Appendix 4-1 Introduction; Appendix 4-2 Emc Instructions - Mitsubishi Electric MELDAS MDS-R Series Specifications And Instruction Manual

Appendix 4-1 Introduction

EMC Instructions became mandatory as of January 1, 1996. The subject products must have a CE mark
attached indicating that the product complies with the Instructions.
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 manufacturer.
For measures for CNC, refer to "EMC INSTALLATION GUIDELINES" (BNP-B2230).

Appendix 4-2 EMC instructions

The EMC Instructions regulate mainly the following two withstand levels.
Emission ..... Capacity to prevent output of obstructive noise that adversely affects external
Immunity ..... Capacity not to malfunction due to obstructive noise from external sources.
The details of each level are classified as Table 1. It is assumed that the Standards and test details
required for a machine are about the same as these.
Class
Emission
Immunity
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Appendix 4. EMC Installation Guidelines
sources.
Name
Radiated noise Electromagnetic noise radiated through the air
Conductive noise Electromagnetic noise discharged from power line
Static electricity
Example) Withstand level of discharge of
electrical discharge
Radiated magnetic Example) Simulation of immunity from digital
field
Example) Withstand level of noise from relays or
Burst immunity
Conductive Example) Withstand level of noise entering
immunity
Power supply
Example) 50/60Hz power frequency noise
frequency field
Power dip
Example) Power voltage drop withstand level
(fluctuation)
Example) Withstand level of noise caused by
Surge
search engine
Table 1
Details
electricity charged in a human body.
wireless transmitters
connecting/disconnecting live wires
through power line, etc.
lightning
A4 - 2
Standards for
Generic
determining test
Standard
and measurement
EN61000-6-4
EN61800-3
EN55011
(Industrial
environment)
IEC61000-4-2
IEC61000-4-3
IEC61000-4-4
EN61000-6-2
EN61800-3
IEC61000-4-6
(Industrial
environment)
IEC61000-4-8
IEC61000-4-11
IEC61000-4-5