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