Assembling and Installing Systems
A-5
S7-400 and M7-400 Programmable Controllers Hardware and Installation
A5E00069481-04
A.2
Principles of System Installation for EMC
Definition: EMC
EMC (electromagnetic compatibility) describes the capability of electrical apparatus
to operate without faults in a given electromagnetic environment, without being
affected by the environment and without affecting it in an unacceptable manner.
Introduction
Although the S7-400 and its components were developed for operation in an
industrial environment and meet high EMC requirements, you should carry out
EMC planning before installing your control system, taking possible interference
sources into account and incorporating them in your observations.
Possible Effects of Interference
Electromagnetic interference can affect the programmable controller in different
ways:
•
Electromagnetic fields which directly affect the system
•
Interference picked up via bus signals (PROFIBUS DP, etc.)
•
Interference acting via the process wiring
•
Interference reaching the system via the power supply and/or protective ground
Figure A-1 shows the possible routes for electromagnetic interference.
Electromagnetic
fields
Bus signal
Process wiring
Protective ground
Power supply module
Figure A-1
The Possible Routes for Electromagnetic Interference
Содержание Simatic M7-400
Страница 10: ...Preface x S7 400 and M7 400 Programmable Controllers Hardware and Installation A5E00069481 04 ...
Страница 20: ...Contents xx S7 400 and M7 400 Programmable Controllers Hardware and Installation A5E00069481 04 ...
Страница 66: ...Installing the S7 400 2 40 S7 400 and M7 400 Programmable Controllers Hardware and Installation A5E00069481 04 ...
Страница 74: ...Addressing the S7 400 3 8 S7 400 and M7 400 Programmable Controllers Hardware and Installation A5E00069481 04 ...
Страница 118: ......
Страница 170: ...Starting Up 6 20 S7 400 and M7 400 Programmable Controllers Hardware and Installation A5E00069481 04 ...
Страница 194: ...Maintenance 7 24 S7 400 and M7 400 Programmable Controllers Hardware and Installation A5E00069481 04 ...
Страница 252: ...Assembling the M7 400 8 58 S7 400 and M7 400 Programmable Controllers Hardware and Installation A5E00069481 04 ...
Страница 310: ...Glossary Glossary 18 S7 400 and M7 400 Programmable Controllers Hardware and Installation A5E00069481 04 ...
Страница 316: ...Index Index 6 S7 400 and M7 400 Programmable Controllers Hardware and Installation A5E00069481 04 ...