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
1Notes 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
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................................................................................. 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
4Process 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
5Function 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
