Requirements For Compliance With Emc Directives; Emc Standards - Mitsubishi A1SJH(S8) User Manual

9. EMC AND LOW VOLTAGE DIRECTIVES
9 EMC AND LOW VOLTAGE DIRECTIVES
The product sold in the European countries have been required by law to comply with the
EMC 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.
9.1

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-AnS series programmable controller with the EMC
Directives are provided in Section 9.1.1 to Section 9.1.7 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.
9.1.1

EMC standards

Standards related to EMC directive are described below.
Specifications
EN55011
Radiated noise
EN61000-6-4
(2001)
EN55011
Conduction noise
EN61000-4-2
Static electricity immunity
EN61000-4-4
First transient burst noise
EN61131-2/A12
(2000)
EN61000-4-12
Damped oscillatory wave
EN61000-4-3
Radiated electromagnetic field
EN61000-6-2
EN61000-4-6
(2001)
Conduction noise
Test Item
*2
Measure the emission released by
the product.
*2
Measure the emission released by
the product to the power line.
*2
Immunity test by applying static
electricity to the device enclosure.
Immunity test by applying burst
*2
noise to the power line and signal
line.
Immunity test in which a damped
*2
oscillatory wave is superimposed on
the power line.
*2
Immunity test by applying aradiated
electric field to the product.
Immunity test by inducting an
*2
electromagnetic field in the power
line and signal line.
*1 QP: Quasi-peak value, Mean : Average value
*2 The programmable controller is an open type device (device installed to another device) and
must be installed in a conductive control panel. The tests for the corresponding items were
performed while the programmable controller was installed inside the control panel.
Test Description
9 - 1
Standard Values
30 M-230 M Hz QP :
30 dB V/m (30 m measurement)
230 M-1000 M Hz QP :
30 dB V/m (30 m measurement)
150k-500kHz QP:
*1
79dB, Mean : 66 dB
500 K-30MHz QP :
*1
73dB, Mean: 60 dB
4kV contact discharge
8kV air discharge
2kV Power line
1kV Signal line
1kV
10V/m, 26-1000MHz
10V, 0.15-80MHz
*1
*1