Chapter 13 EMC Directive
13
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1
Chapter 13 EMC Directive
13.1 Requirements for Conformance to EMC Directive
The EMC Directive specifies the products must “be so constructed that they do not cause excessive
electromagnetic interference (emissions) and are not unduly affected by electromagnetic interference (immunity)”.
The applicable products are requested to meet these requirements.
This section summarizes the precautions on conformance to the EMC Directive of the machinery assembled using
PLC XGK series. The details of these precautions are based on the requirements and the applicable standards
control. However, LSIS will not guarantee that the overall machinery manufactured according to the these details
conforms to the below-described directives. The method of conformance to the EMC directive and the judgment on
whether or not the machinery conforms to the EMC Directive must be determined finally by the manufacturer of the
machinery.
13.1.1 EMC Standard
The standards applicable to the EMC Directive are listed below.
Table13-1
Specification
Test item
Test details
Standard value
EN55011
Radiated noise
*
2
Electromagnetic emissions from the
product are measured
30~230
㎒
QP : 50
㏈㎶
/m
*
1
230~1000
㎒
QP : 57
㏈㎶
/m
EN50081-2
EN55011
Conducted noise
Electromagnetic emissions from the
product to the power line is measured
150~500
㎑
QP : 79
㏈
Mean: 66
㏈
500~230
㎒
QP : 73
㏈
Mean: 60
㏈
EN61000-4-2
Electrostatic
immunity
Immunity test in which static electricity
is applied to the case of the equipment
15
㎸
Aerial discharge
8
㎸
Contact discharge
EN61000-4-4
Fast transient
burst noise
Immunity test in which burst noise is
applied to the power line and signal
lines
Power line: 2
㎸
Digital /O : 1
㎸
Analog I/O, signal lines: 1
㎸
EN61000-4-3
Radiated field AM
modulation
Immunity test in which field is irradiated
to the product
10Vm,26~1000
㎒
80%AM modulation@ 1
㎑
EN61131-2
EN61000-4-12
Damped
oscillatory wave
immunity
Immunity test in which a damped
oscillatory wave is superimposed on
the power line
Power line: 1
㎸
Digital I/O (24V or higher): 1
㎸
*
1) QP: Quasi-peak value, Mean: Average value
*
2) The PLC 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 PLC was installed inside a
control panel.