What Does Emc Mean - Siemens SIMATIC RF600 System Manual

RF600 system planning
4.8 Guidelines for electromagnetic compatibility (EMC)
● Which standards relate to EMC?
● Examples of interference-free plant design
The description is intended for "qualified personnel":
● Project engineers and planners who plan system configurations with RFID modules and
have to observe the necessary guidelines.
● Fitters and service engineers who install the connecting cables in accordance with this
description or who rectify defects in this area in the event of interference.
NOTICE
Failure to observe notices drawn to the reader's attention can result in dangerous
conditions in the plant or the destruction of individual components or the entire plant.
4.8.2

What does EMC mean?

The increasing use of electrical and electronic devices is accompanied by:
● Higher component density
● More switched power electronics
● Increasing switching rates
● Lower power consumption of components due to steeper switching edges
The higher the degree of automation, the greater the risk of interaction between devices.
Electromagnetic compatibility (EMC) is the ability of an electrical or electronic device to operate
satisfactorily in an electromagnetic environment without affecting or interfering with the
environment over and above certain limits.
EMC can be broken down into three different areas:
● Intrinsic immunity to interference:
immunity to internal electrical disturbance
● Immunity to external interference:
immunity to external electromagnetic disturbance
● Degree of interference emission:
emission of interference and its effect on the electrical environment
All three areas are considered when testing an electrical device.
The RFID modules are tested for conformity with the limit values required by the CE and RTTE
guidelines. Since the RFID modules are merely components of an overall system, and sources
of interference can arise as a result of combining different components, certain guidelines have
to be followed when setting up a plant.
EMC measures usually consist of a complete package of measures, all of which need to be
implemented in order to ensure that the plant is immune to interference.
70 System Manual, 06/2010, J31069-D0171-U001-A10-7618
Draft Version 02.06.2010
SIMATIC RF600