Koden Electronics RB716A Marine Radar RA42C User Manual 06

Koden Electronics Co., Ltd Marine Radar RA42C 06

06

10CHAPTER 3. INSTALLATIONThis chapter describes procedures for installing the RA40C/41C/42C radar in yourship and precautions to be observed during installation. Follow the procedure below to in-stall the radar.3.1 Checking Contents of Your Package First, unpack your package and see if all of the following items are included.RA40C RA41C RA42CItem Q'TY Q'TY Q'TYDisplay unit 1 (RF719A) 1 (RF719A) 1(RF719A) Scanner unit 1 (RB714A) 1 (RB715A) 1(RB716A) Display cover 1 1 1Fuse 2 2 4Interconnecting cable 1 (10 m) 1 (10 m) 1 (10 m)Power supply cable 1 (2 m) 1 (2 m) 1 (2 m)M10 hexagonal bolt 4 sets 4 sets 0M12 hexagonal bolt 0 0 4 setsCarbon brush 0 0 2 Checking contents of your package Checking power supply voltage Determining place of installation Installing scanner unit Installing display unit Connecting cables Adjustment Connecting external equipment When discarding Your radar
11The package contains a 10m interconnecting cable as an accessory. Longer cable isalso available as an option as listed in Tab.3-1.Tab.3-1 Optional Interconnecting CableIn addition to the above components included with your package, the following itemsare also required. Please prepare them separately.Item QTY RemarksTapping screw or M5 bolt and nut 6 sets To install display unitGrounding wire 1 Earth line for display unitGrounding wire and crimp terminal 1 set Earth line for scanner unit3.2 Checking Power Supply Voltage 3.2.1 Power Supply RequirementsFor the RA40C/41C/42C radar to be operated normally, the power supply (battery)detailed in Tab.3-2 is required. Note also that if the battery is discharged, its voltage mayfluctuate greatly, causing the radar to malfunction. When start up the radar system or starttransmitting, an additional rush current is required on the power line. Carefully check thepower supply system including wiring by using a circuit tester.Tab.3-2 Power Supply Requirements*A.C. power cannot be used3.2.2 Fuse ReplacementFor the RA40C/41C/42C radar to be operated safely, proper rating fuses must beused. Tab.3.3 and Tab.3.4 are fuse rating tables for RA40C/41C and RA42C. Check themand replace to the fuse in the package.Tab.3-3 Supply Voltage to Fuse Table for RA40C/41CTab.3-4 Supply Voltage to Fuse Table for RA42CRA40C RA41C RA42CCable length Product No. Product No. Product No.15m 242J160680B 24Y159099B 24Y159169B20m 242J160680C 24Y159099C 24Y159169C25m 24Y159099D 24Y159169D30m 242J160680DSupply voltageused Maximum current Allowable range of voltageDC12V 5A 10.2-41.6VDC24V 2.5A 10.2-41.6VSupply voltageused Main Fuse Motor FuseDC12V 8A/250V or 125V *(6.3• x 32mm) T3.15A/250V or 125V *(5• x 20mm)DC24V 8A/250V or 125V(6.3• x 32mm) T3.15A/250V or 125V(5• x 20mm)
12•••Note: Marked * fuses are in the set as standard.3.3 Determining Place of Installation 3.3.1 Scanner unitA radar's target detection capacity varies greatly depending on the fitted position of thescanner. An ideal fitting position is a location high above the ship's keel line where there isno obstacle all around the scanner. In an actual ship, such an ideal location is limited byvarious factors. Therefore, consider the following suggestions when you determine the placeto install the scanner:(a) Install scanner at a position as high as possible.The higher the installation position, the longer the radio ranging distance.Install the scanner at a position as high as possible after considering the ship'shull structure and radar maintainability.(b) Install scanner away from smoke-stack and mastIf the scanner is installed at the same height as the smoke-stack or mast,radar waves may be blocked, creating shadow zones or generating false echoes.Therefore, do not install the scanner at such a position.(c) Install scanner forward away from obstacle.To avoid creating shadow zones or generating false echoes, install the scan-ner at a position nearer to the ship's bow away from obstacles. When installingthe scanner on a mast, position it in front of the mast. (If obstacles cannot beavoided for the ship's structural reasons, refer to "Shifting away from obstacles"described Page 13.)(d) Do not install the scanner near hot or heat-generating items.Do not install the scanner at a position where it may be subjected to smokeor hot air from smokestacks or heat from lamps.(e) Install the scanner away from antennas of other equipment.Install the scanner as much away from the antennas of a direction finder,radio transceiver, etc. as possible.To eliminate the interference, install the scanneraway from the antenna of radio transceivers.(f) Make the cable length as short as possible.Keep the distance from the scanner to the display unit within the standardcable length of 10 m. If you use longer cable for unavoidable reasons, limit thecable length to a maximum of 30 m for RA40C and 100 m for RA41C/42C.3.3.2 Display unitThe display unit can be installed on desktop, wall surface, or ceiling. Determine theplace to install the display unit that is convenient for navigation and radar operation afterconsidering the following suggestions:Supply voltageused Main Fuse Motor FuseDC12V 10A/250V or 125V(6.3• x 32mm) 5A/250V or 125V(5•x 20mm)DC24V 8A/250V or 125V *(6.3• x 32mm) T3.15A/250V or 125V *(5• x 20mm)!CAUTION
13(a) A place where you can see the ship's bow when you raise your face from theradar screen.(b) A place where there is no direct sun-light to avoid display temperature up.(c) A place where there is good ventilation and minimum vibration.(d) A place where the display unit is apart more than the minimum safe dis-tance from a magnet compass as listed in Tab.3-5 below.Tab.3-5 Minimum Safe Distance from Magnetic Compass3.3.3 Shifting away from obstacles!!!! Shifting from keel lineBy shifting the scanner position from the keel line to the starboard side ofthe ship, it is possible to move shadow zones to the port side which makes itpossible to keep clear vision in the bow direction. The distance to be shifted canbe obtained by calculation depending on the distance from the scanner to obsta-cles using the following equation:Ls=0.4R+D/2 [m] (when R<15m)Ls=0.025R+D/2 [m] (when R>=15m)where Ls = distance to be shifted from keel lineD = diameter of obstacle on keel lineR = distance from scanner to obstacle"""" Obtaining sufficient dip angleRaise the scanner position so that there is a sufficient dip angle θ availablebetween the line of sight from the scanner to the obstacle and the horizontalline. By raising the dip angle above 5°, it is possible to prevent mid- and long-distance shadow zones. The radar cannot detect objects below the line of sight.Master compass Steering compassScanner unit 2.0m 1.4mDisplay unit 2.0m 1.4m Ls R D Scanner Unit Obstacle Keel line Fig.3-1 Shifting from keel line
14 Horizontal line Line of sight θ Fig.3-2 Obtaining sufficient dip angle
153.4 Installing Scanner Unit When you have decided the place of installation, install the scanner unit. If a mountbase like the one shown below is available, it may be easier to install the scanner. If such amount base is not available in your ship, you may install the scanner directly to the roof,etc. In such a case, pay attention to the water drain tube located at the bottom of the scan-ner unit during installation.Note : When the radar mast or mounting bracket has a curvature of more than 2mm, repairit or use spacers.Referring to Fig.3-4, open holes in diameter of 12 mm (0.47 in.) at five locations in themount base and use these holes to fix the scanner unit to the mount base with hexagonalbolts. (Use the template included with this manual.) The bolts included with your radarequipment will suffice for mount base thickness of 9 to 14 mm (0.35 to 0.55 in.). If themount base is thicker or thinner than this, prepare bolts listed in Tab.3-6.Use sealing of silicon when you prevent the bolts from becoming loose. Radome may bebroken if you use locking putty. Do not use an edge that might trap water. Fig.3-3 Mount base Center 214 170 12φ × 4 Unit:mm 65 Forward (8.43 in.) (2.56 in.) (0.47 in.) 35 (1.38in.) For air tube (6.69 in.) 15φ (0.59 in.) 199 (7.83 in.) Forward 185 (7.28 in.) Rotation Radius R550 (3 ft antenna) R700 (4 ft antenna) 14φ × 4 (0.55 in.) Cable inlet 100φ (3.97 in.) RA41C Radome scanner RA42C Open scanner Fig.3-4 Hole positions for mounting scanner
16Tab.3-6 Bolts for Mounting Scanner Unit3.5 Installing Antenna Unit Center 140 140 12φ × 5 60 Forward (5.51 in.) (2.36 in.) (0.47 in.) 30 (1.18in.) For air tube (5.51 in.) ••••••RA40C • Radome scanner Center 214 170 12φ × 4 Unit:mm 65 Forward (8.43 in.) (2.56 in.) (0.47 in.) 35 (1.38in.) For air tube (6.69 in.) 15φ (0.59 in.) 199 (7.83 in.) Forward 185 (7.28 in.) Rotation Radius R550 (3 ft antenna) R700 (4 ft antenna) 14φ × 4 (0.55 in.) Cable inlet 100φ (3.97 in.) RA41 Radome scanner RA42 Open scanner Fig.3-4 Hole positions for mounting scanner Fix four screws Mount base Washer Spring washer M10 Hexagonal bolt Radome(bottom) Chassis Included Fix four screws RA40C/41C Radome scanner RA42C Open scanner Double nuts Spring washer Washer M12 Hexagonal bolt Mount base Scanner base Fig.3-5 Fixing Scanner UnitThickness ofmount base Bolts necessary tofix radome scanner Material Remarks1-4mm(0.04-0.16 in.) M10/M12 × 15 (1.5mm pitch) Stainless4-9mm(0.16-0.35 in.) M10/M12 × 20 (1.5mm pitch) Stainless9-14mm(0.35-0.55 in.) M10/M12 × 25 (1.5mm pitch) Stainless Included with radar14-19mm(0.55-0.75 in.) M10/M12 × 30 (1.5mm pitch) Stainless
17Remove the protective cap covering the rotary coupler on the top of the scanner. Matchthe antenna radiation direction to direction of the arrow markings on the rotation base andfix the antenna in position using the four M8 accessory bolts.3.6 Installing Display Unit After you have finished installing the scanner unit, install the display unit in the sameway. Choose the proper bolt length according to the thickness of the surface on which youare going to install the display unit. Hole diameter is different using bolts from using tap-ping screw. When using tapping screw, open holes in adequate holes. When using bolts andnuts, open holes in diameter of 6 mm (0.24 in.). When you have opened holes, install thepedestal part first and then the display unit.Note : When you install the display by flush mount, refer to appendix "OUTLINE DRAWING".Slide off four triangle corner cover, and fix the display unit to the panel with screws. Afterfixing the display unit, put on corner covers to the corner of the display unit. See APPENDIX. 360 84 Fitting hole (14.17 in.) (3.31 in.) Hole diameter 6mm : Bolts and Nuts Adequate : Tapping screws Recommended screw M5 or equivalent Unit : mm 47 (1.85 in.) 37 (1.46 in.) 60 (2.36 in.) 240 (9.45 in.) 60 (2.36 in.) Forward Fig.3-6 Hole positions for display unitAntenna radiation surfaceArrow
18Avoid a display from operating under direct sun-light. It becomes high temperature at inside of dis-play and display may be broken.!WARNING
193.7 Connecting Cables Lay cables firmly in place by following the instructions below.Note1: Do not bind the cable for the radar collectively with cables of otherequipment (especially power supply cable).Note2: Leave clearance near the inlet of the display so you can remove the dis-play unit easily. This facilitates installation and maintenance of the dis-play unit. (Refer to Appendix.)Note3: Because the cable has a connector fitted on the display and scanner side,if it is necessary to pass cable through a narrow path, fix the scanner-sideconnector vertically using vinyl tape before passing cable through thepath.Note4: Lay cable along the ship's hull or wall surface and attach it in place atintervals of about 40 cm.3.7.0 Interconnecting cable (RA40C Radome scanner) (See Fig.3-8-1)!Ensure that the radar is off. Connect the cable to the receptacle labeled "SCANNER"on the rear panel of the display unit."Next, remove the upper part of the radome from the scanner unit. Avoid bumping itagainst the antenna by lifting vertically. (There are three fixing screws.)#Remove the tape fixing the antenna.$Remove the shield cover located on the astern side. (There are three fixing screws.)%Remove the cable clamping plate and rubber ring, pass cable through the introduc-tion opening, put the rubber ring from both ends of it, and clamp the cable to thescanner unit with screws via the fixing plate. Plug the connector fitted to the cableinto the X1 connector on the PCB.&Replace the aluminum cover. At this time, attach a cable shield onto a ditch withthe aluminum cover. However, be careful that the cable will not be caught up be-tween the main unit and cover.•• ' Replace the upper part of the radome. Be careful not to bump it against the antennain the same way as when removing it. Make sure that the cover is fitted in the correctdirec- tion as shown in Fig.3-7-1. The upper and lower parts of the radome each havethree markings indicating screw positions. Align the upper and lower positions as youmount the radome.3.7.1 Interconnecting cable (RA41C Radome scanner) (See Fig.3-8-2)!Ensure that the radar is off. Connect the cable to the receptacle labeled "SCANNER"on the rear panel of the display unit."Next, remove the upper part of the radome from the scanner unit. Avoid bumping itagainst the antenna by lifting vertically. (There are four fixing screws.)#Remove the tape fixing the antenna. Fixing screws Ship's heading Logo seal on side wall Fig.3-7-1 Fitting Cover (RA40C)
20$Remove the shield cover located on the astern side. (There are four fixing screws.)%Remove the cable clamping plate and rubber ring, pass cable through the introduc-tion opening, put the rubber ring from both ends of it, and clamp the cable to thescanner unit with screws via the fixing plate. Connect 7-pin connector to X11 and9-pin connector to X12 of PCB.&Replace the aluminum cover. At this time, attach a cable shield onto a ditch withthe aluminum cover. However, be careful that the cable will not be caught up be-tween the main unit and cover.'Replace the upper part of the radome. Be careful not to bump it against the an-tenna in the same way as when removing it. Make sure that the cover is fitted in thecorrect direction as shown in Fig.3-7-2. The upper and lower parts of the radomeeach have four markings indicating screw positions. Align the upper and lower po-sitions as you mount the radome. Ship's heading Logo seal on side wall Fix four screws Cable inlet Fig.3-7-2 Fitting cover (RA41C)
21 Antenna Stern side Shield cover Cable shield Radome (bottom) Fixing plate Rubber ring Interconnecting cable Fix connector on PCB(X1) X1 (Connect here) Radome (bottom) PCB Inner shield Fig.3-8-1 Fitting interconnecting cable (RA40C)
22Fix connector on PCB(X11, X12) Antenna Stern side Shield cover Cable shield Radome (bottom) Fixing plate Rubber ring Interconnecting cable X12 (Connect here) Radome (bottom) PCB Inner shield X11 (Connect here) Fig.3-8-2 Fitting interconnecting cable (RA41C)
233.7.2 Interconnecting cable (RA42C Open scanner) (See Fig.3-9)!Ensure that the radar is off. Connect the cable to the receptacle labeled "SCANNER"on the rear panel of the display unit."Use a T-wrench to remove the back covers of scanner unit.#Remove the two bolts securing the transceiver; pull out the transceiver after removingtwo connectors.(to Motor(X1), to Heading switch (X2))$Remove the four bolts securing the fixing plate at the cable entrance.%Remove the metal fixing plate, rubber seal and washer that secure the cable. Pass thecable through as shown in the diagram below; replace the above items and tighten thebolts.&Return the transceiver to its original position and secure it with the removed bolts.'Connect 7-pin connector to X11 and 9-pin connector to X12 of PCB. And connect twoconnector that removed at #.(Refit the scanner covers.Take care not to pinch the cable when refitting the cover.
24 TR unit fixing bolts Remove connector Fixing bolt Fixing plate Inter-connection cable Clumper 5-10 mm Fixing bolt Cable shield terminal Washer Fixing plate Scanner unit Inter-connection cable Rubber Cable inlet Fig.3-9 Fitting interconnecting cable
253.7.3 Grounding wireConnect grounding wire before connecting powersupply cable. Leakage current is too high.Connect grounding wire from the grounding terminal on the rear panel of the displayunit to the ship's hull as shown below.Connect grounding wire from one of the bolts you have attached when installing thescanner unit to the ship's hull as shown in Fig.3-11. (The crimp terminal and groundingwire are not included with the radar equipment.) SCANNER POWER OPTION Grounding terminal Grounding wire Fig.3-10 Grounding display unit to earth Mount base Radome(bottomChassis →→→→ To ship's hull Crimp terminal Grounding wire Radome scanner Grounding wire →→→→To ship’s hull Scanner cover Open scanner !WARNINGFig.3-11 Grounding scanner unit to earth
263.7.4 Power supply cablePower is fed through a knife switch ( or circuit breaker) and protective fuses, as shownin below.WARNING: Do not apply over 41.6V to Radar or Radar may be broken.Fit the power supply cable (included with your radar) to the receptacle labeled "POWER"on the rear panel of the display unit. And connect to power supply as followings. (When youdo not connect external equipment, put tape on red and green wire.)Place the Fuse and connection part where there is no water splash and dry area.When extend the power supply cable, use a suitable cable as below.Ship's Power Voltage Cable conductor Cable max. length cross section 12Vdc 3.5 mm23 m6.0 mm25 m24Vdc 2.0 mm26 m3.5 mm210 m3.8 Adjustment Be sure to operate the following adjustment. If thisis not adjusted properly, the radar picture does notdisplay true image.When you have finished installing the scanner and display units and connecting cables,turn on the power to the display and scanner units and check to see if they operate nor-mally without problem. Then make adjustments as detailed below and check to see if theunits operate normally again. White Black Gray Green Red Power supply cable To display unit DC+ DC- Ground NMEA- NMEA+ To external equipment To power supply Fig.3-12 Power supply cable!CAUTIONGenerator Switchboard Charger StorageBattery12/24VMain switch panel(Knife Switch withFses)Radar DisplayUnitDC voltagereference points
27! TUNING Refer to Adjusting tuning circuit in 5.5.4.5.4" HEADING DIRECTION Refer to Adjusting angle in 5.5.4.5.4# DISTANCE Refer to Adjusting distance in 5.5.4.5.43.9 Connecting External Equipment to Display Unit The display unit has two channels of NMEA input. One is standard in power cable. Theother is necessary to connect optional parts (Junction box with OPTION cable).OPTION connector is located at display’s rear panel for connecting external equipmentsuch as a GPS, LORAN, or gyro compass. You must have an Junction box with OPTION ca-ble. (Refer to CHAPTER 8 (4) External interface.)Note: SIN/COS and MOB signals cannot be used on Junction Box.Junction box with OPTION cable (Order No. RZ704A)3.10 Countermeasure for Electromagnetic Interference RA40C/41C/42C radar provides shields in the units and the inter-unit connection ca-ble. When the radar, however, is closely installed to radio equipment such as VHF trans-ceiver, UHF transceiver, etc., or the radar and/or radio equipment are not sufficientlygrounded to the hull or ship's earth, the radar may happen to cause EMI trouble.Followings are general procedures for reducing EMI due to radars. When installing ra-dars, refer to them, and also check the radio equipment EMI trouble with operating the ra-dar and radio equipment.SCANNER POWER OPTIONOPTION cableJunction box*notePOWER cableExternal NMEA equipmentExternal NMEA equipmentGreen :NMEA-Red :NMEA+To power supplyOther radar,slave monitor,External buzzer,Gyro I/FOther radar,slave monitor,External buzzer,Gyro I/F,SIN/COS.MOB(NMEA out)Fig.3-13 Connecting external equipment to display unit
28(1) Installation Place of RadarThe display unit, scanner unit and inter-unit connection cable should be locatedapart from the main unit, feeder, antenna coupler and antenna of radio equipment asfar as possible.Especially, proper installation of the feeder, antenna coupler and antenna of radioequipment is very important to improve EMI trouble.(2) Laying Power Supply CablesFollowing connections A and B are recommended to reduce conduction noise gener-ated from radar. Connection C should not be used.Connection A(Very Good)Connection B(Good)Connection C(Bad)(3) GroundingAll equipment should be firmly grounded at the earth nearest hull with copper platesor braided wires.Improvement Procedure for EMI(1) Confirm grounding on the radar and radio equipment. However, some equipment, onwhich grounding is not always necessarily, have a possibility of EMI improving whentaking off their grounding. Try to take off grounding.(2) Confirm power supply cable connections and modify to the connection A or B above.(3) Try to shift the display unit and inter-unit connection cable of radar to be apart fromradio equipment.(4) Try to shift the feeder of radio equipment to be apart from each units and the inter-unit connection cable of radar.(5) Try to shift the antenna coupler and antenna of radio equipment to be apart fromthe scanner unit and inter-unit connection cable of radar.3.11 When Discarding Your Radar When discarding your RA40C/41C/42C radar, consult the distributor to get informa-tion on precautions to be followed. Tab.3-7 below lists the primary component materials ofthe RA40C/41C/42C radar for your reference.Tab.3-7 Component MaterialsScanner unit Material Display unit MaterialRadome AES Front panel ABSChassis A5052P Rear panel ADC12Base ADC12 Pedestal ABS+PCAntenna A5052PRADARRADIO EQUIPMENTSHIP'S SUPPLYSHIP'S SUPPLYRADARRADIO EQUIPMENTSHIP'S SUPPLYRADARRADIO EQUIPMENTSHIP'S SUPPLY

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