SEVEN 3S-WD Wind Direction Sensor User Manual

Upon receiving the product, carefully check the package contents
to ensure everything is complete. Contact Seven Sensor Solutions if
any components are missing, damaged, or defective.

2.2. Site Requirements and Considerations

Each installation site is unique. Decide where to install the
sensor, ensuring it is not obstructed and considering local
topography. Place the sensor at least 10 times the height of any
obstruction away.

FAQ

Q: What are the different models of the Wind Direction
Sensor?

A: The Wind Direction Sensor is available in models 3S-WD,
3S-WD-I, and 3S-WD-MB with varying features for different
applications.

Q: How do I connect the sensor for data transmission?

A: The sensor can be connected to monitoring instruments, data
loggers, and other units via the serial RS485 interface with MODBUS
RTU protocol.

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3S-WD
Wind Direction Sensor
USER MANUAL

3S-WD
Wind Direction Sensor User Manual

USER MANUAL TABLE OF CONTENTS

1. Introduction

2. Wind Direction Sensors Installation

2.1. Unpacking and Control

2.2. Site Requirements and Considerations

2.3. Preparation of Materials to be Used in Installation

2.4. Installation

2.5. Inspection and Maintenance

3. Connections

3.1. Wind Direction Sensor (3S-WD-MB

3.2. 4-20 mA Wind Direction Sensor (3S-WD-I)

4. Configuration and Communication

4.1. 3S-WD Configuration Tool

4.2. Modbus RTU Specifications

4.2.1. Supported Bus Protocol

4.2.2. Supported Function Codes

4.2.2.1. Read Holding Registers (0x03)

4.2.2.2. Read Input Registers (0x04)

4.2.2.3. Read & Change Parameters (0x46)

4.2.2.4. Diagnotics (Restart Command) (0x08)

5. Specifications

5.1. Technical Specifications

6. Contact Details

Pinarcay OSB Mahallesi Organize Sanayi Tesisleri Teknokent Idare Binasi No: 7, D:1, 19100 Merkez / Corum / Türkiye · Phone: +90 364 230 1233 · Website: www.sevensensor.com · Email: sales@sevensensor.com

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3S-WD
Wind Direction Sensor User Manual
1. Introduction
The Wind Direction Sensor is part of the SEVEN meteorological sensor range, which includes professional and intelligent measuring sensors with a digital or analog interface for environmental and industrial applications such PV plants.

Figure 1-Wind Direction Sensor It is a measuring transmitter used for the measurement of the horizontal wind direction. The measured horizontal wind direction data are transmitted as analog or digital output signals to the data loggers and receiver units according to the input requirements. SEVEN products use reliable and high-quality components to provide accurate meteorological information in environmental and industrial applications. They are specially designed according to the requirements of PV plant monitoring systems.
Note: SEVEN reserves the right to make changes in this entire document without prior notice.
Models 3S-WD
Small and economical wind direction sensors with magnetic field output. They are ideal measurement transmitters with the best price/performance ratio for the standard requirements of industrial and environmental applications such as PV plants.
3S-WD-I
Wind direction sensors with analog output specially designed for advanced industrial applications and environmental conditions. The housings are made of seawater resistant alloy aluminium, making them extremely durable and resistant.
3S-WD-MB
Professional and intelligent measuring sensors with a digital interface for environmental and industrial applications such as PV plants. The measured value can be transmitted to monitoring instruments, data loggers and other receiving units via the serial RS485 interface with MODBUS RTU protocol.

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3S-WD
Wind Direction Sensor User Manual

2. Wind Direction Sensor Installation
It is suggested that the system be operated at ground level to make sure that all components are working properly prior to installation. A general diagram of the progress of the installation steps is given below.

Start

Unpacking and Control

Deciding Where to Install

End

Installation Process

Preparation of Materials to be Used

Settings Configuration

Electrical connection

Figure 2 Installation Process

2.1. Unpacking and Control
Upon receipt of the product, it must be carefully checked whether the package content is complete. Seven Sensor Solutions must be contacted if any of the components are missing, damaged or defective.

Qty: 1 a

Qty: 3

Wind Direction Sensor

M5x12 Six Corner Head Bolt

Figure 3 Mounting Structure Packing List

Note: Quantity and content of the received material may be different based on customer confirmed order.

2.2. Site Requirements and Considerations
Each site is different and has its own unique challenges. For this reason, the installation of the product may differ in each site. First of all, it should be decided where the product will be installed. The Wind Direction Sensor can be affected by obstructions and local topography. The Wind Direction Sensor should be placed no closer than 10 times the height of any obstruction.

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Wind Direction Sensor User Manual

Figure 4 Installation Site Selection
When the Wind Direction Sensor is to be mounted on a rooftop, it should preferably be mounted on the prevailing wind side of the building. When placing the Wind Direction Sensor on the mounting structure, attention should be paid to the north direction mark and it should be aligned to the north with the help of a compass.
2.3. Preparation of Materials to be Used in Installation
The materials needed during installation are provided by SEVEN. The user should only prepare the following hand tools and personal protective equipment.
Materials

Gloves

Meter

Drill

10-11 Wrench

Spirit Level

Digital Compass

Figure 5 Materials to be Used in Installation

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3S-WD
Wind Direction Sensor User Manual
2.4. Installation
3S-WD Wind Direction Sensor is designed with the Plug & Run principle. The installation can be easily completed by a qualified electrician by following SEVEN instructions.
Pipe Mounting Pipe Mounting

M5x12 Pipe

8-9 Wrench

First Step

Second Step

Third Step

The Wind Direction Sensor must be placed on the pipe parallel to the ground.

The M5 bolt should be screwed into the holes on the sides of the sensor.

The bolt should be tightened with an 8-9 mm wrench. The pipe must be fixed on a flat surface.

Pipe Mounting

Sheet Metal

M5x12

First Step
The mounting area must be level and parallel to the ground.

Second Step
The installation should be done using three M5x12 bolts.

8-9 Wrench
Third Step
The bolts should be tightened using an 8-9 mm wrench.

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2.5. Inspection and Maintenance
Fastener tightness and cable conditions, looking for damage, deterioration, or disconnection of sensors and electrical enclosures, evidence of moisture or vermin in enclosures, loose wiring connections, embrittlement of attachments and other potential problems, should be checked periodically.

Note: We recommend to use thread-locking fluid for fasteners.

According to IEC 61724-1:2021, the monitoring system should be inspected at least annually and preferably at more frequent intervals.
3. Connections
The supply voltage for the Wind Direction Sensors are 12 – 30 V DC. Operation with a supply voltage of 24 V is recommended. The communication and power cable of Wind Direction Sensor should be always laid separated from AC/DC cables.
Note: The installation and electrical connections of SEVEN sensors should be carried out by a qualified electrician.

3.1. Wind Direction Sensor (3S-WD-MB)
The Wind Direction Sensor has an electrically isolated, half-duplex, 2 wire RS485 interface for configuration, communication and the firmware update.

Wire Assignment for Power & Communication

RS485 A / Data (+)

Green

RS485 B / Data (-)

Yellow

Positive Supply Voltage

Brown

Supply Voltage Ground

White

green yellow brown
Figure 6 Wire Assignment for Power & Communication

Datalogger
RS485 A / Data (+)
RS485 A / Data (-)

V+

Power

Supply

V-

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Wind Direction Sensor User Manual

3.2. 4-20 mA Wind Direction Sensor (3S-WD-I)

Wire Assignment for Power & Communication

4-20 mA (+)

Green

4-20 mA (-)

Yellow

Positive Supply Voltage

Brown

Supply Voltage Ground

White

green yellow brown

Figure 7 Wire Assignment for Power & Communication

Enter the information for the 4-20 mA Sensor configuration in your datalogger as follows.
Running Parameter

Lower Threshold

0°

Upper Threshold

359°

Start mA

4 mA

End mA

20 mA

Datalogger
RS485 A / Data (+)
RS485 A / Data (-)

V+

Power

Supply

V-

4. Configuration and Communication
Once the Wind Direction Sensor has been installed and connected correctly, the sensor begins autonomously to take measurements. Attention must be paid to the following points:

A measurement request should be made to the Wind Direction Sensor with the 3S-WD Configuration Tool

and it should be checked whether it correctly operation in the site.

The Wind Direction Sensor must be aligned to the North in order to ensure correct wind measurement data.

If several Modbus Device are operated on a network, a unique device ID must be assigned to each device.

Note: The 3S-WD Configuration Tool is used for the 3S-WD-MB Wind Direction Sensor model. 3S-WD-I Wind Direction Sensor model do not need any configuration.
Follow SEVEN instructions to configure the Wind Direction Sensor on dataloggers.

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4.1. 3S-WD Configuration Tool
3S-WD Configuration Tool is a software tool for testing communication and adjusting Modbus parameters on the Wind Direction Sensor. The 3S-WD Configuration Tool can also be used to update the firmware of the Wind Direction Sensor.
A Windows® PC with a serial bus interface set as a serial COM port, 3S-WD Configuration Tool software, and USB to RS485 Converter are required for configuration and testing purposes.
Download the software 3S-WD Configuration Tool and install it on your computer. Download link is below. https://www.sevensensor.com/files/d/s/3S-WD-Configuration_Tool.zip
4.2. Modbus RTU Specifications 4.2.1. Supported Bus Protocol
The Wind Direction Sensor is equipped with an RS-485 communication port that supports Modbus RTU commands. The Wind Direction Sensor can be configured to operate in different communication parameters. The table that follows describes each supported bus protocol.

Baud Rate Parity Stop Bit Factory Default

1200, 2400, 9600, 19200, 38400 None, Even, Odd 1, 2 (only at None parity) 9600 Baud, 8N1, address: 1

4.2.2. Supported Function Codes
The Wind Direction Sensor supports a specific subset of Modbus RTU commands. The table that follows lists each supported function code.

0x03 0x04 0x46 0x08

Read Holding Registers Read Input Registers Read & Change Parameters Diagnostics

Note: All checksums of the Modbus protocol are omitted in this document. These checksums must always be calculated and sent during communication.

4.2.2.1. Read Holding Registers (0x03)

Master Request: Address Function Code Start Register End Register

1 Byte 1 Byte 2 Byte (Big Endian) 2 Byte (Big Endian)

1 to 247 0x03 see register table below see register table below

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Wind Direction Sensor User Manual

Slave Response: Address Function Code Number of Bytes Data

1 Byte 1 Byte 1 Byte 2 Byte x N (Big Endian)

1 to 247 0x03 0 to 255 (2xN) N = Number of Registers see register table below

Holding Register Map
The Wind Direction Sensor holding register map is based on the “SunSpec Alliance” communication standards.

Start 40000 40002 40003 40004 40020 40036 40044 40052 40068
40075
40100 40101
40199

End 40001 40002 40003 40019 40035 40043 40051 40067 40068
40075
40100 40101
40199

Value SunSpec ID SunSpec Device ID SunSpec Length Manufacturer Model Hardware Version Software Version Serial Number Device ID
Wind Direction
End of SunSpec Block Length
Modbus ID Write Register

Type

Units

uint32

N/A

uint16

N/A

uint16

Registers

String (32)

N/A

String (32)

N/A

String (16)

N/A

String (16)

N/A

String (32)

N/A

uint16

N/A

Sunspec Device Model Measurement Registers

int16

End of Block Registers

uint16

N/A

uint16

Registers

Device Address Read/Write Register

uint16

N/A

Scale Factor N/A N/A N/A N/A N/A N/A N/A N/A N/A
0
N/A 0
N/A

Constant “SunS” 0x0001
65 “SevenSensor”
“3S-WD” “1.1” “2.0”
“23.12.345.65.0013” 1
Measured
0xFFFF 0
1

4.2.2.2. Read Input Registers (0x04)

Master Request:

Address

1 Byte

Function Code

1 Byte

Start Register

2 Byte (Big Endian)

End Register

2 Byte (Big Endian)

Slave Response: Address Function Code Number of Bytes Data

1 Byte 1 Byte 1 Byte 2 Byte x N (Big Endian)

1 to 247 0x04 see register table below see register table below
1 to 247 0x04 0 to 255 (2xN) N = Number of Registers see register table below

Input Register Map A common input register map has been created for all SEVEN Modbus devices. All data marked in bold in the common input register map below are defined for Wind Direction Sensor.

Note: Values marked as “raw data” are for information only and should not be used for serial applications.

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The following Modbus data marked in bold can be read individually or in blocks.

ID-Dec 30019

ID-Hex 0x13

Wind Direction

Value

Range
0…359°

Resolution
1

Additionally, the following internal data marked in bold can be read individually or in blocks.

ID-Dec 30060 30061 30117

ID-Hex 0x3C 0x3D 0x75

Hardware Version Software Version Wind Direction Enable Selection

Value

Range
Manufacturer Parameters Read Only

4.2.2.3. Read & Change Parameters (0x46)

Sub Function (0x04): Write Device Address

Master Request:

Address

1 Byte

Function Code

1 Byte

Sub Function Code

1 Byte

New Address

1 Byte

Slave Response: Address Function Code Sub Function Code New Address

1 Byte 1 Byte 1 Byte 1 Byte

Sub Function (0x06): Write Communication Parameters

Master Request:

Address

1 Byte

Function Code

1 Byte

Sub Function Code

1 Byte

New Baud Rate

1 Byte

New Parity / Stop Bit

1 Byte

Slave Response: Address Function Code Sub Function Code New Baud Rate New Parity / Stop Bit

1 Byte 1 Byte 1 Byte 1 Byte 1 Byte

1 to 247 0x46 0x04 1 to 247
1 to 247 0x46 0x04 1 to 247
1 to 247 0x46 0x06 0 to 3, see table below 0 to 3, see table below
1 to 247 0x46 0x06 0 to 3, see table below 0 to 3, see table below

Note: When the “Write Communication Parameters” command is used, the “Write Device Address” command must also be used before the restart communication command.

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Wind Direction Sensor User Manual

Communication Parameter Settings Parameter changes will take effect after restart of the sensor by power on reset or restart communication command.

Baud Rate 1200 2400 9600 19200 38400

Value 1 2 3 4 5

Parity / Stop Bit None/1 None/2 Odd Even Even

Value 1 2 3 4 5

Sub Function (0x07): Read Hardware & Software Versions Master Request:

Address

1 Byte

Function Code

1 Byte

Sub Function Code

1 Byte

1 to 247 0x46 0x07

Slave Response: Address Function Code Sub Function Code Hardware Version Software Version

1 Byte 1 Byte 1 Byte 2 Byte (Little Endian) 2 Byte (Little Endian)

1 to 247 0x46 0x07 0 to 65535 0 to 65535

Sub Function (0x08): Read Serial Number – Production Date – Calibration Date Master Request:

Address

1 Byte

1 to 247

Function Code

1 Byte

0x46

Sub Function Code

1 Byte

0x08

Slave Response: Address Function Code Sub Function Code

1 Byte 1 Byte 1 Byte

1 to 247 0x46 0x08

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Wind Direction Sensor User Manual

4.2.2.4. Diagnotics (Restart Command) (0x08)
Master Request:

Address

1 Byte

Function Code

1 Byte

Restart Code

4 Byte

1 to 247 0x08 0x00000000

Slave Response: Address Function Code Restart Code

1 Byte 1 Byte 4 Byte

1 to 247 0x08 0x00000000

5. Additional Documents and Software
The following documents and software can be downloaded from www.sevensensor.com or requested from SEVEN Sensor Solutions.

User Manual Datasheet 3S-WD Configuration Tool
Firmware

This document Wind Direction Sensor Brochure Windows® software for testing, firmware updates and configuration of the device Current device firmware

6. Contact Details
Please feel free to contact us if you face any difficulties during installation or configuration.

Address
Phone Email Website

Pinarcay OSB Mahallesi Organize Sanayi Tesisleri Teknokent Idare Binasi No: 7, D:1, 19100 Merkez / Corum / Turkey +90 530 889 8019 sales@sevensensor.com www.sevensensor.com

Revision 0.0 / Created 26.07.2024

Documents / Resources

SEVEN 3S-WD Wind Direction Sensor [pdf] User Manual
3S-WD-I, 3S-WD Wind Direction Sensor, 3S-WD, Wind Direction Sensor, Direction Sensor, Sensor

References

User Manual

SEVEN 3S-WD Wind Direction Sensor User Manual

3S-WD Wind Direction Sensor

Specifications

Technical Specifications

Product Usage Instructions

1. Wind Direction Sensor Installation

2.1. Unpacking and Control

2.2. Site Requirements and Considerations

FAQ

Q: What are the different models of the Wind Direction
Sensor?

Q: How do I connect the sensor for data transmission?

Documents / Resources

References

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