Lufft VENTUS-USB User manual

© G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany. We reserve the right to make technical changes without
notice.

Operating Manual V16/05.2016 ventus
G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany 3
Contents
1Please Read Before Use.............................................................................................................................................5
1.1 Symbols Used .....................................................................................................................................................5
1.2 Safety Instructions...............................................................................................................................................5
1.3 Designated Use...................................................................................................................................................5
1.4 Incorrect Use.......................................................................................................................................................5
1.5 Warranty..............................................................................................................................................................5
1.6 Brand Names.......................................................................................................................................................5
2Scope of Supply..........................................................................................................................................................6
3Order Number..............................................................................................................................................................6
4Accessories.................................................................................................................................................................6
5Additional Documents and Software.........................................................................................................................6
6Equipment Description...............................................................................................................................................7
6.1 Wind....................................................................................................................................................................7
6.2 Virtual Temperature.............................................................................................................................................8
6.3 Air Pressure.........................................................................................................................................................8
6.4 Heating................................................................................................................................................................8
7Generation of Measurements.....................................................................................................................................9
7.1 Current Measurement (act)..................................................................................................................................9
7.2 Minimum and Maximum Values (min and max)...................................................................................................9
7.3 Average Value (avg)............................................................................................................................................9
7.4 Vectorial Average Value (vct)..............................................................................................................................9
8Measurement Output................................................................................................................................................10
8.1 Virtual Air Temperature......................................................................................................................................10
8.2 Heating Temperature.........................................................................................................................................10
8.3 Air Pressure.......................................................................................................................................................10
8.4 Wind Speed.......................................................................................................................................................11
8.5 Wind Direction...................................................................................................................................................11
8.6 Wind Measurement Quality ...............................................................................................................................12
8.7 Status Information .............................................................................................................................................12
9Installation.................................................................................................................................................................13
9.1 Fastening...........................................................................................................................................................13
9.2 North Alignment.................................................................................................................................................14
9.3 Selecting the Installation Location .....................................................................................................................15
10 Connections ..............................................................................................................................................................17
10.1 Supply Voltage ..................................................................................................................................................18
10.2 RS485 Interface.................................................................................................................................................18
10.3 Analog Interface Circuits....................................................................................................................................18
10.4 Control line ........................................................................................................................................................19
10.5 Connection to ISOCON-UMB (8160.UISO).......................................................................................................20
10.6 Use of surge protector (8379.USP-V)................................................................................................................20
10.7 SDI12 Connection .............................................................................................................................................21
11 Commissioning.........................................................................................................................................................22
12 Configuration and Test.............................................................................................................................................23
12.1 Factory Settings.................................................................................................................................................23
12.2 Configuration with the UMB-Config-Tool ...........................................................................................................23
12.3 Sensor Selection ...............................................................................................................................................23
12.4 Function Test with UMB-Config-Tool.................................................................................................................27
12.5 Equipment Heating............................................................................................................................................28
13 Firmware Update.......................................................................................................................................................29
14 Maintenance ..............................................................................................................................................................29
15 Technical Data...........................................................................................................................................................30

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15.1 Measuring Range / Accuracy............................................................................................................................ 31
15.2 Drawing............................................................................................................................................................. 32
32
16 EC Certificate of Conformity ................................................................................................................................... 33
17 Fault Description...................................................................................................................................................... 35
18 Disposal .................................................................................................................................................................... 36
18.1 Within the EC.................................................................................................................................................... 36
18.2 Outside the EC ................................................................................................................................................. 36
19 Repair / Corrective Maintenance............................................................................................................................. 36
19.1 Technical Support............................................................................................................................................. 36
20 Appendix................................................................................................................................................................... 37
20.1 Channel List Summary...................................................................................................................................... 37
20.2 Channel List Summary per TLS2002 FG3........................................................................................................ 38
20.3 Communication in Binary Protocol.................................................................................................................... 39
20.4 Communication in ASCII Protocol..................................................................................................................... 42
20.5 Communication in NMEA Protocol.................................................................................................................... 44
20.6 Communication in SDI-12 Mode....................................................................................................................... 55
20.7 Communication in Modbus Mode ..................................................................................................................... 69
21 List of Figures........................................................................................................................................................... 76
22 Keyword Index.......................................................................................................................................................... 77

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1 Please Read Before Use
1.1 Symbols Used
Important information concerning potential hazards to the user
Important information concerning the correct operation of the equipment
1.2 Safety Instructions
Installation and commissioning must be carried out by suitably qualified specialist
personnel only.
Never take measurements on or touch live electrical parts.
Pay attention to the technical data and storage and operating conditions.
1.3 Designated Use
The equipment must only be operated within the range of the specified technical
data.
The equipment must only be used under the conditions and for the purposes for
which it was designed.
The safety and operation of the equipment can no longer be guaranteed if it is
modified or adapted.
1.4 Incorrect Use
If the equipment is installed incorrectly
It may not function.
It may be permanently damaged.
Danger of injury may exist if the equipment is allowed to fall.
If the equipment is not connected correctly
It may not function.
It may be permanently damaged.
The possibility of an electrical shock may exist.
1.5 Warranty
The warranty period is 12 months from the date of delivery. The warranty is forfeited if the
designated use is violated.
1.6 Brand Names
All brand names referred to are subject without limitation to the valid trademark and
ownership rights of the respective owner.

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2 Scope of Supply
Equipment
Connection Plan
3 Order Number
8371.UMT ventus -UMB (metal)
8371.UA01 V200A-UMB (plastics)
Wind direction
Wind speed
Virtual temperature
4 Accessories
ISOCON-UMB
8160.UISO
Surge protection
8379.USP-V
Power supply unit
Recommended power supply unit:
Phoenix contact
2866323 TRIO-PS/1AC/24DC/10
Connector
8371.UST1 or
Amphenol C091 31D008 101 2
Connector cable
Recommended cable:
8371.UK015 15m
8371.UK050 50m
5 Additional Documents and Software
You can download the following documents and software via the Internet at www.lufft.com.
Operating Manual
This document
UMB-Config-Tool
Windows®software for testing, firmware updates and
configuration of UMB devices
UMB Protocol
Communication protocol for UMB devices
Firmware
The current device firmware

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Figure 1:
Measurement
Sections
6 Equipment Description
ventus is a seawater-resistant wind meter which in addition to determining wind direction and
wind speed is also capable of calculating virtual temperature.
The equipment is connected by way of an 8 pole screw connector.
The measured values can be requested over a variety of interfaces:
- RS485 interface in half or full duplex
oUMB binary protocol
oUMB ASCII protocol
oNMEA protocol
oSDI-12 protocol
oModbus-RTU and Modbus-ASCII protocols
- Analog data output of 2 adjustable channels with 4-20 mA, 0 –10V or (channel 1
only) as frequency 2 –2000Hz
During commissioning, configuration and measurement polling takes place using the UMB-
Config-Tool (Windows®PC software).
6.1 Wind
The measurement principle implemented for the Ventus-UMB is based on the
measurement of the time of flight of ultrasonic pulses in air.
The measurement setup includes two measurement sections, arranged at an angle of 90°,
with two ultrasonic transceivers each. The measurement sections are activated in turn and
the time of flight of the ultrasonic pulses between the respective transmitter and receiver is
measured. Within one measurement cycle each of the ultrasonic heads will work once as
transmitter and once as receiver.

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Figure 2: Influence of
Wind on Time of
Flight
When measuring in still air all times of flight of one cycle will be equal on average.
If however an air flow is passing through the sensor, the ultrasonic pulse packet moving in
the direction of the air flow will be accelerated, while the packet moving in opposite
direction to the air flow will be decelerated. That means, the time of flight in the direction of
wind will be shorter, while that in direction opposite to the wind direction will be longer.
The orthogonal arrangement of the measurement sections allows to evaluate the x and y
components (resp. North-south and east-west components) of the air flow.
Basically the sonic velocity, and with it the time of flight of the ultrasonic pulse packets, will
be influenced by air temperature and air humidity. The alternating measurement (north-
>south / south->north, west->east / east->west) compensates this influence.
The differences of the time of flight are averaged over a number of measurements, then
the wind speed and wind direction is evaluated from the average.
The design of the sensor head protects, to a large extend, the measurement sections
against rain and snow. The heating of the sensor prevents icing of the ultrasonic
transceivers.
The aerodynamic design of the sensor head minimizes influences on the wind flow.
Remaining deviations are evaluated during device calibration so that they are
compensated during the calculation of wind speed and wind direction.
6.2 Virtual Temperature
Due to the physical relationship between the velocity of propagation of sound and the air
temperature, the approximate ambient temperature can be determined with the aid of
ultrasound sensors.
6.3 Air Pressure
The air pressure is measured by an integrated air pressure sensor
6.4 Heating
Ventus is heated for winter operation.
The measurement section is heated from top and bottom (V200A-UMB: bottom only).
To reduce the maximum operating current of the device, upper and lower heating can be
switched alternatingly.
The operating modes of the heating are explained in chapter 12.5.
Separate measurement channels are available for the surveillance of the temperatures of
upper and lower heater.

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7 Generation of Measurements
7.1 Current Measurement (act)
In accordance with the specified sampling rate, the value of the last measurement is
transmitted when the current measurement value is requested. Each measurement is
stored in a circular buffer for the subsequent calculation of minimum, maximum and
average values.
7.2 Minimum and Maximum Values (min and max)
When requesting the minimum and maximum values, the corresponding value is calculated
- via the circular buffer at the interval specified in the configuration (1- 60 measurements) -
and transmitted.
Note: In the case of wind direction, the minimum / maximum value indicates the direction
at which the minimum / maximum wind speed was measured.
7.3 Average Value (avg)
When requesting the average value, this is calculated - via the circular buffer at the interval
specified in the configuration (1 - 60 measurements) - and transmitted. In this way moving
averages can also be calculated.
7.4 Vectorial Average Value (vct)
In the specific case of wind measurement, measurements are calculated vectorially. To this
end, the average values of the vectors are generated internally. Hence the value (wind
speed) and angle (wind direction) of the vector are calculated.
Note: On delivery, the interval for the calculation of minimum, maximum and average
values is set at 60 measurements. If necessary, this can be adjusted to the particular
requirements with the aid of the UMB-Config-Tool (see page 23).
.

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8 Measurement Output
The factory default setting for the transmission of measurements is UMB binary protocol.
You can find an example of a measurement request for the various protocols and a
complete summary of the list of channels in the Appendix.
8.1 Virtual Air Temperature
Sampling rate 1 –10 seconds
Generation of average value 1 –60 measurements
Units °C; °F
Request channels:
UMB Channel
Measuring Range
act
min
max
avg
Measurement Variable
min
max
unit
100
120
140
160
Virtual air temperature
-50.0
70.0
°C
105
125
145
165
Virtual air temperature
-58.0
158.0
°F
Note: In order to transmit the current measurement value the second measurement values
are averaged over the sampling rate.
8.2 Heating Temperature
Sampling rate 1 –10 seconds
Generation of average value 1 –60 measurements
Units °C; °F
Request channels:
UMB Channel
Measuring Range
act
min
max
avg
Measurement Variable
min
max
unit
112
Heating temperature top
-50.0
150.0
°C
113
Heating temperature bottom
-50.0
150.0
°C
117
Heating temperature top
-58.0
302.0
°F
118
Heating temperature bottom
-58.0
302.0
°F
8.3 Air Pressure
Sampling rate 10 seconds
Generation of average value 20 measurements
Units hPa
Request channels:
UMB Channel
Measuring Range
act
min
max
avg
Measurement Variable
min
max
unit
300
320
340
360
Absolute air pressure
300.0
1200.0
hPa
305
325
345
365
Relative air pressure
300.0
1200.0
hPa
Note: For pressure measurement a hardware version equal or greater than 3.0 and a
software version equal or greater than 1.6 is necessary!