WAGO 750-489 User manual

Manual
WAGO-I/O-SYSTEM 750
750-489
4AI RTD/TC/Strain Gauge Ex
i
4
-Channel Analog Input; RTD/TC/Strain Gauge;
Intrinsically Safe
Version 1.1.0, valid from FW Version 02

2 WAGO-I/O-SYSTEM 750
750-489 4AI RTD/TC/Strain Gauge Ex i
Manual
Version 1.1.0, valid from FW Version 02
© 2020 WAGO Kontakttechnik GmbH & Co. KG
All rights reserved.
WAGO Kontakttechnik GmbH & Co. KG
Hansastraße 27
D-32423 Minden
Phone: [phone] – 0
Fax: [phone] – 1 69
E-Mail: [email protected]
Web: www.wago.com
Technical Support
Phone: [phone] – 4 45 55
Fax: [phone] – 84 45 55
E-Mail: [email protected]
Every conceivable measure has been taken to ensure the accuracy and
completeness of this documentation. However, as errors can never be fully
excluded, we always appreciate any information or suggestions for improving the
documentation.
E-Mail: [email protected]
We wish to point out that the software and hardware terms as well as the
trademarks of companies used and/or mentioned in the present manual are
generally protected by trademark or patent.
WAGO is a registered trademark of WAGO Verwaltungsgesellschaft mbH.

WAGO-I/O-SYSTEM 750 Table of Contents 3
750-489 4AI RTD/TC/Strain Gauge Ex i
Manual
Version 1.1.0, valid from FW Version 02
Table of Contents
1Notes about this Documentation .............................................................8
1.1 Validity of this Documentation.................................................................8
1.2 Revision History......................................................................................8
1.3 Copyright................................................................................................9
1.4 Symbols ...............................................................................................10
1.5 Number Notation ..................................................................................12
1.6 Font Conventions .................................................................................12
2Important Notes ......................................................................................13
2.1 Legal Bases..........................................................................................13
2.1.1 Subject to Changes..........................................................................13
2.1.2 Personnel Qualifications ..................................................................13
2.1.3 Use of the 750 Series in Compliance with Underlying Provisions.....13
2.1.4 Technical Condition of Specified Devices.........................................14
2.1.4.1 Disposal ......................................................................................14
2.1.4.1.1 Electrical and Electronic Equipment........................................14
2.1.4.1.2 Packaging...............................................................................15
2.2 Safety Advice (Precautions) .................................................................16
3Device Description..................................................................................19
3.1 View .....................................................................................................22
3.2 Connectors...........................................................................................23
3.2.1 Data Contacts/Local Bus..................................................................23
3.2.2 Power Jumper Contacts/Field Supply ..............................................24
3.2.3 CAGE CLAMP®Connectors.............................................................25
3.3 Display Elements..................................................................................26
3.4 Operating Elements..............................................................................26
3.5 Schematic Diagram ..............................................................................27
3.6 Technical Data .....................................................................................28
3.6.1 Device Data .....................................................................................28
3.6.2Power Supply...................................................................................28
3.6.3 Communication................................................................................28
3.6.4 Inputs...............................................................................................29
3.6.5 Explosion Protection ........................................................................32
3.6.6 Climatic Environmental Conditions...................................................33
3.6.7 Connection Type..............................................................................33
3.7 Approvals .............................................................................................34
3.8 Standards and Guidelines ....................................................................36
4Process Image.........................................................................................37
4.1 Overview ..............................................................................................37
4.2 Status Bytes .........................................................................................38
4.3 Process Data........................................................................................40
4.3.1 Overview of Sensor Types ...............................................................40
4.3.2 Conversion of the Process Values ...................................................43
4.3.2.1 Temperature Measurements .......................................................43
4.3.2.2 Resistance and Voltage Measurements ......................................44
4.3.2.3 Potentiometers ............................................................................45

4 Table of Contents WAGO-I/O-SYSTEM 750
750-489 4AI RTD/TC/Strain Gauge Ex i
Manual
Version 1.1.0, valid from FW Version 02
4.4 Temperature Measurement (Celsius) ...................................................46
4.4.1 Pt100, Pt200, Pt500, Pt1000 (EN 60751).........................................47
4.4.1.1 Standard Format/Celsius.............................................................47
4.4.1.2 S5-FB250 Format/Celsius ...........................................................47
4.4.2 Ni100, Ni120, Ni200, Ni500, Ni1000 (TK6180, DIN 43760),
Ni1000 (TK5000, DIN 43760)...........................................................48
4.4.3 Thermocouples (DIN EN 60584-1)...................................................49
4.4.3.1 TC Type B – Standard Format/Celsius ........................................49
4.4.3.2 TC Type B – S5-FB250 Format/Celsius.......................................49
4.4.3.3 TC Type C – Standard Format/Celsius........................................50
4.4.3.4 TC Type C – S5-FB250 Format/Celsius ......................................50
4.4.3.5 TC Type E – Standard Format/Celsius ........................................51
4.4.3.6 TC Type E – S5-FB250 Format/Celsius.......................................51
4.4.3.7 TC Type J – Standard Format/Celsius.........................................52
4.4.3.8 TC Type J – S5-FB250 Format/Celsius .......................................52
4.4.3.9 TC Type K – Standard Format/Celsius ........................................53
4.4.3.10 TC Type K – S5-FB250 Format/Celsius.......................................53
4.4.3.11 TC Type N – Standard Format/Celsius........................................54
4.4.3.12 TC Type N – S5-FB250 Format/Celsius ......................................54
4.4.3.13 TC Type R and Type S – Standard Format/Celsius.....................55
4.4.3.14 TC Type R and Type S – S5-FB250 Format/Celsius ...................55
4.4.3.15 TC Type T – Standard Format/Celsius ........................................56
4.4.3.16 TC Type T – S5-FB250 Format/Celsius.......................................56
4.4.4 Temperature Measurements (RTD & TC) with High Resolution .......57
4.5 Temperature Measurement (Fahrenheit) ..............................................59
4.5.1 Pt100, Pt200, Pt500, Pt1000 (EN 60751).........................................60
4.5.1.1 Standard Format/Fahrenheit........................................................60
4.5.1.2 S5-FB250 Format/ Fahrenheit .....................................................60
4.5.2 Ni100, Ni120, Ni200, Ni500, Ni1000 (TK6180, DIN 43760),
Ni1000 (TK5000, DIN 43760)...........................................................61
4.5.2.1 Standard Format/Fahrenheit........................................................61
4.5.2.2 S5-FB250 Format/Fahrenheit ......................................................61
4.5.3 Thermocouples (DIN EN 60584-1)...................................................62
4.5.3.1 TC Type B – Standard Format/Fahrenheit...................................62
4.5.3.2 TC Type B – S5-FB250 Format/Fahrenheit .................................62
4.5.3.3 TC Type C – Standard Format/Fahrenheit...................................63
4.5.3.4 TC Type C – S5-FB250 Format/Fahrenheit .................................63
4.5.3.5 TC Type E – Standard Format/Fahrenheit...................................64
4.5.3.6 TC Type E – S5-FB250 Format/Fahrenheit .................................64
4.5.3.7 TC Type J – Standard Format/Fahrenheit ...................................65
4.5.3.8 TC Type J – S5-FB250 Format/Fahrenheit..................................65
4.5.3.9 TC Type K – Standard Format/Fahrenheit...................................66
4.5.3.10 TC Type K – S5-FB250 Format/Fahrenheit .................................66
4.5.3.11 TC Type N – Standard Format/Fahrenheit...................................67
4.5.3.12 TC Type N – S5-FB250 Format/Fahrenheit .................................67
4.5.3.13 TC Type R and Type S – Standard Format/Fahrenheit................68
4.5.3.14 TC Type R and Type S – S5-FB250 Format/Fahrenheit ..............68
4.5.3.15 TC Type T – Standard Format/Fahrenheit ...................................69
4.5.3.16 TC Type T – S5-FB250 Format/Fahrenheit .................................69
4.5.4 Temperature Measurements (RTD & TC) with High Resolution .......70

WAGO-I/O-SYSTEM 750 Table of Contents 5
750-489 4AI RTD/TC/Strain Gauge Ex i
Manual
Version 1.1.0, valid from FW Version 02
4.6 Temperature Measurement (Kelvin) .....................................................72
4.6.1 Pt100, Pt200, Pt500, Pt1000 (EN 60751).........................................73
4.6.1.1 Standard Format/Kelvin...............................................................73
4.6.1.2 S5-FB250 Format/Kelvin .............................................................73
4.6.2 Ni100, Ni120, Ni200, Ni500, Ni1000 (TK6180, DIN 43760),
Ni1000 (TK5000, DIN 43760)...........................................................74
4.6.2.1 Standard Format/Kelvin...............................................................74
4.6.2.2 S5-FB250 Format/Kelvin .............................................................74
4.6.3 Thermocouples (DIN EN 60584-1)...................................................75
4.6.3.1 TC Type B – Standard Format/Kelvin ..........................................75
4.6.3.2 TC Type B – S5-FB250 Format/Kelvin.........................................75
4.6.3.3 TC Type C – Standard Format/Kelvin..........................................76
4.6.3.4 TC Type C – S5-FB250 Format/Kelvin ........................................76
4.6.3.5 TC Type E – Standard Format/Kelvin ..........................................77
4.6.3.6 TC Type E – S5-FB250 Format/Kelvin.........................................77
4.6.3.7 TC Type J – Standard Format/Kelvin...........................................78
4.6.3.8 TC Type J – S5-FB250 Format/Kelvin .........................................78
4.6.3.9 TC Type K – Standard Format/Kelvin ..........................................79
4.6.3.10 TC Type K – S5-FB250 Format/Kelvin.........................................79
4.6.3.11 TC Type N – Standard Format/Kelvin..........................................80
4.6.3.12 TC Type N – S5-FB250 Format/Kelvin ........................................80
4.6.3.13 TC Type R and Type S – Standard Format/Kelvin.......................81
4.6.3.14 TC Type R and Type S – S5-FB250 Format/Kelvin .....................81
4.6.3.15 TC Type T – Standard Format/Kelvin ..........................................82
4.6.3.16 TC Type T – S5-FB250 Format/Kelvin.........................................82
4.6.4 Temperature Measurements (RTD & TC) with High Resolution .......83
4.6.4.1 Standard Format/Kelvin...............................................................83
4.6.4.2 S5-FB250 Format/Kelvin .............................................................84
4.7 Resistance Measurement .....................................................................85
4.7.1 Resistance Measurement 1 (0 Ω … 250 Ω) .....................................86
4.7.2 Resistance Measurement 2 (0 Ω … 500 Ω) .....................................87
4.7.3 Resistance Measurement 3 (0 Ω … 1 kΩ)........................................88
4.7.4 Resistance Measurement 4 (0 Ω … 2 kΩ)........................................89
4.7.5 Resistance Measurement 5 (0 Ω … 4 kΩ)........................................90
4.7.6 Resistance Measurement PTC ........................................................91
4.7.7 Resistance Measurement (Potentiometer) .......................................92
4.8 Voltage Measurement ..........................................................................94
4.8.1 Voltage Measurement 1 (±30 mV)....................................................95
4.8.2 Voltage Measurement 2 (±60 mV)....................................................96
4.8.3Voltage Measurement 3 (±120 mV)..................................................97
4.8.4 Voltage Measurement 4 (±250 mV)..................................................98
4.8.5 Voltage Measurement 5 (±500 mV)..................................................99
4.8.6 Voltage Measurement 6 (±1000 mV)..............................................100
4.8.7 Voltage Measurement 7 (±2000 mV)..............................................101
4.9 Resistor Bridge (Strain Gauge)...........................................................102
4.9.1 Strain Gauge Bridge Supply Uref (2.4 V) .........................................103
4.9.2 Strain Gauge Bridge Voltage Ud (±15 mV)......................................104
4.9.3 Strain Gauge Bridge Voltage Ud (±30 mV)......................................105
4.9.4 Strain Gauge Bridge Voltage Ud (±60 mV)......................................106

6 Table of Contents WAGO-I/O-SYSTEM 750
750-489 4AI RTD/TC/Strain Gauge Ex i
Manual
Version 1.1.0, valid from FW Version 02
5Mounting................................................................................................107
5.1 Mounting Sequence............................................................................108
5.2 Inserting and Removing Devices ........................................................109
5.2.1 Inserting the I/O Module.................................................................109
5.2.2 Removing the I/O Module ..............................................................110
6Connect Devices ...................................................................................111
6.1 Connecting a Conductor to the CAGE CLAMP®.................................111
6.2 Power Supply Concept .......................................................................112
6.2.1 Power Supply Concept for Marine Applications in Ex i ...................114
6.3 Connection Examples.........................................................................117
6.3.1 RTDs – Resistance Thermometers ................................................117
6.3.2 TCs – Thermocouples....................................................................118
6.3.3 Millivolt Transmitters ......................................................................118
6.3.4 Potentiometer Setting.....................................................................119
6.3.5 PTC Probes – Thermistors.............................................................119
6.3.6 Resistor Bridges (Strain Gauge) ....................................................120
7Commissioning .....................................................................................121
7.1 Configuration and Parameterization with WAGO-I/O-CHECK............122
7.1.1 Parameterization Dialog.................................................................125
7.1.1.1 Title Bar.....................................................................................125
7.1.1.2 Information Bar..........................................................................126
7.1.1.3 Buttons......................................................................................126
7.1.1.4 Menu .........................................................................................127
7.1.2 Settings via the Menu.....................................................................127
7.1.2.1 Common....................................................................................127
7.1.2.2 Channel Settings .......................................................................129
7.1.2.3 Scaling ......................................................................................132
7.1.2.4 Calibration .................................................................................135
7.1.2.5 Calculation ................................................................................138
7.2 Configuration and Parameterization with e!COCKPIT.........................140
7.3 Configuration and Parameterization via GSD File...............................140
7.3.1 750-489 (4AI RTD/TC/Strain Gauge Ex i) Configuration ................140
7.3.1.1 PROFIBUS DP Fieldbus Couplers/Controllers
750-333(/0xx-000), 750-833(/0xx-000) .....................................140
7.3.1.2 PROFINET IO Fieldbus Couplers 750-375(/025-000),
750-377(/025-000).....................................................................141
7.3.2 750-489 (4AI RTD/TC/Strain Gauge Ex i) Parameterization...........142
7.3.2.1 PROFIBUS DP Fieldbus Couplers/Controllers
750-333(/0xx-000), 750-833(/0xx-000) .....................................142
7.3.2.2 PROFINET IO Fieldbus Couplers 750-375(/025-000),
750-377(/025-000).....................................................................143
7.3.2.3 All PROFIBUS DP and PROFINET IO Fieldbus Couplers .........144
7.3.2.4 PROFIBUS DP Fieldbus Couplers 750-333(/0xx-000),
750-833(/0xx-000) .....................................................................146
7.3.2.5 PROFINET IO Fieldbus Couplers 750-375(/025-000),
750-377(/025-000).....................................................................146
8Scaling Measured Values .....................................................................148
9Calibrating Measured Values ...............................................................149

WAGO-I/O-SYSTEM 750 Table of Contents 7
750-489 4AI RTD/TC/Strain Gauge Ex i
Manual
Version 1.1.0, valid from FW Version 02
10 Diagnostics............................................................................................151
10.1 Behavior of the I/O Module in the Event of Error.................................151
10.2 Diagnostics via LED Indicators ...........................................................154
11 Use in Hazardous Environments .........................................................155
11.1 Marking Configuration Examples ........................................................156
11.1.1 Marking for Europe According to ATEX and IECEx........................156
11.1.2 Marking for the United States of America (NEC) and Canada
(CEC).............................................................................................160
11.2 Installation Regulations.......................................................................163
11.2.1 Special Notes including Explosion Protection.................................163
11.2.2 Special Notes Regarding UL Hazardous Location..........................165
12 Service...................................................................................................166
12.1 Firmware Update/Downgrade.............................................................166
12.2 Recalibration ......................................................................................167
12.3 WAGO UII (Unique Item Identifier) .....................................................168
13 Appendix ...............................................................................................169
13.1 Strain Gauge Application Example .....................................................169
List of Figures ................................................................................................170
List of Tables..................................................................................................172

8 Notes about this Documentation WAGO-I/O-SYSTEM 750
750-489 4AI RTD/TC/Strain Gauge Ex i
Manual
Version 1.1.0, valid from FW Version 02
1 Notes about this Documentation
Always retain this documentation!
This documentation is part of the product. Therefore, retain the documentation
during the entire service life of the product. Pass on the documentation to any
subsequent user. In addition, ensure that any supplement to this documentation
is included, if necessary.
1.1 Validity of this Documentation
This documentation is only applicable to the I/O module 750-489
(4AI RTD/TC/Strain Gauge Ex i).
The I/O module 750-489 shall only be installed and operated according to the
instructions in this manual and in the manual for the used fieldbus coupler or
controller.
Consider power layout of the WAGO I/O SYSTEM 750!
In addition to these operating instructions, you will also need the manual for the
used fieldbus coupler or controller, which can be downloaded at www.wago.com.
There, you can obtain important information including information on electrical
isolation, system power and supply specifications.
1.2 Revision History
Table 1: Revision History
Document
version
Device version
Change
Hardware
Firmware
1.0.0
01
01
First edition
1.1.0
01
02
Function extension: Strain Gauge

WAGO-I/O-SYSTEM 750 Notes about this Documentation 9
750-489 4AI RTD/TC/Strain Gauge Ex i
Manual
Version 1.1.0, valid from FW Version 02
1.3 Copyright
This Manual, including all figures and illustrations, is copyright-protected. Any
further use of this Manual by third parties that violate pertinent copyright
provisions is prohibited. Reproduction, translation, electronic and phototechnical
filing/archiving (e.g., photocopying) as well as any amendments require the
written consent of WAGO Kontakttechnik GmbH & Co. KG, Minden, Germany.
Non-observance will involve the right to assert damage claims.

10 Notes about this Documentation WAGO-I/O-SYSTEM 750
750-489 4AI RTD/TC/Strain Gauge Ex i
Manual
Version 1.1.0, valid from FW Version 02
1.4 Symbols
Personal Injury!
Indicates a high-risk, imminently hazardous situation which, if not avoided, will
result in death or serious injury.
Personal Injury Caused by Electric Current!
Indicates a high-risk, imminently hazardous situation which, if not avoided, will
result in death or serious injury.
Personal Injury!
Indicates a moderate-risk, potentially hazardous situation which, if not avoided,
could result in death or serious injury.
Personal Injury!
Indicates a low-risk, potentially hazardous situation which, if not avoided, may
result in minor or moderate injury.
Damage to Property!
Indicates a potentially hazardous situation which, if not avoided, may result in
damage to property.
Damage to Property Caused by Electrostatic Discharge (ESD)!
Indicates a potentially hazardous situation which, if not avoided, may result in
damage to property.
Important Note!
Indicates a potential malfunction which, if not avoided, however, will not result in
damage to property.

WAGO-I/O-SYSTEM 750 Notes about this Documentation 11
750-489 4AI RTD/TC/Strain Gauge Ex i
Manual
Version 1.1.0, valid from FW Version 02
Additional Information:
Refers to additional information which is not an integral part of this
documentation (e.g., the Internet).

12 Notes about this Documentation WAGO-I/O-SYSTEM 750
750-489 4AI RTD/TC/Strain Gauge Ex i
Manual
Version 1.1.0, valid from FW Version 02
1.5 Number Notation
Table 2: Number Notation
Number Code
Example
Note
Decimal
100
Normal notation
Hexadecimal
0x64
C notation
Binary
'100'
'0110.0100'
In quotation marks, nibble separated
with dots (.)
1.6 Font Conventions
Table 3: Font Conventions
Font Type
Indicates
italic
Names of paths and data files are marked in italic-type.
e.g.: C:\Program Files\WAGO Software
Menu
Menu items are marked in bold letters.
e.g.: Save
>
A greater-than sign between two names means the selection of a
menu item from a menu.
e.g.: File > New
Input
Designation of input or optional fields are marked in bold letters,
e.g.: Start of measurement range
“Value”
Input or selective values are marked in inverted commas.
e.g.: Enter the value “4 mA” under
Start of measurement range
.
[Button]
Pushbuttons in dialog boxes are marked with bold letters in square
brackets.
e.g.: [Input]
[Key]
Keys are marked with bold letters in square brackets.
e.g.: [F5]

WAGO-I/O-SYSTEM 750 Important Notes 13
750-489 4AI RTD/TC/Strain Gauge Ex i
Manual
Version 1.1.0, valid from FW Version 02
2 Important Notes
This section includes an overall summary of the most important safety
requirements and notes that are mentioned in each individual section. To protect
your health and prevent damage to devices as well, it is imperative to read and
carefully follow the safety guidelines.
2.1 Legal Bases
2.1.1 Subject to Changes
WAGO Kontakttechnik GmbH & Co. KG reserves the right to provide for any
alterations or modifications. WAGO Kontakttechnik GmbH & Co. KG owns all
rights arising from the granting of patents or from the legal protection of utility
patents. Third-party products are always mentioned without any reference to
patent rights. Thus, the existence of such rights cannot be excluded.
2.1.2 Personnel Qualifications
All sequences implemented on WAGO I/O SYSTEM 750 devices may only be
carried out by electrical specialists with sufficient knowledge in automation. The
specialists must be familiar with the current norms and guidelines for the devices
and automated environments.
All changes to the coupler or controller should always be carried out by qualified
personnel with sufficient skills in PLC programming.
2.1.3 Use of the 750 Series in Compliance with Underlying
Provisions
Fieldbus couplers, controllers and I/O modules found in the modular WAGO I/O
SYSTEM 750 receive digital and analog signals from sensors and transmit them
to actuators or higher-level control systems. Using controllers, the signals can
also be (pre-) processed.
The devices have been developed for use in an environment that meets the IP20
protection class criteria. Protection against finger injury and solid impurities up to
12.5 mm diameter is assured; protection against water damage is not ensured.
Unless otherwise specified, operation of the devices in wet and dusty
environments is prohibited.
Operating the WAGO I/O SYSTEM 750 devices in home applications without
further measures is only permitted if they meet the emission limits (emissions of
interference) according to EN 61000-6-3. You will find the relevant information in
the section “Device Description” > “Standards and Guidelines” in the manual for
the used fieldbus coupler or controller.
Appropriate housing (per 2014/34/EU) is required when operating the WAGO I/O
SYSTEM 750 in hazardous environments. Please note that a prototype test

14 Important Notes WAGO-I/O-SYSTEM 750
750-489 4AI RTD/TC/Strain Gauge Ex i
Manual
Version 1.1.0, valid from FW Version 02
certificate must be obtained that confirms the correct installation of the system in
a housing or switch cabinet.
The implementation of safety functions such as EMERGENCY STOP or safety
door monitoring must only be performed by the F I/O modules within the modular
WAGO I/O SYSTEM 750. Only these safe F I/O modules ensure functional safety
in accordance with the latest international standards. WAGO's interference-free
output modules can be controlled by the safety function.
2.1.4 Technical Condition of Specified Devices
The devices to be supplied ex works are equipped with hardware and software
configurations, which meet the individual application requirements. These
modules contain no parts that can be serviced or repaired by the user. The
following actions will result in the exclusion of liability on the part of WAGO
Kontakttechnik GmbH & Co. KG:
•Repairs,
•Changes to the hardware or software that are not described in the
operating instructions,
•Improper use of the components.
Further details are given in the contractual agreements. Please send your
request for modified and new hardware or software configurations directly to
WAGO Kontakttechnik GmbH & Co. KG.
2.1.4.1 Disposal
2.1.4.1.1 Electrical and Electronic Equipment
Electrical and electronic equipment may not be disposed of
with household waste. This also applies to products without
this symbol.
Electrical and electronic equipment contain materials and substances that can be
harmful to the environment and health. Electrical and electronic equipment must
be disposed of properly after use.
WEEE 2012/19/EU applies throughout Europe. Directives and laws may vary
nationally.
Environmentally friendly disposal benefits health and protects
the environment from harmful substances in electrical and
electronic equipment.

WAGO-I/O-SYSTEM 750 Important Notes 15
750-489 4AI RTD/TC/Strain Gauge Ex i
Manual
Version 1.1.0, valid from FW Version 02
• Observe national and local regulations for the disposal of electrical and
electronic equipment.
• Clear any data stored on the electrical and electronic equipment.
• Remove any added battery or memory card in the electrical and
electronic equipment.
• Have the electrical and electronic equipment sent to your local
collection point.
Improper disposal of electrical and electronic equipment can be harmful to the
environment and human health.
2.1.4.1.2 Packaging
Packaging contains materials that can be reused.
PPWD 94/62/EU and 2004/12/EU packaging guidelines apply throughout
Europe. Directives and laws may vary nationally.
Environmentally friendly disposal of the packaging protects the environment and
allows sustainable and efficient use of resources.
• Observe national and local regulations for the disposal of packaging.
• Dispose of packaging of all types that allows a high level of recovery,
reuse and recycling.
Improper disposal of packaging can be harmful to the environment and wastes
valuable resources.

16 Important Notes WAGO-I/O-SYSTEM 750
750-489 4AI RTD/TC/Strain Gauge Ex i
Manual
Version 1.1.0, valid from FW Version 02
2.2 Safety Advice (Precautions)
For installing and operating purposes of the relevant device to your system the
following safety precautions shall be observed:
Do not work on devices while energized!
All power sources to the device shall be switched off prior to performing any
installation, repair or maintenance work.
Install device in only one suitable enclosure!
The device is an open system. Install the device in a suitable enclosure. This
enclosure must:
•Guarantee that the max. permissible degree of pollution is not exceeded.
•Offer adequate protection against contact.
•Prevent fire from spreading outside of the enclosure.
•Offer adequate protection against UV irradiation.
•Guarantee mechanical stability
•Restrict access to authorized personnel and may only be opened with tools
Ensure disconnect and overcurrent protection!
The device is intended for installation in automation technology systems.
Disconnect protection is not integrated. Connected systems must be protected by
a fuse.
Provide suitable disconnect and overcurrent protection on the system side!
Ensure a standard connection!
To minimize any hazardous situations resulting in personal injury or to avoid
failures in your system, the data and power supply lines shall be installed
according to standards, with careful attention given to ensuring the correct
terminal assignment. Always adhere to the EMC directives applicable to your
application.

WAGO-I/O-SYSTEM 750 Important Notes 17
750-489 4AI RTD/TC/Strain Gauge Ex i
Manual
Version 1.1.0, valid from FW Version 02
Power from SELV/PELV power supply only!
All field signals and field supplies connected to this I/O module (750-489) must
be powered from SELV/PELV power supply(s)!
Ensure proper contact with the DIN-rail!
Proper electrical contact between the DIN-rail and device is necessary to
maintain the EMC characteristics and function of the device.
Replace defective or damaged devices!
Replace defective or damaged device/module (e.g., in the event of deformed
contacts).
Protect the components against materials having seeping and insulating
properties!
The components are not resistant to materials having seeping and insulating
properties such as: aerosols, silicones and triglycerides (found in some hand
creams). If you cannot exclude that such materials will appear in the component
environment, then install the components in an enclosure being resistant to the
above-mentioned materials. Clean tools and materials are imperative for
handling devices/modules.
Clean only with permitted materials!
Clean housing and soiled contacts with propanol.
Do not use any contact spray!
Do not use any contact spray. The spray may impair contact area functionality in
connection with contamination.
Do not reverse the polarity of connection lines!
Avoid reverse polarity of data and power supply lines, as this may damage the
devices involved.

18 Important Notes WAGO-I/O-SYSTEM 750
750-489 4AI RTD/TC/Strain Gauge Ex i
Manual
Version 1.1.0, valid from FW Version 02
Avoid electrostatic discharge!
The devices are equipped with electronic components that may be destroyed by
electrostatic discharge when touched. Please observe the safety precautions
against electrostatic discharge per DIN EN 61340-5-1/-3. When handling the
devices, please ensure that environmental factors (personnel, work space and
packaging) are properly grounded.

WAGO-I/O-SYSTEM 750 Device Description 19
750-489 4AI RTD/TC/Strain Gauge Ex i
Manual
Version 1.1.0, valid from FW Version 02
3 Device Description
The 750-489 I/O Module (4AI RTD/TC/Strain Gauge Ex i) processes signals
from sensors located in the hazardous field area of zone 0 or zone 1. Resistance
temperature devices (“RTDs”), thermocouples (“TC”), millivolt transmitters,
resistors, resistor bridges (“SG” – strain gauge), potentiometers and PTC
thermistors can be connected.
Cold junction compensation for thermal modules is channel by channel within the
I/O module.
Table 4: Input Types
RTD
Pt100, Pt200, Pt500, Pt1000
Ni100, Ni120, Ni200, Ni500, Ni1000,
Ni1000-TK5000
TC
Type: B, C, E, J, K, N, R, S, T
Resistors
0-250 Ω, 0-500 Ω, 0-1 kΩ, 0-2 kΩ,
0-4 kΩ
Resistor bridges
U
ref
: 2.4 V 1), U
d
: ±15 mV 2),
Ud: ±30 mV 2), Ud: ±60 mV 2)
Millivolt
±30 mV, ±60 mV, ±120 mV, ±250 mV,
±500 mV, ±1000 mV, ±2000 mV
Potentiometer setting
0-100 %
Thermistor
PTC
1) Settings for channel 1 and channel 3
2)
Settings for channel 2 and channel 4
Assigning the connections is described in section “Connections.” Connection
examples are given in section “Connecting Devices” > ... > “Connection
Example(s).”
One green status LED per channel indicates the operating status and error-free
local bus communication. One red error LED per channel indicates a
measurement underrange/overrange, an overflow or an underflow.
You can find details of the individual signal types in section “Process Image” >
“Process Data.”
Any I/O module configuration is possible in the design of the fieldbus node, if the
power jumper contacts are taken into account. An arrangement in blocks within
the potential group is not necessary.
The 750-489 I/O module can be used with the fieldbus couplers/controllers of the
WAGO-I/O-SYSTEM 750 listed in the “Compatibility list” table starting with the
version indicated:

20 Device Description WAGO-I/O-SYSTEM 750
750-489 4AI RTD/TC/Strain Gauge Ex i
Manual
Version 1.1.0, valid from FW Version 02
Table 5: Compatibility List 750-489
Bus System
Fieldbus Coupler/
Controller/PFC
Item No.
Firmware
Version
PROFINET Fieldbus Coupler
750-375
07
750-377
07
PROFIBUS
Fieldbus Coupler
750-333
22
Controller
750-833
21
ETHERNET
Fieldbus Coupler
750-341
09
750-342
19
750-352
14
750-362
02
750-363
03
Controller
750-823
03
750-841
21
750-842
19
750-843
03
750-852
14
750-862
02
750-871
09
750-872
05
750-873
05
750-880
14
750-881
14
750-882
14
750-885
14
750-890
02
750-891
02
750-893
03
Application Controller BA
750-884
14
PFC100
750-810x
13
PFC200
750-82xx
13
DeviceNet
Fieldbus Coupler
750-306
4M
ECO Fieldbus Coupler
750-346
11
Controller
750-806
11
CANopen
Fieldbus Coupler
750-337
22
750-338
22
ECO Fieldbus Coupler
750-347
12
750-348
12
Controller
750-837
18
750-838
18