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Silva NX2 Service Manual

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SERVICE MANUAL
Art. No: 20972-03
Edition No: 1
Latest update: 17 Feb -03

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Summary of Contents for Silva NX2

  • Page 1 SERVICE MANUAL Art. No: 20972-03 Edition No: 1 Latest update: 17 Feb -03...
  • Page 2 When finding a fault in a NX2 Instrument it has to be replaced and returned to Silva according to the NX2 exchange system. As faults and male function in the electronics of the NX2 System is very rare it is essential to start checking wiring and connections on board the boat.
  • Page 3 5.6 NX2 Fault finding guide 5.7 Server NMEA communication test 5.8 Using Multi Center to find reasons of Network faults 5.9 Return of faulty NX2 units to Agent or Silva NX2 Server 6.1 Block circuit diagram 6.2 Trouble Shooting – Test wave forms Server 6.3 PCB Layout with test points...

  • Page 4: General Information

    GENERAL INFORMATION The Silva NX2 system is based round a central network manager, i.e. the Server, see § 2.3. All transducers are connected to the Server which transmits data on a Bus to all connected instruments. In a limited system also the Wind Data, Compass Data and AUTOPILOT servo can be the network manager.

  • Page 5: Software Version

    §5: NX2 FAULTFINDING AND TESTS ON BOARD and Digital multi-meter. Repair of faulty Instruments A faulty NX2 Instrument can only be repaired by Silva due to the high precision re-assembling procedure and the special routines in the gluing robot. Software Version On every SILVA Instrument the software version is shown on the display during the starting up procedure.
  • Page 6 C. NEXUS NMEA 0183 Input/Output, version 1.1 D. NEXUS Network Software Versions E. NMEA Standard 0183 GB = English, D = German, F = French, S = Swedish User Manual NX2 Product & Product Art. No. Language Art. No. 22172-1 Server (22120-1)
  • Page 7 Linear Drive SP-20 (21136-2) 67704-1 Integrated Drive HP-40 (69991-12) Integrated Drive HP-40 (69991-12) Integrated Drive HP-40 (69991-12) Integrated Drive HP-40 (69991-12) Connection Box NX2/Nexus Bus (21456) 67705 Connection Box Wind/Compass Data (21453) 67706 MTC box (21721) 21730 Server Simulator (20592-2)
  • Page 8 NX2/NEXUS NETWORK - BRIEF INTRODUCTION For full information see Appendix A For practical understanding see § 6 Server The NX2/NEXUS Network is a high performance, non collision Multi talker Multi receiver databus especially designed to be used for marine and navigational applications.
  • Page 9 NX2/NEXUS USER POLICY The NX2/NEXUS network is open for new users/applications without the need of a license or license fee. Silva Sweden AB will support PC applications under DOS and WINDOWS™ when using the PC-Interface FD, art. no 21248. The PC-interface will convert the NX2/NEXUS half-duplex data to Full-Duplex data suitable for WINDOWS™...

  • Page 10: Product Type

    NX2/NEXUS PRODUCT TYPE WITH POSSIBLE CATEGORIES Product There are basically 4 different Marine electronic product types, where some of the product types also include NMEA 0183 input & output. • NEXUS Network-Manager • NEXUS Network-Repeater (talk & listen) • NEXUS Network-Repeater (listen only) •...
  • Page 11 Nav-Repeater All NX2 Analog instruments Network Repeater (listen only) None *) Can also be named ”Master” or ”Bus-Master” in some Silva Information material. Stand alone products with no NX2/NEXUS Network! NX2 standalone connected Speed Log instrument STAR Sea Data instrument...
  • Page 12 The example shows that the instrument version number is 2.0 and the given logical ID number is 16. The bottom line will write SILVA when the NX2 Multi Control is of version 3.7 or lower, the same as for Nexus Classic.
  • Page 13 The Locking function gives the owner the possibility to prevent unauthorised users to enter the Set up, Calibration or to move and select sub functions for the whole NX2 System. To lock, long (2 sec.) on “Set” to enter Set up mode.
  • Page 14 NX2/NEXUS NETWORK ERROR MESSAGE WITH CAUSE AND REMEDY If an error message [Err #] is displayed on any instrument, an error has been detected by NX2/NEXUS Network. The message can assist you to diagnose the cause and remedy the error.
  • Page 15 Message and cause Remedy DGPS (RTCM) data ignored. ¤ Change the DGPS (RTCM) setting. GPS bad fix, no fix position (time ¤ Check GPS antenna location. expired at one-fix). No autopilot response. Object is not Check wiring connections and fuse. connected.
  • Page 16 When returning NX2 Instruments to a Service Agent or Silva Sweden each unit should be followed by a NX2 Return Form, filled in as complete as possible to secure high quality on all NX2 products. NX2 instruments followed by a complete Return Form will also pass the Silva administration fast with quick handling and return shipment without any delay.
  • Page 17 NX2 FAULTFINDING AND TESTS ON BOARD The Silva NX2 System can easily be tested on board a vessel. Always start by confirming that the “Maintenance and fault finding” in the Operation Manuals has been checked by the customer. Also be convinced that all system and calibration settings are not causing the problems.
  • Page 18 Test 2: If possible, check the same 4-pole jack plug with another working Digital NX2/Nexus instrument to see if there is a correct Bus-signal from the plug. If this Instrument works well there is fault in the first instrument, and it has to be replaced and sent to Silva for further tests.
  • Page 19 and C75 set to ON Compass no values [- - -] NMEA compass transducer Set C75 to ON and C75 set to OFF Compass wrong COG- Incorrect setting of damping Correct setting of damping values Compass wrong values Incorrect setting of magnetic Correct setting of magnetic variation variation Compass...
  • Page 20 NMEA in No values Wrong NMEA sentences Check set-up in the transmitting unit transmitted Position no values Incorrect selection of position Correct selection of position source Config Nexus / NMEA source position in GPS Navigator Position wrong values Incorrect setting of Correct setting of C38 minutes/seconds, C38 Push button...
  • Page 21 28 (C92) (ZDA) Time and date (ZTG) & (UTC) Time to destination or waypoint. If no NMEA is sent the test failed and the Server has to be returned to Silva for further tests 5FAULTFINDNX2.doc Page 5 Latest update: 24 Feb -03...
  • Page 22 When returning NX2 Instruments to a Service Agent or Silva Sweden each unit should be followed by a NX2 Return Form, filled in as complete as possible to secure high quality on all NX2 products. NX2 instruments followed by a complete NX2 Return Form will also pass the Silva administration fast with quick handling and return shipment without any delay.
  • Page 23 The Nexus Network is designed with the industry standard RS 485 data bus, which allows you to connect up to 32 NX2 instrument units on the single Nexus Network cable, thereby allowing you the flexibility to easily develop your system.
  • Page 24 • If a new unit is added, the bus-master shall take care and the unit will be taken into the ”community” and given its own ID/identity. The NX2 Server will NOT ask every instrument if they have something to say, only if they stop answering to ”next-sender” packet.
  • Page 25 6.1BLOCK CIRCUIT DIAGRAM NX2 SERVER 61servblockNX2.doc Page 1 Latest update: 19 Nov -02...
  • Page 26 6.11 BLOCK CIRCUIT DIAGRAM NX2 DEPTH AMP/ SERVER 611DeptblockNX2.doc Page 1 Latest update: 19 Nov -02...
  • Page 27 TROUBLE SHOOTING - TEST WAVE FORMS SERVER Fault Check Possible DMM test. Oscilloscope indication signal at: reason if not Correct wave form Correct waveform Err 02 or TP 1 Defect D1 +12 V Err 03 Err 02 or TP 2 Defect U1 +5 V Err 03...
  • Page 28 Fault Check Possible DMM test. Oscilloscope indication signal at: reason if not Correct wave form Correct waveform Err 02 or TP 6 No Bus to U6 Defect Err 03 U 6 Pin 1 processor U9 Err 02 or TP 7 No Bus to U6.
  • Page 29 Fault Check Possible DMM test. Oscilloscope indication signal at: reason if not Correct wave form Correct waveform No Depth TP 10 Long SPL can indicate no echo. Deffect Depth No Depth TP10 Deffect Depth Amp. Short SPL can indicate OK echo.
  • Page 30 Fault Check Possible DMM test. Oscilloscope indication signal at: reason if not Correct wave form Correct waveform No Compass TP CA value TP CB U8 Pin 4 = chan.A pin12 = chan.B No NMEA TP 12 If no NMEA out signal on signal on Term.
  • Page 31 28 (C92) (ZDA) Time and date (ZTG) & (UTC) Time to destination or waypoint. If no NMEA is sent the test failed and the Server has to be returned to Silva for further tests 621NMEAtstNX2.doc Page 1 Latest update: 10 December 2002...
  • Page 32 6.3 PCB Layout with Test points – NX2 Server TP 1 TP 12 TP 2 TP 11 TP 10 TP 9 TP 4+5 TP CB TP 15 TP WB TP 6 TP CA TP 13 TP 7 TP 8 TP 3...
  • Page 33 6.4 Circuit Diagram NX2 Server 64servDiagNX2.doc Page 1 Latest update: 17 Feb -03...
  • Page 34 6.41 Circuit Diagram Depth Amp. NX2 Server 641DeptDiagNX2.doc Page 1 Latest update: 7 Jan -03...

  • Page 35: Log Transducer

    LOG TRANSDUCER. Principle of operation When the impeller of the Log Transducer is rotating there are magnets in two of the blades inducing magnetic power in a Hall element. This Hall element signal is converted to pulses of 5 V. The water stream will give 7 pulses/m equal to 12964 pulses per Nautic mile.

  • Page 36: Temperature Sensor

    SERVICE MEASURES The Log transducer function can be checked by measureing the output pulses, yellow to screen wire by oscilloskop or DMM showing ¨2,5 V when paddle wheel is spinning. See also § 4.3 If defect, the Log transducer has to be replaced as a complete unit. Before assuming an electronic fault, ensure that the following is not the reason: a) Paddle wheel is not rotating freely due to sea grass, particles or bottom paint.

  • Page 37: Signal Handling

    The advanced signal treatment in the NX2 Server handles these variations to minimise influence of the depth measurement.

  • Page 38: Trouble Solving

    Important: Do not cut or extend the depth transducer cable! Trouble solving If no natural cause to wrong or no depth readings can be found the most crucial part is the NX2 Server where the signal processing takes place. See § 5.6 NX2 Faultfinding Guide and §6.0 Server. 80deptraNX2.doc...
  • Page 39 WIND TRANSDUCER - MAST TOP UNIT - The basic principle of the windtransducer is to measure the angle and rotation speed of a black and white ball with two opto sensors. In order to be able to transmit the analog value of an angle there is a need of two channels (a sinus and a cosinus) in order not to get some jumps/skips.
  • Page 40 9.0.1 Calibration of Wind Transducer To get accurate wind angle read out in the NX2 system the Wind transducer has to be calibrated for the C.55 to C62 settings. Repair at SILVA Sweden will always be followed by a Calibration Certificate from the Calibration jigg.
  • Page 41 SERVICE MEASURES The possible faults on a Wind Transducer can be split up in Mechanical and electrical faults. Mechanical Fault Source of error Remedy Calibration Chapter needed Propeller broken or Replace Propeller § 9.1.3 lose P/N 20091 or § 9.1.4 Nosecone 20727 Propeller slack Replace Nosecone...
  • Page 42 9.1.2 SEALING PROCEDURE The most determining factor for a long reliable lifetime of the Wind transducer is the tightening of the unit and hereby protecting the bearings from moisture. The use of new gaskets and Silicon glue in well balanced quantity at the adjacent surfaces and screws will secure tightness.
  • Page 43 9.1.3 REPLACING PROPELLER, Part.No 20091 Dismantling a) Unscrew the four screws fixing the nose cone. b) Lift off the nose cone. Be careful, so that the opto elements are not damaged or displaced. Turn the direction of the housing to 135° - 180° before lifting off the nose cone. c) If the defect propeller is still on the axis try with a pointed but strong pliers to keep the axis fixed when unscrewing the old propeller off.
  • Page 44 If adjustment is required, press carefully the opto element (down end, not in top end) in necessary direction to obtain smooth rotation of wind head. Check also the four main directions to ensure stable and accurate readings. For calibration see § 9.0.1. 9.1.5 REPLACING THE T-HOUSING, Art.No 18898 Dismantling...
  • Page 45 g) Re-solder the wires to the new PCB. Re-assembly In opposite order, but note the following: Be careful with the wires when they are put through the opening in the bottom of inner tube. Bend them as fig. shows before the amplifier PCB is pressed down in place. Be aware of that the component side of the PCB is facing forward.
  • Page 46 9.4 Circuit Diagram NX2 WIND TRANSDUCER 94MtuDiagNX2.doc Page 1 Latest update: 7 Jan –03...
  • Page 47 Press the two laps over and down at A and solder A. Same procedure for pin device, art.no 18848. Pin and socket configuration. The numbers are marked at each pin and socket. Mast Cable Transducer Note!! NX2/NEXUS Function Transducer 1. Green + 12 Volt = Red 2. Brown/Screen...

  • Page 48: Compass Transducer

    COMPASS TRANSDUCER Principle of operation The magnetic field is measured by use of two coils 90° perpendicular with one ferrite rod in each coil that are forced into saturation by a known current. The known magnetic field is mixed with the outside unknown magnetic field, and the difference are converted into a amplified voltage signal that is compared to a known reference voltage.

  • Page 49: Technical Specification

    5 deviated compass headings per second on the NEXUS Network. The NX2 Server will output NMEA 0183 compass data from 1 to max. 4 times per second (selectable). The Server is operated by use of the NX2 Multi Control, Multi Center or NX2 Remote Control instrument and will perform an Automatic deviation and an Automatic check.
  • Page 50 10.2 TROUBLE SHOOTING - TEST WAVE FORMS COMPASS TRANSDUCER 45° Fault Check Possible DMM test. Oscilloscope indication signal at: reason if not Correct wave form Correct waveform No output TP 1 Defect V1 or +12 V signal LC 1 No output TP 2 Defect U2 +8 V...
  • Page 51 Fault Check Possible DMM test. Oscilloscope indication signal at: reason if not Correct wave form Correct waveform No output TP 6 +7 signal possible U 7 Pin 10 (pulse) resp. 12 102TrubShotNX2.doc Page 2 Latest update: 14 Feb -03...
  • Page 52 10.21 TROUBLE SHOOTING - TEST WAVE FORMS COMPASS TRANSDUCER 35° Fault Check Possible DMM test. Oscilloscope indication signal at: reason if not Correct wave form Correct waveform No output TP 1 Defect V1, D3 +12 V signal or LC 1 No output TP 2 Defect U1...
  • Page 53 Fault Check Possible DMM test. Oscilloscope indication signal at: reason if not Correct wave form Correct waveform No output TP 6 DC 4 V signal U 3 Pin 4 No output TP 7 DC4 V signal Q8 and Q4 pin 3 1021TrubShotNX2.doc Page 2 Latest update: 14 Feb -03...
  • Page 54 TP 1 TP 2 TP 6 TP 3 TP 7 TP 4 TP 5 104DIAGRNX2.DOCn –03 Latest update: 11 Feb -03...
  • Page 55 TP 6 TP 1 TP 2 TP 7 TP 4 TP 5 TP 9 TP 3 1041diagr35nx2.doc Latest update: 11 Feb -03...
  • Page 56 The Auto Pilot Instrument is the control unit in a NEXUS Auto Pilot system. It can be used as a standalone unit, or as a part in a NX2 network system with the Server. The reference to which the Autopilot shall steer on can be selected, Heading, Wind or towards a Waypoint.

  • Page 57: Technical Specifications

    Technical specifications Dimensions: NX2 MULTI Control instrument: 113 x 113 x 23+28 mm (4,4 x 4,4 x 0,9 + 1,1 inch). Server: 110 x 165 x 30 mm (4,3 x 6,5 x 1,2 inch) Instrument cable: 8 m (26 ft).
  • Page 58 There are also multiple trim possibilities with the external trim button for the racers as well as the cruisers. Both the NX2 Wind and Compass Data the instrument can be used as a Network Manager, or as a Network Repeater, this is set in Calibration C 71 and C 72.
  • Page 59 Technical specifications NX2 Wind and Compass Data instrument: 113 x 113 x Dimensions: 23+28 mm (4,4 x 4,4 x 0,9 + 1,1 inch). Instrument cable: 0,4 m (16 inch) Power supply: 12V DC (10-16V). The instruments are polarity protected. 9 mA at 12 V=0,11W...

  • Page 60: Analog Instruments

    You need a digital Network instrument to be able to use an analog repeater. Service measures Silva NX2 instrument series is build according to IP68/IP66 standard which means that the instruments are sealed and can not be opened. The basic service measures on all Analog instruments are based on Faultfinding, see §5, replacing defect units according to the NX2 Replacement system...
  • Page 61 Technical specifications NX2 Analog instrument: 113 x 113 x 23+28 mm Dimensions: (4,4 x 4,4 x 0,9 + 1,1 inch). 0,4 m (16 inch) Instrument cable: Power supply: 12V DC (10-16V). The instruments are polarity protected. Power 70-90 mA at 12 V=0,8-1,1W...
  • Page 62 MULTI XL INSTRUMENT NX2 Multi XL is a enlarged Multi function instrument that displays a main function in 40 mm high figures and a sub-function in 22 mm. It is easy to ”customise” a favourite combination of functions, by using the unique method to move, copy and lock a sub-function.
  • Page 63 REMOTE CONTROL INSTRUMENT Remote Control instrument can be connected directly to a NX2 instrument on the Nexus Network, or to the NX2 Server, and you do not have to re-calibrate the transducers or the current system set-up. The Remote Control instrument is more than just a remote control.
  • Page 64 GPS NAVIGATOR INSTRUMENT The NX2 GPS Navigator can be used as a separate navigator or integrated in the Nexus Network. It can also be used in combination with other GPS-system through the built in NMEA port. Using Waypoints, sail-plans and routes can be done not only on the GPS Navigator but also from other Instruments in a connected NX2 Network.

  • Page 65: Gps Antenna

    Silva NX2 GPS Antenna is highly integrated and thoroughly trimmed unit. This means that the electronics should in case of male-function be replaced in its hole. For Faultfinding, see § 5; replace defect electronics according to the NX2 Replacement system.
  • Page 66 MULTI CENTER INSTRUMENT The Multi Center can be the ‘center’ of a boats navigation system, including a chart plotter. The use of the Multi Center is operation through menus similar to a Windows program The Multi Center monitors all boat data on the NEXUS network. Some functions may be displayed in graphs, such as wind direction , wind speed, depth etc.

  • Page 67: Dismantling And Re-Assembly

    Reset: To reset the unit: Keep the CLR -button depressed during start, ON. NOTE! All settings will be reset to default values and all Waypoints will be erased Technical specifications NX2 MULTI Center: 160 x 185 x 45mm Dimensions: (6,3 x 7,3 x 1,8 inch).
  • Page 68 • Do the re-assembling in reversed order of above instruction for dis-mantling and not the following: • Use an injector with silicone and place a thin string of silicon in the groove and on the seats for the screws. • Be careful with the threads when screwing the screws. The 5 screws should be tighten with a torque of 1 Nm.

  • Page 69: Spare Parts List

    20.5 SPARE PARTS LIST MULTI CENTER Art.No 21621 Art.Nr Identity Description Package 21584 I-Front 67603 LCD Display cpl. w.Suppor Assembly 67604 PCB CPU Complete 67605 Keyboard Set 21896 Sheld Plate Internal 21897 Screw M3x10 Inox 33394- Screw M3x10 Inox 21898 Washer M3 21899 O-Ring 2,57x1,78 Sh70hr...

  • Page 70: Nmea Input

    4800-baud serial data bus. Each bus shall have only a single TALKER but may have multiple LISTENERs. Silva is a member of NMEA (National Marine Electronic Association), which with over 350 members represents the most considerable part of the whole marine electronics industry.

  • Page 71: Nmea Output

    The following sentences can be selected (from MULTI Instrument: Remote Control or Multi Center): The NX2 Server sends NMEA-sentences continuously. The following, C77 to C92 per below, is transmitted in default setting of the NX2 Server (see also User Manual 3.11.1) (- - -)
  • Page 72 Examples of each sentences listed above: $IIAPA,A,A,00.007,L,N,V,V,145.03,M,004 $IIAPB,A,A,00.007,L,N,V,V,147.53,T,004,147.52,T,,T*29 $IIBOD,147.53,T,145.03,M,004,000 $IIBWC,101515,5912.890,N,01812.580,E,147.52,T,145.02,M,15.649,N,004 $IIBWC,,,,,,147.52,T,145.02,M,15.647,N,004 $IIBWR,101516,5912.890,N,01812.580,E,147.52,T,145.02,M,15.647,N,004 $IIDBT,293.52,f,089.47,M,048.36,F $IIDPT,089.47,0.40 $IIGLL,5926.110,N,01756.171,E,101517,A $IIHDM,026,M $IIHDT,029,T $IIMTW,19,C $IIMWD,161.77,T,159.27,M,07.01,N,03.61,M $IIMWV,133,R,07.03,N,A $IIRMA,A,5926.110,N,01756.171,E,,,0.23,189.47,,,,*00 $IIRMB,A,00.007,L,000,004,5912.890,N,01812.580,E,15.647,147.52,,V*01 $IIRMC,101340,A,5926.115,N,01756.172,E,0.04,063.42,,,*06 $IIVDR,063.42,T,060.92,M,0.04,N $IIVHW,029,T,026,M,00.00,N,00.00,K $IIVLW,49626.59,N,, $IIVPW,0.00,N,, $IIVTG,063.42,T,060.93,M,0.04,N,, $IIVWR,133,R,07.03,N,03.62,M,, $IIVWT,133,R,07.01,N,03.61,M,, $IIWCV,0.00,N,004 $IIWPL,5503.000,N,01013.450,E,027 $IIXTE,A,A,00.003,L,N $IIZDA,101341,,,, $IIZTG,101341,,004 21NMEA-NX2.doc Page 3 Latest update: 27 Jan -03...
  • Page 73 Race timer is sent as if it was a negative boat-speed with seconds as decimals. This sentence is only available from NEXUS Server units version 2.5 and later. • The only proper use for this sentence is together with the Silva MAXI-Repeaters. 21NMEA-NX2.doc Page 4 Latest update: 27 Jan -03...
  • Page 74 20535 Connector Set, 5 pcs 0,75 mm + 5 pcs NX2/Nexus Classic 0.25 mm 22065 Cable for PC connection D-SUB + D-SUB NX2/Nexus Classic LOG AND DEPTH TRANSDUCERS 21439 Log/Temp with O-rings and lock wire 19915-8 Depth 185KHz, removable, with o-rings and lock wire...
  • Page 75 Art.No. Description Designed for: WIND TRANSDUCER (Masttop unit) 20727 Nose cone complete Nexus Wind Transducer 67518 Ball for Wind transducer Nexus Wind Transducer 20091 Propeller Nexus Wind Transducer 20077 PCB amplifier board Nexus Wind Transducer 20402 Bearing 25x20x4 Nexus Wind Transducer 18630 Spacer 25x23x4 Nexus Wind Transducer...
  • Page 76 ACCESSORIES 22120-1 NX2 Server cpl. With 3m. power cables 21556 Connection box Nexus Network 21453 Connection box Wind Data /Compass Data, incl. 6 m cable (6-pole) 20081 External alarm buzzer, for Nexus Server 19763 Remote push button, for external M.O.B. or Trim function...

  • Page 77: Service Department

    Handling/Shipping: +46-8-623 43 60 yvonne.bostrom@silva.se NX2 Return Form We need the following information attached to each NX2 Product returned for replacement or Credit. The ¤ marked information are mandatory. Unless those are filled in, no action is taken and no Credit is made.

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