Installation Guidelines

3.1Principles of Installation of Systems for EMC

What Does EMC Electromagnetic compatibility (EMC) is understood to mean the capability of

Mean?electrical equipment to operate correctly in a defined electromagnetic environment, without being affected by the environment and without affecting the environment to an unacceptable degree.

All SIMATIC S5 products have been developed for applications in harsh industrial environments and meet high requirements for EMC. Before installing the control system, however, you should still carry out EMC planning and involve possible interference sources in the assessment.

Described in the following chapter are

Sthe various paths over which interference can be picked up in the PLC,

Stypical interference sources and their coupling mechanisms,

Sbasic rules for ensuring EMC.

3.1.1Overview of Possible Types of Interference

Electromagnetic interference can be picked up over different paths by the programmable controller:

 

 

Fields

 

SINEC Bus System

Programmable

I/O Signal Lines

 

 

Controller

 

 

 

Power Supply

 

 

 

Protective Conductor

 

Figure 3-1

Electromagnetic Interference with Programmable Controllers

 

3-2

System Manual

C79000-G8576-C199-06

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Image 28
Siemens S5-135U/155U appendix Principles of Installation of Systems for EMC, Overview of Possible Types of Interference