Siemens S7-400 - Page 15

Contents
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S7-400 and M7-400 Programmable Controllers Hardware and Installation
A5E00069481-04
A Assembling and Installing Systems A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.1 General Rules and Regulations for Operating the S7-400 A-2. . . . . . . . . . . . .
A.2 Principles of System Installation for EMC A-5. . . . . . . . . . . . . . . . . . . . . . . . . . .
A.3 Installation of Programmable Controllers for EMC A-9. . . . . . . . . . . . . . . . . . . .
A.4 Examples of EMC-Compatible Assembly A-10. . . . . . . . . . . . . . . . . . . . . . . . . . .
A.5 Shielding Cables A-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.6 Equipotential Bonding A-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.7 Cabling Inside Buildings A-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.8 Cabling Outside Buildings A-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.9 Lightning Protection and Overvoltage Protection A-20. . . . . . . . . . . . . . . . . . . . .
A.9.1 Lightning Protection Zone Concept A-21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.9.2 Rules for the Transition between Lightning Protection Zones 0 and 1 A-23. . .
A.9.3 Rules for the Transitions between
Lightning Protection Zones 1 <-> 2 and Greater A-25. . . . . . . . . . . . . . . . . . . . . .
A.9.4 Sample of a Surge Protection Circuit for Networked S7-400 PLCs A-28. . . . . .
A.10 How to Protect Digital Output Modules against Inductive Surge A-30. . . . . . . .
A.11 Safety of Electronic Control Equipment A-32. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.12 Interference-Free Connection of Monitors A-34. . . . . . . . . . . . . . . . . . . . . . . . . . .
B Guidelines for Handling Electrostatically-Sensitive Devices (ESD) B-1. . . . . . . . . .
B.1 What is ESD? B-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B.2 Electrostatic Charging of Persons B-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B.3 General Protective Measures Against Electrostatic Discharge Damage B-4.
Glossary
Index