Introduction; Emc Directives - Mitsubishi Electric M800W Series Connection And Set Up Manual

M800W/M80W Series Connection and Setup Manual
41 Appx.4: EMC Installation Guidelines
For details of the drive section (servo/spindle drive unit), refer to "EMC Installation Guidelines" of instruction manuals for
each drive unit.

41.1 Introduction

EMC Directives became mandatory as of January 1, 1996. The subject products must have a CE mark attached
indicating that the product complies with the Directives.
As the NC unit is a component designed to control machine tools, we believe that it is not a direct EMC Directives
subject. However, we would like to introduce the following measure plans to back up EMC Directives compliance of the
machine tool as the NC unit is a major component of the machine tools.
(1) Methods of installation in control/operation panel
(2) Methods of wiring cables to outside of panel
(3) Introduction of members for measures
Mitsubishi is carrying out tests to confirm the compliance to the EMC Directives under the environment described in this
manual. However, the level of the noise varies depending on the equipment type and layout, control panel structure and
wiring lead-in, etc.
Thus, we ask that the machine tool builder for confirming the final noise level.

41.2 EMC Directives

The items that the EMC Directives regulate can be roughly divided into the following two types.
- Emission: Capacity to prevent output of obstructive noise that adversely affects external devices
- Immunity: Capacity to not malfunction due to obstructive noise from external source
Contents of the regulation are summarized in the table below.
We assume that the standards and test contents required for a machine tool are almost the same as the following.
Class Name
Emission
Radiated noise
Conductive noise
Immunity
Static electricity
electrical discharge
Radiation immunity
Burst immunity
Conductive immunity
Power supply
frequency magnetic
field
Power supply dip
(fluctuation)
Surge
IB-1501268-K
Details
Restriction of electromagnetic noise radiated through
the air
Restriction of electromagnetic noise discharged from
power supply line
(Example) Regulation of withstand level of static
electricity electrical discharge accumulated in human
body
(Example) Simulation of immunity from digital
wireless telephones
(Example) Regulation of withstand level of noise from
relay or plug and play
(Example) Regulation of withstand level of noise
flowed from power supply wires, etc.
(Example) Regulation of electromagnetic noise of 50/
60Hz power supply frequency
(Example) Regulation of power voltage drop
withstand level
(Example) Regulation of withstand level of noise
caused by lightning
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EN Standards
EN61000-6-4 (General
industrial machine) EN55011
EN61800-3 (Motor (CLASS: A)
control unit)
EN61000-4-2
EN61000-4-3
EN61000-4-4
EN61000-6-2 (General
industrial machine)
EN61000-4-6
EN61800-3 (Motor
control unit)
EN61000-4-8
EN61000-4-11
EN61000-4-5