Emc Directive And Low-Voltage Instruction; Requirements For Compliance To Emc Directive (89/336/Eec); Emc Standards - Mitsubishi A1SJH User Manual

9. EMC DIRECTIVE AND LOW-VOLTAGE INSTRUCTION

9. EMC DIRECTIVE AND LOW-VOLTAGE INSTRUCTION
9.1

Requirements for Compliance to EMC Directive (89/336/EEC)

9.1.1

EMC standards

Specifications
EN55011
Radiated noise
EN55011
Conduction noise
EN50081-2 : 1995
IEC801-2
Static electricity immunity *2
prEN50082-2 : 1991 IEC801-3
Radiated electromagnetic field *2
IEC801-4
First transient burst noise
EN61000-4-2
Static electricity immunity *2
EN61000-4-4
First transient burst noise
EN50082-2 : 1995 ENV50140
Radiated electromagnetic field
AM modulation *2
ENV50204
Radiated electromagnetic field
Pulse modulation *2
ENV50141
Conduction noise
The EMC Directive (89/336/EEC) will become mandatory within Europe from
January 1st 1996. The EMC directive in essence defines the amount of
electromagnetic output a product is allowed to produce and how susceptible that
product is to electromagnetic interference. Any manufacturer or importer of
electrical/electronic apparatus must before releasing or selling products within
Europe after that date have either a CE mark attached to their goods. Testing to
comply with the directive is done by use of agreed European standards which
define limits for radiated and mains conducted electromagnetic emissions from
equipment, levels of immunity to radiated emissions, ability for equipment to cope
with transient voltage surges and electro-static discharges.
When installed in the specified manner this unit will be compliant with the relevant
standards EN50081-2 and prEN50082-2 as applicable in the EMC directive. Failure
to comply with these instructions could lead to impaired EMC performance of the
equipment and as such Mitsubishi Electric Corporation can accept no liability for
such actions.
When the PLC is installed following the directions given in this manual its EMC
performance is compliant to the following standards and levels as required by the
EMC directive.
Test Item
Measure the electric wave
released by the product.
Measure the noise released
by the product to the power
line.
Immunity test by applying
static electricity to the
module enclosure.
Immunity test by radiating an
electric field to the product.
Immunity test by applying
burst noise to the power line
and signal cable.
Immunity test by applying
static electricity to the
module enclosure.
Immunity test by applying
burst noise to the power line
and signal cable., 2 k V
Immunity test by radiating an
electric field to the product.
Immunity test by radiating an
electric field to the product.
Immunity test by inducting
electromagnetic field to the
power line signal cable.
(*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 box.
The tests for the corresponding items were performed while the PLC was
installed to inside the control box.
Test Description
30 M-230 M Hz QP : 30 dBµ V/m (30 m measurement) *1
230 M-1000 M Hz QP : 37 dBµ V/m (30 m measurement)
150 K-500k Hz QP: 79 dB, Mean : 66 dB *1
500 K-30M Hz QP : 73 dB, Mean: 60 dB
4 k V contact discharge
8 k V air discharge
10 V/m, 27-500 M Hz
2 k V
4 k V contact discharge
8 k V air discharge
2 k V
10 V/m, 80-1000 M Hz, 80 % AM modulation@1 k
Hz
10 V/m, 900 M Hz, 200 Hz pulse modulation, 50 %
duty
10 Vrms, 0.15-80 M Hz, 80 % modulation@1 k Hz
9 - 1
MELSEC-A
Standard Values