MDS-C1-SPA Series INSTRUCTION MANUALib1500152(eng)a.pdf - 第213页
Appendix 3. EMC Installation Guidelines A3 - 2 Appendix 3-1 Introduction EMC Instructions became mandatory as of January 1, 1996. The subject products must have a CE mark attached indicating that the product complies wit…
A3 - 1
Appendix 3. EMC Installation Guidelines
Appendix 3-1 Introduction ......................................................................................................................A3-2
Appendix 3-2 EMC instructions ..............................................................................................................A3-2
Appendix 3-3 EMC measures ................................................................................................................A3-3
Appendix 3-4 Measures for panel structure ...........................................................................................A3-3
Appendix 3-4-1 Measures for control panel unit.................................................................................A3-4
Appendix 3-4-2 Measures for door .....................................................................................................A3-4
Appendix 3-4-3 Measures for operation board panel .........................................................................A3-5
Appendix 3-4-4 Shielding of the power supply input section..............................................................A3-5
Appendix 3-5 Measures for various cables ............................................................................................A3-6
Appendix 3-5-1 Measures for wiring in panel .....................................................................................A3-6
Appendix 3-5-2 Measures for shield treatment...................................................................................A3-6
Appendix 3-5-3 Spindle motor power cable........................................................................................A3-7
Appendix 3-5-4 Servo motor feedback cable .....................................................................................A3-7
Appendix 3-5-5 Spindle motor power cable........................................................................................A3-8
Appendix 3-5-6 Spindle motor feedback cable...................................................................................A3-8
Appendix 3-6 EMC countermeasure parts .............................................................................................A3-9
Appendix 3-6-1 Shield clamp fitting ....................................................................................................A3-9
Appendix 3-6-2 Ferrite core ..............................................................................................................A3-10
Appendix 3-6-3 Power line filter........................................................................................................A3-11
Appendix 3-6-4 Surge protector........................................................................................................A3-16
Appendix 3. EMC Installation Guidelines
A3 - 2
Appendix 3-1 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.
These contents are the same as the EMC INSTALLATION GUIDELINES (BNP-B8582-45).
For measures for CNC, refer to "EMC INSTALLATION GUIDELINES" (BNP-B2230).
Appendix 3-2 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 as Table 1. It is assumed that the Standards and test details
required for a machine are about the same as these.
Table 1
Class Name Details
Generic
Standard
Standards for
determining test
and measurement
Radiated noise Electromagnetic noise radiated through the air
Emission
Conductive noise Electromagnetic noise discharged from power line
EN61000-6-4
EN61800-3
(Industrial
environment
)
EN55011
Static electricity
electrical discharge
Example) Withstand level of discharge of
electricity charged in a human body.
IEC61000-4-2
Radiated magnetic
field
Example) Simulation of immunity from digital
wireless transmitters
IEC61000-4-3
Burst immunity
Example) Withstand level of noise from relays or
connecting/disconnecting live wires
IEC61000-4-4
Conductive
immunity
Example) Withstand level of noise entering
through power line, etc.
IEC61000-4-6
Power supply
frequency field
Example) 50/60Hz power frequency noise
IEC61000-4-8
Power dip
(fluctuation)
Example) Power voltage drop withstand level
IEC61000-4-11
Immunity
Surge
Example) Withstand level of noise caused by
lightning
EN61000-6-2
EN61800-3
(Industrial
environment)
IEC61000-4-5
Appendix 3. EMC Installation Guidelines
A3 - 3
Appendix 3-3 EMC measures
The main items relating to EMC measures include the following.
[1] Store the device in an electrically sealed metal panel.
[2] Earth all conductors that are floating electrically. (Lower the impedance.)
[3] Wire the power line away from the signal wire.
[4] Use shielded wires for the cables wired outside of the panel.
[5] Install a noise filter.
Ensure the following items to suppress noise radiated outside of the panel.
[1] Securely install the devices.
[2] Use shielded wires.
[3] Increase the panel's electrical seal. Reduce the gap and hole size.
Note that the electromagnetic noise radiated in the air is greatly affected by the clearance of the panel
and the quality of the cable shield.
Appendix 3-4 Measures for panel structure
The design of the panel is a very important factor for the EMC measures, so take the following
measures into consideration.
Door
Control panel
Operation board panel