WAGO 750-494 Series User manual

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WAGO-I/O-SYSTEM 750
Manual
750-494(/xxx-xxx)
3-
Phase Power Measurement Module
Version 1.2.0
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2 WAGO-I/O-SYSTEM 750
750-494 3-Phase Power Measurement Module
Manual
Version 1.2.0
© 2017 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]om
Web: http://www.wago.com
Technical Support
Phone: [phone] – 5 55
Fax: [phone] – 85 55
E-Mail: [email protected]om
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: [e-mail]
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.
=== Ende d er Lis t e f ür Te xt mar ke Ei nb and _ vor n e = = =

WAGO-I/O-SYSTEM 750 Table of Contents 3
750-494 3-Phase Power Measurement Module
Manual
Version 1.2.0
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Table of Contents
1Notes about this Documentation................................................................. 6
1.1 Validity of this Documentation................................................................. 6
1.2 Revision History........................................................................................ 7
1.3 Copyright................................................................................................... 7
1.4 Symbols..................................................................................................... 8
1.5 Number Notation..................................................................................... 10
1.6 Font Conventions .................................................................................... 10
2Important Notes ......................................................................................... 11
2.1 Legal Bases ............................................................................................. 11
2.1.1 Subject to Changes ............................................................................. 11
2.1.2 Personnel Qualifications..................................................................... 11
2.1.3 Use of the WAGO-I/O-SYSTEM 750 in Compliance with
Underlying Provisions ........................................................................ 11
2.1.4 Technical Condition of Specified Devices......................................... 12
2.2 Safety Advice (Precautions).................................................................... 13
3Device Description ..................................................................................... 15
3.1 View ........................................................................................................ 16
3.2 Connectors............................................................................................... 17
3.2.1 Data Contacts/Internal Bus................................................................. 17
3.2.2 Power Jumper Contacts/Field Supply ................................................ 17
3.2.3 CAGE CLAMP®Connectors ............................................................. 18
3.3 Display Elements .................................................................................... 19
3.4 Operating Elements................................................................................. 20
3.5 Schematic Diagram ................................................................................. 21
3.6 Technical Data ........................................................................................ 23
3.6.1 Dimensions and Weight ..................................................................... 23
3.6.2 Voltage Supply ................................................................................... 23
3.6.3 Measuring Inputs................................................................................ 23
3.6.4 Measured Values ................................................................................ 24
3.6.5 Internal Bus Communication.............................................................. 25
3.6.6 Connection Type ................................................................................ 25
3.6.7 Climatic Environmental Conditions................................................... 26
3.7 Approvals ................................................................................................ 27
3.8 Standards and Guidelines........................................................................ 29
4Function Description ................................................................................. 30
4.1 Measuring Principle ................................................................................ 30
4.2 Measured Values..................................................................................... 30
4.3 Description of Measured Values............................................................. 32
4.4 Measuring Errors and Accuracy.............................................................. 38
5Process Image ............................................................................................. 40
5.1 Overview of Process Data....................................................................... 40
5.2 Output Data ............................................................................................. 41
5.2.1 Definition of Control Words .............................................................. 41
5.2.2 Definition of Output Data Words....................................................... 42
5.3 Input Data................................................................................................ 43

4 Table of Contents WAGO-I/O-SYSTEM 750
750-494 3-Phase Power Measurement Module
Manual
Version 1.2.0
5.3.1 Definition of Status Words................................................................. 43
5.3.2 Definition of Input Data Words.......................................................... 46
5.4 Process Image Descriptions .................................................................... 49
5.4.1 Building-up the Measured Values ...................................................... 54
5.5 Collections of Measured Values ............................................................. 55
5.5.1 Collection 007 – DC Measured Values.............................................. 55
5.5.2 Collection 009 – AC Measured Values.............................................. 55
5.5.3 Collection 020 – Harmonics Analysis L1 .......................................... 60
5.5.4 Collection 021 – Harmonics Analysis L2 .......................................... 61
5.5.5 Collection 022 – Harmonics Analysis L3 .......................................... 62
5.6 Examples of Calculating the Measured Values from the process
values....................................................................................................... 63
6Mounting..................................................................................................... 67
6.1 Mounting Sequence................................................................................. 67
6.2 Inserting and Removing Devices ............................................................ 68
6.2.1 Inserting the I/O Module .................................................................... 68
6.2.2 Removing the I/O Module.................................................................. 69
7Connect Devices ......................................................................................... 70
7.1 Connecting a Conductor to the CAGE CLAMP®................................... 70
7.2 Voltage Measurement ............................................................................. 71
7.3 Current Measurement.............................................................................. 72
7.3.1 Current Measurement on a Motor ...................................................... 72
7.3.2 Current Transformers ......................................................................... 73
7.3.2.1 Accuracy ........................................................................................ 73
7.3.2.2 Types of Current ............................................................................ 73
7.3.2.3 Overcurrent Limiting Factor FS .................................................... 73
7.3.2.4 Protection against Shock Hazard Voltages.................................... 74
7.3.3 Additional Measuring Instruments in the Current Path...................... 75
7.4 Power Measurement................................................................................ 76
7.4.1 Power Measurement on a Machine .................................................... 76
7.4.2 Power Measurement on Two Motors Regulated by Frequency
Converters........................................................................................... 76
8Commissioning ........................................................................................... 79
8.1 Configuration with WAGO-I/O-CHECK ............................................... 80
8.1.1 “Application“ Tab .............................................................................. 83
8.1.2 "Phase L1”, “Phase L2”, “Phase L3” Tabs ........................................ 84
8.1.3 “I/O Module“ Tab............................................................................... 85
8.1.4 “Energy“ Tab...................................................................................... 87
8.1.5 "Factory Settings" Tab ....................................................................... 88
8.2 Displaying the Measured Values via WAGO-I/O-CHECK.................... 89
9Diagnostics.................................................................................................. 99
10 Appendix................................................................................................... 100
10.1 Examples of CSV Data Files................................................................. 100
10.1.1 Snapshot ........................................................................................... 100
10.1.2 CSV Data File „Measurement Recording“....................................... 104
10.2 Factory Settings..................................................................................... 105
10.3 Register Assignment ............................................................................. 107

WAGO-I/O-SYSTEM 750 Table of Contents 5
750-494 3-Phase Power Measurement Module
Manual
Version 1.2.0
10.4 Parameter Assignment .......................................................................... 113
11 Use in Hazardous Environments ............................................................ 119
11.1 Marking Configuration Examples......................................................... 120
11.1.1 Marking for Europe According to ATEX and IEC-Ex .................... 120
11.1.2 Marking for America According to NEC 500.................................. 125
11.2 Installation Regulations......................................................................... 126
11.2.1 Special Notes Regarding Explosion Protection................................ 126
11.2.2 Special Notes Regarding ANSI/ISA Ex ........................................... 128
List of Figures .................................................................................................... 129
List of Tables...................................................................................................... 131
=== En de der Lis te für T extmar ke Verz eich nis_vor ne == =

6 Notes about this Documentation WAGO-I/O-SYSTEM 750
750-494 3-Phase Power Measurement Module
Manual
Version 1.2.0
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1 Notes about this Documentation
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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.
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1.1 Validity of this Documentation
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This documentation is only applicable to the I/O module 750-494 (3-Phase Power
Measurement Module) and the variants listed in the table below.
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Table 1: Variants
Item Number
Description
750-494
3-Phase Power Measurement Module 1 A
750-494/000-001
3-Phase Power Measurement Module 5 A
750-494/025-000
3-Phase Power Measurement Module 1 A,
Operating temperature -20 °C … +60 °C
750-494/025-001
3-Phase Power Measurement Module 5A,
Operating temperature -20 °C … +60 °C
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Documentation Validity for Variants
Unless otherwise indicated, the information given in this documentation applies to
listed variants.
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The I/O module 750-494 shall only be installed and operated according to the
instructions in this manual and in the manual for the used fieldbus
coupler/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/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.
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WAGO-I/O-SYSTEM 750 Notes about this Documentation 7
750-494 3-Phase Power Measurement Module
Manual
Version 1.2.0
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1.2 Revision History
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Table 2: Revision History
Document
Version
Device Version
Description of Change
Hardware
Software
1.0.0
01
02
First issue
1.0.1
01
02
In section „Commissioning“ >
„Displaying the Measured Values via
WAGO-I/O-CHECK“ the figure
„Measured values, harmonics chart“ was
changed.
1.1.0
01
02
Change of approvals
1.2.0
01
02
Change of approvals
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1.3 Copyright
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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.
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8 Notes about this Documentation WAGO-I/O-SYSTEM 750
750-494 3-Phase Power Measurement Module
Manual
Version 1.2.0
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1.4 Symbols
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Personal Injury!
Indicates a high-risk, imminently hazardous situation which, if not avoided, will
result in death or serious injury.
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Personal Injury Caused by Electric Current!
Indicates a high-risk, imminently hazardous situation which, if not avoided, will
result in death or serious injury.
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Personal Injury!
Indicates a moderate-risk, potentially hazardous situation which, if not avoided,
could result in death or serious injury.
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Personal Injury!
Indicates a low-risk, potentially hazardous situation which, if not avoided, may
result in minor or moderate injury.
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Damage to Property!
Indicates a potentially hazardous situation which, if not avoided, may result in
damage to property.
Pos: 17 .5.6 /Al le Seri en (All gemei ne Mod ule)/ Sicher heits- und sonstigeHi nweis e/ Ac ht ung / Ach tu ng: _War nu ng vor Sac hsc h äd en d urc h ele ktr ost atis c he Aufl a dung _ - Erl äut er ung @ 13\mod_1343310227702_21.docx@ 101044@ @ 1
Damage to Property Caused by Electrostatic Discharge (ESD)!
Indicates a potentially hazardous situation which, if not avoided, may result in
damage to property.
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Important Note!
Indicates a potential malfunction which, if not avoided, however, will not result in
damage to property.
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WAGO-I/O-SYSTEM 750 Notes about this Documentation 9
750-494 3-Phase Power Measurement Module
Manual
Version 1.2.0
Additional Information:
Refers to additional information which is not an integral part of this
documentation (e.g., the Internet).
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10 Notes about this Documentation WAGO-I/O-SYSTEM 750
750-494 3-Phase Power Measurement Module
Manual
Version 1.2.0
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1.5 Number Notation
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Table 3: 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 (.)
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1.6 Font Conventions
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Table 4: 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]
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WAGO-I/O-SYSTEM 750 Important Notes 11
750-494 3-Phase Power Measurement Module
Manual
Version 1.2.0
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2 Important Notes
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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.
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2.1 Legal Bases
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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.
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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.
Pos:20.5/Serie750(WAGO-I/O-S YST EM )/ Wi c hti g e Er lä ut er u ng en/ Bes ti mmungsgemäßeV erwendung/BestimmungsgemäßeVerwendung750-xxxx - Ü bersc hrift 3 u nd Inh alt @ 3\mod_1224064151234_21.docx@ 24070@ 3 @ 1
2.1.3 Use of the WAGO-I/O-SYSTEM 750 in Compliance with
Underlying Provisions
Fieldbus couplers, fieldbus 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 programmable
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/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

12 Important Notes WAGO-I/O-SYSTEM 750
750-494 3-Phase Power Measurement Module
Manual
Version 1.2.0
certificate must be obtained that confirms the correct installation of the system in
a housing or switch cabinet.
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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. WAGO
Kontakttechnik GmbH & Co. KG will be exempted from any liability in case of
changes in hardware or software as well as to non-compliant usage of devices.
Please send your request for modified and new hardware or software
configurations directly to WAGO Kontakttechnik GmbH & Co. KG.
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WAGO-I/O-SYSTEM 750 Important Notes 13
750-494 3-Phase Power Measurement Module
Manual
Version 1.2.0
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2.2 Safety Advice (Precautions)
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For installing and operating purposes of the relevant device to your system the
following safety precautions shall be observed:
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Install protection against electric shock!
All wiring for the measurement system shall be provided with protection against
shock hazard voltages along with the corresponding safety signs!
Pos: 20.1 1.1 / All e S eri en (Al lg em eine M o dul e)/Si ch erh eits- un d s o nsti g e H in w eis e /G ef a hr/G ef ahr : Nic ht an G er ät e n un ter S pa nnu ng ar bei te n! @ 6\mod_1260180365327_21.docx@ 46727 @ @ 1
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.
Pos: 20.1 1. 2 / S eri e 750 ( WAG O -I/O-SY STEM )/Wi cht ig e Erl äu ter ung en/Si cher hei ts- un d s o nst ig e Hi n wei se /G ef ahr / Ge fa hr: Ei nb au 0 7 50-xx xx nur i n Geh äus en, Sc hrä n ken o der el e ktris c hen Betr ie bsr ä ume n! @ 6\mod_1260180556692_21.docx@ 46731@ @ 1
Install the device only in appropriate housings, cabinets or in electrical
operation rooms!
The WAGO-I/O-SYSTEM 750 and its components are an open system. As such,
install the system and its components exclusively in appropriate housings,
cabinets or in electrical operation rooms. Allow access to such equipment and
fixtures to authorized, qualified staff only by means of specific keys or tools.
Pos: 20.1 1.3 / All e S eri en (Al lg em eine M o dul e)/Si ch erh eits- un d s o nsti g e H in w eis e /G ef a hr/G ef ahr : Unf all ver h üt ungs vor sc hr i ft en b e ach te n! @ 6\mod_1260180657000_21.docx@ 46735 @ @ 1
Pos: 20.1 1.4 / All e S eri en (Al lg em eine M o dul e)/Si ch erh eits- un d s o nsti g e H in w eis e /G ef a hr/G ef ahr : Auf nor mg er ec ht e n A ns c hl us s acht en! @ 6 \mod_1260180753479_21.docx@ 46739@ @ 1
Pos: 20.1 2 / S eri e 750 ( W AG O-I/ O-SYST EM) /Wi chtig e Er l äuter ung en /Sic her hei ts- und s o nsti ge Hin w eise /Ac ht u ng /Ac ht ung: 1A bzw. 5A Eing ang ss tr o m nic ht über sc hr eit e n! @ 15\mod_1366120670473_21.docx@ 117163@ @ 1
Note the max. continuous input current of 1 A resp. 5 A!
The max. continuous input current is 1 A resp. 5 A. If needed install additional
transformers with an appropriate transforming ratio!
Pos: 20.1 3.1 / All e S eri en (Al lg em eine M o dul e)/Si ch erh eits- un d s o nsti g e H in w eis e /A cht u ng /Ac ht u ng : D ef e kte oder bes ch ädi gt e Ger ät e austa us c h en! @ 6\mod_1260180857358_21.docx@ 46743 @ @ 1
Replace defective or damaged devices!
Replace defective or damaged device/module (e.g., in the event of deformed
contacts), since the long-term functionality of device/module involved can no
longer be ensured.
Pos: 20.1 3.2 / All e S eri en (Al lg em eine M o dul e)/Si ch erh eits- un d s o nsti g e H in w eis e /A cht u ng /Ac ht u ng : G erä te vor kri ec he n den und isol i er end en Sto ff en sc hüt ze n! @ 6\mod_1260181036216_21.docx @ 46747 @ @ 1

14 Important Notes WAGO-I/O-SYSTEM 750
750-494 3-Phase Power Measurement Module
Manual
Version 1.2.0
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.
Pos: 20.1 3.3 / All e S eri en (Al lg em eine M o dul e)/Si ch erh eits- un d s o ns tig e Hin w eise /A c ht u ng/ Ac ht u ng: R ei nig u ng n ur mit zul äss ig e n M at er ial ie n! @ 6\mod_1260181203293_21.docx@ 46751@ @ 1
Clean only with permitted materials!
Clean soiled contacts using oil-free compressed air or with ethyl alcohol and
leather cloths.
Pos: 20.1 3.4 / All e S eri en (Al lg em eine M o dul e)/Si ch erh eits- unds onstigeHinweise/Achtung/Achtung:KeinKontaktspray verwenden! @ 6\mod_1260181290808_21.docx@ 46755@ @ 1
Do not use any contact spray!
Do not use any contact spray. The spray may impair contact area functionality in
connection with contamination.
Pos: 20.1 3.5 / All e S eri en (Al lg em eine M o dul e)/Si ch erh eits- un d s o nst ig e Hin w eis e /A cht u ng /Ac ht u ng : V er pol ung en der Dat en- un d Ver sor g u ng sl eit u ng en ver m eid e n! @ 6\mod_1260184045744_21.docx@ 46767 @ @ 1
Do not reverse the polarity of connection lines!
Avoid reverse polarity of data and power supply lines, as this may damage the
devices involved.
Pos: 20.1 3.6 / All e S eri en (Al lg em eine M o dul e)/Si ch erh eits- unds onstige Hin wei se /A c ht ung /Ac ht u ng: E l e ktr ost ati sc h e En tl a dung v erm ei de n! @ 6\mod_1260181364729_21.docx @ 46759@ @ 1
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.
Pos: 21 /D oku ment ation all g emei n/ Gli e der ung s el e me nte /---Sei t e n wechs el--- @ 3\mod_1221108045078_0.docx@ 21810@ @ 1

WAGO-I/O-SYSTEM 750 Device Description 15
750-494 3-Phase Power Measurement Module
Manual
Version 1.2.0
Pos: 22 /Al l e Seri en (All g emei n e M o d ule) /Ü b er schr i f te n/ Eb ene 1/G er ät e bes chr eib ung - Ü ber sc hri f t 1 @ 3\mod_1233756084656_21.docx@ 27096@ 1 @ 1
3 Device Description
Pos: 23 /S er ie 75 0 ( WA GO -I/O-S YST EM )/ Ger ät ebes c hrei bu ng/Ei nl ei tu ng/A n alog ei nga ngs kle mm en/ Ger ät ebe schr ei bu ng - Ei nl eit u ng 750-049 4 @ 14\mod_1362587768786_21.docx@ 113861@ @ 1
The 3-phase power measurement module (also called I/O Module) measures the
electrical data in a 3-phase supply network.
The 3 phase voltages are measured via connection to L1, L2, L3 and N. The
currents are fed to IL1, IL2, IL3 and IN via current transformers. Based on these
input signals the I/O module calculates numerous values like voltages, currents,
powers (active, reactive and apparent), energies, power factors, phase shift angles
and frequencies. Furthermore, an analysis of harmonic waves is carried out up to
the 41st harmonic. The measured values are available in the process image.
Therefore, no high computing power is required from the higher-level controller.
The calculated values indicate whether the load is inductive or capacitive and
whether it consumes or generates energy. For this purpose a 4-quadrant display is
incorporated in WAGO-I/O-CHECK.
The I/O module provides a great number of measured values for a comprehensive
supply network analysis via the fieldbus. By means of the measured values the
operator can regulate the supply to a drive or machine in the best possible way
and protect the installation from damage/failure.
The I/O modules 750-494, 750-494/025-000 measure currents up to 1 A and 750-
494/000-001, 750-494/025-001 measure currents up to 5 A.
Pos: 24 /D o ku me nt ati o n al lg e mei n/ Gl ie der ung s ele m e nte/---Seit e nwe chs el--- @ 3\mod_1221108045078_0.docx @ 21810@ @ 1

16 Device Description WAGO-I/O-SYSTEM 750
750-494 3-Phase Power Measurement Module
Manual
Version 1.2.0
Pos: 25 /A ll e Ser i en ( All ge mei ne M od ule) /Ü b ersc hrif te n/ Ebe ne 2/ A nsic ht - Ü b ers chr if t 2 @ 4 \mod_1240984217343_21.docx@ 31958@ 2 @ 1
3.1 View
Pos: 26 /S erie 7 50 (WA GO -I/O-S YS T EM )/ Ger ät eb es c hr ei bu ng /A ns ic ht /A nal og ei ng a ngs kl e m men/ A ns ic h t 750-0494@ 14\mod_1362654088687_21.docx@ 113964 @ @ 1
Figure 1: View
Pos: 27 /S er ie 75 0 ( WA GO -I/O-S YST E M) /G er ät ebes c hrei bu ng /A nsic ht /A ns ic ht C ag eCl a mp® _ Leg en de mit LEDs _oh n e Lei s tu ngskontakte@ 16\mod_1371816091053_21.docx@ 124052@ @ 1
Table 5: Legend for Figure “View”
Pos.
Description
Details See Section
1
Marking possibility with
Mini-WSB
---
2
Status LEDs
“Device Description” > “Display Elements”
3
Data contacts
“Device Description” > “Connectors”
4
CAGE CLAMP®connectors
“Device Description” > “Connectors”
5
Release tab
“Mounting” > ”Inserting and Removing
Devices”
Pos: 28 /D o ku me nt ati o n al lg e mei n/ Gl ie der ung s ele m e nte /---Seit e n we chs el --- @ 3\mod_1221108045078_0.docx @ 21810@ @ 1

WAGO-I/O-SYSTEM 750 Device Description 17
750-494 3-Phase Power Measurement Module
Manual
Version 1.2.0
Pos: 29 /A ll e Ser i en ( All ge mei ne M od ule) /Ü b ersc hrif te n/ Ebe ne 2/ A nsc hlüs se - Ü ber sc hr ift 2 @ 4 \mod_1240984262656_21.docx @31961 @ 2@ 1
3.2 Connectors
Pos: 30 /S er ie 75 0 ( WA GO -I/O-S Y ST EM ) / Ger ät ebes c hr ei bu ng /A ns c hl üsse/Datenkontakte/Klemmenbus- Über sc hr if t 3 @ 6\mod_1256294684083_21.docx @ 43660@ 3@ 1
3.2.1 Data Contacts/Internal Bus
Pos:31.1/Serie750(WAGO-I/O-S YST EM ) / Ger äte b esc hr ei bu ng /A ns c hl üss e/ Da te n k ont a kt e - F el dbu s kop pler /-c on tr ol l er , A b bil d ung und Bes c hr ei bu ng @ 3 \mod_1231771259187_21.docx@ 26002@ @ 1
Communication between the fieldbus coupler/controller and the I/O modules as
well as the system supply of the I/O modules is carried out via the internal bus. It
is comprised of 6 data contacts, which are available as self-cleaning gold spring
contacts.
Figure 2: Data Contacts
Pos:31.2/Serie750(WAGO-I/O-S YST EM )/ Wi c hti g e Er lä ut er u ng en/ Si ch er h eits - u nd s ons ti g e H in wei s e/ Ac ht ung /A c h tu ng: Bus kl em m en ni c ht auf Gol df eder k ont ak t e l eg en! @ 7 \mod_1266318463636_21.docx@ 50695@ @ 1
Do not place the I/O modules on the gold spring contacts!
Do not place the I/O modules on the gold spring contacts in order to avoid soiling
or scratching!
Pos:31.3/Serie750(WAGO-I/O-S YST EM )/ Wi c hti g e Er lä ut er u ng en/ Si ch er h eits - und sonstigeHinweise/Achtung/Achtung:ESD- A uf g ut e Erd ung der Umg eb u ng ac ht e n! @ 7\mod_1266318538667_21.docx@ 50708@ @ 1
Ensure that the environment is well grounded!
The devices are equipped with electronic components that may be destroyed by
electrostatic discharge. When handling the devices, ensure that the environment
(persons, workplace and packing) is well grounded. Avoid touching conductive
components, e.g. data contacts.
Pos: 32 /S er ie 75 0 ( WA GO -I/O-S YS T EM )/ Ger ät eb esc hr ei bu ng /A ns c hl üss e/L eis t u ngs kont a kte/ F el d vers or g u ng - Ü b ersc hr if t 3 @ 6\mod_1256294692864_21.docx @ 43664@ 3@ 1
3.2.2 Power Jumper Contacts/Field Supply
Pos: 33 /S er ie 75 0 ( WA GO -I/O-S YS T EM )/ Ger ät eb esc hr ei bu ng /A ns c hl üss e/L eis t u ngs kont a kte nic ht vorh a nd en @ 8\mod_1281073936319_21. docx @ 6253 0@ @ 1
The I/O module 750-494 has no power jumper contacts.
Pos: 34 /D o ku me nt ati o n al lg e mei n/ Gl ie der ung s ele m e nte /---Seit e n we chs el --- @ 3\mod_1221108045078_0.docx@ 21810 @ @ 1

18 Device Description WAGO-I/O-SYSTEM 750
750-494 3-Phase Power Measurement Module
Manual
Version 1.2.0
Pos: 35 /S er ie 75 0 ( WA GO -I/O-S Y ST EM ) / Ger ät ebes c hr ei bu ng /A ns c hl üss e/ CA GE CL AM P-An schl üs s e - Ü b er sc hri f t 3@ 6\mod_1256296337770_21.docx@ 43674 @ 3 @ 1
3.2.3 CAGE CLAMP®Connectors
Pos: 36 /S er ie 75 0 ( WA GO -I/O-S YST E M) /G er ät ebes c hrei bu ng /A nsc hl üss e/ An al ogei ng a ngs kl em men /A nsc hl üs se 75 0-049 3,-0494CAGECLAMP @ 14\mod_1363951572599_21.docx@ 115752@ @ 1
8 CAGE CLAMP® connectors make up the measuring inputs. The 3-phase supply
network and the loads are clamped here. See also section “Connect Devices“.
Two connectors each form the three measuring channels:
•L1 and IL1: voltage and current of phase L1
•L2 and IL2: voltage and current of phase L2
•L3 and IL3: voltage and current of phase L3
Figure 3: CAGE CLAMP®Connectors
Table 6: Legend for Figure “CAGE CLAMP®Connectors”
Channel
Designation
Connector
Function
1
L1
1
Voltage L1
IL1
5
Current L1
2
L2
2
Voltage L2
IL2
6
Current L2
3
L3
3
Voltage L3
IL3
7
Current L3
−
N 4
Neutral wire for
voltage measurement
IN 8
Neutral wire for
current measurement
Pos: 37 /D o ku me nt ati o n al lg e mei n/ Gl ie der ung s ele m e nte /---Seit e n we chs el --- @ 3\mod_1221108045078_0.docx@ 21810 @ @ 1

WAGO-I/O-SYSTEM 750 Device Description 19
750-494 3-Phase Power Measurement Module
Manual
Version 1.2.0
Pos: 38 /A ll e Ser i en ( All ge mei ne M od ule) /Ü b ersc hrif te n/ Ebe ne 2/ A nzeig eel e ment e - Ü b ers chr if t 2 @ 4\mod_1240984390875_21.docx@ 31964 @ 2@ 1
3.3 Display Elements
Pos: 39 /S er ie 75 0 ( WA GO -I/O-S Y ST EM ) / Ger ät ebes c hr ei bu ng /A nz eig e el e men te / A nal og ei ng a ng s kl em m en /A nz ei g eel e me nt e 750-04 94, -0495@ 16\mod_1371738731125_21.docx@ 123880@ @ 1
LED A indicates the operating status, LEDs B … H indicate possible errors.
Figure 4: Display Elements
The meaning of these indications is as follows:
Table 7: Legend for Figure “Display Elements”
LED StateMessage
A
Off
No operational readiness or
the internal data bus communication is interrupted.
Note: If the watchdog was disabled, the LED is always
green. See section “Commissioning” > “Configuration
with WAGO-I/O-CHECK“.
Green
Operational readiness and correct internal data bus
communication
B
Off
No error
Red
General error message for L1:
Under-/overvoltage or overcurrent
C
Off
No error
Red
General error message: Clipping of a current measuring
path IL1, IL2 or IL3
D
Off
No error
Red
High measuring error, caused by undershooting the min.
voltage at L1, L2 or L3
E
Off
No error
Red
General error message for L2:
Under-/overvoltage or overcurrent
F
Off
No error
Red
General error message for L3:
Under-/overvoltage or overcurrent
G
Off
No error
Red
General error message: Clipping of a voltage measuring
path L1, L2 or L3
H
Off
No error
Yellow
Error of the phase sequence L1-L2-L3
Pos: 40 /D oku ment ation all g emei n/ Gli e der ung s el e me nte /---Sei t e n wechs el--- @ 3\mod_1221108045078_0.docx@ 21810@ @ 1

20 Device Description WAGO-I/O-SYSTEM 750
750-494 3-Phase Power Measurement Module
Manual
Version 1.2.0
Pos: 41 /A ll e Ser i en ( All ge mei ne M od ule) /Ü b ersc hrif te n/ Ebe ne 2/ B edi enel e ment e - Ü ber s chr ift 2 @ 4\mod_1239191655456_21.docx@ 30439@ 2 @ 1
3.4 Operating Elements
Pos: 42 /S er ie 75 0 ( WA GO -I/O-S YST EM )/ Ger ät ebes c hrei bu ng/B e die nel em ente/ B edi enel em e nte Buskl e mm e 75 x-xxxx nicht vorh anden @ 4\mod_1236322031125_21.docx@ 28063@ @ 1
The I/O module 750-494 has no operating elements.
Pos: 43 /D o ku me nt ati o n al lg e mei n/ Gl ie der ung s ele m e nte /---Seit e n we chs el --- @ 3\mod_1221108045078_0.docx@ 21810 @ @ 1