User's Manual

EMC Directives
4 – 4 D101583 0207 BL ident
With the switch cabinet or housing:
 Missing or incorrectly wired potential equalization wiring
 Missing or incorrect earthing
 Unfavourable arrangement
 Modules which are not mounted in a fixed position
 Unfavourable switch cabinet design.
What does EMC mean?
The increasing component density, increased switching speed of
power electronics and the continuous rise in switching speeds
present more and more sources of interference to electronic
elements of a system. The following generally applies: the higher the
level of automation, the higher the danger of mutual interference.
Definition of EMC:
“Electromagnetic compatibility (EMC) is the capability of an
electrical or electronic device in an electromagnetic environment to
function without fault, without influencing or interfering with the
environment beyond defined limits.”
The TURCK BL ident devices are subjected to test compliance to
the following standards:
 EN 61000-4-2 (ESD)
 EN 61000-4-3 (Electromagnetic fields)
 EN 61000-4-4 (Burst)
 EN 61000-4-5 (Surge)
 EN 61000-4-6 (immunity to conducted disturbances induced by
radio-frequency fields)
As the RFID modules are only components of an overall system and
sources of interferences can result from the combination of different
components, the design of a system or installation must be subject
to certain guidelines.
In order to obtain an installation which is immune to interference, a
whole package of measures must be implemented; where the
operator of the system or installation is responsible for the RFI
suppression. They must observe and comply with the local and
national stipulations and directives. All measures, which have been