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Navman 4433 Fish Finder User Manual

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1. sesssseeeeeeenen 23 6 1 1 The setup mode is divided into 4 setup groups 28 6 1 2 How to access setup mode 23 6 1 3 How to change a setting 23 6 1 4 How to return to previous mode 23 6 1 5 Factory default settings nennen 23 6 2 Lighting setup group Lit cc eot pe rrt neret rette ine cet 25 NEXUS AUTOPILOT 6 3 Autopilot setup group P ss sseessessessnesressnsneuranresnruernanrnerennrnsraurenraarnusrnarensennornseanennnaane 25 6 3 1 PO Return RET 6 3 2 Pto Rudder RUD eec temet cH 25 1 1 5 P2 Damping of compass heading SEA rann 26 6 3 3 P3 Counter Rudder CRD 126 6 3 4 P4 Damping of wind WSE cessent eee eee en eee nennen 26 6 3 5 P5 Automatic Trim Calibration ATC 6 3 6 P6 Adaptive Control ADC sese 27 6 3 7 P7 Automatic Pilot Calibration APC 27 6 3 8 P8 Rudder Reduction Speed RRS 27 6 3 9 P9 Rudder angle limit LIM 28 6 4 Alarm setup group A 28 6 4 1 A0 Return BET reri trn teet eret pv Eo te vette eere 28 6 4 2 A1 Pilot Course Alarm PCA 28 6 4 3 A2 Timer watch alarm TMR 28 6 4 4 A3 Cross Track Error alarm XTA eseeeeennnne 28 6 4 5 A4 Push button beep KEY
2. eeeeeeeeeeeeeeeeeeener nennen enne 29 6 5 Compass setup group C ssssersrrsarresseersrsseraressrrrnrenerrnrrnrrrer sn rare aren rr rare arne nnne 29 6 5 1 CO Return RET 129 6 5 2 C1 Magnetic heading MAG 29 6 5 3 C2 Local magnetic variation VAR 29 6 5 4 C3 Auto deviation Auto DEV 29 6 5 5 C4 Check auto deviation Auto CHK 30 6 5 6 C5 Clear auto deviation Auto CLR 90 6 5 7 C6 Adjust compass alignment ADJ 31 7 Maintenance eere ennt 32 7 1 Instrument maintenance esessssssessssseseseeeeeeee nenne anne ena RKK Keen nnn nnne 32 7 2 Drive unit maintenance and inspection schedule 32 8 Fault finding eese 33 8 1 General sind 8 2 Symptom Cause Action eee 33 8 3 Nexus Network error messages with cause and remedy 136 9 Specifications erecti etre sente Rennes 98 9 1 Technical Specifications 98 9 1 1 Autopilot inStrUrment c c rct e HER e RR RERO 38 9 1 2 Servo Unit A 1500 5 arum nte Ete E er URS 38 9 1 3 Servo Unit A 1510 a redde ee aa a ln na S SE ieee 38 9 1 4 Rudder Angle Transmitter essen 38 9 2 Nexus Network specification esses 39 9 3 ACCOSSOMOS m 39 9 3 1 AUtopilot instrument eterne eerte rnnt rin iniaiaiai 39
3. Minus Plus 45 NEXUS AUTOPILOT 10 Warranty WARRANTY GENERAL All our products are designed and built to comply to the highest class industry standards If the products are correctly installed maintained and operated as described in the installation and operation manual they will provide long and reliable service Our international Network of distributors can provide you with the information and assistance you may require virtually anywhere in the world Please read through and fill in this warranty card and send it to your national distributor for product registration LIMITED WARRANTY The warranty covers repair of defective parts due to faulty Manufacturing and includes labour when repaired in the country of purchase The warranty period is stated in the product manual and commences from the date of purchase The above warranty is the Manufacturer s only warranty and no other terms expressed or implied will apply The Manufacturer specifically excludes the implied warranty of merchantability and fitness for a particular purpose CONDITIONS e The supplied warranty card and receipt with proof of purchase date must be shown to validate any warranty claim Claims are to be made in accordance with the claims procedure outlined below The warranty is non transferrable and extends only to the original purchaser The warranty does not apply to Products from which serial numbers have been removed faulty installation or incorrect f
4. 9 3 2 Nexus Remote Control instrument sese 39 9 3 3 Nexus analog Rudder Angle instrument 40 9 3 4 Nexus Multi Control instrument with Server sene 40 9 3 5 External alarm buzzer eessse 40 9 3 6 NFU jog lever 40 9 3 7 Other NX2 Accessories s zes iecit ene e p eee va I e eod 40 9 4 Abbreviations iin pnt ne pere ENEA i IE hanger ashen 43 10 Warranty 46 11 Installation 48 1 1 Installation getieral 5 25 terni re re ire ta I on E ER e rerit 48 1 2 Installation alternatives 49 1 3 Wire thickness s ssonsssssssressrorsenssrsonsersrannesrnsnssrrsnnnssrsnnRs KR ne KARA RKA nA ARKA BRA RKA RR KARA ARK RDR An Kon 49 1 4 Servo Unit EET E E 49 AUTOPILOT NEXUS 11 4 1 Location of Servo Unit ian eee t tq sse ee eee 49 11 4 2 Installing Servo Unit M 11 4 3 Connecting Servo Unit itidem aa eir tee eere eee 50 11 4 4 EIAS eT 52 11 4 5 Dip switches 52 11 4 6 Trim potentiometers 11 4 7 NMEA connections 5 Rudder angle transmitter 58 6 Pumpset o 2 53 11 7 Linear rive ee DD 1 8 Solenoid valve controlled pumpset 455 9 Other Accessories sss 2 55 12 Dockside Testing 56 12 1 Preparations 56 12 2 Dockside First Start 56 12 3 How to remove air from sy
5. CPU to GPS communication error Reset power i 36 AUTOPILOT NEXUS 23 DGPS RTCM data ignored Change the DGPS RTCM setting 24 GPS bad fix no fix position time expired Check GPS antenna location at one fix 25 No Autopilot response Object is not Check wiring connections and fuse connected Ree SRT because there is too high input voltage master bank memory is full DGPS mode is interrupted Check the DGPS receiver Reserved for Nexus Autopilot Servo See Nexus Autopilot manual Unit 42 Bad transducer input bad Reset power measurement Reserved for Nexus Autopilot Servo Unit Autopilot standalone connection Autopilot Servo Unit Check compass connection at Nexus Autopilot Nexus Network connection Server or at the Compass Data instrument Received wind data input failure Check wind wire connection Autopilot calibration failure n E APC routine again in calm water stand alone connection settings in the navigator Nexus Network connection settings Autopilot Network re initialisation 41 Failure to initialise EEPROM Reset power 37 NEXUS AUTOPILOT 9 Specifications 9 1 Technical Specifications 9 1 1 Autopilot instrument Dimensions Weight Enclosure Instrument cable Power supply Power consumption Current consumption 113 x 113 x 23 mm 4 3 x 4 3 x 0 9 260 g 9 17 oz Water proof 0 4 m 167 12 V DC 10 16 V The instrument i
6. For the Servo Unit Rudder Angle Transmitter Pumpset and Linear Drive the following material is not supplied and need to be sourced or made locally safety switch power cables screws bolts nuts and support bracket for mounting hydraulic fittings piping and oil This is because most installations differ 11 2 Installation alternatives This section covers installation of Autopilot instrument Servo Unit and Rudder Angle Transmitter For the installation of compass transducer pumpset linear drive see separate instructions supplied with each product You can install the Nexus Autopilot for two different applications e Stand alone Autopilot application e Nexus Network application by connecting it to the Nexus Network 11 3 Wire thickness Important Use the following table to determine wire thickness Total distance from battery to Servo Unit and distance from Servo Unit to pumpset must be used to determine the wire thickness from the table Cable Length Wire Size Wire Size Max m ft mm AWG 3 10 Make sure that the wire size between the battery and the point where you will connect the wire to the Servo Unit is big enough to secure power supply to all other connected electrical units on board If you are in doubt ask your local electrician 11 4 Servo Unit 11 4 1 Location of Servo Unit The Servo Unit must be mounted on a dry flat and vertical surface below deck at least 500 mm 20 from radio receiving equ
7. OUTLINE COVER OUTLINE INSTRUMENT aca Fdo id WARRANTY CARO SVED TO YOUR NATIONAL OISTRIBUTOR Multi Control Instrument Hi aoooaa aoadoaao 000000 ooo0000 dao Bog 000 Bag 000 888 nonoad oonoo0n DooooOaQ Installation and Operation Manual English NEXUS AUTOPILOT 1 1 Welcome aboard Thank you for choosing a Nexus Autopilot Through this manual we would like to help you install and operate your Nexus product We are convinced that you will appreciate the useful functions To get the most out of your Nexus product please read through this manual carefully before you start your installation If you see us at a show please stop by and say hello Good luck and happy boating 1 2 Capabilities Accuracy reliability and simplicity of use are key features of the Nexus microprocessor controlled Autopilot Whether the need is for minimised fuel consumption improved navigational accuracy or simply more enjoyable yachting the Nexus Autopilot is the right navigational aid to provide precision steering under all sea conditions Due to the very stable fluid dampened compass with high gimbaling angles and automatic trim feature this Autopilot is suitable for sailing and powerboats User adjustable settings make it possible to fine tune each boat yet factory default settings and automatic calibration allow simple operation with minimal operator input The Nexus Autopilot is
8. has been selected Solenoid valve controlled pumpset should be adjusted to speeds of 14 seconds hard over to hard over or slower for maximum accuracy Higher rudder speeds will require increased anti hunt settings to prevent hunting overshoot of the rudder To adjust anti hunt setting first complete procedures in described in sections Setup Dockside Testing and Sea Trials Activate the Autopilot and with the pumpset running make 10 course changes to port and starboard If the rudder hunts i e oscillates rapidly back and forth during these course changes gradually increase the anti hunt control i e adjust VR1 trim potentiometer until the rudder remains stable Do not increase the anti hunt control any more than necessary as this can begin to degrade course accuracy 11 9 Other Accessories Install any accessories as per their instructions and connect them according to wiring as shown in Servo Unit wiring drawing When you finished the installation perform the Dockside Testing routine 55 NEXUS AUTOPILOT 12 Dockside Testing 12 1 Preparations Start checking the following e Familiarise yourself with the operating procedures by reading sections Operation Function and Setup e Double check all wiring connections and dip switch settings prior to connecting power to the system e Make sure rudder angle limit LIM is set to 99 OFF e Ensure that the oil reservoir is 3 4 full and maintain that level throughout
9. ATC Possible settings are 0 Minimum to 9 Maximum Set by the APC routine ATC is not critical It constantly compares the course set against L H L pu the course steered and slowly applies more rudder as necessary to B reduce any errors to zero Errors may be due to wind waves or H ATE other unbalanced forces such as single screw operation of a twin screw boat an off centre tow or weather helm on a sailing boat etc If the trim time is set too high it will take a long time to eliminate the course error If it is set too low it can start to degrade course stability In general longer trim times higher settings should be set for large boats and sailing boats and shorter trim times lower settings for small boats and high speed planning boats The factory default setting should be acceptable for all but extreme applications 6 3 6 P6 Adaptive Control ADC r Possible settings are OFF or On L H L PE This function is reserved for future functions OFF RIC 6 3 7 P7 Automatic Pilot Calibration APC Possible settings are ON or OFF The APC routine automatically sets RUD SEA CRD ATC p Hi and RRS LVL 7d D horns OFF APE The Autopilot will not function unless the boat pass the APC routine The APC will automatically determine and correct how wires and pipes are connected It will also learn how the boat reacts on different rudder commands and automatically calibrate itself To learn how
10. abaft the beam will result in a gibe 21 NEXUS AUTOPILOT 5 2 6 Power steering To select power steering press MODE until the page arrow mg db appears under PWR ST and Rudder Angle Indicator RAI is ch 3 HT flashing on the lower line Your present course is displayed on the em top line 54 RHI To activate power steering press SET when RAI is flashing The rudder angle followed by a sign for port or starboard is displayed on the lower line To change the rudder angle to starboard press RIGHT and hold it until the desired rudder angle is displayed To change the rudder angle to port press LEFT and hold it until the desired rudder angle is displayed 5 2 7 Dodging and returning to last automatic steering function To dodge turn off the automatic steering by pressing OFF and dodge manually If you want to re activate the last steering function and value press MODE and SET together within 10 minutes after turning off the automatic steering This function is not available after 10 minutes after Autopilot off or if the Autopilot has been turned off by pressing OFF for more than two seconds 22 AUTOPILOT EXUS 6 Setup 6 1 Setup mode To get the most out of your Nexus product it is important to carefully setup and calibrate your Network The settings are stored in a non volatile memory which means they will remain in memory after you have turned off the power To get an overview of your Network settin
11. ahead and activate the Autopilot and enjoy the Nexus performance 58 AUTOPILOT NEXUS 14 Fine tuning The factory default settings and the APC routine will provide acceptable performance for most boats but each boat has different steering characteristics and some fine tuning may be necessary for optimum performance For individual settings referred to below see the setup section The tests should be performed under fairly calm sea conditions with minimal wind or tide If wind or tide are unavoidable set a course for minimum effects from these causes It is recommended that these sea trials should not be done in restricted or busy waters Step by step instructions how to fine tune the Autopilot 1 Check that Dockside Testing Sea Trials including the APC routine has been done If not go back and make sure they are done 2 Activate the Autopilot on a course and ensure that it holds without excessive understeering or oversteering 3 With the boat travelling in a straight line at its normal cruising speed in calm water activate the Autopilot compass function Make a 40 course change using the LEFT or RIGHT and the boat should not overshoot by more than 3 to 4 Continue making 40 course changes while adjusting the Rudder RUD setting until the boat overshoots the correct course a few times prior to setting on the course This is the optimal RUD setting that can be used on the boat at the current cruising speed and load
12. and instruments Think about leaving space for additional instruments in the future e A few do nots you should consider Do not cut the cables too short Allow extra cable length at the Server so it can be disconnected for inspection without having to disconnect all N attached cables Do not place sealant behind the display The instrument gasket eliminates the need for sealant Do not run cables in the bilge where water can appear Do not run cables close to fluorescent light sources engine or radio transmitting eguipment to avoid electrical disturbances Do not rush take your time A neat installation is easy to do The following material is needed Wire cutters and strippers Small and large Philips and small flat head screw driver Hole saw for the instrument clearance hole 63 mm 212 5 mm A drill for the mounting holes Plastic cable ties If you are doubtful about the installation obtain the services of an experienced technician 11 N AUTOPILOT 2 1 Installing the instrument e Place the adhesive drill template on the desired location for the instrument Drill the 2 holes using a 5 mm drill for the two pin bolts Use a 63 mm 2 2 hole saw to machine the clearance hole for the instrument connection socket Remove the template e Screw the two pinbolts to the instrument e Put the instrument in place e Screw the two nuts from the back Note The two nuts must just
13. be adjusted while the boat is underway with Autopilot functions activated Always be in a position to monitor the boat s heading and to watch for navigational hazards when calibrating the Autopilot Be prepared to turn off the Autopilot by a long press on OFF to revert to manual steering immediately if an undesired heading occurs If navigating with an automatic steering function in a hazardous situation do not adjust setup routines while underway 6 2 Lighting setup group Lit The instrument uses red back lighting for the display and the 4 push buttons The light can be set at 4 different levels of crm brightness Oo Li To select between the 4 light levels LOW MID MAX and Lik OFF OFF press RIGHT To lock the selected level press SET The selected light level will be copied to all Nexus instruments connected to the Network It is not possible to select the lighting level individually for single instruments 6 3 Autopilot setup group P 6 3 1 PO Return RET Em To return to previous mode press SET when the text RET is L HI PO displayed RET 6 3 2 P1 Rudder RUD Possible settings are 0 Minimum to 9 Maximum Set by the APC routine J H The setting affects the degree of rudder angle used L LPI 3 RUD The most critical adjustment for good steering is the rudder Too high a setting will cause excessive amounts of rudder movement which forces the boat to hunt rapidly back and forth across the course
14. be tighten by hand e Run the Nexus Network cable from the Server to the instrument e f you want to cut the Nexus Network cable to length disconnect 4 pole jack plug and cut i the cable Peel off about 35 mm 1 4 of the r cable insulation Remove about 6 mm 1 4 hrama DH from the 3 isolated wires the 4th wire is an OOOO K earth screen Attach the 4 cable protectors to the wires using a pair of flat pliers e Connect the 4 cable protectors to the 4 pole jack plug as shown Apply silicon paste on all Silicon paste locations as shown Note Must be done to avoid corrosion 12 AUTOPILOT NEXUS e Apply silicon paste to the instrument connection pins at the back of the instrument Press the jack plug onto the instrument pins Press the cable in to the cable leads e Mount the connection back cover with the screw 2 1 1 Installing instrument to the Server All NX2 instruments are connected directly to the Nexus Network in a daisy chain They all use the same colour coded 4 pole jack plugs For instrument installation see 2 2 LI Serr OL ouute 5 GREEN JE yet ow 0 7 wine s SCREEN NETWORK NMEA 13 NEXUS AUTOPILOT 3 First start At each power on the instrument will perform a self test The 2 A 404 display will first show all segments then the software version and H H DL s the Nexus Network ID number LI 19000 mmy 3 1 Initialising the instrument in a Nexus Network BBA 8 BBE At t
15. capable of operating either as a Stand Alone Autopilot or as a Network application by connecting it to the Nexus Network Many options are available including GPS and wind transducers Nexus Remote Control instrument and other Nexus digital and analog instruments The Autopilot Servo Unit A 1500 is designed for sailing and power boats from 35 ft 11 m to over 160 ft 50 m depending on drive units used Hydraulic drive units provide precise control with low power consumption Connection can also be made to solenoid valves of electro hydraulic steering systems allowing use on very large boats Hydraulic linear drives provide powerful and accurate control when connected to mechanical steering systems and also provide independent hydraulic steering for added safety The Autopilot Servo Unit A 1510 is designed for sailing and power boats from 26 ft 8 m to over 50 ft 15 m depending on drive units used Hydraulic drive units provide precise control with low power consumption Hydraulic linear drives provide powerful and accurate control when connected to mechanical steering systems and also provide independent hydraulic steering for added safety Power steering through the instrument s push buttons may be used to avoid heavy wheel effort when manoeuvring Alarms for off course off track or watch alarm are included with provision for an optional external alarm buzzer 1 3 Principle of operation Any difference between the set and
16. not succeed to re initialise we suggest you disconnect just pull out the connection plug on all except one of 14 AUTOPILOT NEXUS the instruments that had the same ID number then re install the instruments and repeat the above procedure 15 NEXUS AUTOPILOT 4 Operation 4 1 Instrument overview Top line Page Heading arrow HEADING Function Autopilot on Reference f course Lower line anale function text AUTOPILOT OFF SET LEFT MODE RIGHT 4 1 1 Instrument display The display consists of two lines a top line with 24 mm 1 digits and a lower line with 13 mm 0 5 digits 4 1 2 Instrument pages and functions The Autopilot instrument has its functions divided into 4 pages The page names are printed above the display COMPASS NAV Navigation WIND and PWR ST Power steer The selected function is indicated by the page arrow at top of the display 4 1 3 Instrument modes Standby mode The instrument functions as a passive compass repeater Autopilot mode When any Autopilot function is activated Setup mode It allows calibrating your Network settings Edit mode It allows editing settings when digits are flashing AUTOPILOT N 1 1 4 Instrument power on off You will switch on off your Nexus instruments by using the instrument switch on your electrical panel as the instruments have no separate power on off button 4 2 How to use the push buttons 4 2 1 MODE A press on MODE moves o
17. this auto deviationcheck was too great to be accepted Make a new auto deviation check and if you still get ERR 19 make a new auto deviation since the last one was probably disturbed 6 5 6 C5 Clear auto deviation Auto CLR Fr D brat isi LAL os To clear the calibration created by the auto deviation select C5 E Auto CLR and press SET HubaELLR 30 AUTOPILOT NEXUS 6 5 7 C6 Adjust compass alignment ADJ Possible settings are 000 to 359 Default setting is 000 Compass transducer alignment correction or the so called A fault Allows 180 reversed mounting if needed Never mount the transducer at right angles to the boats fore aft line Make sure that the local magnetic variation is entered before you make the alignment adjustment otherwise you are unable to see the difference between local magnetic variation and alignment error l1 cs r1 in a E cL To check the transducer position sail steer your boat in a straight line towards two visible objects in a line If the actual heading taken from the sea chart is 330 and the compass displays 335 then set the value of 360 5 to 355 31 NEXUS AUTOPILOT 7 Maintenance 7 1 Instrument maintenance e To clean the instrument use only mild soap solution and rinse with water e Do not use detergents or high pressure washing equipment At least once a year check all your connections and apply additional silicon paste at each co
18. 0 Calibrate 10 CAL CALibrate CDI Course Deviation Indicator CE Communaute Europ enne CHK CHecK CLR CLeaR COG Course Over Ground CTS Course To Steer d differential DEV DEViation DGPS Differential GPS dGPS differential GPS DTW Distance To Waypoint E East Edit Edit EEPROM Electroniically Erasable Programmable Read Only Memory EMC Electro Magnetic Compatibility EN European Norm GPS Global Positioning Network HDC HeaDing Compass HDM HeaDing Magnetic HDT HeaDing True HM Heading Magnetic HT Heading True id identity INI INItiation Init Initiation 43 NEXUS AUTOPILOT KT KnoTs KTS KnoTS LCD Liquid Crystal Display LOW LOW m metre m s metres per second MAG Magnetic North MAX MAX MEM MEMory MID MID MIN MINimum MN Magnetic North MOB Man Over Board N North NAV NAVigate NM Nautical Mile NMEA National Marine Electronic Associal OCA Off Course Alarm PCA Pilot Course Alarm PWR PoWeR RAM Random Access Memory RET RETurn RRS RuddeR Speed RUD RUDder S South S A Selective Availability SAT SATellite SEA SEA SEC SEConds SOG Speed Over Ground STR STeeR tru true USR USeR VAR VARiation VER VERsion W West WP WayPoint XTE Cross Track error The boat is left of the desired track 44 AUTOPILOT NEXUS il L1 The boat is right of the desired tracl Apparent wind angle from port Apparent wind angle from starboarc Rudder angle port Rudder angle starboard TATA
19. 4 F to 158 F Warranty period The above products have the same 2 year warranty period see separate conditions CE approval The above products conforms to the EMC requirements for immunity and emission according to EN 5008 1 and EN 55022 9 2 Nexus Network specification The Nexus Network is a high performance non collision multi talker multi receiver data bus specially designed for marine navigation applications The most important features are the high update rate fast response times very low data latency 25ms and very high data security even at long distances Another important feature is that data transfer efficiency will not degrade even when used in large and complex systems It utilises the RS485 standard with up to 32 senders and or receivers to form a Local Area Network Data is transmitted asynchronously with 1 start bit 8 data bits 1 parity bit two stop bits in 9600 baud The link between Nexus Network and your PC application is the PC interface FD Full Duplex NMEA Art No 21248 1 This is supplied with a 9 pole D sub connector on a 1m 3 3 ft cable for the RS232 PC port The PC interface is a useful tool to monitor and log real time data or when editing waypoints to from PC file or to from Nexus Network For users who writes there own software please see our web site where you find the Nexus application notes 9 3 Accessories 9 3 1 Autopilot instrument Additional Autopilot instruments Art No 20445
20. 5 may be added They are connected in a daisy chain fashion from one to the other matching colours on terminals Control may be transferred from one instrument to another by simply pressing any pushbuttons except the OFF push button on the instrument where active control is desired All other inactive instruments will display the same information as the active instrument however in the lower display the text passive will blink once every seven seconds 9 3 2 Nexus Remote Control instrument The Remote Control instrument Art No 21210 is an instrument in itself that can be set in either Autopilot mode to be used as an Autopilot instrument or Instrument mode displaying all information on the Nexus Network Further it can be used as a remote control for all instruments connected to the Network It is the ultimate Nexus instrument 39 NEXUS AUTOPILOT 9 3 3 Nexus analog Rudder Angle instrument The analog Rudder Angle instrument Art No 20550 9 indicates the rudder angle 50 0 50 This instrument is connected on the Nexus data bus cable as per colour codes 9 3 4 Nexus Multi Control instrument with Server The Nexus Server is the heart of the Nexus Network to which transducers for speed depth wind compass and navigators are connected The Multi Control is a Multi function instrument that displays a main and a sub function grouped into 4 pages for speed depth navigation and wind information The Multi Control instrume
21. EV NEXUS AUTOPILOT If successful the text CAL C3 Auto DEV will be displayed If not an error messages can be displayed e Err 15 Make sure an Autopilot function is not activated and carry out the auto deviation procedure again e Err 16 Auto Deviation is not possible because a NMEA compass is selected as compass for the Nexus Network e Err 17 The 1 turn was not performed or the compass is affected by strong magnetic distortion You may interrupt the auto deviation procedure at any time by pressing LEFT and RIGHT together To check the auto deviation carry out the auto deviation check routine 6 5 5 C4 Check auto deviation Auto CHK This function is used to check your auto deviation The result of Auto CHK will be compared with Auto DEV If the rni deviation is less than 1 5 the average value from the comparison L H L r4 between Auto DEV and Auto CHK will be stored Auto CHK Take the boat into a slow turn in calm sea and away from other boats or obstructions There is no need to perform a perfect circle When steady select C4 Auto CHK and press SET to start The present compass heading is displayed and the compass auto deviationcheck is in progress Turn the boat in a 1 74 circle and to end the routine press SET again If successful the text CAL C4 Auto CHK will be displayed If not ERR 17 or ERR 19 will appear i e the difference between the last auto deviation and
22. EV 3 Recheck compass again Ships compass is not correct Compensate ships compass Compass no reading or wrong heading Check that the local magnetic variation C2 VAR is set properly Check the Sea Damping P2 SEA NMEA does not engage NAV arrow does not come on NMEA receiver correctly not installed No NMEA 0183 data received Check receiver settings for proper output Check Nav cable for connection to the correct port arrow does not come good NMEA heading is used Unreliable NMEA data detected Check connections and setup in upon engagement transmitting instrument No active waypoint Activate a waypoint After some use NAV Poor NMEA data detected Last Check for poor navigator installation causing bad signal to noise ration Check on until good data restored for erroneous data as detected by navigator Revert to magnetic course only if situation cannot be corrected Course under NAV May appear when close to Accept situation or revert to compass steering is erratic waypoint due to GPS S A course steering only error Compass heading information is not consistent with navigator 35 Set heading in pilot i e true to true or magnetic to magnetic so course is consistent with navigator Check NMEA wiring termination NEXUS AUTOPILOT 8 3 Nexus Network error messages with cause and remedy If an error message Err is displayed an er
23. PASSION FOR PERFORMANCE Autopilot Instrument Installation and Operation Manual English AUTOPILOT NEXUS AUTOPILOT This manual is written for NX2 Autopilot version 2 01 2 11 Edition March 2007 AUTOPILOT NEXUS 1 Part SpeCifiCatiOn vviicceisescasssssensceccstcivansccsaiecsedsocssesvevetsecyseussataeinceseocdssaisucsesbeysddreansesadieuieesne 6 1 1 Welcomeaboard MED X 8 1 2 Capabilities 212 k 12255 cio i eccL eb det obe pls dele a pok le bobo ard 8 1 3 Principle of operation eite retten eite cetero eee ce cie dates aaae 8 1 4 Comporiefils uote nicer ceo en ce ED n PA HE TELE a ty SEEN AN dide eode oe 9 1 4 1 Autopilot instrument eeeeeeee eene nennen enne nennen nnne nnne nnne nnn 9 1 4 2 Servo Unit A 1500 and A 1510 snesmssssssrssssrssrssssrsssrsrsssraresrerssransssan resan nns r eee 9 1 4 3 Rudder Angle Transmitter enero 9 1 1 1 Compass transducer cce ee rn rere ERECTAE Oh ada ide 9 1 1 2 PUMPSECt RR 10 1 1 3 Linear Drive 10 1 4 4 Solenoid Valve Drive 10 1 5 Registering this product ern rnt nter eene rta rr erras ea deine nna 10 1 6 About this manual irc einer he oon Eee rere deoa Ere ra re nada 10 2 Installation 11 2 1 Installing the instrument 12 2 1 1 Installing instrument to the Server 13 3 First Start iioi esa roris reine re ia Ed
24. Too low a setting lets the boat slowly fall off course with repeated corrections required to get back on course The rudder should be set to the position where positive control of the steered course desired is achieved without undue activity Run the boat at its cruising speed and make a course change of 40 with the push buttons The boat should not overshoot by more than approximately 5 Adjust the rudder until this is achieved 25 NEXUS AUTOPILOT 1 1 5 P2 Damping of compass heading SEA Possible settings are 0 Minimum to 9 Maximum Set by the APC routine n H L e d H This setting is a combination of yaw dead band compass T sensitivity and compass damping The minimum setting may only SE be used under calm sea conditions to avoid unnecessary rudder correction due to compass acceleration errors L Smaller boats and high speed boats which are subject to more acceleration in lighter seas will have to use higher settings Larger and more stable boats can use lower settings since there is less compass disturbance Default setting should work on most boats in light to moderate sea conditions Following seas no matter how rough may require lower settings to catch course error trends quickly in order to minimise excessive yaw 6 3 3 P3 Counter Rudder CRD Possible settings are 0 Minimum to 9 Maximum Set by the APC routine p HI This setting senses the rate of change of heading and giv
25. actual course is compared along with rate of change and trends in change to drive the pumpset motor or solenoid valve The AUTOPILOT NEXUS rudder is moved as necessary to return the boat back on course The sensitivity to course errors andamount of correction are user adjustable to suit different boats under various sea conditions NB PID control terminology as known by control technicians P proportional part integral part and D derived part Factory default settings and automatic calibration establish a basis for normal steering and may be further fine tuned if necessary During set up routines the compass is automatically compensated and installation errors such as reversed rudder feedback and reversed pumpset wiring or piping are automatically diagnosed and corrected During this routine also the rudder speed is automatically optimised This greatly reduces installation set up and sea trials time while eliminating possible Autopilot malfunction 1 4 Components 1 4 1 Autopilot instrument Control and display of all Autopilot functions are provided by the Autopilot instrument It is waterproof and may be mounted below or above deck Multiple Autopilot instruments can be connected and the Autopilot may be activated by pressing the push buttons of any instrument 1 4 2 Servo Unit A 1500 and A 1510 The Servo Unit contains the course computer and pumpset motor drive circuitry and acts as a centre for interconnecting
26. ct power steer function and try to turn the steering wheel In this function the steering wheel should be stiff If you can turn the wheel a certain amount with a increasing pressure as a result there is still air in the system Continue to ventilate the system until the steering wheel is stiff before you proceed with the sea trials Do not attempt to activate the Autopilot in other functions than power steer until all air is out of the system as sloppy course holding will result The very last air removal will be done as the boat is tested underway 56 AUTOPILOT NEXUS When you finished the Dockside Testing perform the Sea Trials routine 13 Sea Trials 13 1 Preparations Take your boat out in half speed to calm sea and away from other boats or obstructions to run the sea trials Then proceed as per below order Warning Do not activate any of the 3 Autopilot functions Compass Nav or Wind at dock as the rudder may go hard over since the APC routine has not been carried out yet 13 2 Compass calibration Enter the compass calibration Note If you are using an existing Nexus Compass transducer that already has been compensated it is not necessary to run the auto deviation Auto DEV procedure again Local Magnetic Variation Run the calibration routine local variation VAR Automatic Compass Compensation Run the calibration procedure auto deviation Auto DEV Automatic Compass Check Run the calibration procedure au
27. d CAPITAL letters e g MODE e Unless otherwise stated the push button presses are momentary e Each time a function is mentioned in the text it will be in brackets and in the same format where possible as displayed e g HDG for HeaDinG e With the word navigator we mean a GPS Loran or Decca instrument e Which instrument is navigating By the term navigating we mean the active instrument in which the waypoint memory is used for navigation to calculate the navigation data i e BTW DTW etc There can only be one instrument on the Nexus Network which is keeping the waypoints in memory but the waypoints can be reached from all instruments Note We have put in a lot of effort in order to make this manual correct and complete However since we have a policy of continuous improvement some information may differ from the product functions If you need further information do not hesitate to contact your national distributor 10 AUTOPILOT NEXUS 2 Installation The installation includes 6 major steps Read the installation and operation manual Plan where to install the transducers and instruments Run the cables Install the transducers and instruments Take a break and admire your installation Learn the functions and calibrate your system OAOE N aS Before you begin drilling think about how you can make the installation as neat and simple as your boat will allow Plan where to position the transducers Server
28. dicator on the Instrument display is consistent with the rudder angle The cable should be connected to Servo Unit terminals marked RFU according to colours indicated The rudder transmitter unit must be securely mounted to a vertical surface and connected by the adjusting tie rod linkage to the tiller maintaining the geometry as detailed in the diagram shown The rudder transmitter arm must always swing in the same plane as the tiller Make sure all fasteners are well tightened and locked For maximum watertight integrity it is recommended that the unit is mounted with its rotary shaft facing downward 11 6 Pumpset For installation and specification see separate manual 11 7 Linear drive For installation and specification see separate manual 53 N AUTOPILOT Figure 1 Typical installation on a boat with mechanical steering including Pumpset PF 0 3S with solenoid EE Mechanical steering Solenoid Pumpset DG VARIAR 0 3 il Solenoid or Ilve block valve J Pipes Pus 54 AUTOPILOT NEXUS 11 8 Solenoid valve controlled pumpset If the boat is already fitted with a hydraulic steering with a solenoid valve controlled pumpset for 12 or 24 VDC connect one solenoid coil to Servo Unit terminal Common and terminal Motor 1 and the other to terminal Common and terminal Motor 2 Make sure that the Servo Unit dip switch solenoid valve change all switches on the DIP
29. ere it is being used In this case valid claims will cover parts only Labour and return postage will be invoiced to the sender at an appropriate rate DISCLAIMER Common sense must be used at all times when navigating and the Manufacturers navigation equipment should only be considered as aids to navigation The Manufacturers policy of continuous improvement may result in changes to product Specification without prior notice 46 AUTOPILOT NEXUS Fileid WARRANTY CARD TO BE RETURNED TO YOUR NATIONAL DISTRIBUTOR OWNER Name Street City Zip Code Country Product name Serial number OOOOOO gt LILILILILIL e Ese Es Es ES TES OOOOO0 A B O O OO O E O O O O 0 f HE FEE ogogo e Date of purchase Date installed Dealers stamp L Tick here if you do not wish to receive news about future products 47 NEXUS AUTOPILOT 11 Installation 11 1 Installation general Reliable and accurate operation of an Autopilot depends more on correct installation than any other piece of marine electronics Please read and fully understand the installation requirements before attempting installation Note If in doubt obtain the services of an experienced Autopilot installation technician e The installation includes 8 major steps Read the installation and operation manual Plan where to install the different parts Make the attachments needed for Pumpset and Cylinder and install them Run t
30. es L EP additional rudder corrections if the boat is rapidly falling off course U CRI and backs off the rudder as a boat approaches the desired heading Its effect is to rapidly catch the tendency to yaw in a quartering sea provide initially high rudder control when making a large course change and to decelerate the swing of the bow as a boat approaches the desired course Course holding with heavy and difficult to steer boats is greatly improved when using this feature Too little counter rudder will allow the boat to overshoot on large course changes Too much will cause unnecessary rudder corrections and a tendency to stop short of coming to a new course requiring several successive corrections before easing up to the new heading To optimise counter rudder initially set it to minimum and adjust the rudder see RUD 5 3 2 Increment the counter rudder one step at a time while testing 40 course changes until the boat achieves an overshoot of 1 to 2 or less Remember that any air in the hydraulic system will prevent precision control 6 3 4 P4 Damping of wind WSE Possible settings are 0 Minimum to 9 Maximum Default setting is 2 R HL pa C SEA 26 AUTOPILOT NEXUS Damping of wind transducer The factory default setting should be adequate In very heavy weather or unstable wind conditions unnecessary corrections may be minimised by increasing the setting 6 3 5 P5 Automatic Trim Calibration
31. esent course is displayed on the top line Caution Before activating NAV steering make sure your present heading corresponds approximately with bearing to waypoint and that the cross track error is less than two NM because the Autopilot TERA will turn the boat towards the track line first and then onto the heading set XTE to starboard To activate NAV steering press SET when NAV is flashing Bearing to waypoint or cross track error to waypoint are now f r I displayed on the lower line to the left To alternate the display mm between bearing and track on the lower line press LEFT or XTE to port RIGHT Caution The NAV function will automatically change course when the next waypoint information is displayed and the helmsman should ensure that there are no boats or other hazards on the new course as the waypoint is changing When using waypoint sequencing in a route list it is extremely important that the helmsman is at the steering position and ready to override the pilot if the course change would cause collision with other boats or objects Set all waypoints in navigators away from navigational hazards by at least 100 metres as the boat may require this radius or more on waypoint advance The Nexus GPS Navigator will allow you to select a route list with automatic sequencing or with a confirming push button press for each waypoint 5 2 5 Automatic steering by wind Automatic steering by wind is only possib
32. f ferrous items close to the compass the auto deviation and auto deviation check routines should be repeated So if you have packed your boat for the vacation think about where you place ferrous items in relation to the compass transducer 6 5 1 CO Return RET To return to previous mode press SET when the text RET is displayed 6 5 2 C1 Magnetic heading MAG Possible settings are OFF and On Default setting is OFF On All headings will be magnetic OFF All headings will be true i e corrected for local variation set in C2 Local variation VAR This is local setting 6 5 3 C2 Local magnetic variation VAR Possible settings are 00 0 99 9 Default setting is 00 0 Easterly variation underlining _ sign Westerly variation minus sign The local magnetic variation is usually printed in the sea chart 6 5 4 C3 Auto deviation Auto DEV This function is used to automatically correct the deviation of your compass Take the boat into a slow turn in calm sea and away from other boats or obstructions There is no need to perform a perfect circle When steady select C3 Auto DEV and press SET to start The present uncorrected compass heading is displayed and the compass auto deviation is in progress Turn the boat in a 1 1 4 circle and when ready press SET again 29 LAL n On KEY LAL RE rui L Akci OFF MAG LAL Lg OGG VAR ro L HL Ci Auto D
33. g P1 RUD control is set too low understeering Fast wander means rudder Decrease Autopilot setting P1 RUD control is set too high oversteering Autopilot wanders on Excess rudder load Reduce rudder friction increase steering all headings cylinder size increase power of the pumpset erratic Rudder angle indicator Rudder transmitter is defective Replace rudder transmitter or is displaying erratic noisy potentiometer within values in terminal strips Check for broken wires in If wiggling of cable where it flexes causes cables rudder activity replace cable Boat overshoots on Rudder control set too high Decrease Autopilot setting P1 RUD large course changes Counter rudder set too low Increase Autopilot setting P3 CRD Symptom Cause Action Course as set onj lf constant error Autopilot Use Compass setting 34 AUTOPILOT NEXUS Autopilot instrument is compass is not aligned with for different from ship s aft line of boat steering compass Variable in caused interference error by heading magnetic Large errors not corrected by above remedies or lack of change in course set point with different headings indicate a defective compass alignment of compass Verify that the steering compass is accurately corrected and then correct the Autopilot compass as per installation instructions 1 Run Auto Deviation Clear C5 CLR 2 Run Auto Deviation C3 D
34. gs we recommend that you note your settings 6 1 1 The setup mode is divided into 4 setup groups Lit OFF Lighting setup group PO P9 Pilot setup group A0 A4 Alarm setup group C0 C6 Compass setup group 6 1 2 How to access setup mode To access setup mode press and hold MODE more than 2 seconds To move to next setup group press MODE To scroll up and down in each group press LEFT or RIGHT 6 1 3 How to change a setting To unlock a setting press SET To change a setting press LEFT RIGHT and MODE as required To lock a setting press SET 6 1 4 How to return to previous mode To return to previous mode press SET when the text return RET is displayed 6 1 5 Factory default settings After each setting we have listed the factory default settings This allows you to manually get back to factory default settings if needed There is no automatic way to get back to factory default settings it has to be done manually All Autopilot instrument settings are central and affect all connected Autopilot instruments and their commands Note The APC routine automatically sets these settings RUD SEA CRD ATC and RRS Therefore these settings and their minimum and maximum values and times depend on how your boat behaves 23 NEXUS AUTOPILOT Note The above explanation is only mentioned here It is not repeated for each setup 24 AUTOPILOT NEXUS Caution All setup routines can
35. he cables Install the transducers and instruments Take a break and admire your installation Learn the functions and calibrate your systems Make the Dockside Testing before the Sea Trials 0 X Y Bc CO NE Before you begin drilling think about how you can make the installation as neat and simple as your boat will allow Plan where to position the transducer and the instrument Think about leaving space for additional instruments to be fitted in the future A few do nots you should consider e Do not cut the cables too short Allow extra cable length at the instrument so it can be disconnected for inspection without having to disconnect all attached cables e Do not place sealant behind the instrument The gasket eliminates the need for sealant e Do not run cables in the bilge where water may accumulate e Do not run cables close to fluorescent light sources engine or radio transmitting equipment in order to avoid possible electrical disturbances e Do not rush take your time A neat installation is easy to do The following material is needed Wire cutters and strippers A pair of flat pliers Small and large Philips and flat head screw driver Hole saw for the instrument clearance hole 50 mm 2 Drill for the mounting holes 2 8 mm 0 11 for the instrument Cable ties 48 AUTOPILOT NEXUS Additional parts for installation All parts needed for installation are included for the Autopilot instrument and compass
36. he first power on after installation you will be asked to press SET PrSKEY This will give the instrument a logical ID number from 16 and upwards on the Nexus Network To initialise the instrument press SET one instrument at a time Pr E 5 KEF on all installed digital instruments Warning Always wait for the text Init OK to be displayed before you press SET on the next instrument n The Nexus Servo Unit or the Server automatically gives the first unit ID number 16 then 17 and so on The order in which you press SET will be the same order as the instruments will be given a logical ID number on the Nexus Network and the same order they will be addressed by the Remote Control instrument if used IN as Dn z3 1 The example shows that the instrument version number is 1 6 and the logical ID number given is 17 Warning Do not activate any Autopilot functions until Dockside N Testing and Sea Trials APC routine have been performed 3 2 Re initialising the instrument If two instruments have been given the same ID number by mistake you must re initialise the instruments to avoid Network disturbance and blockage of data To re initialise the instrument be prepared to press CLR during the short power up sequence i e when version and ID numbers are displayed The display test is then re started on all instruments and you will be asked to press SET on one instrument at the time as explained above Note If you do
37. in calm waters 4 Continue making 40 course changes while slowly increasing the Counter Rudder CRD setting until the boat settles onto course with only one overshoot of 2 to 3 or less On some boats the RUD setting may have to be decreased by one position to get the boat to control properly The RUD and CRD settings are set to the maximum combined settings that should be used on the boat at that speed and under the existing sea conditions The RUD and CRD settings may need to be increased in rough weather The higher the CRD setting relative to the RUD setting for calm weather the less it will need to be increased in rough weather As the boat s speed decreases the rudder becomes less effective The RUD and CRD settings may need to be increased as the speed decreases The higher the CRD setting relative to the RUD setting the less it will need to be increased at lower speeds 59 NEXUS AUTOPILOT To find the optimal RUD and CRD settings at different boat speeds or when the boat is towing follow the procedures outlined in 3 and 4 above Make a record of the different settings needed to control the boat at all typical speeds loads and weather conditions normally experienced Due to the wide dynamic control range and self tuning features of the microprocessor control settings determined for cruising speed in calm seas may be found acceptable without further change at slower speeds and in heavier sea
38. indicates the selected page To activate the selected steering function press SET when the lower line text is flashing The reversed lit text AUTO to the right and in the middle on the display always confirms that an automatic steering function is AU TO activated The function text at lower line to the right confirms which steering function is activated ex HDG for compass steering Note If a page is not available such as when no waypoint information is programmed activated or no navigator or wind transducer connected the page arrow will not stop at that page 5 2 2 Turn off automatic steering To turn off automatic steering press OFF To turn off the Autopilot when you are in the process of changing functions or are in setup mode press OFF 5 2 3 Automatic steering by compass To select compass steering press SET The present heading now becomes the reference course and is ry displayed on the lower line to the left C D H HT To change the reference course to port press LEFT 26 4D HTE To change the reference course to starboard press RIGHT ZB A short press changes the course by 1 a long press by 10 19 NEXUS AUTOPILOT 5 2 4 Automatic steering by navigator Automatic steering by navigator is only possible if a navigator is connected and it is navigating towards a waypoint To select steering by navigator press MODE until the page arrow appears under NAV and NAV is flashing on the lower line Your pr
39. ipment Since all wiring originates at the Servo Unit it should be centrally located to minimise lengths of wiring It is most important to minimise the runs of power and motor leads since voltage drop in these cables will reduce steering capacity 11 4 2 Installing Servo Unit To mount the Servo Unit remove its cover screws The 4 inner mounting holes are now exposed Mount the Servo Unit with 4 screws not supplied 49 NEXUS AUTOPILOT 11 4 3 Connecting Servo Unit Servo Unit connections should be according to below drawing Note If any waterproof cable glands do not have cables inserted install the short rubber plug provided in order to maintain water tightness If many options are connected and not enough glands are available use a separate junction box and route the excess wires through one large cable in one of the large glands Note Autopilot instrument Nexus Network connection If you want to run the Nexus Network instruments separate from the Autopilot do not connect green wire to pin 1 to the left in Servo Unit Instead insulate the green wire A 1510 Pumpset sol VR VR VR enoid DIP Rudder gt 134 TKS angle s I Instrument Compass 12 24V DIP Rudder angle transmitter L Safty swich Pumpset Jog attery DIP switches 12 24V DIP Right position 12V Left position 24V Pumpset Solenoid DIP Down position Pumpset or integrated linear d
40. le if the Autopilot is o connected to a Nexus Network with a wind transducer connected c h 4 WIND HT 45 FAN 20 AUTOPILOT NEXUS Note The apparent wind speed must be more than 3 knots If the apparent wind speed falls below 3 knots wind signals are disabled and the Autopilot will maintain the current magnetic heading reference instead Before activating wind steering optimise your sail trim To select wind steering press MODE until the page arrow appears under WIND and Apparent Wind Angle AWA is flashing on the lower line Your present course is displayed on the top line To activate wind steering press SET when AWA is flashing The present AWA now becomes the reference angle and is displayed on the lower line to the left followed by a sign to describe r wind from port or starboard Starboard To steer to port press LEFT To steer to starboard press RIGHT A short press changes the value by 1 a long press by 10 4 When making large changes of over 30 it may take about 1 Port minute for an accurate course to be re established due to changes in boat balance which must be recognised by the automatic trim function To tack press RIGHT and LEFT together and the boat will come about the same apparent wind angle on the opposite tack Tack angles greater than 80 off the wind are not recommended due to the possibility of an accidental gibe Warning Pressing for a tack when the wind is
41. ne page to the right indicated by the page arrow at top of the display In edit mode a press on MODE moves the cursor one step to the right It scrolls in a circular pattern one step for every press 4 2 2 LEFT When the Autopilot is activated a short press on LEFT decreases the course by 1 a long press decreases the course by 10 In setup mode a press on LEFT moves to the previous setup function In edit mode a press on LEFT decreases a digit by one 4 2 3 RIGHT When the Autopilot is activated a short press on RIGHT increases the course by 1 a long press increases the course by 10 In setup mode a press on RIGHT moves to the next setup function In edit mode a press on RIGHT increases a digit by one 4 2 4 SET A press on SET activates the Autopilot in selected steering function In setup mode a press on SET unlocks a digit to access edit mode When unlocked the digits are active flashes and can be edited by pressing LEFT RIGHT and MODE as required When finished editing lock the digit by another press on SET 4 25 OFF A press on OFF turns the Autopilot 4 2 6 Tack A press on LEFT and RIGHT together performs a Tack when amp steering in wind mode oo QO 17 AUTOPILOT 4 2 7 Setup mode To access setup mode press and hold MODE more than 2 seconds Lit OFF flashes To move to next setup group press MODE again To return to standby mode press SET when the text return RET is g
42. nnection point e When the instrument is not in use always fit the instrument cover for protection e Storing of instruments when not in use for longer periods It is advisable to remove the instruments and transducers and store them inside the boat or at home preferably at room temperature 7 2 Drive unit maintenance and inspection schedule If the boat does not accumulate below hours within 3 months the frequency is every 3 rd month Warning Failure to rectify any faulty conditions discovered as a result of the inspection could cause sudden loss of Autopilot control with consequential danger It is recommended that all items referenced in the following table be inspected before commencing any cruise nume m lee m frequency Hydraulic Contamination replace the oil 1000 hrs Leaks amp Corrosion Leaks amp Loosening Tighten on pumpset Mechanical Linear drive TCorrosion ReplaceorRepair 2000hrs Loosening Tighten 500 hrs on linear drive Loosening Tighten 500 hrs on linear drive Loosening Tighten 500 hrs 32 AUTOPILOT NEXUS 8 Fault finding 8 1 General Before you contact your Nexus dealer and to assist your dealer to give you a better service please check the following points and make a list of e All connected instrument and transducers including their software versions e Nexus Network ID numbers for each instrument displayed at power up In most cases the reason for faults in electronic equipme
43. nsducer 35 8m cable 20860 Compass transducer 45 8m cable 20721 Wind transducer 25m cable mast bracket 20721 1 CF wind transducer Carbon Fibre 1260mm long 380g no mast cable incl 20594 Nexus mast cable 25m 21721 MTC Mast Twist Compensation box 8m cable for Wind Data instr 69980 MRC Mast Rotation Sensor Compensation box 21970 GPS Antenna with NMEA 0183 output 40 AUTOPILOT NEXUS 21735 Bracket for GPS Antenna and 35 Compass transducer for bulkhead mount NX2 Digital Instruments all supplied with 0 2m cable 22117 1 Speed log instrument 22117 3 Multi Control instrument 22117 4 Wind Data instrument 22117 5 Compass Data instrument 22117 6 GPS Navigator instrument 22117 7 Autopilot instrument NX2 Analog Instruments all supplied with 0 2m cable 22115 01 NX2 Analog Wind Angle 22115 02 NX2 Analog Steer Pilot 22115 03 NX2 Analog Speed Trim 22115 05 NX2 Analog Speed 0 16kts 22115 06 NX2 Analog Speed 0 50kts 22115 07 NX2 Analog Depth 0 200m 22115 08 NX2 Analog Depth 0 600ft 22115 09 NX2 Analog Rudder angle 22115 10 NX2 Analog Compass 22115 11 NX2 Analog GPS Speed 0 16kts 22115 12 NX2 Analog GPS Speed 0 50kts 22115 13 NX2 Analog GPS Course Nexus Remote Control Instrument 21210 Remote Control Instrument RCI with Autopilot control 5m cable bracket 21218 1 Bracket Remote Control instrument 20966 Connector 4 pole NEW model Allows cable cable connection 41 NEXUS AUTOPILOT Nexus Multi XL 21680 1 Multi XL in
44. nt and the Server are the building components of the Nexus Network 9 3 5 External alarm buzzer An external alarm buzzer Art No 20081 can be connected to the Server only The buzzer can be positioned where may be heard such as in the Captain s cabin when any alarm is activated 9 3 6 NFU jog lever Non follow up NFU jog or time dependent lever power steering may be connected through the Autopilot Servo Unit to directly control the steering pumpset in any Autopilot function This is useful for docking or remote manoeuvring such as required when picking up crab traps etc In any Autopilot function the jog steering can be used as a dodge function and when the jog lever is let go the boat will revert to the previous course set by the Autopilot 9 3 7 Other NX2 Accessories Below find a selection of optional accessories available Please contact your local NX2 dealer for more information NX2 Completes 22118 3 Multi Control instrument and Server 8m cable 22118 2 Multi Control and Server with Speed Log and depth transducer 8m cable 22118 1 Speed log with log transducer 8m cable 22118 4 Wind Data with transducer 25m cable mast bracket 22118 5 Compass Data with transducer 35 8 m cable 22118 6 GPS Navigator with GPS Antenna 8 10m cable NX2 Nexus Transducers 22120 1 Server compl with 3m power cables 20707 Log Temp transducer 8 m cable for Nexus and Star 19915 8 Depth transducer 8m cable for NX2 only 21731 Compass tra
45. nt is poor installation Therefore always first check that e Installation and connection is made per instructions for instruments and transducers Screw terminals are carefully tightened No corrosion on any connection points No loose ends in the wires causing short cuts to adjacent wires Cables for damage and that none are squeezed or worn Battery voltage is sufficient should be at least 11 V DC The fuse is not blown and that the circuit breaker has not opened The fuse is of the right type Two instruments do not have the same ID number 8 2 Symptom Cause Action In the table below causes marked are more likely to occur during installation or when rewiring has taken place Symptom Cause Action O minimum terminals at Servo Unit turn on applied terminals at Servo Unit Make sure and is applied to correct reversed terminals is open located in the Servo Unit Autopilot turns on Slow blow high Replace fuse If fuse regularly blows but the pumpset current fuse in check for excessive rudder load or does not run Servo Unit is blown mechanical defects in steering system Pumpset drive Replace transistors integrated circuits section in Servo Unit or entire circuit board may have failed to open Pumpset motor turns Broken or loose motor Replace or tighten coupling as necessary but the rudder does not coupling move 33 NEXUS AUTOPILOT Pumpset con
46. pset motor stops A variable speed motor drive adjusts optimal rudder speed and provides for minimum power consumption and maximising of rudder positioning accuracy 1 1 3 Linear Drive A hydraulic linear drive is used to drive the tiller arm or quadrant of mechanical steering Systems The linear drive is driven by a pumpset The linear drive provides a cleaner installation being entirely below deck and delivers more torque to the rudder than wheel driven units In case the mechanical steering should fail the linear drive will provide a back up hydraulic steering 1 4 4 Solenoid Valve Drive On larger boats the main hydraulic steering may be fitted with solenoid valve controlled power steering In this case the Autopilot does not need to be supplied with a pumpset since the Nexus Servo Unit output can be reconfigured with its board mounted DIP switch to provide drive for steering solenoids or relays having coil voltages of 12 or 24 VDC 1 5 Registering this product Please take time to fill in the warranty cards and return them to your national distributor By returning the warranty card it will assist your expert distributor to give you prompt attention Keep your proof of purchase Also your details are added to our customer database so that you automatically receive new product catalogues when they are released 1 6 About this manual e Each time a push button is referred to in this manual the push button name will appear in bold an
47. rive Up position Relay or solenoid system 50 AUTOPILOT N A 1500 qi Yd VR2 VR4 COMPASS BYPASS BUS R NMEA RAI JOG c BATTERY BATTERY COMMON MOTOR I V MOTOR 2 A Z Z On Ot t O ADA 15 ACK G WHITE DATA GND DATA WALARMT N W m N YELLOW F WHITE gt YELLOW SCREN v GREEN WHITE t SCREEN e RED BI m a INSTRUMENT RENI PX JOG STEERING 2359 HG k T eem 2 skola P gt SAFETY SWITCH OR RELAY COMPASS RUDDER ANGLE TRANSDUCERTRANSMITTER PUMPSET NEXUS SERVER BATTER 51 NEXUS AUTOPILOT 11 4 4 Safety switch Important An external safety switch or circuit breaker relay not supplied should be installed in line with power input Make sure it is rated greater than or equal to 25 Amps This switch will serve as your Autopilot ultimate safety OFF switch 11 4 5 Dip switches The main circuit board has 2 dip switches which must be pre set during installation to suit the installed configuration Important With power turned off to the system do the following a Locate dip switch for 12 or 24 32 VDC voltage and make sure it is set to the voltage supply connected Right position for 12V and Left position for 24V b Locate dip switch for solenoid valve or pumpset and make sure it is set to the type of drive you have installed Down position for pumpset or integrated linear dri
48. ror has been detected by the Nexus Network The message can assist you to diagnose the cause and remedy the error To escape from an error message press any push button If not possible to escape reset power turn off and on again then make the remedy if suggested below Note For errors marked with contact your national distributor to return the unit for rectification No Message and cause Remedy ji Activated watchdog timeout Nexus Network data frames are missing Check connections and setup No data received within approx 10 sec Check connections EEPROM write Auto log full in GPS Compass Clear Auto log memory EEPROM read RAM memory error Reset power d EEPROM auto initiation or NMEA transmit fail Nexus Server only Range error depending on wrong input e g 17 70 too many minutes can not be executed settings external NMEA navigator mode Auto deviation is not possible Check for extreme magnetic field upside down mounting of transducer or wrong transducer type setting 1 turn not completed or extreme magnetic disturbance Auto deviation Function denied Function denied since compass is busy with the auto deviation routine Auto deviation failure Error larger than 1 5 The boat probably hit a wave during the turn GPS acquisition failure time out Maximum allowed time for searching satellites E g when try to navigate indoors Check GPS antenna location 22
49. s 5 The compass damping SEA setting is a combination of yaw dead band compass sensitivity and compass damping The minimum setting may only be used under calm sea conditions to avoid unnecessary rudder correction due to compass acceleration errors Smaller boats and high speed boats which are subject to more acceleration in lighter seas will have to use higher settings Larger and more stable boats can use lower settings since there is less compass disturbance Factory default setting should work on most boats in light to moderate sea conditions Following seas no matter how rough may require lower settings to catch course error trends quickly in order to minimise excessive yaw and steering activity 6 Automatic Trim Calibration ATC adjustment is not critical It constantly compares the course set against the course steered The automatic trim slowly applies more rudder as necessary to reduce any persistant errors to zero Such errors may exist due to wind waves or other unbalanced forces such as single screw operation of a twin screw boat an off centre tow or weather helm on a sailing boat If the trim time is set too high it will take a long time to eliminate the course error If it is set too low it can start to degrade course stability In general longer trim times higher settings should be set for large boats and sailing boats and shorter trim times lower settings for small boats and high speed planning boats The factor
50. s Eo 14 3 1 Initialising the instrument in a Nexus Network 14 3 2 Re initialising the instrument csccsccssecessseesscescesseesseeossentseseseeseeesseesteesoseteneesseeees 14 4 Operati m e 16 4 1 Instrument overview 16 4 1 1 Instrument display 16 4 1 2 Instrument pages and functions 16 4 1 8 Instrument modes 16 1 1 4 Instrument power on off d 4 2 How to use the push buttONS s ssessesrssssorsssssorsssssrrissssarrrsrnassrssnesresn re kein ni ing 17 4 2 1 MODE X AI M Er 17 4 2 2 LEFT 17 4 2 3 RIGHT 17 4 2 4 SET ax 4 2 5 OFF xd 4 2 6 Tack a 4 2 7 Setup mode 18 4 2 8 Lighting 18 5 Function 19 5 1 Standby mode 19 5 2 Autopilot mode ett tnter rne edente ti Ai iiia 19 5 2 1 Activate automatic steering ssessssseeeseeeneeeereennenrennren nennen 19 5 2 2 Turn off automatic steering 19 5 2 3 Automatic steering by compass 19 5 2 4 Automatic steering by navigator 20 5 2 5 Automatic steering by wind 20 5 2 6 Power steering rrt eret rene nn 22 5 2 7 Dodging and returning to last automatic steering function 22 LANB CD rec SSR AE 23 6 1 Setup mode
51. s more than the PCA setting the alarm will sound and the display will blink 6 4 8 A2 Timer watch alarm TMR Possible settings are OFF or On Default setting is OFF On audible alarm activated The audible alarm will sound every 5 minutes to alert the person on watch To confirm and restart the timer press any push button If not confirmed within 1 minute the optional external alarm buzzer if connected to the Nexus Server will sound for 1 minute to alert the rest of the crew C m zn Fr ra a m d o c3 F a IJ 7 3 20 ru m 6 4 4 A3 Cross Track Error alarm XTA rni Possible settings are 0 00 OFF to 9 99 Default setting is L HL R3 0 00 qgg tA LILLILI This function is only available in NAV function when the Autopilot is connected to a Nexus Network and a navigator is connected to the Nexus Server 28 AUTOPILOT NEXUS If the pilot s cross track error exceeds the set threshold of distance of the track the alarm will be activated 6 4 5 A4 Push button beep KEY Possible settings are OFF or On Default setting is ON On Sound when push buttons are pressed OFF No sound 6 5 Compass setup group C Auto deviation auto deviation check and auto deviation clear are only available if a Nexus compass transducer is connected The auto deviation routine will automatically correct all possible faults except alignment Note As soon as you place any kind o
52. s polarity protected 0 08 W At max lighting 0 8 W 7 mA at 12V At max lighting 70 mA at 12V 9 1 2 Servo Unit A 1500 Dimensions Weight Enclosure Cable Power supply Power consumption Current consumption Max motor output drive Output 220 x 145 x 55 mm 8 7 x 5 7 x 2 2 800 g 28 2 oz Splash proof 8m 26ft Nexus cable 12 or 24 V DC 10 40 V 4 W plus drive unit demand 0 3A at 12V 25A NMEA 0183 compass RAI 9 4 3 Servo Unit A 1510 Dimensions Weight Enclosure Cable Power supply Power consumption Current consumption Max motor output drive Output 160 x 110 x 38 mm 8 7 x 5 7 x 2 2 420 g 14 8 oz Splash proof 8m 26ft Nexus cable 12 or 24 V DC 10 30 V 3 W plus drive unit demand 0 3A at 12V 15A NMEA 0183 compass RAI 9 1 4 Rudder Angle Transmitter Dimensions Transmitter arm Ball joint linkage arm Weight Enclosure Cable Power supply Power consumption Current consumption Rudder angle Resistance Life 70 x 70 x 75 mm 2 7 x 2 7 x 3 0 120mm 4 7 long 2 arms each 320mm 12 6 long 170 g 6 oz without cable and linkage arm Water proof 15m 50ft 3 lead From Servo Unit 2 5mW 0 5mA 55 10ko 50 million cycles dither 38 AUTOPILOT NEXUS Temperature range The above products have the same temperature range Storage 30 C to 80 C 22 F to 176 F Operation 10 C to 70 C 1
53. stem s ssscsesssessserssssstresessrsssnerrsnssnr rss kne ker eee eee Knee nn 56 13 CLERICI 13 1 Preparations 13 2 Compass calibration pas 13 3 Automatic Pilot Calibration APC eese 57 14 du TUNING pe 59 NEXUS AUTOPILOT 1 Part specification Items delivered with the instrument NX2 Autopilot instrument Instrument cover Cable protectors 0 25 mm 0 1 inch Cable protectors 0 75 mm 0 3 inch Instrument mounting screws Rubber caps for screws Connection back cover 4 pole jack plug Silicon paste tube Plastic cable strap Adhesive drill template for instrument Nexus Network cable 8 m 26 ft Quick guide laminated 1 Inter connection cable 0 3 m 1 ft Installation and Operating manual 11 Warranty card 12 National distributor list 13 O O O DUO O L AAGUGa COMNNNNNN OOOA Registering this product Once you have checked that you have all the listed parts please take time to fill in the warranty document and return it to your national distributor By returning the warranty card it will assist your distributor to give you prompt and expert attention Keep your proof of purchase Also your details are added to our customer database so that you automatically receive new product catalogues when they are released Warranty conditions see 16 AUTOPILOT Y TEMPLATE SCHABLONE E GABARIT DE PERCAGE MONTERINGSMALL SILVA
54. strument 4m cable RCI or Multi Center needed to control Multi XL 21684 1 Multi XL Set Multi XL instrument and Remote Control instrument 69995 Mast bracket XL in aluminium for Multi XL and Nexus Star 110x110mm instr NX2 GPS 22118 6 GPS Navigator with GPS Antenna 8 10m cable 22117 6 GPS Navigator instrument 21970 GPS Antenna with NMEA 0183 output 20992 2 Bracket GPS Antenna plastic with female thread 1 x 14 tpi 21735 Bracket for GPS Antenna and 35 Compass transducer for bulkhead mount Nexus Autopilot components 22117 7 Autopilot instrument 21210 Remote Control instrument with Autopilot control 5m cable bracket 22115 09 NX2 Analog Rudder angle 21035 2 Servo Unit A 1510 8m cable 20860 Compass transducer 45 8m cable 21731 Compass transducer 35 8m cable 21036 Rudder Angle Transmitter RFU 25 15m cable ball joint linkage 230mm x 2 69981 Linear Rudder Angle Transmitter 21134 Pumpset PF 0 3 12V 21134 24 Pumpset PF 0 3 24V 21341 Pumpset PF 0 3S 12V with solenoid 21341 24 Pumpset PF 0 3S 24V with solenoid 21136 Linear Drive AN 23 stroke 229mm peak thrust 680kg 69991 12 Integrated Linear Drive HP 40 stroke 254mm peak thrust 500kg 42 AUTOPILOT NEXUS 9 4 Abbreviations Abbr Description ADJ ADJust ALM ALarM APC Automatic Pilot Calibration ATC Automatic Trim Control AWA Apparent Wind Angle BAT BATtery BOD Bearing Original Destination BRG BeaRinG BSP Boat SPeed BTW Bearing To Waypoint C1
55. t 2sec displayed 4 2 8 Lighting The instrument uses red back lighting for the display and the 4 o push buttons The light can be set at 4 different levels c Lr To access the light control press and hold MODE for more than 2 oO seconds The flashing text Lit OFF will be displayed and the E OFF display will be lit momentarily To select between the 4 light levels LOW MID MAX and OFF press RIGHT To lock the selected level press SET The selected light level will be copied to all Nexus instruments connected to the Network It is not possible to reduce or turn off the lighting on an individual instrument 18 AUTOPILOT NEXUS 5 Function 5 1 Standby mode At power on the Autopilot starts is in standby mode and operates as I oO a passive compass repeater No page arrow is shown at the top of _ the display Oo l HT The current course is displayed on the top line o 5 The rudder angle is displayed on the bottom line 5 4 RHI In any function the top line displays the heading at all times 5 2 Autopilot mode Prior to activating any automatic steering function the boat should be steadied on the desired heading and on track for 5 to 10 seconds to minimise large course changes when activated The Autopilot operates with course errors up to 90 and cross track errors of max 2 NM 5 2 1 Activate automatic steering To select a steering function press MODE The page arrow at top of the display
56. tamination Clean or replace pumpset Symptom Cause Action o O Blinking Low Bat on Low battery voltage Automatic Turn Autopilot off and charge batteries or bottom line of display shut off in case of voltage lower correct voltage loss When proper voltage than 10 5 V 12 V battery and restores restart Autopilot 21 5 V 24 V battery Check for voltage drop and repair Power wiring is undersized Replace wiring with correct diameter wire When Autopilot APC routine not performed Perform APC routine engaged rudder goes harddover may be shorted disconnected instructions shorted or open circuit Autopilot wanders on Magnetic interference is Perform Auto Deviation Clear CLR and some headings present The worst steering is Auto Deviation DEV again or try another usually on northerly headings in compass location Investigate for the northern hemisphere and magnetic disturbances around compass southerly headings in the e g masses of steel motors southern hemisphere loudspeakers etc Autopilot wanders on Severe magnetic interference Choose another compass location all headings Air in hydraulics Fill and purge the steering system Slack in the steering system Repair any loose or worn parts Rudder transmitter Replace rudder potentiometer potentiometer is noisy or intermittent intermittent wiring connection and connect wiring Slow wander means rudder Increase Autopilot settin
57. the test procedure Warning Do not activate any of the 3 Autopilot functions Compass Nav or Wind at dock as the rudder may go hard over since the APC routine has not been carried out yet It will be done as explained in Sea Trials 12 2 Dockside First Start Run the procedure as described in First Start 12 3 How to remove air from system Select PWR ST function by pressing MODE until the page arrow appears under PWR ST To activate the Autopilot press SET Press and hold LEFT or RIGHT until the pumpset begin to run and the rudder moves If port rudder is given when you press starboard RIGHT push button and vice versa ignore the reversal It will be corrected automatically when doing the APC routine at Sea Trials It may take time before the steering begins to move due to air in the system Continue to press and hold the push button until the steering reaches its stops Then reverse direction with the opposite push button Repeat this procedure 10 times or more until the system appears to move smoothly After 5 or 10 minutes of this purging let the system rest so that entrained air can settle out of the oil After 5 minutes of rest repeat the above procedure Air in the system may cause noisy pumpset operation When the pumpset becomes quieter and the steering moves smoothly and the linear drive responds instantly in both directions it may be assumed that most air is out of the system To check that all air is removed sele
58. to deviation check Auto CHK Misalignment correction Run the calibration procedure compass alignment ADJ 13 3 Automatic Pilot Calibration APC The Autopilot will not function unless the boat pass the APC routine The APC will automatically determine and correct how wires and pipes are connected It will also learn how the boat reacts on different rudder commands and automatically calibrate itself The APC routine automatically sets RUD SEA CRD ATC and RRS Select P7 APC To unlock press SET To change to On press LEFT or RIGHT To activate the APC press SET All 4 page arrows at top of display will now be lit to confirm the APC procedure is in action The boat should automatically turn slightly to port and starboard and return to original course If the APC fails Error message 34 calibration failure is displayed This is most likely caused by too much air still in the system To escape the error message press any push button Revert to 10 3 How to remove air from the system Note You can help the APC process by manually pulling the steering wheel or tiller in same direction as APC turns the boat to pass the APC 57 NEXUS AUTOPILOT If the APC is successful All 4 page arrows disappear the instrument leaves the setup mode and returns to standby mode automatically Note You may interrupt the APC routine at any time by a press on SET Congratulations your Autopilot calibration is done Now go
59. to perform the APC function see Sea Trials 6 3 8 P8 Rudder Reduction Speed RRS Possible settings are 0 Minimum to 9 Maximum r Set by the APC routine L H L PB The RRS controls the flow of the pumpset It will effect the 5 RRS pumpset but not a solenoid valve steering system 27 NEXUS AUTOPILOT The RRS will be set to 5 after the APC routine is performed It is then possible to increase or decrease the speed reduction of the pumpset motor 6 3 9 P9 Rudder angle limit LIM Possible settings are 0 997 Default setting is 007 rq An angle of 00 is the same as rudder angle limit disconnected OFF q Note Make sure LIM is set to 00 OFF during installation aie H I 3 4 A The rudder angle limit sets maximum angle for the rudder If the limit is set to 45 it is not possible to exceed a rudder angle 45 on either port or starboard Check the maximum rudder angle by turning the steering wheel to port and starboard and read the maximum angle If the angle is greater on one side decrease the smallest angle by 3 and enter that setting as the limit 6 4 Alarm setup group A To silence an alarm press any push button rq 2 C A8 6 4 1 A0 Return RET RE To return to previous mode press SET when the text RET is displayed 6 4 2 A1 Pilot Course Alarm PCA Possible settings are OFF and 00 99 Default setting is OFF When the boats average course differ
60. using to conditions resulting from improper use external causes including service or modifications not performed by the Manufacturer or by its national distributors or operation outside the environmental parameters specified for the Product The Manufacturer will not compensate for consequential damage caused directly or indirectly by the malfunction of its equipment The Manufacturer is not liable for any personal damage caused as a consequence of using its equipment The Manufacturer its national distributors or dealers are not liable for charges arising from sea trials installation surveys or visits to the boat to attend to the equipment whether under warranty or not The right is reserved to charge for such services at an appropriate rate The Manufacturer reserves the right to replace any products returned for repair within the warranty period with the nearest equivalent if repair within a reasonable time period should not be possible e The terms and conditions of the warranty as described do not affect your statutory rights CLAIMS PROCEDURE Equipment should be returned to the national distributor or one of its appointed dealers in the country where it was originally purchased Valid claims will then be serviced and returned to the sender free of charge Alternatively if the equipment is being used away from the country of purchase it may be returned to the national distributor or one of its appointed dealers in the country wh
61. ve and up position for Relay or Solenoid systems 11 4 6 Trim potentiometers If a non Nexus brand rudder angle indicator is fitted it can be calibrated with the 2 trim potentiometers as indicated on drawing Adjust VR3 labelled offset for rudder centre and VR2 labelled gain for maximum deflection Note This is just to calibrate any non Nexus rudder angle instrument The Nexus instruments must be calibrated by changing the rudder angle transmitter arm length 11 4 7 NMEA connections NMEA input from GPS Navigators etc can be connected to Servo Unit terminals 12 data and 13 ground For NMEA input the overall shield should be terminated at the external unit and not at the Servo Unit NMEA output from Compass transducer can be taken from Servo Unit terminals 14 data and 15 ground For NMEA output the overall shield should be terminated at the Servo Unit and not at the external unit 52 AUTOPILOT NEXUS 11 5 Rudder angle transmitter The rudder angle transmitter should be mounted close to the rudder stock and driven by its ball joint linkage according to the drawing shown below The linkage should be linear such that 35 of rudder movement drives the arm 35 Steering tiller y Y Small errors will not affect Autopilot operation but will cause inaccurate indication on the rudder angle indicator If possible the linkage on the rudder transmitter should be adjusted so that the digital rudder angle in
62. wiring It is splash proof and should be located centrally to minimise lengths of wiring The powerful microprocessor in the Servo Unit accepts heading information direct from an electronic compass or gyro compass A 1500 only wind transducer navigators and compares this against the course set by the instrument and rudder 1 4 3 Rudder Angle Transmitter The Rudder Angle Transmitter provides the Autopilot with accurate rudder position information It is mounted near the rudder shaft and connected to the tiller arm or quadrant with an adjustable ball joint linkage 1 1 1 Compass transducer No Autopilot can steer better than the compass stability will allow The Nexus compass excels in this characteristic where the liquid dampening provides for stability even at high speeds in heavy seas The high gimbaling angle eliminates compass disturbance with boat heeling or rolling The compass provides a stable heading reference for the Autopilot and should be bulkhead mounted below deck near the centre of pitch and roll for maximum stability Construction is splash proof The Autopilot Servo Unit or the Nexus Server can re transmit the compass heading on the NMEA output port to receivers such as radars plotters compass repeaters etc NEXUS AUTOPILOT 1 1 2 Pumpset Various sizes and types of pumpsets can be mounted into a hydraulic steering system The pumpset only operates when carrying out a rudder command When the boat is on course the pum
63. y default setting should be acceptable for all but extreme applications If after fine tuning all routines and auto deviation routine has been done and poor steering is noted only on some but not all headings magnetic interference is present which must either be compensated for by a compass adjuster and or another compass location must be found 60 Copyright Nexus Marine AB Kuskvagen 4 191 62 Sollentuna Sweden Tel 46 0 8 506 939 00 Fax 46 0 8 506 939 01 www nexusmarine se 22137 1 Edition 1

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