Introduction; Emc Instructions - Mitsubishi Electric MDS-E Series Instruction Manual

MDS-E/EH Series Instruction Manual
14 Appx. 5: EMC Installation Guidelines

14.1 Introduction

As the NC unit is a component designed to control machine tools, it is believed to be out of the direct EMC Instruction subject.
However, we would like to introduce the following measure plans to backup EMC Instruction compliance of the machine tool
as the NC unit is a major component of the machine tools.
[1] Methods for installation in control/operation panel
[2] Methods of wiring cable outside of panel
[3] Introduction of countermeasure parts
Mitsubishi is carrying out tests to confirm the compliance to the EMC Standards under the environment described in this
manual. However, the level of the noise will differ according to the equipment type and layout, control panel structure and
wiring lead-in, etc. Thus, we ask that the final noise level be confirmed by the machine tool builder.
For measures for CNC, refer to "EMC INSTALLATION GUIDELINES" of each NC Connection Manual.

14.2 EMC Instructions

The EMC Instructions regulate mainly the following two withstand levels.
Emission ..... Capacity to prevent output of obstructive noise that adversely affects external sources.
Immunity ..... Capacity not to malfunction due to obstructive noise from external sources.
The details of each level are classified in the table below. It is assumed that the Standards and test details required for a
machine tool are about the same as these.
Class Name
Radiated noise
Emission
Conductive noise
Static electricity electrical
discharge immunity test
Radiated radio-frequency magnetic
field immunity test
Electrical fast transient/burst
immunity test
Immunity to conducted disturbance
induced by radio-frequency
Immunity
magnetic field
Power supply frequency field
immunity test
Immunity test for voltage dip, short-
time power failure and voltage
fluctuation
Surge immunity test
IB-1501229-F
Details
Electromagnetic noise radiated through the air
Electromagnetic noise discharged from power
line
(Example) Withstand level of discharge of
electricity charged in a human body.
(Example) Simulation of immunity from digital
wireless transmitters
(Example) Withstand level of noise from relays
or connecting/disconnecting live wires
(Example) Withstand level of noise entering
through power line, etc.
(Example) 50/60Hz power frequency noise
(Example) Power voltage drop withstand level
(Example) Withstand level of noise caused by
lightning
498
Standards for
Generic
determining test
Standard
and measurement
EN61000-6-4
(General
industrial
machine) -----
EN61800-3
(Motor
control unit)
EN61000-4-2
EN61000-4-3
EN61000-4-4
EN61000-6-2
(General
industrial
EN61000-4-6
machine)
EN61800-3
(Motor
EN61000-4-8
control unit)
EN61000-4-11
EN61000-4-5