Designing interference-free controllers
Function Manual, 06/2014, A5E03461486-AB
5
Table of contents
Preface ................................................................................................................................................... 3
1
Documentation guide .............................................................................................................................. 6
2
Basic information on electromagnetic compatibility .................................................................................. 7
2.1
Overview of possible interference .................................................................................................. 7
2.2
Coupling mechanisms .................................................................................................................... 8
3
Interference-free cable routing ................................................................................................................ 9
3.1
Classifying cables into cable categories ........................................................................................ 9
3.2
Cable routing inside cabinets in buildings .................................................................................... 11
3.3
Cable routing outside cabinets and inside buildings .................................................................... 11
3.4
Cable routing outside buildings .................................................................................................... 12
3.5
Underground cable routing .......................................................................................................... 13
3.6
Bending radii and tensile strength of cables ................................................................................ 14
4
Cable shielding ..................................................................................................................................... 15
4.1
Connecting the cable shielding for S7-1500 and ET 200MP ....................................................... 17
4.2
Connecting the cable shielding for ET 200SP ............................................................................. 19
4.3
Connecting the cable shielding for ET 200AL .............................................................................. 20
4.4
Connecting the cable shield for bus cables ................................................................................. 21
4.5
Connecting the cable shield for other components...................................................................... 22
5
Equipotential bonding ............................................................................................................................ 23
6
Special measures for interference-free operation .................................................................................. 25
7
Lightning protection and overvoltage protection ..................................................................................... 26
7.1
What is lightning and overvoltage protection? ............................................................................. 26
7.2
Lightning protection zone concept ............................................................................................... 27
7.3
Rules and components for the transitions between lightning protection zones ........................... 29
Index..................................................................................................................................................... 37
Summary of Contents for SIMATIC ET 200AL
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