilot. The Response control allo[...]

Simrad AP26 and AP27 Autopilots 46 20221586B If the actual wind angle is S-ing around the set wind angle or the rudder activity is too high, th e ‘Wind response’ should be reduced. Range: 1 – 7 Default: 3 See also other relevant setti ngs for WIND mode operation under STANDBY mode in this chapter. 2.23 INFO menu A number of instrument pages a[...]

Installation 20221586B 47 Nav mode For Nav mode the alternative mode screen gives you the name of the waypoint, bearing and distance to waypoint and rudder angle. This screen is also among the INFO pages. Step or scroll through the ava ilable instrument screens by pressing the PORT or STBD button or using the course knob. Compass Heading source Hea[...]

Simrad AP26 and AP27 Autopilots 48 20221586B Track data Cross Track Error Distance to Waypoint Position Latitude Longitude Nav data Waypoint ID Bearing Position – Waypoint Nav data Course Over Ground Speed over ground Nav data Course Over Ground Bearing Position – Waypoint Sea Temperature If you prefer not to have all the in strument pages avai[...]

Installation 20221586B 49 INFO menu flowchart 12 6 3 9 1 2 4 5 7 8 10 11 12 6 3 9 1 2 4 5 7 8 10 11 3-5 sec. tim e-out 3-5 sec. tim e-o ut INFO DODG E IN FO DODG E INFO DOD GE Long press Long press Toggle[...]

Simrad AP26 and AP27 Autopilots 50 20221586B Alternative mode screens in STBY, AUTO and NAV IN FO DODGE 12 6 3 9 1 2 4 5 7 8 10 11 INFO DODGE INFO DODGE 12 6 3 9 1 2 4 5 7 8 10 11 Long press Long press Long press Togg le 3-5 se c. tim e out 3-5 s ec. tim e out Main (STB Y , AUT O, NA V) Alte rnative INFO menu and Main screen, active unit 12 6 3 9 1[...]

Installation 20221586B 51 3 INSTALLATION 3.1 General This section provides detaile d information required to successfully installing the AP 26 andAP27 Autopilot system. The autopilot systems include seve ral modules that need to be mounted in different locations on the boat, and also need to interface with at least three different systems on the bo[...]

Simrad AP26 and AP27 Autopilots 52 20221586B c) Compass Offset adjustment d) Automatic tuning e) Viewing parameters 9. Test Autopilot Operation at Sea (refer to Sea Trial instructions, pages 96, 112) 10. Provide the user with training (Page 113) 3.3 Unpacking and handling Care should be taken when unpacking and handling the equipment. A visual insp[...]

Installation 20221586B 53 3.5 Autopilot System Layout STBY PWR AUTO SPEED SETUP NAV TURN pfjo^a=oPMMMu STBY AUTO WIND SETUP DODGE INFO STBY PWR AUTO NAV WIND SETUP DODGE INFO AUTO NAV STBY PWR Figure 3-1 Autopilot system layout with options 3.6 RF300 Rudder feedback installation The RF300 Rudder feedback unit mounts close to the rudder, and is mech[...]

Simrad AP26 and AP27 Autopilots 54 20221586B Attach the ball joint to the tiller arm, and connect the transmitter rod to the ball joint at the rudder tiller arm. Turn the helm wheel to set th e rudder tiller arm to approximate centre position. Rotate the RF300 transmitter leve r until it is set to centre position. (Use the alignment mark to line up[...]

Installation 20221586B 55 AUTOPILO T COMPUTER MAIN PC B Rudder Feedb. * * NON POLARIZED (COLOR I NDEPENDENT) RF + RF Figure 3-3 RF300 connection 3.7 Autopilot computer installation The autopilot computer is designed to operate in a location that provides ambient temperatures below +55°C (+130°F). Note ! The autopilot computer units (AC10, AC20 an[...]

Simrad AP26 and AP27 Autopilots 56 20221586B Refer to the table below for recommended cable sizes. Cable length Drive Unit Voltage 1. Breaker panel to autopilot computer. 12 V 24 V 2. Autopilot computer to Drive Unit motor (Length refers to each of the two cables) AWG mm 2 AWG mm 2 Up to 3 m (10 ft.) 12 2,5 12 2,5 Up to 6 m (20 ft.) 10 4 10 2,5 Up [...]

Installation 20221586B 57 Power Board terminals Main Board terminals Note! The Mains input is not polarity protected on AC40. Ground terminal TB9 and TB10 are not on the AC10 Power Board[...]

Simrad AP26 and AP27 Autopilots 58 20221586B 3.10 Drive unit installation The relations between drive units , drive unit voltage, autopilot computer, drive performance and interface to the steering gear are shown in the tables below. Refer to the connecting diagram for the different drive units on page 60 onwards. Installation instruction for th e [...]

Installation 20221586B 59 LINEAR DRIVE UNITS MODEL MOTOR VOLTS AUTO- PILOT COM- PUTER MAX STROKE mm (in.) PEAK THRUST kg (lb.) MAX RUDDER TORQUE Nm (lb.in.) HARD- OVER TIME sec. (30% load) PWR. CON- SUMP. TILLER ARM mm (in.) MLD200 12V AC10 300 (11,8) 200 (440) 490 (4350) 15 1,5-6 A 263 (10,4) HLD350 12V AC10 200 (7,9) 350 (770) 610 (5400) 12 2,5-8[...]

Simrad AP26 and AP27 Autopilots 60 20221586B PREVIOUS MODELS OF DRIVE UNITS Model Autopilot computer Drive unit voltage Input voltage (Mains) Drive output Interface to steering gear RPU100 (1,0l) RPU150 (1,5l) RPU200 (2,0l) (Reversible hydraulic pump) AC20 AC20 AC20 12V 12V 24V 12,24,32V Proportional rate Hydraulic plumbing RPU1 (1,4/2,0l) RPU3 (3,[...]

Installation 20221586B 61 Connecting a hydraulic linear drive AUTO PILOT CO M PUT ER POWER PCB TB1 TB2 TB3 TB4 TB5 TB6 By p ass Cl utc h Sol. -Motor Sol. -Mot or TB7 HYDR AUL IC LIN EA R DR IV E Singl e pole clutch/byp ass sw itch Figure 3-6 Connecting a hydraulic linear drive Connecting a solenoid valve AUTO PILOT COM PUTER POWER PCB TB1 TB2 TB 3 [...]

Simrad AP26 and AP27 Autopilots 62 20221586B 3.11 Control unit installation Avoid mounting the control unit(s) where it is easily exposed to sunlight, as this will shorten the lif etime of the display. If this is not possible, make sure the units are always covered with the white protection cover when not used. Caution ! Do not install the control [...]

Installation 20221586B 63 Optional bracket mounting • Locate the cradle on the mounti ng 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 pa[...]

Simrad AP26 and AP27 Autopilots 64 20221586B both ends are available in 1, 5 and 10 m length. For cable extension a Robnet2 T-Joiner is required. When installing a system, try to minimize the total cable length by connecting all Robnet2 units to the nearest available Robnet2 connector. Total length of Robnet2 cable in stalled in a system should not[...]

Installation 20221586B 65 On-Off Vsys+ AUTO PILOT COMP UTER M A IN P C B ROBN ET Bus+ Vsys Wh Bn Bus Pnk Gry Yel AP26 CONTROL UNI T REAR VIEW TB15 Figure 3-11 Control unit connection J1 and J2 (left) are Robnet2 c onnectors. J3 and J4 are SimNet connectors. AP27 connection If a Simrad AP27 is part of the system, use the Robnet2 connector in a free [...]

Simrad AP26 and AP27 Autopilots 66 20221586B mounting location. As the headi ng is displayed on the Control Unit, the heading sensor can be mounted at a remote location. The RC36 rate compass also cont ains a magnetic heading sensor, so particular attention must be paid to the location. It can be mounted on deck or bulkhead, at hwartship or al ongs[...]

Installation 20221586B 67 RA TE COM PA SS AP16, AP25, AP26 Figure 3-13 RC36 connection to autopilot control unit Plug the RC36 into a Robnet2 conne ctor (see Figure 3-9) or cut the connector from the cable and connect the wires in parallel with the cable shown in Figure 3-11. 3.14 RFC35 Fluxgate Compass installation (Optional back-up) The RFC35 Flu[...]

Simrad AP26 and AP27 Autopilots 68 20221586B 3.15 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. TB6 AU TOPILO T COM PUTER TB3 T B4 TB5 TB7 Stbd Port Gnd Gn Red B lu REMOTE TB8 TB1 TB2 R3000 X RE MOTE CON TROL Lam p [...]

Installation 20221586B 69 TB6 AUTOPI LOT COMPUTER POW ER PCB TB3 TB4 TB 5 TB7 S35 ST EERI NG LEV ER TB1 TB2 Lamp Stbd Port Gn d Brn /Wh Pnk/Gry Ye l Grn NOTE! Disr egard th e color code on t he termi nal lab el. REMOTE Figure 3-16 S35 connection The unit is opened by removing th e three screws on the back cover. Inside are two sets of mi cro-switch[...]

Simrad AP26 and AP27 Autopilots 70 20221586B SimNet network cables A SimNet unit has one or two ye llow SimNet connectors. There are no dedicated “in” or “out” c onnectors. Find the shortest and easiest way to route the SimNet cables from product to product and select the standard length ca bles from the SimNet accessory program. SimNet cab[...]

Installation 20221586B 71 `lj_f iltbo pfjo^a=fpNO ^i^oj qfjbo ifdeq rmmbo fkcl fkcl 10 WIND SETUP DODGE AUTO STBY PWR 10 1 1 TURN INFO NAV m^db ifdeq pfjo^a=fpNO rmmbo fkcl iltbo fkcl a^q^ ifdeq ^i ^oj qfjbo rmmbo fkcl iltbo fkcl pfjo^a=fpNO `lj_f Figure 3-17 SimNet network, small system iltbo fkcl rmmbo pfjo^a=fpNO fkcl a^q^ ifdeq qfjbo ^i^oj fkcl[...]

Simrad AP26 and AP27 Autopilots 72 20221586B m^db a^q^ ifdeq rmmbo fkcl pfjo^a=fpNO iltbo fkcl ifdeq `lj_f iltbo pfjo^a= fpNO fkcl rmmbo fkcl `lj_f qfjbo ^i^oj iltbo rmmbo fkcl pfjo^a=fpNO fkcl INFO NAV DODGE WIND PWR AUTO STBY ^i^oj qfjbo rmmbo fkcl pfjo^a=fpNO fkcl iltbo ifdeq qfjbo ^i^oj ifdeq `lj_f Figure 3-19 SimNet/NMEA2000 network, medium sy[...]

Installation 20221586B 73 STBY SETUP INFO PWR NAV WIND AUTO TURN DODGE 10 10 1 1 pfjo^a=fpNO qfjbo ^i^oj ifdeq iltbo fkcl fk cl rmmbo rmmbo pfjo^a=fpNO ifdeq ^i^oj qfjbo iltbo fkcl fkcl ifdeq pfjo^a=fpNO m^db fkcl rmmbo fkcl iltbo `lj_f `lj_f a^q^ Figure 3-20 Robnet2 and SimNet network[...]

Simrad AP26 and AP27 Autopilots 74 20221586B NAV WIND SETUP STBY AUTO PWR DODGE WIND DODGE NAV STBY AUTO PWR INFO Figure 3-21 Robnet2, SimNet and Roblink network Notes ! 1. Maximum total length of SimN et cable is 40 m (130 ft.) excluding the 30 m (99 ft.) of masthead cable. 2. It is not necessary to connect all autopilot control units to SimNet fo[...]

Installation 20221586B 75 3.20 Single NMEA input/output RX1 RX1+ MA IN PCB NM EA Input 1 Vbat+ Sy s. sel . Gnd TX1 TX1+ NMEA Output1 AUT OPILO T COM PUTE R TB1 3 TB1 4 Note NAV RECEIVE R OR PLOTTER (NMEA t alker) NMEA l istener IS15 RUDDE R IS1 5 COMPA SS RADAR Figure 3-22 Single NMEA connection Caution ! If an IS15 Instrument is power ed from TB14[...]

Simrad AP26 and AP27 Autopilots 76 20221586B 3.22 NMEA output on Port 2 Output signal Output terminal Output sentence Continuous output of compass heading at 10 Hz (10x/sec.) Rudder angle output at 5 Hz NMEA format Autopilot Computer Power PCB. NMEA2, TX2+, TX2– HDT (True) or HDG (Magn.) depending on heading source. RSA Rudder angle 3.23 NMEA Com[...]

Installation 20221586B 77 3.24 Radar Clock/Data AC2 0/A C40 AUTO PILO T CO MP UT ER POW ER PC B Ra da r TB8 TB 9 TB 10 Data_h Data_c Clk_h Clk_c SIM RA D/ AN RITS U OR FURUNO RADAR Figure 3-25 Radar Clock/Data connection 3.25 IS15 Instrument installation For installation and operation of the IS15 instruments refer to separate manuals. There are two[...]

Simrad AP26 and AP27 Autopilots 78 20221586B If IS15 Expander is used in the instrument system, the NMEA connections are made to this unit. See Figure 3-27. Figure 3-26 IS15 Instruments / Autopilot computer connection Figure 3-27 IS15 Expander / Aut opilot computer connection[...]

Installation 20221586B 79 3.26 External Alarm The external alarm circuit has an open collector output for an external alarm relay or buzze r. The operating voltage for the circuit is the main supply voltage . Max. load on external alarm output is 0.9 Amp. Ext. alar m TB6 AUTO PILOT COMPUT ER POWER PCB TB7 TB8 TB 9 Figure 3-28 Exter nal alarm connec[...]

Simrad AP26 and AP27 Autopilots 80 20221586B the bolt. Secure the feedback rod to the retainer plate using the two washers and the cap nut provide d. Adjust the location of the LF3000 Linear Feedback to allo w full travel of the hydraulic cylinder without causing the retain er plate to hit the end of the cylinder. Check that the outboard motor can [...]

Installation 20221586B 81 Electrical connection AUTO PI LOT C OMP UTER MAIN P CB RF RF+ Rudd er Feedb. LFI3000 Mk2 LINE AR FE EDB ACK INT ERF AC E TB1 White Brown TB2 White Brown Gre e n Ye llo w Figure 3-30 LF3000/LFI 3000 Mk2 connections[...]

Simrad AP26 and AP27 Autopilots 82 20221586B This page is intentionally left blank.[...]

Maintenance 20221586B 83 4 CONFIGURATION AND SETUP 4.1 First time turn on Before attempting to turn on the autopilot and perform an Installation Setup, the hardwa re installation and electrical connections must be complete d in accordance with the installation instructions. The design of the autopilot include s advanced features that have simplifie[...]

Simrad AP26 and AP27 Autopilots 84 20221586B 4.2 Description of Installation Settings Note ! The installation settings must be performed as part of the installation of the autopilot syst em. Failure to do so correctly may prohibit the autopilot fr om functioning properly! The Installation menu can only be accessed in STBY mode. The Installation Set[...]

Maintenance 20221586B 85 • The Installation Settings are gl obal except for display units and language, enabling settings to be distributed to all control units in the system. • The Seatrial settings are depe ndent on successful completion of the Dockside settings. 4.3 Installation Menu The Installation Menu is presented on the autopilot displa[...]

Simrad AP26 and AP27 Autopilots 86 20221586B DOCK SI DE SEATRIAL I NSTALLA TION MENU SEA-TRI AL MENU DOCKSI DE MENU ENGLISH DEU TSCH FRA NCAIS ESPANO L ITA LIAN O NED ERLAND S SVENSKA NORS K LANGUAGE MENU SERVIC E IN TER FA CE Mode in ST BY ? Yes No I NTERFACE MENU LANGUAG E Output SELE CT O R C ONF IRM BY COURSE KN OB PROCEED TO NEXT MENU ITEM BY [...]

Maintenance 20221586B 87 Language selection To access the language selecti on in the Installation Menu, confirm “Yes” by turning the course knob clockwise The autopilot can present the di splay text in eight different languages: English, Deutsch, Francais, Espanol, Italiano, Nederlands, Svenska and Norsk. Turn the course knob to select the lang[...]

Simrad AP26 and AP27 Autopilots 88 20221586B Select STANDBY mode and ente r the Installation Menu as previously described. Select Dockside by pressing STBD button and confirm by rotating th e course knob clockwise. Boat type Actual boat type is selected by turning the rotary course knob. The options are: Planing, Displacement and Sail. Type of boat[...]

Maintenance 20221586B 89 Rudder Feedback Calibration Make sure the RF300 is installed a nd aligned as pr. instruction in section 3.6 (or eventually section 3.27 for LF3000). This function enables you to compensa te for any non-linearity in the transmission between the rudder and the rudder feedback. Confirm Rudder feedback calibration to STBD by tu[...]

Simrad AP26 and AP27 Autopilots 90 20221586B Rudder Test Note ! If the boat uses power assisted st eering, it is important that the engine or electric motor used to enable the power assist steering be turned on prior to this test. Bring the rudder manually to mids hip position before starting the test. Caution ! Stand CLEAR of the wheel and do not [...]

Maintenance 20221586B 91 Test of LF3000/LFI3000 Mk2 feedback 1. Align engines to centre position; “zero rudder”. 2. Rev engines to 3-4000 rev/mi n and observe the rudder angle indicator on the autopilot, a 2° change in the reading should be accepted. 3. If the rudder angle exceeds 2°, c onnect the screen on the TB1 cable to the centre block t[...]

Simrad AP26 and AP27 Autopilots 92 20221586B 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 [...]

Maintenance 20221586B 93 Minimum wind angle (NORMAL) 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 in the tack-prevent function. It also applies when the autop ilot is navigating in W[...]

Simrad AP26 and AP27 Autopilots 94 20221586B Tack time (RACING) When performing a tack in WIND-mode, the rate of turn can be limited. This will give single handed sailors time to handle the boat and the sails during a tack. The tack time is the tim e needed for the sailor to initiate the tack, start using the winches and hauli ng the foresail from [...]

Maintenance 20221586B 95 4.5 Interface Settings Sets the format of the clock/data output for radars connected to the Autopilot Computer. Step to the Inte rface part of the Installation Menu. Turn the course knob clockwise to access the Interface Setup items. Use the course knob to select the connected type of radar. Note ! This setting is not avail[...]

Simrad AP26 and AP27 Autopilots 96 20221586B 4.7 Sea Trial Caution ! The Sea Trial must always be performed in open waters at a safe distance from other traffic. The Sea-trial menu can only be acc essed if the Dockside Settings are completed and confirmed. The seatrial settings are: • Rudder zero adjust (To tell the au topilot the precise midship[...]

Maintenance 20221586B 97 Set Rudder zero This adjustment should be made in calm sea and 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 RPM's. • Set the trim tabs and stabilizers to have no effect on the boat[...]

Simrad AP26 and AP27 Autopilots 98 20221586B Compass calibration This function will ac tivate the compass calibration procedure for Simrad compasses connected to Robnet2 and the Autopilot Computer terminals (HS). Notes ! 1. The RC36 Rate Compass that comes with the autopilot as standard will store the calibrati on and off-set data in its own memory[...]

Maintenance 20221586B 99 4. When the calibration is completed, (after having made approximately 1 1/4 turns), it will be confirmed by the display reading “Confirmed”. Compass deviation The heading from a magnetic head ing sensor will normally have a deviation when compared with the actual direction of the earth’s magnetic field. This is cause[...]

Simrad AP26 and AP27 Autopilots 100 20221586B Compass Offset After calibration, also check the compass readout against a known reference, a compensated compass or a bearing. If the reading has a fixed offset, proc eed to next menu item by pressing STBD button or return to STANDBY mode by pressing the STBY button. Note ! Offset correction is always [...]

Maintenance 20221586B 101 Wind Offset Note ! This offset only applies if you have a wind transducer directly connected to SimNet (IS12TW) or a wind transducer that outputs data on NMEA2000 format. The Wind Offset feature allows you to correct for a fixed wind angle offset. Steer the boat direc tly into the wind with a damping of 15s. Keep the bow a[...]

Simrad AP26 and AP27 Autopilots 102 20221586B Depth Offset Note ! This adjustment only applies to “smart” depth transducers that outputs depth on NMEA2000 format. NMEA0183 sentence ‘DPT’ contains offset and the dept h reading is from the surface. NMEA0183 sentence ‘DBT’ contai ns no depth offset and the reading will be from the position[...]

Maintenance 20221586B 103 It also is recommended to perform the Automatic tuning steering East or West, as this will yield the best balanced parameters. Note ! After the Automatic tuning has be en completed the rudder must be controlled manually, as the autopilot has returned to STBY mode. Caution ! The Automatic tuning function will take control o[...]

Simrad AP26 and AP27 Autopilots 104 20221586B Rotate the course dial clockwise until the transition speed is set to the desired value in knots. Range: OFF – 30 knots Default: 5 knots Proceed to next menu item by pressing STBD button. Init NAV Sets a firm or soft approach to the track line when entering the NAV mode at the first leg. The approach [...]

Maintenance 20221586B 105 • HI value parameters for automa tic steering at low speed with a power boat and when running with a sailboat. • LO value parameters for automa tic steering at high speed and when sailing into the wind or reaching with a sailboat. Step through the menu items by pressing the STBD or PORT buttons. Adjust the value by rot[...]

Simrad AP26 and AP27 Autopilots 106 20221586B Rudder sets the rudder gain whic h is the ratio between the commanded angle and the heading error. • Too little Rudder and the autop ilot fails to keep a steady course. • Too much Rudder gives unstable steering and reduces speed. • Low speed requires more Rudder than high speed. Counter Rudder is [...]

Maintenance 20221586B 107 Autotrim standard value is 40 sec. which should work well on most boats. Rudder Limit should be kept at 20 de grees unless there is a need for more rudder when performing dockside manoeuvres. Recall Autotuned? To recall the parameter values that were achieved during the Automatic tuning procedure, rotate the course knob cl[...]

Simrad AP26 and AP27 Autopilots 108 20221586B System Data Menu Select System data by rotating the course knob clockwise. Step through the menu by pressing the STBD button. The menu provides you with additional system data that can be useful when testing or trouble shooting the system. Steer compass Steering Compass readout, M=Magnetic, T=True Rudde[...]

Maintenance 20221586B 109 Decoding The incoming signals are decoded according to a built in priority table in the autopilot. Cross Tr ack Error and bearing information are taken from the NMEA messages with highest priority. For all data items, one of the following codes will be displayed: – – – No data or no NMEA sentence containing the data [...]

Simrad AP26 and AP27 Autopilots 110 20221586B NMEA signal monitor Near the NMEA terminals in the Autopilot Computer you will find a green monitor LED mark ed “RX”. A flickering LED indicates that a NMEA signal is received. It does not, however, qualify the contents of the message. Note ! Do not mix up the “RX” LED w ith the LED marked “TX[...]

Maintenance 20221586B 111 products in the group (synchronized). STAND ALONE: Source selection for the autopilot will not be transferred to other products in the Simrad Group (no synchronization). Backlight Illumination Set backlight to synchronize with one of the illumination banks (1-3) available on the SimNet, or to STAND ALONE for individual con[...]

Simrad AP26 and AP27 Autopilots 112 20221586B Master Reset Note ! A Master Reset is part of the final test at the factory, which will reset the memories to factory se ttings. Unless you need to clear all stored values during the in stallation setup procedure, you should not perform a Master Reset. Under Service in the Installation Menu, select Mast[...]

Maintenance 20221586B 113 • Try the Dodge and U-turn function. • If a Non-Follow Up lever (or handheld remote) is connected, test change of modes and veri fy port and starboard steering commands of the lever. • Set waypoints into each navigato r connected to the system, and verify that the autopilo t steers in NAV mode for each NAV source. ?[...]

Simrad AP26 and AP27 Autopilots 114 20221586B • Locating the Mains circuit break er and the separate SimNet circuit breaker if provided.[...]

Maintenance 20221586B 115 5 MAINTENANCE 5.1 Control unit The AP26 and AP27 Control Units 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 deterg ent). It is important to avoid using chemical cleaners and hydroc arbons such as diesel, petrol etc. Make sure th[...]

Simrad AP26 and AP27 Autopilots 116 20221586B 5.6 Exchange of software programme Autopilot Computer Figure 5-1 AC10/AC20/AC40 Main PC-Board • Remove the EPROM 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 t[...]

Maintenance 20221586B 117 Autopilot Control Unit You will need a special kit for a PC to perform the programming of the Control Unit. Orde r the following from Simrad: Programming kit P/N 22088595. Instructions are included. Figure 5-2 Part of AP26 PCB Figure 5-3 Part of AP27 PCB Remove the cables and unscrew the screws that secure the back cover. [...]

Simrad AP26 and AP27 Autopilots 118 20221586B 6 TROUBLE SHOOTING An autopilot is a complex syst em. Its performance dependents on a proper installation and a successful sea trial. In the event of an autopilot failu re, the autopilot’s numerous test features will assist you in isolating a probable fault. Audible and visual alarm is provided for ev[...]

Trouble shooting 20221586B 119 Display readout Probable fault Recommended action Shallow water (Only if AP25 is part of the system) The depth is inside the set limit or outside the range. Depth data is missing. 1. Carefully observe the actual depth. 2. Adjust the alarm limit if not hazardous. 3. Steer to safe depth, the alarm will reset automatical[...]

Simrad AP26 and AP27 Autopilots 120 20221586B Display readout Probable fault Recommended action Rudder test failed Following conditions may exist: a) Rudder feedback failure b) Autopilot Computer current overload c) Bypass/clutch overload Refer to recommended actions for the specific probable faults. Rudder moves in only one direction a) Poor conne[...]

Trouble shooting 20221586B 121 Display readout Probable fault Recommended action Failure active Control Unit Active control unit goes silent. 1. Press the STBY button on an "Inactive" unit to reset. 2. Check/repair Robnet2 cable. 3. Replace the control unit PCB. ACXX current overload The drive unit shut down due to an excessive load or a [...]

Simrad AP26 and AP27 Autopilots 122 20221586B Display readout Probable fault Recommended action Com. failure with ACXX Faulty Autopilot Computer or poor Robnet2 cable connections from the same. 1. Check Robnet2 connectors and cable. 2. Replace Autopilot Computer Main PCB. Low supply voltage Mains voltage less than 9 Volts 1. Verify in the System Da[...]

Spare parts list 20221586B 123 7 SPARE PARTS LIST AP26 Control Unit 22087910 AP26 Control Unit 22088439 AP26 mounting kit consisting of: 22084529 Cabinet corners 22085807 Gasket 44165181 Screw 3.5x19 44165645 Screw 3.5x32 22085872 Optional mounting br acket consisting of: 44148906 Screw M4x12 22084776 Right bracket 22084784 Left bracket 22084859 Lo[...]

Simrad AP26 and AP27 Autopilots 124 20221586B 22081251 AC20 Power PCB Ass'y 22081715 AC10 Power PCB Ass'y 22088694 AC40 Power PCB Ass'y 22088447 AC Main PCB Ass'y (All models) 22088462 PROM for all autopilot computers 22081434 AC10/AC20 Base plate 22082036 AC40 Base plate 22081350 Main cover 22081368 Terminal cover RFC35 Electro[...]

Spare parts list 20221586B 125 24005621 Robnet2 cable, 5 m (16’) with two plugs 24005639 Robnet2 cable, 10 m (33’) with two plugs 24005647 Robnet2 cable 15 m (49’) with one plug 24005662 Robnet2 joiner SimNet cables and accessories 24005829 SimNet cable 0.3 m (1’) 24005837 SimNet cable2 m (6.6’) 24005845 SimNet cable 5 m (16.6’) 2400585[...]

Simrad AP26 and AP27 Autopilots 126 20221586B 8 TECHNICAL SPECIFICATIONS 8.1 AP26 and AP27 Autopilot System Boat size and type: ..................... Up to 80 feet, Power, Displacement, Sail Steering system types: ............... Hydraulic, Mechanical Inter-unit connection: ................ RobNet2 ne twork or two-wire supply/data System ON/OFF: ..[...]

Technical specifications 20221586B 127 Heading sensors: Standard: ........................... RC25 Rate Compass Options: ............................. RFC 35 Electronic Fluxgate compass NMEA Compass (Not AC10) Simrad RGC50/RGC10 gyrocompasses * * By GI51 Course Selection: ....................... Rotary course dial and push button Alarms: ..........[...]

Simrad AP26 and AP27 Autopilots 128 20221586B Display: Type: ................................. Backlit LCD matrix display Resolution: ........................ 80 x 32 pixels Colour: ....................................... Black Illumination: .............................. Adjustable in 10 steps Environmental Protection: ......... IP56 from front, I[...]

Technical specifications 20221586B 129 8.3 AP27 Control Unit Dimensions: ............................... See Figure 8-2 Weight: ...................................... 0,57 kg (1,25 lbs) Power consumption ................... 3 W Display: Type: ................................. Backlit LCD matrix display Resolution: ........................ 80 x 32 p[...]

Simrad AP26 and AP27 Autopilots 130 20221586B 8.4 Autopilot Computers Dimensions: ............................... See Figur e 8-3 and Figure 8-4 Weight: AC10/AC20 ...................... 1,3 kg (2,9 lbs.) AC40 ................................. 2, 8 kg (6,2 lbs) Supply voltage: AC10 ................................. 10- 28V DC AC20/AC40 .............[...]

Technical specifications 20221586B 131 Figure 8-3 AC10/AC20 Autop ilot computer - Dimensions Figure 8-4 AC40 Autopilo t computer - Dimensions[...]

Simrad AP26 and AP27 Autopilots 132 20221586B 8.5 RC36 Rate compass Dimensions: ............................... See Figure 8-5 Weight: ...................................... 0,9 kg (2,0 lbs) Supply and interface: ................. RobNet2 Power consumption: .................. 0,9 watts Automatic Performance: Calibration: ....................... Aut[...]

Technical specifications 20221586B 133 8.6 RFC35 Fluxgate compass Dimensions: ............................... Same as RC36. See Figure 8-5 Weight: ...................................... 0,9 kg (2,0 lbs) Supply and output: ..................... Polarity independent 2-wire supply with superimposed pulse width modulation Automatic Performance: Calibra[...]

Simrad AP26 and AP27 Autopilots 134 20221586B Transmission link: ..................... Stainless 350mm (13.8") with 2 ball joints. Ball joint stud for rudder arm requires 4.2mm diameter hole and 5mm tap. Figure 8-6 RF300 Rudder Feedback - Dimensions Figure 8-7 Transmissi on link - Dimensions[...]

Technical specifications 20221586B 135 8.8 R3000X Remote Control Dimensions: .... See Figure 8-8 Weight: ............ 0,4 kg (0,9 lbs) Material: .......... Epoxy coated aluminium Protection ........ IP56 Safe distance to compass: 0.15 m (0.5 ft.) Temperature range: Operation: ... –25 to +55 °C (–13 to +130 °F) Storage: ....... –30 to +80 °[...]

Simrad AP26 and AP27 Autopilots 136 20221586B 8.10 FU25 Steering Lever Dimensions: ............................... See Figure 8-10 Handle can be mounted poin ting upwards or downwards. Weight: ...................................... 1.2 kg (2.6 lbs.) including cable Material:..................................... Polyacetal (POM) Environmental Protec[...]

Technical specifications 20221586B 137 8.11 IS15 Rudder Dimensions: ............................... See Figure 8-11 Weight: ...................................... 225 grams Environmental Protection: ......... IP56 from front, IP44 from rear Power requirement: .................. 12/24 VDC, 70 mA (100 mA max with max lighting) Safe distance to compas[...]

Simrad AP26 and AP27 Autopilots 138 20221586B Figure 8-11 IS15 R udder - Dimensions 8.12 SimNet Maximum number of products connected in a network:...................................... 50 Maximum cable lengt h: ............. ......................................................... 120 m (400’) Bit rate of the bus: ..................... .........[...]

Technical specifications 20221586B 139 8.13 IP protection Each part of a Simrad autopilo t system has a two digits IP protection code. The IP rating is a method to cla ssify the degree of protection against solid objects, water i ngress and impact afforded by electrical equipment and enclosures . The system is recognised in most European countries [...]

Simrad AP26 and AP27 Autopilots 140 20221586B 8.14 NMEA and SimNet messages NMEA018 3 messages and da ta overview for A C10, A C20, A C40 Message iden t. HDG HDM HDT RSA MWV 2) VPW 2) DBT DPT MTW VHW 2) VLW VBW GGA GLL RMA Data source: (n/p/h=nav/pos/h ead ing source, c=calculated) : h h h c ppp A ccept. cond . (N=nav. flag, P= pos. flag) : PPP Sta[...]

Technical Specifications 20221586B 141 Remarks: RMC 2) VTG 2) APB 2) BOD BWW BWC BWR RMB 2) XTE HSC ppnn n n nnn c P P* N N N N* N* N N * Pos flag or NMEA v ersion 3.01 P N N N N/ P=nav/po s data warning, *DGPS i f flag=2 ddddx dddd ddddx dddd dddd dddd dddd dddd dddd dddd d dddd 3 ddddx 2 3 dddd x 1 ddddx 64 3 2 x 2 3 dddd x 21 3 x 6 5 1 3 2 4 ddd[...]

Simrad AP26 and AP27 Autopilots 142 20221586B SimNet/NM EA 2000 messages and dat a overview Message ident. 127250 127245 130306 128267 130310 128259 128275 65408* 129025 129029 129026 130577 128259 127250 HC Wa / Wt D WaT WaS Dl Dl PPPPPP Compass Data Compass heading 1) 1 Rudder Data Rudder angle Wind Data Apparent wind angle 1) 1 Apparent wind spe[...]

Technical Specifications 20221586B 143 Remarks: 129283 129284 65357* 65408* 127237 * Sim Net proprietary NN N C dd dx dd dx dd dx dd dx dd dx dd dx d d d x In INFO views Depth+Offset i s displayed if x offs et is present dd dx dx dd dx dd dx dd dx x dd dx 1x 1d d d x 1d d d x 1d d d x 1d d d x 1d d d x 1d d d x x x* x* x* x *O nly transm itted i f [...]

Simrad AP26 and AP27 Autopilots 144 20221586B 9 GLOSSARY Apparent wind – The speed and direction from which the wind appears to blow with referenc e to the bow when the boat is moving (also called relative wind). Arrival alarm – An alarm signal issued by a GPS/chartplotter that indicates arrival at or at a predetermined distance from a waypoint[...]

Glossary 20221586B 145 Magnetic variation - A magnetic compass points to the magnetic north pole. The differenc e between this direction and true north is the magnetic varia tion. 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 v[...]

Simrad AP26 and AP27 Autopilots 146 20221586B True bearing – Bearing relative to true north; compass bearing corrected for compass error. True heading – Heading relative to true north (the meridian). Waypoint - A discrete point, stored in a navigator, located on the surface of the earth. Normally this point will be identified by Lat/Lon coordin[...]

Index 20221586B 147 10 INDEX A alarm external, 79 listing, 118 apparent wind, 32, 41, 144 arrival circle, 30 auto setup, 83 automatic tuning, 102 autopilot computer installation, 55 maintenance, 115 specifications, 130 autotrim, 107 B backlight, 39 boat type, 88 C cable Robnet, 63 specifications, 55 compass calibration, 98 deviation, 99 installatio[...]

Simrad AP26 and AP27 Autopilots 148 20221586B interfacing, 69 IP protection code, 139 L language, 87 layline, 37, 41 linear feedback installation, 79 lock function, 38 log source, 43 loopback, 110 M master reset, 112 minimum rudder, 97 minimum wind angle, 93 modes of operation standby, 17 mounting bracket, 63 panel, 62 multiple station, 38 N Nav so[...]

Index 20221586B 149 system basic, 10 components, 10 specifications, 126 system data, 108 T tack angle, 93 tack time, 33, 94 tacking in auto mode, 27 in wind mode, 33 transition speed, 23, 103 True bearing, 146 True heading, 146 true wind, 32, 41 U user setup menu, 39 user training, 113 U-Turn, 25 V VMG, 37, 41 W water speed source, 43 water tempera[...]

Simrad AP26 and AP27 Autopilots 150 20221586B This page is intentionally left blank.[...]