Deif WSS 750 User manual

USER'S MANUAL AND INSTALLATION NOTE

WSS 750

Wind Sensor Static

• Mounting

• Connecting

• Replace an old sensor

• Technical specifications

• References

DEIF A/S · Frisenborgvej 33 · DK-7800 Skive

Tel.: +45 9614 9614 · Fax: +45 9614 9615

[email protected] · www.deif.com Document no.: 4189350059C

1. Introduction

1.1 About the WSS 750 wind sensor....................................................................................................................................................................................... 3

2. Unpacking instruction

2.1 How to unpack the product.................................................................................................................................................................................................. 4

2.2 Legal information and responsibility.............................................................................................................................................................................. 4

3. Mounting the wind sensor

3.1 Placing of the wind sensor................................................................................................................................................................................................... 5

3.2 Grounding and shield termination................................................................................................................................................................................... 7

3.3 Lightning protection.................................................................................................................................................................................................................7

3.4 Alignment of the wind sensor.............................................................................................................................................................................................7

4. Power supply

4.1 Power supply................................................................................................................................................................................................................................8

5. Cable connections

5.1 Cable types....................................................................................................................................................................................................................................9

6. The WSS 750 wind sensor cable connections

6.1 WSS cable connections.......................................................................................................................................................................................................10

7. Connecting WSS 750 to XDI-N

7.1 Connecting..................................................................................................................................................................................................................................11

8. Dimensions

8.1 Unit dimensions....................................................................................................................................................................................................................... 12

9. Troubleshooting a WSS 750 and WSDI-2 installation

9.1 Troubleshooting.......................................................................................................................................................................................................................13

10. Replace WSS or WSS-L with WSS 750

10.1 How to replace........................................................................................................................................................................................................................14

11. Replace old sensor type 879.3c with WSS 750

11.1 How to replace........................................................................................................................................................................................................................15

11.1.1 WSS 750 wind sensor connection to WSI interface box.............................................................................................................................. 15

11.1.2 WSI interface box connection to WSDI (WSDI-1) or 879 display............................................................................................................. 16

11.1.3 Grounding the wind sensor....................................................................................................................................................................................... 16

11.1.4 WSI interface box dimension....................................................................................................................................................................................17

11.2 Faults, causes and solutions..........................................................................................................................................................................................17

12. References and disclaimer

12.1 References to other documents................................................................................................................................................................................... 18

12.1.1 Disclaimer.........................................................................................................................................................................................................................18

USER'S MANUAL AND INSTALLATION NOTE 4189350059C UK Page 2 of 18

1. Introduction

1.1 About the WSS 750 wind sensor

This document provides guidelines for mounting and connecting the WSS 750 high performance static wind sensor.

The WSS 750 can be connected to old DEIF wind displays (like WSDI and 879) or XDI-N to form a complete wind system. The

sensor may also be used as a component in a larger system. In this case the system must have a free RS-485 or RS-422 input with

NMEA0183 capability.

The ultrasonic wind measuring system used in the WSS 750 is fast responding, has high precision and a robust design for

measuring the relative wind speed and wind direction on-board ships. The sensor is using three ultrasonic transducers arranged in a

triangle, transmitting ultrasonic burst of data from each sensor to the two other sensors in the triangle, and by measuring the time

difference caused by the wind passing the sensor, it is able to precisely calculate the wind speed and wind direction. The physical

size and the high transmitting power of the WSS 750 makes it able to measure very precisely in almost any weather conditions.

The WSS 750 comes with high power heating built inside each sensor head, which automatically activates when risk of icing occurs

during low temperatures (typically below 4 °C).

USER'S MANUAL AND INSTALLATION NOTE 4189350059C UK Page 3 of 18

2. Unpacking instruction

2.1 How to unpack the product

When unpacking the wind sensor, remove the transportation support foam that carries the cable and protects the sensor body. To

avoid bending or twisting the three sensor arms, do not remove the protection cap, until you have installed the WSS 750 in the mast.

The sensor is protected against ESD (static electricity), but it is recommended to avoid static discharge through the connection wires

during installation.

WSS 750 sensor with protection cap still mounted. WSS 750 sensor heads are sensitive ceramic elements. Do not

rotate, pull, strike, bend, scrape or touch the sensor heads.

2.2 Legal information and responsibility

DEIF takes no responsibility for installation or operation of the wind measuring system. If there is any doubt about how to install or

operate the WSS 750, the company responsible for the installation or the operation of the product must be contacted.

CAUTION

The WSS 750 wind sensor must not be opened! If opened anyway, the warranty will be lost.

USER'S MANUAL AND INSTALLATION NOTE 4189350059C UK Page 4 of 18

3. Mounting the wind sensor

3.1 Placing of the wind sensor

The wind sensor should be placed far from large objects that might influence the measuring results; however, in practice this is not

always possible on board a ship. The best result is achieved by placing the wind sensor at the top of a mast away from any large

superstructure and especially the funnel.

Placing the sensor just above the superstructure is disadvantageous, especially where the superstructure consists of wide side

faces, over which the wind is forced. This may result in turbulence, velocities and wind directions that are out of proportion to the

actual, undisturbed wind speed and wind direction.

In situations where it is not possible to mount the wind sensor away from disturbing substructures, we have provided solutions

where two wind sensors are installed with a switch to be able to use the best sensor in the given situation, e.g. mounted on each

side of the vessel free of turbulence when wind is coming from the side free from obstacles.

The wind sensor is intended for installation on a vertical mast or a horizontal beam using the universal mounting bracket supplied as

standard.

More information

See Dimensions in this document for information about dimensions and sizes.

DANGER!

Do not expose the cable connector to excessive torque when mounting the sensor. The connector tightening tools supplied

should be used according to the included instruction.

Mounting on a vertical mast or horizontal beam

The universal mounting bracket may also be mounted directly on a flat surface.

It is recommended to mount the 2 meter cable on the WSS 750 prior to installing it on the universal mounting bracket.

USER'S MANUAL AND INSTALLATION NOTE 4189350059C UK Page 5 of 18

When mounting the 2 meter cable with the preinstalled connector on the WSS 750 there is no need for a special mounting tool.

When the connector is marked with a symbol with a crossed out spanner no tool is required and the mounting instructions below

should be followed:

1. Loosen the 3 x M5 screws on the bottom of the WSS 750 with a 4 mm Allen key.

2. Rotate the metal ring to remove it (keep it for later use).

3. Push the cable connector in place ensuring the guiding pin on the connector is aligned.

4. Tighten the connector using the locking ring without any tools.

5. Insert the metal ring over the screws in the button and turn it a bit before tightening the three screws in the bottom of the WSS

750.

6. Mount the mast bracket on top of the mast.

a. Mount the supplied screw in the lower part of the sensor (2) and place it in the mast bracket.

b. Turn it slightly until the mounting screw is in the end position (3), tighten the screw to lock the sensor in place.

c. Mount the second screw in the mounting bracket opposite to the first screw (3) and tighten it firmly to secure the sensor.

d. Make sure that the senor is correctly aligned.

IMPORTANT

The stainless steel housing of the mounting bracket must be connected to earth (for example, the steel hull).

USER'S MANUAL AND INSTALLATION NOTE 4189350059C UK Page 6 of 18

3.2 Grounding and shield termination

Grounding of the sensor in the mast top is important for EMC protection and reliable operation.

The WSS 750 sensor shall be grounded either by making sure that the mast mount bracket has a good connection to ground via the

steel mast or alternatively, mount a ground wire on one of the screws on the sensor. This should be the only ground termination for

the sensor and its shielded cable.

It is important to firmly connect the cable shields in the sensor cable to the shield of the extension cable inside the installation box.

However, do not connect the shield of the extension cable going to the WSDI-2 wind indicator (or going to other systems inside the

ship) to anything!

3.3 Lightning protection

In order to protect the wind sensor and the personnel in the best possible way from lightning strokes, use a lightning rod installed

with the tip at least one metre above the wind sensor. The lightning rod must be properly grounded in compliance with all applicable

safety regulations. The wind sensor cable screen and the extension cable screen must be connected.

For further protection of the cable between the wind sensor and the connection box, as well as the installation cable between the

connection box and the interface box, it is recommended to use a metal conduit pipe. If the wind indicator (e.g. WSDI-2) is installed

in a metal panel, this panel has to be carefully connected to a good earth terminal.

3.4 Alignment of the wind sensor

To ensure that the display presents the precise wind direction relative to the ship, it is very important that the wind sensor is aligned

correctly.The arrow on the top of the sensor body and the sensor arm with the orange marking, must point ahead, towards the bow

of the ship, and the two arms on portside must be parallel with the centre axis of the ship.

USER'S MANUAL AND INSTALLATION NOTE 4189350059C UK Page 7 of 18

4. Power supply

4.1 Power supply

The WSS 750 system requires a 24-30 V DC, 2 A power supply.

It is recommended to use a separate galvanic isolated power supply to supply power to the wind measuring system, and the positive

and negative power supply connections must not be connected to ground (earth).

USER'S MANUAL AND INSTALLATION NOTE 4189350059C UK Page 8 of 18

5. Cable connections

5.1 Cable types

The wind sensor is supplied with a 2 m cable. The cable can be extended using the standard WSS extension cable (30 m, 40 m, 50

m or 100 m), and the IP66 connection box kit. These parts are normally ordered as accessories, but can be included in some of the

DEIF anemometer system packages.

For WSS 750 (heated, 35 W), the standard WSS extension cable (4 x 0.75 mm2 with shield) can be used up to 50 m.

Above 50 m, the following can be considered:

• Increase supply voltage to 28 to 30 V DC. This will work up to 100 m.

• Alternatively, increase the cable gauge for the power supply of the sensor/heating to at least 1.5 mm2. This will work up to 100 m.

If a longer cable is required, the cable gauge should be increased proportionally e.g. at least a 3 mm2 cable for 200 m cable length.

The maximum recommended cable length for data transfer is 300 m, with a maximum of 70 nF capacity between the signal

conductors.

An alternative installation cable could be UL2464 18AWG4C + AE, 4 x 0.75 mm2 screened or UL2464 18AWG4C + AE, 4 x 1.5.

USER'S MANUAL AND INSTALLATION NOTE 4189350059C UK Page 9 of 18

6. The WSS 750 wind sensor cable connections

6.1 WSS cable connections

Function WSS 750

WSS 750 cable

# 228260 wire colour

WSS extension cable

wire colours XDI terminal no. NX2 terminal

+24 V DC

operation 1 White

Red 4 -

+24 V DC

heating

Grey,

Green,

Pink (3 wires parallel connected)

0 V operation 11 Grey/Pink

Black 5 -

0 V heating 7

Blue,

Black,

Red,

Yellow (4 wires parallel connected)

RS-485 A

(COM2) 14 Red/Blue Orange - 11

RS-485 B

(COM2) 3 Brown Brown - 10

RS-485 termination - - - - ON

Cable shield Shield Shield Shield Not connected Not connected

DANGER!

No supply voltage must be present during installation of the wind sensor, as this may damage the sensor circuits.

Connection of other equipment

One standard NMEA0183 input for a VDR or integrated navigation system can be connected to terminal A and B. It is recommended

to use a NMEA-buffer or NCI-1 if more than one NMEA input has to be connected. (See also “WSDI-2, user’s manual and

installation note 4189350032 UK” on www.deif.com).

USER'S MANUAL AND INSTALLATION NOTE 4189350059C UK Page 10 of 18

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