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5. EMC DIRECTIVE, LOW VOLTAGE DIRECTIVE
5.1.1 EMC Directive
Specifications
Test Item
EN55011
Radiation noise
EN55011
Conduction noise
EN50081-2:
1995
IEC801-2
Static electricity
immunity
IEC801-3
Radiation field
IEC801-4
First transient
burst noise
EN61000-4-2
Static electricity
prEN50082-2:
immunity
1991
EN61000-4-4
First transient
burst noise
ENV50140
Radiation field
AM modulation
ENV50204
EN50082-2:
Radiation field
1995
Pulse modulation
ENV50141
Conduction noise
The following table lists standards related to the EMC Directive:
Measure waves emitted by a product.
Measure noise released by a product to
power line.
*2
Immunity test made by applying static
electricity to an equipment enclosure.
Immunity test made by applying electric
*2
field to a product.
Immunity test made by applying burst noise
to power and signal lines.
*2
Immunity test made by applying static
electricity to an equipment enclosure.
Immunity test made by applying burst noise
to power and signal lines.
Immunity test made by applying electric
field to a product.
*2
Immunity test made by applying electric
field to a product.
Immunity test made by inducing
electromagnetic field into power and
signal lines.
*1: QP: Quasi-peak value, Mean: Average value
*2: The PLC is open equipment (equipment incorporated into other apparatus) and must be
installed in a conductive control box. For the relevant test items, the tests were performed
with the PLC installed in a control box.
Test
5 - 2
MELSEC-A
Standard Values
30M-230MHz QP: 30dBμV/m
*1
(measured 30m away)
230M-1000MHz QP: 37dBμV/m
*1
(measured 30m away)
150k-500kHz
*1
QP: 79dB, Mean: 66dB
500k-30MHz
QP: 73dB, Mean: 60dB
4kV: contact discharge
8kV: air discharge
10V/m, 27-500MHz
2kV
4kV: contact discharge
8kV: air discharge
2kV
10V/m, 80-1000MHz,
80% modulation@1kHz
10V/m, 900MHz
Pulse modulation 200Hz,
50% duty
10Vrms, 0.15-80MHz,
80% modulation@1kHz
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