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MELSEC-GOT
1 OVERVIEW
1.2 Requirements to match EMC Directives
EMC Directives which are among European Directives become forced.
EMC Directives are those which require "any strong electromagnetic force is not output
to the external.: Emission (electromagnetic interference)" and "It is influenced by the
electromagnetic wave from the external.: Immunity (electromagnetic sensitivity)".
Items 1.2.1 thru 1.2.3 summarize the precautions to use GOT and configure the
mechanical unit in order to match the EMC directives.
Though the data described herein are produced with our best on the basis of the
requirement items and standards of the restrictions gathered by Mitsubishi, they do not
completely guaranteed that all mechanical unit manufactured according to the data do
not always match the above directives. The manufacturer itself which manufactures
the mechanical unit must finally judge the method and others to match the EMC
directives.
1.2.1 EMC Directives
The standards of the EMC Directives are shown below.
Specifications
Test Item
Test Description
Standard Values
EN55011
Radiated noise
2
Measure the emission released by
the product.
30M-230MHz QP :
30dBµ V/m (30m
measurement)
1
230M-1000MHz QP :
37dBµ V/m (30 m
measurement)
EN50081-2:
1995
EN55011
Conduction noise
2
Measure the emission released by
the product to the power line.
150K-500kHzQP:
79dB, Mean : 66dB
1
500K-30MHz QP :
73dB, Mean: 60dB
EN61000-4-2
Static electricity immunity
2
Immunity test by applying static
electricity to the module enclosure.
±4kV contact discharge
±8kV air discharge
EN61000-4-4
First transient burst noise
2
Immunity test by applying burst
noise to the power line and signal
cable., 2kV
±2kV
ENV50140
Radiated electromagnetic
field AM modulation
2
Immunity test by applying
aradiated electric field to the
product.
10V/m, 80-1000MHz,
80% AM modulation @
1kHz
ENV50204
Radiated electromagnetic
field Pulse modulation
2
Immunity test by applying
aradiated electric field to the
product.
10V/m, 900MHz, 200Hz
pulse modulation, 50%
duty
EN50082-2:
1995
ENV50141
Conduction noise
2
Immunity test by inducting an
electromagnetic field in the power
line signal cable.
10Vrms, 0.15-80MHz,
80% modulation @ 1kHz
1 QP: Quasi-peak value, Mean: Average value
2 The GOT is an open type device (device installed to another device) and must be
installed in a conductive control pauel or cabinet.
About these test items, install the control panel, combine with a PLC from this
company, and run a test.
