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What Does Emc Mean - Siemens SIMATIC Ident System Manual

Identification rfid systems.
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Planning the RF300 system
4.5 Guidelines for electromagnetic compatibility (EMC)
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.
Note
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.
4.5.2

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:
● Internal immunity to interference:
Immunity to internal (own) electrical disturbance
● External immunity to interference:
Immunity to external electromagnetic disturbances
● 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
R&TTE directives. 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
directives have to be followed when setting up a plant.
100
System Manual, 07/2016, C79000-G8976-C345-0x
SIMATIC RF300

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