Furuno WR2120 Installation Manual
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Furuno WR2120 Installation Manual

Weather radar
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INSTALLATION
MANUAL
WEATHER RADAR
WR2120
MODEL:
www.furuno.com

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Summary of Contents for Furuno WR2120

  • Page 1 INSTALLATION MANUAL WEATHER RADAR WR2120 MODEL: www.furuno.com...
  • Page 2 SAFETY INSTRUCTIONS The operator and installer must read the appropriate safety instructions before attempting to install or operate the equipment. Indicates a hazardous situation which, if not avoided, will result in DANGER death or serious injury. Indicates a potentially hazardous situation which, if not avoided, WARNING could result in death or serious injury.
  • Page 3 Do not disassemble or modify the equipment. Fire or electrical shock can occur. Use only the specified power cord/cable. Fire or damage to the equipment can result if a different cable is used. Use the power supply grounded certainly. Electrical shock or defect of operation can occur. When a thunderbolt is expected, do not approach a system or do not touch a hand.
  • Page 4 WR2120 Restrictions There are restrictions frequency band; CH1: 9422.5MHz, CH2: 9427.5MHz, CH3: 9432.5MHz, CH4: 9437.5MHz in the following countries: Switzerland, Lithuania, and Slovakia. Shipment of Weather Radar Whole weather radar equipment (ATU, SPU, DPU, and others) will be shipped by air or sea from Japan to overseas.

  • Page 5: Table Of Contents

    TABLE OF CONTENS SAFETY INSTRUCTIONS ..................... I 1. SYSTEM SUMMARY ....................1 1.1. Type of Radar Bands ..................1 1.2. Anatomy of Weather Radar ................2 1.3. Mechanical Operation ..................3 1.4. Multi-radar System ..................3 1.5. Side Lobe ......................4 1.6.
  • Page 6 4.4. Data Processing Unit..................38 4.4.1. Startup DPU ..................38 4.4.2. Add external data storage device ............38 4.4.3. Renew A-threshold ................38 5. AZIMUTH INITIAL SETTING .................. 39 5.1. Magnetic Compass ..................39 5.2. Echo (Clutter) ....................40 5.3. Solar Position Simulator ................

  • Page 7: System Summary

    X band but is just more sensitive. It operates on 0.75-1.2 cm or 1.7-2.5 cm wavelength and a corresponding frequency of 27-40 GHz and 12-18 GHz. Difference between conventional weather radar and FURUNO Range Application for meteorological disaster prevention...

  • Page 8: Anatomy Of Weather Radar

    1.2. Anatomy of Weather Radar Radome Sub reflector Antenna 70km Receiver Transmitter Antenna: The main purpose of the antenna is to focus the transmitted power into a narrow pencil beam and also to receive and collect the returned signal. Radome: Protects the antenna from high winds, dusts, and rain.

  • Page 9: Mechanical Operation

    The single X-band weather radar can be difficult to avoid problems with blind areas due to buildings, mountains or strong signal extinction by heavy rain. Furuno provide multi-radar system that consists of three radar systems. While two radar systems are detecting and tracking rain clouds and observing their movements, the other one is working as RHI sector scan mode at high speed and cutting through the clouds to observe their internal structures.

  • Page 10: Side Lobe

    FURUNO radar Conventional radar Figure 1.4: FURUNO radar detects cumulonimbus cloud Figure 1.3: Image of using 3 radars faster than conventional radar 1.5. Side Lobe The energy radiated from an antenna forms a field having a definite radiation pattern. A radiation pattern is a way of plotting the radiated energy from an antenna.
  • Page 11 Front-to-Back Ratio: The front-to-back ratio of an antenna is the Beam width proportion of energy radiated in the principal Main lobe direction of radiation to the energy radiated in the opposite direction. A high front-to-back ratio is Side lobe desirable because this means that a minimum amount of energy is radiated in the undesired direction.

  • Page 12: Location Of Radar Installation

    Suppression Ratio Range Side Lobe Figure 1.8: Ideal Condition Figure 1.7: Actual Condition Main beam 0.62m -3deg Main lobe Return produces ground clutter Main lobe threshold: -20dB Figure 1.9: Distance of main lobe 1.6. Location of Radar Installation 1) Confirm the observed region in relation the topography features In this example the radar must cover an altitude of 1500 meters maximum and a 70km distance radius within the rainfall forecast area.

  • Page 13: Radar System Certificate

    4) Survey antenna surroundings Ensure no interference to any surrounding antenna (e.g.: Broadcast, mobile (cell) phone station, radio, BS/CS, etc.) and no obstacles should be around the antenna. Moreover, secure a service space of 1 m or more around the antenna. In addition, strong reflections can damage the receiver if there are obstacles nearby.

  • Page 14: Requirement Of Calibration

    1.8. Requirement of Calibration Calibration is the activity of checking or measuring and comparing with a specific standard reference instrument. It may also include adjustment of the system to bring it into alignment with the standard. 1.9. Peripheral Devices - External HDD (Hard Disk Drive): Useful for saving large amounts of data. Use USB3.0 device type to transfer the data at high speed.

  • Page 15: Specifications

    2. SPECIFICATIONS 2.1. Antenna Unit Parameter Descriptions Remarks Unit name WR2120-ATU Operating Frequency 9.4 GHz band Carrier Frequency Maximum range 70 km Displayable observation range: 70 km Max. ±64m/sec Doppler measurement 100 to 240VAC, Single Phase, Power supply 50/60 Hz Size Φ980mm×H1068mm...

  • Page 16: Signal Processing Unit

    2.2. Signal Processing Unit Parameter Descriptions Unit name WR2120-SPU Rainfall intensity R (mm/h), Reflectivity factor Zh (dBZ), Doppler velocity V (m/s), Differential reflectivity Zdr, Specific differential phase Kdp (deg/km), Data Output Cross polarization difference phase φdp (deg), Co-polar correlation coefficient ρhv,...

  • Page 17: Data Processing Unit

    Hardware Parameter Descriptions Unit name WR2120-DPU [Accessories] DPU-PS 100-240VAC, 50/60 Hz Bundled AC power cord (Socket IEC C13 / Plug Type-B) is only for US and Power supply Japan (100 to 125VAC). Do not use the bundled cable in other area, it may cause fire or damage the equipment.

  • Page 18: Accessories

    Notice: Condition of the data communication (Transfer efficiency: 50%) Baud rate Cycle (Data transmission possibilities) 1Mbps/min or more 4 elevations/ 5min. 4Mbps/min or more 2 elevations/ 1min. 8Mbps/min or more 4 elevations / 1min. 2.4. Accessories Cables & Tube [Antenna Unit (radome) --- Signal Processing Unit] Items Descriptions Length...

  • Page 19: Construction Material List

    Accessories for maintenance Items Descriptions Security lock key For SPU box with key x2 Maintenance tool box Size: L410x150x100 [mm] Material: SUS304. PXI Screwdriver #1 For PXI FAM(FlexRIO Adaptor Module) replacement SMA torque wrench 0.9 N-M (8 in-lb.) for SMA 3.5mm K & V connector Holding the radome cover up above in order to access inside M10 x400mm threaded bolt the radome when maintenance...
  • Page 20 Basic expendable supplies Items Descriptions Heavy Duty Cable Tie (2 types) Nylon 6/6 w/ weather resistance 100mm, 150mm Multi Basic construction tools Items Descriptions Hex key (Ball-head type) M4 (3mm) M5 (8mm), M12 (19mm), M16 (24mm), Ratcheting Wrench Adjustable wrenches (up to 30mm) Socket Wrench M10 (17mm) for fixing upper radome to bottom radome Exclusive Philips Screwdriver #1...

  • Page 21: Prior Confirmation

    3. PRIOR CONFIRMATION 3.1. Confirmation Items The set of “accessories for installation” (Refer to section 2.4) must be installed properly on Antenna Unit (radome). Power cable (AC100V-240V) must be routed safely. Power cable gauge should be selected depending on its length. Frequency of AC power source must be 50Hz or 60Hz sine wave and single-phase current.

  • Page 22: Measurements

    3.3. Measurements Notice: Measure the main AC power before powering on the radar. Items Descriptions Remarks Resistor Voltage Current Tester 0.1 to 10M ohm Digital Multimeter AC : 85 to 240V AC : 1 to 10 A Lead Cables DC : 1 to 50V DC : 1mA to 1A Measurement range : ≧...

  • Page 23: Construction

    4. CONSTRUCTION During the environmental survey all installation not only ATU and SPU, but also places for DPU, cables, protective pipes, should be carefully considered. 4.1. Requirement for Radar Stand The radar stand is used when installing the weather radar at a specific observation point. The antenna unit is mounted on the top of the radar stand, and the Signal Processing Unit is usually mounted on the bottom part of radar stand.

  • Page 24: Service Space For Maintenance Atu And Spu

    4.1.1. Service space for maintenance ATU and SPU For maintaining inside the ATU, use the maintenance tool to lift and secure the upper radome by 350 mm as described in section 4.2.5. It is possible to replace almost all components of ATU except Rotary Joint (SP RJ-AZ Assy). For replacing Rotary Joint, it has to remove the upper radome to bring it down to the working plane first.
  • Page 25 Case 1: Height of the radar stand is below 0.9m. Scaffold is not necessary because it can maintain directory to ATU from working plane. Radar stand Figure 4.4: Installation without scaffold Case 2: Height of the radar stand is between 0.9 to 2m. Scaffold would be necessary when maintain is not possible to do direct ATU from the work plane.
  • Page 26 Case 3: The radar stand is higher than 2m. The ladders are placed inside the rack for safety during lifting. In order to climb the scaffold from the inside of the radar stand, it has to make a structure with a gap at least one place where the service engineer can go through.

  • Page 27: Radar Stand Dimension

    4.1.4. Radar stand dimension The mounting part of ATU should be CABLE ENTRIES designed as shown in the outline drawing of 2pcs. ° the Antenna Unit (84-001-300G- *). ° ° 4xM16 BOLTS ° These sizes are based on 165 cm tall of service engineer.
  • Page 28 Upper radome Service engineer Height = 1650 (mm) Figure 4.8: [Front view] Lifting up the upper radome and fix by threaded bolt Required height when Arm length = 600 lifting up the upper radome Upper radome Service engineer Height = 1650 Height is different as Figure 4.6.

  • Page 29: Antenna Unit

    4.2. Antenna Unit 4.2.1. Divide the Antenna Unit ATU can be divided into 3 parts, when necessary. [mm] Radome bottom Radome top Internal unit 1) Put Antenna Unit on a workbench Loosen the 12, M10 bolts around the radome and remove the radome top. M10 will remains on the radome bottom.
  • Page 30 2) Remove internal unit from radome base by completely removing M8 bolts and M16 bolt set. internal unit will get damaged if placed directly on the floor without removing the M16 bolts. It may also damage them (the press fit nut comes out from the base plate) if placed on the floor with M16 high nut loosened.

  • Page 31: Transport

    4.2.2. Transport Hold flange area of radome when carrying ATU by hands. Do not hold tube connector. Do not hold the tube connectors 4.2.3. Lifting fixture Rotate lifting fixtures from storage (shipping) position to installation position before using it. [Note: Do not loosen the M16 high nuts. If these are loosening, the internal unit may be damage while lifting] Turn the lifting fixture outward by slightly...

  • Page 32: Mounting And Leveling The Antenna Unit

    4.2.4. Mounting and leveling the Antenna Unit Example: Using a frame type of radar stand to mount the ATU. Use 4 M16 bolts to fix the ATU to the stand. Do not forget to put M16 Flat washer (L) on the stand holes before install ATU on it.
  • Page 33 Confirm all four nuts that are securely tightened and without having any strain to radome or stand after leveling the radar. (1) nut, (2) flat washer (L) and (3) radar stand should not have any gap when tightening the (4) nut. (1) Nut (2) Flat washer (L) (3) Radar stand...

  • Page 34: Opening The Radome Temporary

    4.2.5. Opening the radome temporary This requires another people on the opposite side. When open radome temporary, use long threaded bolts to secure the upper radome for maintenance work if it is not possible to remove the upper radome. This bolt set is in the maintenance tool box. Put these bolts from bottom holes to the fixed nuts on the upper radome.
  • Page 35 1) Loosen the 12, M10 bolts that attach the bottom of radome. This M10 bolt has fall prevention structure, loosen the bolt until it moves freely up and down. The bolt will come out if keep turning it Radome base loosen.
  • Page 36 Normally 4 threaded bolts will be enough while windless. It can insert up to 8 bolts to set radome stable against the wind conditions. Set the nut to make10 mm space from the end, and fasten the spring clamp around the center of bolt as shown below.
  • Page 37 Lift the upper radome until spring clamp Remove spring clamp from bottom of contacts the radome base flange. flange and reattach it at upper of the flange. Check antenna orientation. If the antenna is facing at horizontal direction, then rotate the antenna to a counter weight down to face up around at 90 degrees (upward).
  • Page 38 For reducing from the wind-induced movement, fasten the spring clamp above the base flange and tighten bottom nut by hand. * Do not damage the radome gasket when fasten the spring clamps. * Use the spring clamp properly as examples shown below. Figure 4.18: Fasten properly by spring clamp Bad examples:...

  • Page 39: Tube Connector

    4.2.6. Tube connector 1) Tube connectors are attached to ATU and SPU which consist of parts below. It is water and dust proof product (IP55) when appropriately connecting with the protective tube. Tube Lock Gasket Gasket Remove a cap. Protecting tube Cut protecting tube neatly Do not use with uneven edges...

  • Page 40: Wiring

    Fix AC power cable 2) Wire the power filter Warning： Electric Shock Hazard Unplug the power of the WR2120-SPU before servicing. (1) Fix / Connect AC power cable (3cores) (2) Confirm wiring on the circuit diagram of power filter label before connecting.

  • Page 41: Signal Processing Unit

    4) Cover upper radome and fix 12 pcs of M10x35 bolt which remains on the bottom radome with fall prevention structure. 12xM10 Stopper Bolt Open/Close radome 5) Protective tube connection Every location must have to measure a length in between ATU  SPU  DPU for adjusting the length of protective tube.
  • Page 42 4. (3) RX-FIL 3. (2) LAN cables 3) Connect the cable from Data Processing Unit. Warning： Electric Shock Hazard Unplug the power of the WR2120 -SPU before servicing. (1) Connect the main power cable to the RX IF V RX IF H...
  • Page 43 Proper way of using torque wrench: Caution: Do not push beyond initial break point. Hold it lightly and must follow to Bend the head of [Bad example] the tighten direction to apply force. wrench a little and stop DONOT bend it too much 5) Pull outdoor cable into protective tube.

  • Page 44: Data Processing Unit

    4.4. Data Processing Unit Setup Data Processing Unit: (1) Connect DC power cable of DPU-PS to DPU. (2) Connect AC power cord to DPU-PS and to electrical outlet. (3) Connect DVI cable from LCD monitor to DPU. Also connect the power cord from LCD monitor to a local power outlet.

  • Page 45: Azimuth Initial Setting

    5. AZIMUTH INITIAL SETTING Before or after execute the “Renew A-threshold” on section 4.4.3, the radar must adjust the azimuth offset. The radar orientation and actual geographical azimuth are normally different causing an incorrect initial echo indication. An azimuth adjustment is required for proper echo orientation.

  • Page 46: Echo (Clutter)

    5.2. Echo (Clutter) Use a topographic map w/ terrain to find out the location where install the radar from web site (It is not necessary if a map is already installed in the RainMap) to adjust the azimuth compare with the RainMap echo of radar.

  • Page 47: Solar Position Simulator

    Before After Figure 5.1: Image of azimuth adjustment Note: Some location will be difficult to adjust an azimuth from map if none of the mountain or any ground clutter is surrounding within 70km. But there might have a solution for example, if it is in a flat country like Denmark, a water tower in Lund, and Sweden, it used -1 degree, 10 km range and was able to detect coastline and the city boarders of Copenhagen.

  • Page 48: Antenna Position Analysis Operation

    5) Latitude and longitude will be displayed on the screen graph. - Blue line means solar position and orbit. - Red point means solar position (atmospheric refraction included in measurement) with current time. [Note: Red point will only indicate during day time and not available during night time] - The angle of current solar azimuth and elevation is shown with the number of degree.

  • Page 49: Solar Observation

    5.3.4. Solar observation It is necessary to change the RainMap settings for Press [Alt]+[Ctrl]+click [Setting] observing solar radiation. Press [Alt] + [Ctrl] + click [setting] menu of RainMap for using the advanced setting. 1) Setup TX Sector Blank for all angles shown below: Blank area 1: ON AZ start angle [deg]: 0.00 AZ end angle [deg]: 360.00...
  • Page 50 EL start angle: Current solar elevation angle of sun -15 deg. [Note: Minimum elevation must be higher than 25 deg. If this elevation is lower, that means it did not measure accurately) EL end angle: Current solar elevation angle of the sun +15 deg. (Refer to Figure 5.4.

  • Page 51: Conclusion

    8) Adjust both (A) Sector PPI and (B) Sector RHI to complete them. Notice: Do not forget to do the [Auto ground clutter mapping] after changed value of the [Origin EL position offset correction]. (Refer to the “Operator’s manual” for operation) 5.3.6.

  • Page 52: Outline Drawing

    6. OUTLINE DRAWING 1) Antenna Unit...
  • Page 53 2) Signal Processing Unit...
  • Page 54 3) Data Processing Unit...
  • Page 55 4) Data Processing Unit - Power Supply...

  • Page 56: System Diagram

    7. SYSTEM DIAGRAM Coaxial LAN STP Cat5e IF TX IF TX RJ45 RJ45 RJ45 Coaxial IF Rx H IF Rx H Keyboard Coaxial Mouse IF Rx V IF Rx V USB/LAN USB3.0 USB3.0 Adaptor DC IN LAN STP Cat5e LAN STP Cat5e DC OUT HDMI RJ45...

  • Page 57: Appendix

    APPENDIX LIGHTNING PROTECTION ASSESSMENT A.1. Introduction This document outlines lightning protection based on the international standard IEC (International Electrotechnical Commission) 62305 series. The series consists of four documents as shown below: IEC 62305 series: Protection against lightning IEC 62305-1:2010 Part 1: General principles IEC 62305-2:2010 Part 2: Risk management IEC 62305-3:2010 Part 3: Physical damage to structures and life hazard IEC 62305-4:2010 Part 4: Electrical and electronic systems within structure...
  • Page 58 Identify the structure to be protected Identify the types of loss relevant to the structure For each type of loss, identify and calculate the risk components R > R Structure protected Protection needed Is LPS installed? Calculate new values Are SPM installed? of risk components >R Install adequate...

  • Page 59: Assessment Of Risk Components

    A.2.2. Assessment of Risk Components Each risk component �� , and �� , consists �� and �� may be expressed by the , �� �� , �� , �� �� ��, �� �� �� �� following general equation: �� = �� ×...
  • Page 60 Assessment of annual number �� of dangerous events: �� According to the statistic information provided by the National Environment Agency of Singapore, average thunderstorm days per year (�� ) at Changi is 168. The lightning ground flash density �� �� ��...
  • Page 61 The collection �� extends to a line located at a distance of 500 m from the perimeter of the �� structure: = 2 × 500 × ( �� + �� ) + �� × 500 �� �� where length L and width W of the structure are expressed in meter. Therefore the �� and ��...

  • Page 62: Risk Assessment Conclusion

    A.2.3. Risk assessment conclusion Values of the risk components for the unprotected structure are reported in the regulation. The public service loss (L2) and the economic loss (L4) are relevant for this type of structure. It is required to evaluate the need for protection. This implies the determination of the risk �� for L2 and risk ��...

  • Page 63: Solution

    A.3. Solution Ways to make a current installation safer. Lightning protection level definition: Lightning protection level (LPL) is defined in the regulation based on peak current. LPL will be selected for installation situations where LPL IV is generally used. Protection area will be made using rolling sphere, its radius is determined in the Table A.7.

  • Page 64: Modification Plan

    A.4. Modification Plan As shown in Table A.6 the current condition is not enough to protect the weather radar. It would propose the following modification plan to protect the weather radar. Extend existing lightning rod: It installed a new lightning rod to protect the radar, but it is due to some restrictions.
  • Page 65 Add extra lightning rod: This is an example of adding a lightning rod to compensate for existing lightning rod limitations: It is installed next to a chimney, 8 meters away from the radar. In this case the chimney is fixed, therefore it is better to install a new lightning rod as shown in Figure A.4.

  • Page 66: Protection Of Structures Against Lightning

    Table A.9: Height requirement for the new lightning rod Height LPL Condition 7.305 m 5.475 m 4.472 m 4.0 m A.5. Protection of Structures Against Lightning Old lightning and angle of protection standard: Old standard stated the protection angle of lightning rods for protecting of people from lightning, electrical facilities, petroleum complexes, gas tanks, plant, and equipment was 60º...

  • Page 67: Conclusion

    New standard lightning and angle of protection: Lightning rod height and protection efficiencies were revised when IEC standards were renewed in 2003, replacing the older 1990 standard. The angle of protection decreases as the height of protected structure gets higher. Any protection level of structure over 60 meters will not be enacted in the protection angle because a lightning rod is ineffective for buildings over 60 meters when a side-on lighting strike hits side of a building.

  • Page 68: Communication Network

    B. COMMUNICATION NETWORK Radar needs an internet connection to provide remote maintenance service, main operation, and transfer of collected observation data. Recommendation of using network is the fiber optical or any faster network for transferring the weather observation data to the data center server or office. If the radar location does not have access to any fast network (up/download minimum 8 Mbps constantly) but can connect to a wireless network then use the internet just for remote operation and save the data to an external HDD.

  • Page 69: Storage Media

    It also must setup the Subnetwork and Subnet mask. Address space of subnetwork is indicated by subnet mask. Ex. Subnet mask is 255.255.255.0, which supports 254 addresses. Regarding IP address, 0 indicates the network itself, 255 is a broadcast address. In this case it can use xxx.xxx.xxx.1 to xxx.xxx.xxx.254 Router Switching Hub...

  • Page 70: Power Cords

    D. POWER CORDS Utility AC power standards for connector types and voltage levels vary from country. Figure D.1: Figure D.3: DPU-PS outlet Figure D.2: IEC60320 C13 to Type-B IEC 60320 C13 IEC60320 C14 Notice: Use the suitable replacement power cord that plug can fit to the local outlet. The local user has to prepare for local use.

  • Page 71: Teamviewer (Remote Control Management Tool)

    E. TEAMVIEWER (Remote control management tool) This software is the place allows using remote control via internet to operate DPU. If suddenly the radar’s facility is prohibited of using it, please uninstall this software. Furthermore, TeamViewer may behave as unauthorized access. E.1.

  • Page 72: Uninstallation

    E.2. Uninstallation Change the login user to the “Control” account. (See the password from APPENDIX A.2. in the “Operator’s manual”) If TeamViewer icon is in the task bar, click “Exit TeamViewer” to close the software. From the Start Menu, select Control Panel. Under Programs click the Uninstall a Program link.
  • Page 73 ･FURUNO Authorized Distributor/Dealer FURUNO ELECTRIC CO., LTD 9-52 Ashihara-cho, Nishinomiya, 662-8580, Japan Issued: July 2019 All rights reserved January 2020 Latest issued:...

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