Endress+Hauser Teqwave F User manual

Products Solutions Services
Operating Instructions
Teqwave F/I
Modbus TCP
Measuring device with acoustic surface wave technology
BA01823D/06/EN/02.19
71452947
2019-09-10
Valid as of version
2.2.zz (Device firmware)

Teqwave F/I Modbus TCP
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• Make sure the document is stored in a safe place such that it is always available when
working on or with the device.
• To avoid danger to individuals or the facility, read the "Basic safety instructions" section
carefully, as well as all other safety instructions in the document that are specific to
working procedures.
• The manufacturer reserves the right to modify technical data without prior notice. Your
Endress+Hauser Sales Center will supply you with current information and updates to
these instructions.

Teqwave F/I Modbus TCP Table of contents
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Table of contents
1 About this document ................ 6
1.1 Document function ..................... 6
1.2 Symbols .............................. 6
1.2.1 Safety symbols .................. 6
1.2.2 Electrical symbols ................ 6
1.2.3 Symbols for
certain types of information ......... 7
1.2.4 Symbols in graphics ............... 7
1.3 Documentation ........................ 7
1.3.1 Standard documentation ........... 8
1.3.2 Supplementary device-dependent
documentation .................. 8
1.4 Registered trademarks ................... 8
2 Basic safety instructions ............ 9
2.1 Requirements for the personnel ............ 9
2.2 Designated use ........................ 9
2.2.1 Application and fluids ............. 9
2.2.2 Incorrect use .................... 9
2.2.3 Other risks ..................... 9
2.3 Workplace safety ....................... 9
2.4 Operational safety ..................... 10
2.5 Product safety ........................ 10
2.6 IT security ........................... 10
3 Product description ................ 11
3.1 Product design ........................ 11
3.1.1 Sensor ....................... 11
3.1.2 Transmitter .................... 12
3.1.3 Concentration apps .............. 12
4 Incoming acceptance and product
identification ..................... 13
4.1 Incoming acceptance ................... 13
4.2 Product identification ................... 13
4.2.1 Nameplate .................... 14
4.2.2 Symbols on the measuring device .... 14
5 Storage and transport ............. 15
5.1 Storage conditions ..................... 15
5.2 Transporting the product ................ 15
5.3 Packaging disposal ..................... 15
6 Installation ....................... 16
6.1 Mounting requirements ................. 16
6.1.1 Mounting position ............... 16
6.2 Mounting the measuring device ........... 17
6.2.1 Installing the sensor ............. 17
6.2.2 Mounting the transmitter ......... 18
6.3 Post-mounting check ................... 18
7 Electrical connection .............. 19
7.1 Connecting requirements ................ 19
7.1.1 Requirements for connecting cable ... 19
7.1.2 Terminal assignment ............. 19
7.1.3 Requirements for supply unit ....... 20
7.2 Connecting the measuring device .......... 20
7.2.1 Connecting the connecting cable .... 20
7.2.2 Connecting the supply voltage
cables ........................ 20
7.2.3 Connecting the signal cables ....... 21
7.2.4 Ensuring potential equalization ..... 21
7.3 Special connecting instructions ............ 21
7.3.1 Connecting examples ............. 21
7.4 Post-connection check .................. 23
8 Operating options ................. 24
8.1 Overview of the operating options ......... 24
8.2 Access to the measuring device via the local
display ............................. 24
8.2.1 Operational display of the
transmitter with a touch screen ..... 24
8.2.2 LED status indication (transmitter
with LED status indication) ........ 26
8.3 Access to the measuring device via the
operating tool ........................ 26
8.3.1 System requirements ............. 27
8.3.2 Software installation ............. 27
8.3.3 Establishing a connection between
the transmitter and Viewer ........ 27
8.3.4 User interface .................. 29
8.3.5 General control and operating
elements ...................... 30
9 System integration ................ 32
9.1 Overview of device description files ......... 32
9.2 Modbus TCP information ................ 32
9.2.1 General settings for the Modbus
interface ...................... 32
10 Commissioning .................... 34
10.1 Function check ....................... 34
10.2 Switching on the measuring device ......... 34
10.3 Setting the operating language ............ 34
10.4 Configuring the measuring device .......... 34
10.4.1 Selecting the concentration app ..... 35
10.4.2 Setting the concentration offset ..... 35
10.4.3 Configuring the measuring unit ..... 35
10.4.4 Configuring the analog output ...... 36
10.4.5 Configuring the measuring range .... 38
10.4.6 Configuring the relay output ....... 38
10.4.7 Configuring the measured value
display ....................... 41
10.4.8 Configuring the touch screen ....... 42

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10.4.9 Configuring the failsafe mode ...... 43
10.5 Advanced settings ..................... 44
10.5.1 Performing field calibration with a
fluid ......................... 45
10.6 Application package "Viewer with interface
for data download" ..................... 46
10.6.1 Availability .................... 46
10.6.2 Activation ..................... 46
10.6.3 General information ............. 46
10.6.4 Device memory disk space ......... 46
10.6.5 Specifying the storage interval ...... 46
11 Operation ......................... 48
11.1 Adjusting the operating language .......... 48
11.2 Configuring the local display ............. 48
11.3 Reading measured values via the local
display ............................. 48
11.3.1 Adjusting the graph display format .. 48
11.3.2 Graph tools .................... 49
11.4 Reading measured values via the operating
tool ................................ 49
11.4.1 Adjusting the graph display format .. 49
11.4.2 Graph tools .................... 50
11.4.3 Switching auto scale on and off ..... 50
11.4.4 Clearing the graph ............... 50
11.5 Accessing measured data via the operating
tool ................................ 50
11.5.1 Saving the current measuring point
to a .csv file .................... 51
11.5.2 Recording the measuring points ..... 51
11.5.3 Stop recording .................. 51
11.6 Loading measured values in the Graph View .. 51
11.6.1 Loading the measured data ........ 51
11.7 Reading the device memory and saving
measured data ........................ 51
11.7.1 Reading measured data from the
transmitter .................... 52
11.7.2 Saving the read measured data to
a .csv file ...................... 52
11.7.3 Deleting saved measured data from
the transmitter ................. 52
11.8 Managing concentration apps ............ 52
11.8.1 Adding a concentration app to the
transmitter .................... 53
11.8.2 Deleting a concentration app from
the transmitter ................. 53
11.9 Replacing the transmitter ................ 53
11.10 Updating the firmware .................. 53
12 Diagnostics and troubleshooting ... 55
12.1 General troubleshooting ................. 55
12.1.1 For the local display: Transmitter
with touch screen ............... 55
12.1.2 For the local display: Transmitter
with LEDs ..................... 55
12.1.3 For output signals ............... 55
12.1.4 For access via the "Teqwave Viewer"
operating tool .................. 56
12.2 Diagnostics information for transmitter with
LED status indication ................... 56
12.3 Diagnostics information on local display and
in operating tool ...................... 57
12.4 Diagnostic information via the Modbus
protocol ............................. 58
12.5 Diagnostics information via dispersion
indicator ............................ 59
12.6 Checking the sensor .................... 60
12.7 Resetting the measuring device to factory
default settings ....................... 60
12.7.1 Restoring factory settings via a
transmitter with a touch screen ..... 60
12.7.2 Restoring factory settings via the
Viewer ....................... 61
12.8 Device information .................... 61
12.9 Firmware history ...................... 62
13 Maintenance ...................... 63
13.1 Maintenance tasks ..................... 63
13.1.1 Exterior cleaning ................ 63
13.1.2 Interior cleaning ................ 63
13.2 Endress+Hauser services ................ 63
14 Repair ............................ 64
14.1 General notes ........................ 64
14.1.1 Repair and conversion concept ...... 64
14.1.2 Notes for repair and conversion ..... 64
14.2 Spare parts .......................... 64
14.3 Endress+Hauser services ................ 64
14.4 Return .............................. 64
14.5 Disposal ............................ 64
14.5.1 Removing the measuring device ..... 64
14.5.2 Disposing of the measuring device ... 65
15 Accessories ....................... 66
15.1 Device-specific accessories ............... 66
15.1.1 About the transmitter ............ 66
15.2 Communication specific accessories ........ 66
15.3 Service-specific accessories ............... 67
16 Technical data .................... 68
16.1 Application .......................... 68
16.2 Function and system design .............. 68
16.3 Input ............................... 68
16.4 Output ............................. 68
16.5 Power supply ......................... 71
16.6 Performance characteristics .............. 72
16.7 Installation .......................... 72
16.8 Environment ......................... 72
16.9 Process ............................. 73
16.10 Mechanical construction ................ 73
16.11 Operability .......................... 74
16.12 Certificates and approvals ............... 75
16.13 Application packages ................... 75
16.14 Accessories .......................... 75

Teqwave F/I Modbus TCP Table of contents
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16.15 Documentation ....................... 75
Index .................................. 76

About this document Teqwave F/I Modbus TCP
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1 About this document
1.1 Document function
These Operating Instructions contain all the information that is required in various phases
of the life cycle of the device: from product identification, incoming acceptance and
storage, to mounting, connection, operation and commissioning through to
troubleshooting, maintenance and disposal.
1.2 Symbols
1.2.1 Safety symbols
DANGER
This symbol alerts you to a dangerous situation. Failure to avoid this situation will result in
serious or fatal injury.
WARNING
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in
serious or fatal injury.
CAUTION
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in
minor or medium injury.
NOTICE
This symbol contains information on procedures and other facts which do not result in
personal injury.
1.2.2 Electrical symbols
Symbol Meaning
Direct current
Alternating current
Direct current and alternating current
Ground connection
A grounded terminal which, as far as the operator is concerned, is grounded via a
grounding system.
Protective Earth (PE)
A terminal which must be connected to ground prior to establishing any other
connections.
The ground terminals are situated inside and outside the device:
• Inner ground terminal: Connects the protectiv earth to the mains supply.
• Outer ground terminal: Connects the device to the plant grounding system.
Signal ground connection
A terminal that can be used as the ground contact for the digital input.
Relay output connection
A terminal that can be used as a relay output.

Teqwave F/I Modbus TCP About this document
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1.2.3 Symbols for certain types of information
Symbol Meaning
Permitted
Procedures, processes or actions that are permitted.
Preferred
Procedures, processes or actions that are preferred.
Forbidden
Procedures, processes or actions that are forbidden.
Tip
Indicates additional information.
Reference to documentation.
A
Reference to page.
Reference to graphic.
Notice or individual step to be observed.
1.
,
2.
,
3.
… Series of steps.
Result of a step.
Help in the event of a problem.
Visual inspection.
1.2.4 Symbols in graphics
Symbol Meaning
1, 2, 3, ... Item numbers
1.
,
2.
,
3.
, … Series of steps
A, B, C, ... Views
A-A, B-B, C-C, ... Sections
-
Hazardous area
.
Safe area (non-hazardous area)
Flow direction
1.3 Documentation
For an overview of the scope of the associated Technical Documentation, refer to the
following:
•W@M Device Viewer (www.endress.com/deviceviewer): Enter the serial number
from nameplate
•Endress+Hauser Operations App: Enter the serial number from the nameplate or
scan the 2D matrix code (QR code) on the nameplate
Detailed list of the individual documents along with the documentation code
→  75

About this document Teqwave F/I Modbus TCP
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1.3.1 Standard documentation
Document type Purpose and content of the document
Technical Information Planning aid for your device
The document contains all the technical data on the device and provides
an overview of the accessories and other products that can be ordered for
the device.
Sensor Brief Operating Instructions Guides you quickly to the 1st measured value - Part 1
The Sensor Brief Operating Instructions are aimed at specialists with
responsibility for installing the measuring device.
• Incoming acceptance and product identification
• Storage and transport
• Installation
Transmitter Brief Operating
Instructions
Guides you quickly to the 1st measured value - Part 2
The Transmitter Brief Operating Instructions are aimed at specialists with
responsibility for commissioning, configuring and parameterizing the
measuring device (until the first measured value).
• Product description
• Installation
• Electrical connection
• Operation options
• System integration
• Commissioning
• Diagnostic information
Description of Device Parameters Reference for your parameters
The document provides a detailed explanation of each individual
parameter in the Expert operating menu. The description is aimed at
those who work with the device over the entire life cycle and perform
specific configurations.
The document provides Modbus-specific information for each individual
parameter in the Expert operating menu.
1.3.2 Supplementary device-dependent documentation
Additional documents are supplied depending on the device version ordered: Always
comply strictly with the instructions in the supplementary documentation. The
supplementary documentation is an integral part of the device documentation.
1.4 Registered trademarks
Modbus®
Registered trademark of SCHNEIDER AUTOMATION, INC.

Teqwave F/I Modbus TCP Basic safety instructions
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2 Basic safety instructions
2.1 Requirements for the personnel
The personnel for installation, commissioning, diagnostics and maintenance must fulfill
the following requirements:
‣Trained, qualified specialists must have a relevant qualification for this specific function
and task.
‣Are authorized by the plant owner/operator.
‣Are familiar with federal/national regulations.
‣Before starting work, read and understand the instructions in the manual and
supplementary documentation as well as the certificates (depending on the
application).
‣Follow instructions and comply with basic conditions.
The operating personnel must fulfill the following requirements:
‣Are instructed and authorized according to the requirements of the task by the facility's
owner-operator.
‣Follow the instructions in this manual.
2.2 Designated use
2.2.1 Application and fluids
Only use the measuring device described in these Operating Instructions to measure the
concentration of liquids.
Only operate the measuring device within the limits specified in the technical data and for
the specific concentration app.
To ensure that the measuring device remains in proper condition for the operation time:
‣Only use the measuring device for fluids to which the process-wetted materials are
sufficiently resistant.
2.2.2 Incorrect use
Non-designated use can compromise safety. The manufacturer is not liable for damage
caused by improper or non-designated use.
2.2.3 Other risks
LWARNING
Hot fluids can present a burn hazard.
‣In the case of high fluid temperatures, ensure protection against contact to prevent
burns.
2.3 Workplace safety
For work on and with the device:
‣Wear the required personal protective equipment according to federal/national
regulations.
For welding work on the piping:
‣Do not ground the welding unit via the measuring device.

Basic safety instructions Teqwave F/I Modbus TCP
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2.4 Operational safety
Risk of injury.
‣Operate the device in proper technical condition and fail-safe condition only.
‣The operator is responsible for interference-free operation of the device.
Conversions to the device
Unauthorized modifications to the device are not permitted and can lead to unforeseeable
dangers.
‣If, despite this, modifications are required, consult with Endress+Hauser.
Repair
To ensure continued operational safety and reliability,
‣Carry out repairs on the device only if they are expressly permitted.
‣Observe federal/national regulations pertaining to repair of an electrical device.
‣Use original spare parts and accessories from Endress+Hauser only.
2.5 Product safety
This measuring device is designed in accordance with good engineering practice to meet
state-of-the-art safety requirements, has been tested, and left the factory in a condition in
which it is safe to operate.
It meets general safety standards and legal requirements. It also complies with the EU
directives listed in the device-specific EU Declaration of Conformity. .
2.6 IT security
Our warranty is valid only if the device is installed and used as described in the Operating
Instructions. The device is equipped with security mechanisms to protect it against any
inadvertent changes to the settings.
IT security measures, which provide additional protection for the device and associated
data transfer, must be implemented by the operators themselves in line with their security
standards.

Teqwave F/I Modbus TCP Product description
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3 Product description
The measuring system consists of a sensor and a transmitter. The sensor and transmitter
are mounted in physically separate locations. A connecting cable with a push-pull
connector interconnects the sensor and transmitter.
3.1 Product design
Two sensor versions are available:
• "Teqwave F" sensor
• "Teqwave I" sensor
Two transmitter versions are available:
• Transmitter with a touchscreen
• Transmitter with LED status indication
The measuring system uses concentration apps, which are individually tailored to the
measurement task and encoded to work only with the serial number of a specific
transmitter.
3.1.1 Sensor
12
3 3
A0035451
 1 Sensor versions
1 "Teqwave F" sensor
2 "Teqwave I" sensor
3 Push-pull connection for connecting to the transmitter

Product description Teqwave F/I Modbus TCP
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3.1.2 Transmitter
1
34 5
2
3
A0035452
 2 Transmitter versions
1 Transmitter with LED status indication
2 Transmitter with a touchscreen
3 Push-pull connection for connecting to the sensor
4 Terminal strip with supply voltage, analog output, relay output and digital input
5 Ethernet interface for digital signal transmission ("Teqwave Viewer" operating tool and Modbus protocol)
3.1.3 Concentration apps
A concentration app contains specific configurations for the measurement of a certain
liquid and, along with the measured sensor signals, is used as the basis for calculating the
concentration. Endress+Hauser provides a separate concentration app for every type of
fluid.
The concentration app is a file with lmf format. A list of the available concentration apps is
provided in the Applicator →  67.
If you require a concentration app that is not already listed in the Applicator,
Endress+Hauser requires a sample of the fluid to create the concentration app. Every
transmitter can use a maximum of 25 concentration apps.
Concentration apps are individually encoded to work only with the serial number of a
specific transmitter. The transmitter in service uses the serial number saved in the .lmf file
to check whether the concentration app has been specifically configured for use with this
transmitter. If this is not the case, it is not possible to add the concentration app.
The data sheet provided with the concentration app contains information about the fluid,
the permitted measuring ranges and the accuracy of the concentration measurement.

Teqwave F/I Modbus TCP Incoming acceptance and product identification
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4 Incoming acceptance and product
identification
4.1 Incoming acceptance
Is the order code on the delivery note (1) identical to the order code on the product
sticker (2)?
1
2

Is the measuring device undamaged? 
Do the nameplate data match the ordering information on the delivery note? 
Is a CD-ROM provided with the "Teqwave Viewer" software? 
Is a CD-ROM provided with the Technical Documentation (depends on device version) and documents? 
• If one of the conditions is not satisfied, contact your Endress+Hauser Sales Center.
• Depending on the device version, the CD-ROM might not be part of the delivery!
The Technical Documentation is available via the Internet or via the Endress+Hauser
Operations App, see the "Product identification" section .
4.2 Product identification
The measuring device can be identified in the following ways:
• Using the nameplate specifications on the transmitter
• Using the order code with a breakdown of the device features on the delivery note
• By entering the serial numbers from the nameplates in W@M Device Viewer
(www.endress.com/deviceviewer): all the information about the measuring device is
displayed
• By entering the serial numbers from the nameplates into the
Endress+Hauser Operations App or by scanning the 2-D matrix code (QR code) on the
measuring device with the Endress+Hauser Operations App: all the information about
the measuring device is displayed

Incoming acceptance and product identification Teqwave F/I Modbus TCP
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4.2.1 Nameplate
Ta
IP
Device ID FW
Device Rev.
11
13
Order code:
Ser. no.:
Ext. ord. cd.:
2
3
4
5
6
7
8
9
10
12
1
i
A0035638
 3 Example of a nameplate on a transmitter
1 Place of manufacture
2 Order code
3 Serial number (Ser. no.)
4 Extended order code (Ext. ord. cd.)
5 Permitted ambient temperature (Tα)
6 Degree of protection
7 Firmware version (Device ID FW) ex-works
8 Device version (Device Rev.) ex-works
9 Barcode for internal use
10 Barcode for internal use
11 Name of the measuring device
12 2D matrix code with serial number
13 Space for approvals and certificates
4.2.2 Symbols on the measuring device
Symbol Meaning
WARNING
This symbol alerts you to a life-threatening situation. Failure to avoid this situation
can result in serious or fatal injury.
A0011194
Reference to documentation
Refers to the corresponding measuring device documentation.
A0035455
Signal ground connection
A terminal that can be used as the ground contact for the digital input.
A0035456
Relay output connection
A terminal that can be used as a relay output.

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5 Storage and transport
5.1 Storage conditions
Observe the following notes for storage:
• store in the original packaging to ensure protection from shock
• protect from direct sunlight to avoid unacceptably high surface temperatures
• store in a dry and dust-free place
• do not store outdoors
Storage temperature →  73.
5.2 Transporting the product
• Transport the measuring device to the measuring point in the original packaging.
• Do not remove protective covers or caps installed on process connections.
5.3 Packaging disposal
All packaging materials are environmentally friendly and 100 % recyclable: box in
accordance with European Packaging Directive 94/62EC; recyclability is confirmed by the
affixed RESY symbol.

Installation Teqwave F/I Modbus TCP
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6 Installation
6.1 Mounting requirements
6.1.1 Mounting position
Mounting location
h
A0032998
 4 Mounting location
Ideally, the sensor should be installed in an ascending pipe, while ensuring a sufficient
distance is kept to the next pipe elbow: h ≥ 5 × DN.
Orientation Teqwave I
A0035457
 5 Orientation of Teqwave I
Mount Teqwave I so that the active sensor area can be fully immersed in the measured
liquid.
If installing the sensor in a pipe, make sure the sensor is aligned correctly to avoid
irregular flow to the sensor. Rotate the sensor so that the dot on the process connection is
aligned with the flow direction.
If installing the sensor in a horizontal position, make sure the sensor is aligned correctly to
avoid the buildup of deposits around the sensing element. Rotate the sensor so that the
black dot on the process connection points up or down.

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NOTICE
Measurement result is not representative
Heterogeneous mixing of the fluid and irregular flow to the sensor can distort the
measurement results, which are only valid for the layer of liquid in which the sensor is
located.
‣Ensure the homogeneous mixing of the liquid and continuous flow of liquid to the
sensor.
Inlet and outlet runs
Observe the following inlet and outlet runs to comply with accuracy specifications:
≥ 10 × DN ≥ 5 × DN
A0035458
 6 Inlet and outlet runs
6.2 Mounting the measuring device
6.2.1 Installing the sensor
LWARNING
Danger due to improper process sealing
‣Use seals whose internal diameters are larger than or the same size as the process
connection and pipe.
‣Use clean, undamaged seals only.
‣Secure the seals correctly.
Mounting the sensor: Teqwave F
NOTICE
Damage to the sensor
Twisting the sensor when tightening the threaded joints can damage the sensor.
‣When tightening the threaded joint, always use a second open-ended wrench or pipe
wrench to apply counter-pressure (prevents twisting).
‣Do not hold the housing with the pipe wrench or open-ended wrench.
‣Mount the sensor in the pipe or on the tank wall in full compliance with the mounting
conditions →  16.
Mounting the sensor: Teqwave I
Mount the sensor on the pipe or tank wall on a threaded adapter or flange adapter in full
compliance with the mounting conditions →  16.

Installation Teqwave F/I Modbus TCP
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6.2.2 Mounting the transmitter
12
A0035459
 7 Mounting the transmitter
1 DIN rail holder
2 DIN rail according to DIN EN 60715 TH 35
Mount the transmitter on the DIN rail using the DIN rail holder.
6.3 Post-mounting check
Perform the following checks once you have installed the measuring device:
Device condition and specifications Notes
Is the device damaged (visual inspection)? 
Does the device meet the specifications, such as:
• Ambient temperature
• Nominal pressure
• Measuring range →  68

Installation Notes
Is there a sufficient distance between the sensor and the next pipe elbow? →  16 
Teqwave I: Is the active sensor area fully immersed in the liquid? →  16 
If installing Teqwave I in a pipe:
Is the black dot on the process connection aligned with the flow direction? →  68

If installing Teqwave I in a horizontal position:
Align the dot on the process connection so that it points either up or down? →  68

Process environment/process conditions Notes
Are the specifications for the inlet run observed?
Inlet run ≥ 10 × DN

Are the specifications for the outlet run observed?
Outlet run ≥ 5 × DN

Is the measuring device protected against precipitation and direct sunlight? 

Teqwave F/I Modbus TCP Electrical connection
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7 Electrical connection
The measuring device does not have an internal circuit breaker. For this reason,
assign the measuring device a switch or power-circuit breaker that allows the power
supply line to be easily disconnected from the mains.
7.1 Connecting requirements
7.1.1 Requirements for connecting cable
Connecting cable between sensor and transmitter
Only use the cable supplied.
Electrical safety
National regulations and standards apply.
The connecting cables provided by the customer must fulfill the following requirements.
Modbus Ethernet cable
Cable type 100 Base-TX
Cable category Min. CAT5
Plug type RJ-45 (8P8C)
Shielding S/FTP, F/FTP, SF/FTP, S/UTP, F/UTP or SF/UTP
Cable length Max. 30 m (98 ft)
Power supply and signal cables
Cable type Strand or solid wire
Conductor cross-
section
0.129 to 1.31 mm2 (16 to 26 AWG)
Temperature range • –40 to 70 °C (–40 to 158 °F) when mounted in a fixed position
• –10 to 50 °C (14 to 122 °F) when cable can move freely
Cable length Max. 30 m (98 ft)
Power supply cable
Standard installation cable is sufficient.
Analog output
Digital input
Relay output (alarm)
7.1.2 Terminal assignment
Terminal Assignment
V+ V in
24 V DC Supply voltage
V-
+out
0 to 10 V; 4 to 20 mA Analog output
-
0output
selection Digital input
1
Signal ground

Electrical connection Teqwave F/I Modbus TCP
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Terminal Assignment
alarm
max. 50 V, 1 A Relay output
7.1.3 Requirements for supply unit
Supply voltage DC 24 V (nominal voltage: DC 18 to 35 V)
Power unit The power unit must be tested to ensure it meets safety requirements (e.g. PELV,
SELV).
7.2 Connecting the measuring device
LDANGER
Incorrect connection may result in injury or death
‣Have electrical connection work carried out by appropriately trained specialists only.
‣Observe applicable federal/national installation codes and regulations.
‣Comply with local workplace safety regulations.
7.2.1 Connecting the connecting cable
Connect the sensor to the transmitter only using the connecting cable supplied.
NOTICE
Damage to the measuring device
Damaged cables can impact the functional integrity of the measuring device.
‣Avoid strain when laying the connecting cable.
‣Do not bend or shorten the connecting cable.
‣Do not remove the plug of the connecting cable.
‣Replace damaged or broken cables immediately.
‣Route connecting cables separate from cables that carry very large electrical current
(e.g. converter and motor connecting cables).
 8 Connecting the connecting cable
Insert the push-pull connector of the connecting cable into the socket at the position
indicated until they engage with a click.
Red dots on the connectors indicate the position.
7.2.2 Connecting the supply voltage cables
The measuring device does not have an internal circuit breaker. For this reason,
assign the measuring device a switch or power-circuit breaker that allows the power
supply line to be easily disconnected from the mains.
Connect the supply voltage cables to the transmitter via screw terminals, terminal
assignment →  21.