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3. EMC DIRECTIVES AND LOW VOLTAGE DIRECTIVES
The products sold in the European countries have been required by law to comply
with the EMC Directives and Low Voltage Directives of the EU Directives since
1996 and 1997, respectively.
The manufacturers must confirm by self-declaration that their products meet the
requirements of these directives, and put the CE mark on the products.
3.1 Requirements for Compliance with EMC Directives
The EMC Directives specifies emission and immunity criteria and requires the
products to meet both of them, i.e., not to emit excessive electromagnetic
interference (emission): to be immune to electromagnetic interference outside
(immunity).
Guidelines for complying the machinery including MELSEC-QnA series
programmable controller with the EMC Directives are provided in Section 3.1.1 to
3.1.6 below.
The guidelines are created based on the requirements of the regulations and
relevant standards, however, they do not guarantee that the machinery
constructed according to them will not comply with the Directives.
Therefore, the manufacturer of the machinery must finally determine how to make
it comply with the EMC Directives: if it is actually compliant with the EMC
Directives.
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