WAGO I/O-SYSTEM 750 User manual

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WAGO-I/O-SYSTEM 750

Manual

750-493(/xxx-xxx)

3-Phase Power Measurem

ent Module

Version 1.2.0

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2 WAGO-I/O-SYSTEM 750

750-493 3-Phase Power Measurement Module

Manual

Version 1.2.0

WAGO Kontakttechnik GmbH & Co. KG

Hansastraße 27

D-32423 Minden

Phone: +49 (0) 571/8 87 – 0

Fax: +49 (0) 571/8 87 – 1 69

E-Mail: [email protected]

Web: http://www.wago.com

Technical Support

Phone: +49 (0) 571/8 87 – 5 55

Fax: +49 (0) 571/8 87 – 85 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.

=== Ende der Lis te f ür T e xtmar ke Ei nb and _vor ne = ==

WAGO-I/O-SYSTEM 750 Table of Contents 3

750-493 3-Phase Power Measurement Module

Manual

Version 1.2.0

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Table of Contents

1 Notes about this Documentation ................................................................. 6

1.1 Validity of this Documentation ................................................................. 6

1.2 Revision History ........................................................................................ 6

1.3 Copyright ................................................................................................... 7

1.4 Symbols ..................................................................................................... 8

1.5 Number Notation ..................................................................................... 10

1.6 Font Conventions .................................................................................... 10

2 Important 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

3 Device 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 ................................................................................. 19

3.5 Schematic Diagram ................................................................................. 20

3.6 Technical Data ........................................................................................ 21

3.6.1 Dimensions and Weight ..................................................................... 21

3.6.2 Voltage Supply ................................................................................... 21

3.6.3 Measuring Inputs ................................................................................ 21

3.6.4 Measuring Signal Processing ............................................................. 22

3.6.5 Internal Bus Communication .............................................................. 22

3.6.6 Connection Type ................................................................................ 22

3.6.7 Climatic Environmental Conditions ................................................... 23

3.7 Approvals ................................................................................................ 24

3.8 Standards and Guidelines ........................................................................ 25

4 Process Image ............................................................................................. 26

4.1 Input and Output Data ............................................................................. 26

4.2 Simple Process Image ............................................................................. 27

4.3 Flexible Process Image ........................................................................... 28

4.4 Control and Status Bytes ......................................................................... 29

5 Function Description ................................................................................. 35

5.1 Measuring Principle ................................................................................ 35

5.2 Measured Values and Measured Value Calculation ............................... 35

5.3 Representation of the Measured Values in the Process Image (PI) ........ 39

5.4 Measuring Errors and Accuracy .............................................................. 46

4 Table of Contents WAGO-I/O-SYSTEM 750

750-493 3-Phase Power Measurement Module

Manual

Version 1.2.0

6 Mounting ..................................................................................................... 47

6.1 Mounting Sequence ................................................................................. 47

6.2 Inserting and Removing Devices ............................................................ 48

6.2.1 Inserting the I/O Module .................................................................... 48

6.2.2 Removing the I/O Module .................................................................. 49

7 Connect Devices ......................................................................................... 50

7.1 Connecting a Conductor to the CAGE CLAMP

®

................................... 50

7.2 Voltage Measurement ............................................................................. 51

7.3 Current Measurement .............................................................................. 52

7.3.1 Current Measurement on a Motor ...................................................... 52

7.3.2 Current Transformers ......................................................................... 53

7.3.2.1 Accuracy ........................................................................................ 53

7.3.2.2 Types of Current ............................................................................ 53

7.3.2.3 Overcurrent Limiting Factor FS .................................................... 53

7.3.2.4 Protection against Shock Hazard Voltages .................................... 54

7.3.3 Additional Measuring Instruments in the Current Path ...................... 55

7.4 Power Measurement ................................................................................ 56

7.4.1 Power Measurement on a Machine .................................................... 56

7.4.2 56

8 Commissioning ........................................................................................... 57

8.1 Configuration with WAGO-I/O-CHECK ............................................... 58

8.1.1 "Application" Tab ............................................................................... 61

8.1.2 "Phase L1”, “Phase L2”, “Phase L3” Tabs ........................................ 62

8.1.3 "I/O Module" Tab ............................................................................... 64

8.1.4 "Energy" Tab ...................................................................................... 65

8.1.5 "Factory Settings" Tab ....................................................................... 66

8.1.6 Register Assignment ........................................................................... 67

8.2 Displaying the Measured Values via WAGO-I/O-CHECK .................... 70

9 Diagnostics .................................................................................................. 77

10 Appendix ..................................................................................................... 78

10.1 CSV Data File “Snapshot” ...................................................................... 78

10.2 CSV Data File “Measurement Recording” ............................................. 80

11 Use in Hazardous Environments .............................................................. 81

11.1 Marking Configuration Examples ........................................................... 82

11.1.1 Marking for Europe According to ATEX and IEC-Ex ...................... 82

11.1.2 Marking for America According to NEC 500 .................................... 87

11.2 Installation Regulations ........................................................................... 88

11.2.1 Special Conditions for Safe Use (ATEX Certificate TÜV 07 ATEX

554086 X) ........................................................................................... 89

11.2.2 Special Conditions for Safe Use (ATEX Certificate TÜV 12 ATEX

106032 X) ........................................................................................... 90

11.2.3 Special Conditions for Safe Use (IEC-Ex Certificate TUN 09.0001 X)91

11.2.4 Special Conditions for Safe Use (IEC-Ex Certificate IECEx TUN

12.0039 X) .......................................................................................... 92

11.2.5 Special Conditions for Safe Use According to ANSI/ISA 12.12.01 .. 93

List of Figures ...................................................................................................... 94

WAGO-I/O-SYSTEM 750 Table of Contents 5

750-493 3-Phase Power Measurement Module

Manual

Version 1.2.0

List of Tables ........................................................................................................ 95

=== Ende der Lis te f ür T e xtmar ke V erz eic hnis _vor ne == =

6 Notes about this Documentation WAGO-I/O-SYSTEM 750

750-493 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 750-493 (3-Phase Power

Measurement Module) and the variants listed in the table below.

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Table 1: Variants

Item Number

Description

750-493

3-Phase Power Measurement Module 1 A

750-493/000-001

3-Phase Power Measurement Module 5 A

750-493/025-000

3-Phase Power Measurement Module 1 A,

Operating temperature -20 °C … +60 °C

750-493/025-001

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 750-493 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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1.2 Revision History

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WAGO-I/O-SYSTEM 750 Notes about this Documentation 7

750-493 3-Phase Power Measurement Module

Manual

Version 1.2.0

Table 2: Revision History

Document

Version

Device Version

Description of Change

Hardware

Software

1.0.1

‒

First issue

1.1.0

≥ 20

≥ 01

Total revision with new layout

1.2.0

≥ 20

≥ 01

Variants

750-493

/025-000 and

750-493

/025-

001 for extended temperature range added.

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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.

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8 Notes about this Documentation WAGO-I/O-SYSTEM 750

750-493 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.

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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

750-493 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

750-493 3-Phase Power Measurement Module

Manual

Version 1.2.0

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1.5 Number Notation

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

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

750-493 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 that serve to increase the efficiency of technical

progress. 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.

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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.

12 Important Notes WAGO-I/O-SYSTEM 750

750-493 3-Phase Power Measurement Module

Manual

Version 1.2.0

Appropriate housing (per 94/9/EG) is required when operating the WAGO-I/O-

SYSTEM 750 in hazardous environments. Please note that a prototype test

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

750-493 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!

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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.

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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: 19.1 1. 3 /Al le S eri en ( Allg em ein e Do ku ment e) (Al lg em eine M o dul e)/ Wich tig e Erl äuter u ngen /Sic h erhei ts hinw eise /G efahr /G efahr : U nfal l verh ütung sv orsc hri ft en b eachten! @ 6\mod_1260180657000_21.doc x @ 46735 @ @ 1

Pos: 19.1 1. 4 /Al le S eri en ( Allg em ein e Do ku ment e) (Al lg em eine M o dul e)/ Wich tig e Erl äuter u ngen /Sic h erhei ts hinw eise /G efahr /G efahr : A uf normg er echt e n Ansc hlu ss ac hten! @ 6 \mod_1260180753479_21.docx @ 46739 @ @ 1

Pos: 19.1 2 / Ser ie 7 50 ( WAG O-I/ O-SYST EM )/ Wichti g e Erl äuter ung en /Sic her hei ts- und s ons tige Hi nwei se /Acht u ng/Ac ht ung: Kei n d auer haf ter Eing ang sst rom über 1 A bz w.5A 75 0-0493/0494/Achtung: Kein Eingangsstrom über 1A bzw.5A, 750-0493/0494/0495 @ 15\mod_1366120670473_21.docx @ 117163 @ @ 1

Note the max. continuous measuring current of 1 A resp. 5 A!

The max. continuous measuring current of the module is 1 A resp. 5 A. If the

used current transformers allow greater secondary currents than 1 A resp. 5 A

install additional transformers with an appropriate transforming ratio!

Pos: 19.1 3. 1 /Al le S eri en ( Allg em ein e Do ku ment e) (Al lg emein e Modul e)/ Wichti ge Erlä uteru ngen/Si ch erheits hinw eise/A chtu ng/Ac htung : Defek te oder besch ädigt e Gerät e austaus chen! @ 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: 19.13.2 /Alle Serien (Allgemeine Dokumente) (Allgemeine Module)/Wichtige Erläuterungen/Sicherheitshinweise/Ac htung/Achtung: Geräte vor kriec hende n und is olier enden Stoffen s chüt zen! @ 6\mod_1260181036216_21.docx @ 46747 @ @ 1

14 Important Notes WAGO-I/O-SYSTEM 750

750-493 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: 19.1 3. 3 /Al le S eri en ( Allg em ein e Do ku ment e) (Al lg em eine M o dul e)/ Wich tig e Erl äuter u ngen /Sic h erhei ts hinw eise /Ac htu ng/A cht ung : Rei nig ung nur mi t zul äss ig en M at erial ien! @ 6\mod_1260181203293_21.doc x @ 46751 @ @ 1

Clean only with permitted materials!

Clean soiled contacts using oil-free compressed air or with ethyl alcohol and

leather cloths.

Pos: 19.1 3. 4 /Al le S eri en ( Allg em ein e Do ku ment e) (Al lg em eine M o dul e)/ Wich tig e Erl äuter u ngen /Sic h erhei ts hinw eise /Ac htu ng/A cht ung : K ein K ont a ktspra y verw end en! @ 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: 19.1 3. 5 /Al le S eri en ( Allg em ein e Do ku ment e) (Al lg em eine M o dul e)/ Wich tig e Erl äuter u ngen /Sic h erhei ts hinw eise /Ac htu ng/A cht ung : V erpol ung ver mei de n! @ 6\mod_1260184045744_21.doc x @ 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: 19.1 3. 6 /Al le S eri en ( Allg em ein e Do ku ment e) (Al lg em eine M o dul e)/ Wich tig e Erl äuter u ngen /Sic h erhei ts hinw eise /Ac htu ng/A cht ung : El ektr ost atis ch e Entl a dung vermei den! @ 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: 20 /Doku ment ation all gemei n/Gli eder ungsel eme nte/---Seit en wechs el--- @ 3\mod_1221108045078_0.doc x @ 21810 @ @ 1

WAGO-I/O-SYSTEM 750 Device Description 15

750-493 3-Phase Power Measurement Module

Manual

Version 1.2.0

Pos: 21 /A ll e Ser ien (Al lg emei ne M od ule)/ Üb ers chrif te n für al le S eri en/G erä teb esc hrei bu ng/G erätebeschreibung - Ü bersc hrift 1 @ 3\mod_1233756084656_21.docx @ 27096 @ 1 @ 1

3 Device Description

Pos: 22 /S eri e 7 50 ( WA GO-I/ O-SYST EM) /Ger ät ebesc hrei bu ng/Ei nlei tu ng/A nalog ei ngang s klemm en/G erä tebe schr eib ung - Einl eit ung 750- 049 3 @ 13\mod_1346315482161_21.docx @ 102130 @ @ 1

The 3-phase power measurement module (also called I/O module) measures the

electrical data in a 3-phase supply network.

The voltages of the three phases are measured via network connection to L1, L2,

L3 and N. The currents are fed to IL1, IL2, IL3 and IN via current transformers.

The μC unit of the I/O module transmits the RMS (root mean square) values into

the process image. Therefore, no high computing power is required from the

controller. For each phase, the active power (P) and the energy consumption (W)

are calculated by the I/O module using the root mean square values of all

measured voltages (V) and currents (I).

For example, both the apparent power (S) and phase shift angle (phi) can easily be

derived from these values.

Thus, the I/O module provides a comprehensive network analysis via the fieldbus.

By means of values such as voltage, current, active and apparent power

consumption or load condition, the operator can regulate the supply to a drive or

machine in the best possible way and protect the installation from damage or

failure.

The I/O modules 750-493 and 750-493/025-000 measure currents up to 1 A and

the modules 750-493/000-001 and 750-493/025-001 measure up to 5 A.

Pos: 23 /Doku ment ation all gemei n/Gli eder ungsel eme nte/---Seit en wechs el--- @ 3\mod_1221108045078_0.doc x @ 21810 @ @ 1

16 Device Description WAGO-I/O-SYSTEM 750

750-493 3-Phase Power Measurement Module

Manual

Version 1.2.0

Pos: 24 /A ll e Ser ien (Al lg emei ne M od ule)/ Üb ers chrif te n für al le S eri en/G erä teb esc hrei bu ng/A nsic ht - Ü b erschr if t 2 @ 4\ mod_1240984217343_21.docx @ 31958 @ 2 @ 1

3.1 View

Pos: 25 /S eri e 7 50 ( WA GO-I/ O-SYST EM)/ Gerät ebesc hrei bung/A nsic ht/A nalogei nga ngskle mmen/ Ansic ht 750-0493 - Ab b. @ 13\mod_1346331472304_21.doc x @ 102153 @ @ 1

Figure 1: View

Pos: 26 /S eri e 7 50 ( WA GO-I/ O-SYST EM)/ Gerät ebesc hrei bung/A nsic ht/A nsicht C ageCl amp® _Leg ende mit LED s_ ohne Leis tung skont akte @ 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”

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WAGO-I/O-SYSTEM 750 Device Description 17

750-493 3-Phase Power Measurement Module

Manual

Version 1.2.0

Pos: 28 /A ll e Ser ien (Al lg emei ne M od ule)/ Üb ers chrif te n für al le S eri en/Gerätebeschreibung/Anschlüsse - Über schri ft 2 @ 4\mod_1240984262656_21.docx @ 31961 @ 2 @ 1

3.2 Connectors

Pos: 29 /S eri e 7 50 ( WA GO-I/ O-SYST EM) /Ger ät ebesc hrei bu ng/A nsc hlüss e/D ate nko ntakt e/Kl em menbu s - Ü bersc hrift 3 @ 6\mod_1256294684083_21.doc x @ 43660 @ 3 @ 1

3.2.1 Data Contacts/Internal Bus

Pos: 30.1 /Serie 750 (WAGO-I/O-SYST EM) /Ger äte besc hrei bu ng/A nsc hlüss e/D ate nkon takt e - F eldbu sko ppler /-c ontr oll er, A bbi ld ung und Besc hrei bu ng @ 3\mod_1231771259187_21.doc x @ 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: 30.2 /Serie 750 (WAGO-I/O-SYST EM)/ Wic htige Erl äuter unge n/Sic herhei ts- und sonstige Hinweise/Achtung/Achtung: Buskl emmen nicht auf Gol dfe der kont akt e leg 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: 30.3 /Serie 750 (WAGO-I/O-SYST EM)/ Wic htige Erl äuter unge n/Sic herhei ts- und sonstige Hinweise/Achtung/Achtung: ESD - Auf g ute Erd ung der Umg ebu ng ac hten! @ 7\mod_1266318538667_21.doc x @ 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: 31 /S eri e 7 50 ( WA GO-I/ O-SYST EM) /Ger ät ebesc hrei bu ng/A nsc hlüss e/L eist ung skont akt e/F eld vers orgu ng - Üb ersc hrift 3 @ 6\ mod_1256294692864_21.docx @ 43664 @ 3 @ 1

3.2.2 Power Jumper Contacts/Field Supply

Pos: 32 /S eri e 7 50 ( WA GO-I/ O-SYST EM) /G erät eb esc hrei bung /Ans chl üss e/L eist ung s kont akte nic ht vorh and en @ 8\ mod_1281073936319_21.doc x @ 62530 @ @ 1

The I/O module 750-493 has no power jumper contacts.

Pos: 33 /Doku ment ation all gemei n/Gli eder ungsel eme nte/---Seit en wechs el--- @ 3\mod_1221108045078_0.doc x @ 21810 @ @ 1

18 Device Description WAGO-I/O-SYSTEM 750

750-493 3-Phase Power Measurement Module

Manual

Version 1.2.0

Pos: 34 /S eri e 7 50 ( WA GO-I/ O-SYST EM) /G erät eb esc hrei bung /Ans chl üss e/C AGE CL AMP- Ans chlüs se - Ü b erschr if t 3 @ 6 \mod_1256296337770_21.docx @ 43674 @ 3 @ 1

3.2.3 CAGE CLAMP

®

Connectors

Pos: 35 /S eri e 7 50 ( WA GO-I/ O-SYST EM) /G erät eb esc hrei bung /Ans chl üss e/A nal ogei ng ang skle mm en/A nsc hlü sse 7 50- 049 3,-0494 CAGE CLAMP @ 14\mod_1363951572599_21.doc x @ 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

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WAGO-I/O-SYSTEM 750 Device Description 19

750-493 3-Phase Power Measurement Module

Manual

Version 1.2.0

Pos: 37 /A ll e Ser ien (Al lg emei ne M od ule)/ Üb ers chrif te n für al le S eri en/G erä teb esc hrei bu ng/A nzei geel em ente - Über schr ift 2 @ 4\mod_1240984390875_21.docx @ 31964 @ 2 @ 1

3.3 Display Elements

Pos: 38 /S eri e 7 50 ( WA GO-I/ O-SYST EM)/ Gerät ebesc hrei bung/A nzei geele mente /Anal ogei ngang sklem men/A nzeig eele mente 7 50-0493 @ 13\mod_1348655994627_21.docx @ 103538 @ @ 1

8 LEDs A … H are used to indicate the operating status and possible errors.

The meaning of these indications is listed in section „Diagnostics“.

Figure 4: LED-indicators

Pos: 39 /A ll e Ser ien (Al lg emei ne M od ule)/ Üb ers chrif te n für al le S eri en/G erä teb esc hrei bu ng/B edi enel eme nte - Üb ersc hrif t 2 @ 4 \mod_1239191655456_21.docx @ 30439 @ 2 @ 1

3.4 Operating Elements

Pos: 40 /Serie 750 (WAGO-I/O-SYST EM )/ Ger äteb esc hrei bung /B edie nel em ente/ Bedi en el ement e Buskl em me 7 50- xxxx nicht vor hande n @ 4\mod_1236322031125_21.docx @ 28063 @ @ 1

The I/O module 750-493 has no operating elements.

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20 Device Description WAGO-I/O-SYSTEM 750

750-493 3-Phase Power Measurement Module

Manual

Version 1.2.0

Pos: 42 /A ll e Ser ien (Al lg emei ne M od ule)/ Üb ers chrif te n für al le S eri en/G erä teb esc hrei bu ng/Sc he mati sch es S ch altbi ld - Über schr ift 2 @ 4\mod_1240984441312_21.docx @ 31967 @ 2 @ 1

3.5 Schematic Diagram

Pos: 43 /S eri e 7 50 ( WA GO-I/ O-SYST EM) /G erät eb esc hrei bung /Sc he mati sche Sc hal tbil der/ Anal og eing ang skl em men/ Sc hemat isc hes Sc halt bild 75 0-0 493 @ 13\mod_1348574311920_21.doc x @ 103381 @ @ 1

Figure 5: Schematic Diagram

Function Earth FE!

In order to get a function earth, the connections N and IN are connected to the

mounting rail via a 1 nF capacitor and a spring contact. If the rail is correctly

connected to PE, the immunity to interference is increased.