Dyacon Mi-Met WSD-1 Manual

Wind speed direction sensor

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Mi-Met
WSD-1
(Wind Speed Direction)
Sensor
57-6017 Rev A - Preliminary
November 2013

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Summary of Contents for Dyacon Mi-Met WSD-1

  • Page 1 Mi-Met WSD-1 (Wind Speed Direction) Sensor 57-6017 Rev A - Preliminary November 2013...
  • Page 2: Table Of Contents

    , Inc Contents NOTICES................................4 © Copyright 2013 Dyacon, Inc......................4 Mi-Met Manufacturer.........................4 Declarations............................5 Warranty Information.........................5 WSD-1 INTRODUCTION..........................7 Scope.................................7 Technical Support............................7 Contact Information..........................7 Phone / Email Support........................7 PRODUCT OVERVIEW..........................8 Product Description...........................8 What Do You Get?............................9 What You Need............................9 Accessories..............................10 ASSEMBLY INSTRUCTIONS........................11 Required Tools............................11 Assembly..............................11...
  • Page 3 , Inc Parts List..............................22 Exploded View............................23 Repair and Calibration..........................24 SPECIFICATIONS............................25 MODBUS APPENDIX..........................26 REVISION HISTORY..........................28 Mi-Met WSD-1 Manual...
  • Page 4: Notices

    Dyacon, Inc. The information in this manual has been carefully checked and is believed to be accurate. However, Dyacon, Inc. assumes no responsibility for any inaccuracies that may be contained in this manual. All information is subject to change.
  • Page 5: Declarations

    Dyacon. Disclaimer of Warranties The warranties set forth above are in lieu of all other warranties of Dyacon, whether written, oral, or implied. Dyacon makes no warranties regarding its products (hardware or software), including without limitation warranties as to merchantability, fitness for a particular purpose, any warranty arising from course of performance, course of dealing or usage of trade whether any of the foregoing warranties are either expressed or implied.
  • Page 6 , Inc Updates or Modifications Dyacon shall be under no obligation to update or modify its products except as herein noted to correct defects or errors. Customer agrees that all representation and warranties contained herein shall be immediately null and void in the event of any incorrect installation, modification, alteration, or change in or to any product affected by or on behalf of customer except for a change made by Dyacon or other direct supervision thereof.
  • Page 7: Wsd-1 Introduction

    WSD or “wind sensor”. This document includes installation instructions, technical specifications, electrical requirements, and data protocol information. Some aspects of the equipment operation may be covered in other documents. Please contact Dyacon or visit the Mi-Met.co website. Technical Support Contact Information Dyacon, Inc.
  • Page 8: Product Overview

    An SDI-12 version of WSD-1 is available to value-added resellers (VARs). Additional firmware and customization options are also available to VARs. Contact Dyacon, Inc. for more information. Design Objectives The design for WSD-1 was designed to meet the following objectives.
  • Page 9: What Do You Get

    3/4” diameter mounting pipe (aluminum, steel, or PVC, 1.04 inch (26.7 mm) actual outer diameter). Or, a 1” structural pipe fitting. 5 to 24 VDC power supply and Modbus host device.* * Not required if using the WSD-1 with a Mi-Met control module. Mi-Met WSD-1 Manual...
  • Page 10: Accessories

    Structural Pipe Fittings Standard structural pipe fittings for 1” schedule 40 pipe are available from hardware suppliers and manufacturers. Hollaender Nu-Rail www.nurail.com J.C. Denier www.denierco.com Easyfit www.easyfit.com Diamond Aluminum www.diamond-aluminum.com KEE Systems www.keesystems.com McMaster-Carr www.mcmaster.com Grainger www.grainger.com Mi-Met WSD-1 Manual...
  • Page 11: Assembly Instructions

    WSD-1 fits on the end of the Mi-Met tripod and snaps into the locking button without any tools. (See Image 3.) The data cable may be passed through the center of the mounting pipe or outside of the mounting pipe. (See Image 2.) Mi-Met WSD-1 Manual...
  • Page 12 For convenience, an initial north position is calibrated at the factory. However, the north position can easily be set to any position using a Modbus instruction. When WSD-1 is used with the Mi-Met controller, north is set with a simple button press. 3. Tighten the locking screw. Mi-Met WSD-1 Manual...
  • Page 13: Wiring

    Image 3: First cable tie position. Wiring WSD-1 ships with shielded, 4-conductor, outdoor-rated instrumentation cable. 5 to 24 VDC Orange A (+) Brown B (-) Black Electrical ground Unshielded Drain/earth ground Image 4: Wired for Mi-Met Control Module Mi-Met WSD-1 Manual...
  • Page 14: Modbus

    Modbus is a simple protocol that can be transmitted over several modes including TCP/IP, TIA- 232-A (RS-232), TIA-485-A (RS-485), TCP/IP, SMS, and many others. Mi-Met WSD-1 uses Modbus-RTU over RS-485. WSD-1 is a slave device and must be connected to a host device, such as a programmable logic controller (PLC), host computer with an RS-485 adapter and Modbus software, or to the Mi-Met weather station control module.
  • Page 15: Modbus Commands

    System Status† Read 0 to 500 16-bit Signed Int Wind speed (m/s) Read 0 to 3599 16-bit Signed Int Wind direction (°) † See System Status Code section below. * See Data Format section for numeric conversions. Mi-Met WSD-1 Manual...
  • Page 16: Calibration Settings

    Error Codes The following error and acknowledgment codes are supported by the WSD-1. Not all codes are relevant to each request or command. Supported command error codes are listed for each command. Mi-Met WSD-1 Manual...
  • Page 17 Contact customer support if system errors are encountered. Name Wind direction sensor error Wind direction sensor error Wind direction sensor error Wind direction sensor error Hex Values 0x0000 – No Errors 0x0001 to 0x000F – Wind direction sensor error Mi-Met WSD-1 Manual...
  • Page 18: Data Format

    Unit conversion may also need to be done by the host device in order to present the data in the convention preferred by equipment users. Speed Unit Conversions Speed (mile/hr) = Speed (m/s) * 2.23694 Speed (knots) = Speed (m/s) * 1.943844 Speed (km/h) = Speed (m/s) * 3.6 Mi-Met WSD-1 Manual...
  • Page 19: Theory Of Operation

    The microcontroller also manages the Modbus protocol and other internal functions, such as EEPROM interface and bootloader functions. The microcontroller utilizes low-power strategies, leveraging multiple low power modes and optimized code execution. Mi-Met WSD-1 Manual...
  • Page 20: Power Saving

    The wind speed report is a running average. In slow wind conditions, this can require up to 10 s before valid data is present, refer to the Theory of Operation section for more information. Wind speed measurements requested within 10 second following power up may be incorrect when slow wind speed conditions are present. Mi-Met WSD-1 Manual...
  • Page 21: Software

    2. Connect the WSD-1 to the PC with the RS-485 converter. 3. Connect WSD-1 to a 12 VDC power source. 4. Run the Mi-Met Boot Loader Utility. Configure the settings and press “Load.” 5. Watch for program completion. 6. Disconnect and return the WSD-1 to service. Mi-Met WSD-1 Manual...
  • Page 22: Repair And Service

    PCBA, Rotation Sensor, Wind Sensor 1 52-6013 PCBA, Processor, RS485, Wind Sensor 1 75-6013 Mounting Adapter 75-6016 Anemometer Axle 75-6018 Vane Counter Weight 75-6019 Vane Fin 75-6021 Vane Hub 75-6023 Vane Stem 75-6053 Seal Disk 75-6012 Vans Axle Housing Mi-Met WSD-1 Manual...
  • Page 23: Exploded View

    , Inc Exploded View The image below shows the mechanical sub-assemblies of the wind sensor. Bearings, circuit board assemblies, and loose hardware are not show. Mi-Met WSD-1 Manual...
  • Page 24: Repair And Calibration

    Repair and Calibration Return Authorization All equipment sent to Dyacon for calibration, warranty, or service should have a return material authorization (RMA) number indicated on the outside of the package. Include a detailed description of the problem and any to be performed on the returned unit.
  • Page 25: Specifications

    -30°C to 60°C Operating Temperature -40°C to 80°C Storage Temperature ACCESSORIES Mi-Met Tripod-1 Tripod Structural Fittings 1” coupler 1” crossover Tripod mast segment for attachment Mast to mounting structure. † Continuous full run mode, reading data once per second. Mi-Met WSD-1 Manual...
  • Page 26: Modbus Appendix

    , Inc Mi-Met WSD-1 Manual...
  • Page 27 Number (N) of data bytes. 0x04 Register Data Register data, upper byte first. Register 202 (Speed): 72 (7.2 m/s) 0x0048 Register 203 (Direction): 3472 (347.2°) 0x0D90 Error check. 0xD965 RX String: 01 03 04 00 48 0D 90 65 D9 Mi-Met WSD-1 Manual...
  • Page 28: Revision History

    Field Name Length Function Example (bytes) Data Slave Address Device address. 0x01 Error Code Error code value. 0x83 Exception Code Error code values (01, 02, 03, 04) 0x01 Error check 0xF080 TX String: 01 83 01 80 F0 Mi-Met WSD-1 Manual...
  • Page 29 , Inc Description Author Date Initial Release E. Bodrero 19NOV2013 Prelim Mi-Met WSD-1 Manual...

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