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Dyacon Mi-Met WSD-1, Manual

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DYACON

®

, Inc

Notices

© Copyright 2013 Dyacon, Inc.

All Rights Reserved

This publication is protected by copyright and all rights are reserved. Any reproduction of this 
manual, in part or in full, by any means, mechanical, electronic, or otherwise, is strictly prohibited
without express written permission from 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.

Trademark Acknowledgments

Dyacon® is a registered trademark of Dyacon, Inc.

Mi-Met

TM

,  Mi-Met WSD-1

TM

, WSD

TM

 are trademarks of Dyacon, Inc.

All other trademarks are property of their respective owners.

Mi-Met Manufacturer

Dyacon, Inc.
220 West 300 South
Newton, UT 84327
USA

Mi-Met WSD-1 Manual

4

Summary of Contents for Mi-Met WSD-1

Page 1: ...Mi Met WSD 1 Wind Speed Direction Sensor Manual 57 6017 Rev A Preliminary November 2013 ...

Page 2: ...ories 10 ASSEMBLY INSTRUCTIONS 11 Required Tools 11 Assembly 11 Mounting 11 Wiring 13 MODBUS 14 Modbus Summary 14 Modbus Utilities 14 Modbus Commands 15 Data Format 18 Wind Speed Format 18 Wind Direction Format 18 Conversions and Calculations 18 Speed Unit Conversions 18 THEORY OF OPERATION 19 Wind Direction Sensing 19 Wind Speed Sensing 19 POWER SAVING 20 Power Down 20 SOFTWARE 21 Introduction 21...

Page 3: ...DYACON Inc Parts List 22 Exploded View 23 Repair and Calibration 24 SPECIFICATIONS 25 MODBUS APPENDIX 26 REVISION HISTORY 28 Mi Met WSD 1 Manual 3 ...

Page 4: ...he 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 Trademark Acknowledgments Dyacon is a registered trademark of Dyacon Inc Mi MetTM Mi Met WSD 1TM WSDTM are trademarks of Dyacon Inc All other trademarks are property of the...

Page 5: ...prepaid Dyacon will ship the repaired or replaced item at its Dyacon s expense using the preferred shipment method of 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 ...

Page 6: ...s 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 Mi Met WSD 1 Manual 6 ...

Page 7: ... co website Technical Support Contact Information Dyacon Inc 220 West 300 South Newton UT 84327 Phone 435 753 1002 Email support Mi Met co Internet www Mi Met co Normal business hours are from 8 00 am to 5 00 pm Mountain Time Zone GMT 0700 Phone Email Support If you need technical support via the phone or email please have the following information ready Product name model number and serial number...

Page 8: ...ty 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 Minimize installation hardware and complexity The mounting adapter fits over 3 4 pipe or can be used with 1 structural pipe fitti...

Page 9: ...o utilize the WSD 1 you will need the following 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 9 Image 1 As Shipped ...

Page 10: ... 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 10 ...

Page 11: ...Insert and tighten the axis screw Mounting The mounting adapter is designed to fit on a 3 4 schedule 40 pipe 1 06 26 9 mm OD It may also be mounted using 1 1 315 structural pipe fittings 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 I...

Page 12: ...ew to north 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 12 Image 2 Internal and external cable route North direction indicator North ...

Page 13: ...d sharp edges or unsupported horizontal spans Wiring WSD 1 ships with shielded 4 conductor outdoor rated instrumentation cable Red 5 to 24 VDC Orange A Brown B Black Electrical ground Unshielded Drain earth ground Mi Met WSD 1 Manual 13 Image 3 First cable tie position First Cable Tie Mi Met Tripod Quick release Button Image 4 Wired for Mi Met Control Module ...

Page 14: ...twisted pair cables The wide operating voltage range and low power of WSD 1 allows for power to be injected over the same data cable without concern for excess voltage drop Two wires for power and two for data For example 1200 m 4000 ft of Cat 5 cable 24 AWG will result in a voltage drop of less than 0 2 V at an operating current of 2 mA WSD 1 ships standard with 20 ft 5 m of non paired outdoor ra...

Page 15: ...s and Exception Codes Function Description Supported Error and Exception codes 3 Read Holding Register 0x83 01 02 03 04 4 Read Input Register 0x84 01 02 03 04 6 Write Single Register 0x86 01 02 03 04 16 Write Multiple Registers 0x90 01 02 03 04 See Error Code table below for more information Sensor Data Requests Address Register Access Type Response Range Data Type Description 200 201 Read 0 to 15...

Page 16: ...ssible Address Register Access Type Default Data Type Description 110 111 112 Read Write 1 32 bit Single precision Float Speed Slope 112 113 114 Read Write 0 32 bit Single precision Float Speed Offset 114 115 116 Read Write 0 32 bit Single precision Float Direction Offset 32 bit single precision floating point IEEE 754 numbers are restricted to about 7 significant decimal figures 32 bit values are...

Page 17: ...e requested action System Status Codes System status codes are unique to the sensor not Modbus protocol exceptions System codes are bit codes representing internal functional errors A clear 0 bit indicates no errors were detected A set 1 bit indicates an error Contact customer support if system errors are encountered Bit Name 0 Wind direction sensor error 1 Wind direction sensor error 2 Wind direc...

Page 18: ...ement units The following conversion values can be performed by the host device Wind Speed Format The measured wind speed range is 0 0 to 50 0 m s The Modbus data range is 0 to 500 Wind Speed m s ModbusData 10 Wind Direction Format The measured wind direction range is 0 to 359 9 The Modbus data range is 0 to 3599 Wind Direction ModbusData 10 Conversions and Calculations Unit conversion may also ne...

Page 19: ...ind speed value is updated with each switch closure or half turn of the anemometer A deceleration algorithm is used to ensure the running average is accurate as the wind speed approaches zero Architecture A range of low power strategies are employed in WSD 1 to ensure optimal low power while providing reliable and accurate measurements across the full environmental range A low power microcontrolle...

Page 20: ...an 10 s The time required from power up to first character is less than 100 ms Modbus frames sent prior to this may not be received by the sensor 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 u...

Page 21: ...nges Boot Loader WSD 1 firmware may be updated in the field through the RS 485 serial data lines Required Equipment RS 485 to USB or RS 232 converter 12 VDC power supply Mi Met Boot Loader PC utility Procedure 1 Disconnect WSD 1 from the host equipment 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...

Page 22: ... 6030 O RING 1 in OD 0 875 in ID Silicone 17 6032 SCREW Set M4 x 6mm Skt Knurl Cup 18 8 SS 17 6035 SCREW M3 x 10 mm Skt Cap 18 8 SS 40 6003 SWI Reed MK20 1 B 49 6026 CABLE Outdoor 4 cond 24 AWG Foil Shield PVC PVC Gray 51 6012 05 SUBASSY Vane Axle 51 6013 10 SUBASSY Anemometer Cup and Spoke 51 6014 08 SUBASSY Anemometer Hub 51 6017 09 SUBASSY Bell Housing 52 6010 PCBA Rotation Sensor Wind Sensor 1...

Page 23: ... 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 23 01 01 02 02 03 03 04 04 06 06 05 05 08 08 07 07 09 09 10 10 11 11 ...

Page 24: ... the package Include a detailed description of the problem and any to be performed on the returned unit An RMA number may be requested by phone or email Phone 1 435 753 1002 Email support Mi Met co Normal business hours are 8 am to 5 pm Mountain Time Zone GMT 0700 Street Address Dyacon Inc 220 West 300 South Newton UT 84327 US Mail Addresses Dyacon Inc PO Box 33 Newton UT 84327 Mi Met WSD 1 Manual...

Page 25: ...teel Overall WxDxH 15 2 x 32 x 25 5 cm 6 x 12 5 x 10 in Cable 4 conductor 24 AWG stranded Foil Shield w drain wire Outdoor rated cable Weight w Cable 675 g 23 8 oz Weight w o Cable 500 g 17 6 oz OEM Options Custom anodizing color red black blue or clear DATA Protocols Modbus slave SDI 12 option value added resellers Min Request Period 20 ms Modbus at 19200 bps OEM Options Custom packet structure T...

Page 26: ...DYACON Inc Mi Met WSD 1 Manual 26 ...

Page 27: ...starting at register number 202 Detailed protocol information is available at www modbus org Request Frame The following is an example of a read of the wind speed and wind direction with one request Field Name Length bytes Function Example Data Slave Address 1 Device address 0x01 Function 1 Read holding register 0x03 Register Start Address 2 Sensor address 201 0x00C9 Quantity of Registers 2 Number...

Page 28: ...me Length bytes Function Example Data Slave Address 1 Device address 0x01 Error Code 1 Error code value 0x83 Exception Code 1 Error code values 01 02 03 04 0x01 CRC 2 Error check 0xF080 TX String 01 83 01 80 F0 Mi Met WSD 1 Manual 28 ...

Page 29: ...DYACON Inc Revision History Rev Description Author Date A Prelim Initial Release E Bodrero 19NOV2013 Mi Met WSD 1 Manual 29 ...

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