EMC Emissions in the Machine
Industry
SCHURTER, Inc.
Christopher Peters
Motors and Drives 2016
Agenda:
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Introduction to SCHURTER
EMC & EMI Defined
European Directives
European Requirements
North America Requirements
Applicable Standards
> EN55011:2009
> FCC Title 47, Part 18
> Practical Example
January 21-22, 2015
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SCHURTER Introduction
> SCHURTER has over 75 years experience in the electronics and
electrical industries, developing and manufacturing components
that ensure clean and safe supply of power
> SCHURTER’s EMC products include:
> 1- and 3-Phase Filters, Chokes, Pulse Transformers
> Power Entry Modules with Line Filters
January 21-22, 2015
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EMC & EMI Defined:
Electro Magnetic Compatibility:
EMC
> The electro magnetic
compatibility is the ability of an
electrical device, unit or system
to function sufficiently well in its
electromagnetic environment
without interfering with the latter
in an intolerable manner
January 21-22, 2015
Electro Magnetic Interference:
EMI
> Electromagnetic energy
emanating from one device
which causes another device
to have degraded
performance
4
Sources of EMI:
Natural
Man-Made Unintentional
Man-Made Intentional
Coupling Mechanism:
Radiated
Conducted
approx. 30MHZ-1GHz
approx. 9kHz-30MHz
(SCHURTER Filter)
EMC Directive: 2004/108/EG
↯
Immunity:
> it has a level of immunity
to the electromagnetic
disturbance to be
expected in its intended
use, which allows it to
operate without
unacceptable
degradation of its
intended use
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↯
↯
January 21-22, 2015
↯
Emissions:
> the electromagnetic
disturbance generated
does not exceed the
level above which radio
and telecommunication
equipment or other
equipment cannot
operate as intended
7
European Directives:
> Basic requirements for EMC are outlined in the European
Directives:
Machines
Directive
January 21-22, 2015
EMC
Directive
2006/42/EG
Motors and Drives
2004/108/EG
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Machines Directives: 2006/42/EG
Static Electricity:
Chapter 1.5.2
• Dangerous electrostatic
discharges avoided
Radiation:
Chapter 1.5.10
• No harmful effects on
human life
External
Radiation:
Chapter 1.5.11
• Function not impaired
by external radiation
January 21-22, 2015
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Application of the Testing Standards:
> Must meet specific product standards for every
system.
> Generic standards, below, are used when specific
product standard is available
Standard
Premises
Electromagnetic
Disturbance
IEC 61000-6-1 Domestic & business premises
Immunity
IEC 61000-6-2 Industrial premises
Immunity
IEC 61000-6-3 Domestic & business premises
Emission
IEC 61000-6-4 Industrial premises
Emission
January 21-22, 2015
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Application of the Testing Standards:
> EN55011:2009 - Emissions of fixtures and fittings in
the machine industry
Standard
Premises
Electromagnetic
Disturbance
IEC 61000-6-1 Domestic & business premises
Immunity
IEC 61000-6-2 Industrial premises
Immunity
IEC 61000-6-3 Domestic & business premises
Emission
EN55011:2009
IEC 61000-6-4 Industrial premises
Emission
EN55011:2009
January 21-22, 2015
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Applicable Standard: EN 55011:2009
> Industrial, scientific and medical devices －radio
disturbance－limiting values and measurement
procedures
> (IEC/CISPR 11:2009, modified)
> The EN 55011:2009 has adopted the 5th edition of the
International standard IEC/CISPR 11 (2009) with
common European modifications
> This European standard was adopted by CENELEC in
2009
January 21-22, 2015
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The Scope: EN 55011:2009
Valid for:
> disturbance suppression of high frequency devices
> industrial, scientific, medical and domestic applications
> ISM-HF applications in the frequency range of 150 kHz to 400
Ghs
Specifies the:
> required limiting values
> disturbance field strength
> measuring procedure for test lab
January 21-22, 2015
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Class A & Class B: EN 55011:2009
Group 1
All other ISM devices
Group 2
ISM devices with HF effective
energy (9kHz-400GHz)
Class Industrial:
A
Machine Tool Controls
Industrial:
Class Domestic / Office:
B
Laboratory equipment
Medical-scientific
equipment
Domestic/ Office:
January 21-22, 2015
Electrical welding machines
Erosion machines
Microwave devices
Induction Cookers
Dielectric heaters
Medical equipment with HF
application
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Class A & Class B: EN 55011:2009
FCC 47 CFR Part 18
Class
A
Class
B
Group 1
All other ISM devices
Group 2
ISM devices with HF effective
energy (9kHz-400GHz)
Industrial:
Industrial:
Machine Tool Controls
Electrical welding machines
Erosion machines
Domestic / Office:
Domestic/ Office:
Laboratory equipment
Medical-scientific
equipment
Microwave devices
Induction Cookers
Dielectric heaters
Medical equipment with HF
application
January 21-22, 2015
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Applicable Standards: FCC
> EMC Compliance is regulated by the Federal
Communications Commission (FCC) Title 47 of the
Code of Federal Regulations (47CRF)
Part 18:
ISM Devices with
Radio Frequency
January 21-22, 2015
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EN 55011:2009 –Group 2
FCC: 47CFR Part 18
[Adopted from the international
standard IEC/CISPR 11:2009]
↯
↯
↯
↯
↯
> ISM devices with HF effective
energy (9KHz - 400GHz)
> Emission regulations
> Immunity limits
↯
↯
January 21-22, 2015
↯
> ISM devices with radio
frequency
> Emissions regulations
> No immunity limits
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Measurement Set-up
> Measurement of the disturbance voltage at the mains
supply connection with a network simulation according
to CISPR16.2 (15kHz －30MHz)
January 21-22, 2015
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Test Equipment Set-up:
January 21-22, 2015
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Limiting Values:
January 21-22, 2015
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Testing Without a Filter:
Peak
Average
January 21-22, 2015
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> Noise level
on a wide
frequency
range is
over the
limits
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Benefit of Filters:
EMI Filters Reduce
EMC Emissions
3 x 0.57 mH
January 21-22, 2015
3.3 mF
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Benefits of Single Stage Filter: FMAC ECO
Large capacitors to ground
Economical
Compact dimensions
Good Attenuation
High leakage currents to ground
January 21-22, 2015
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Differential and Common Mode Disturbances:
Differential Mode:
Idiff
L
Udiff
N
Q
Common Mode:
Icom
L
Idiff
Icom
N
E
Q
E
Ucom
PE
>
>
Disturbance flows via the phase line to
the interference receiver and via the
neutral line back to the interference
source.
Voltage between the phase and
neutral conductors can be measured.
PE
>
>
Icom
Disturbance flows via the
phase/neutral line to the interference
receiver and via ground back to the
source of interference.
Voltage between the phase/neutral
pole and earth can be measured.
Q:
E:
L:
N:
PE:
Interference source
Interference receiver
Phase
Neutral pol
Earth
Common Mode Disturbances:
P
Source of
interference
CX
N
CY
CY
E
> The attenuation is achieved by the effect of the choke L and the
two Y-capacitors. The interference current flows back through CY
via protective ground to the interference source.
Differential Mode Disturbances:
P
Source of
interference
CX
N
CY
CY
E
> The attenuation is carried out by the Capacitor CX and
the dispersion inductance (difference between the two
coils).
Testing Single Stage Filter: FMAC ECO
January 21-22, 2015
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SCHURTER Support:
> Contact SCHURTER directly
> info@schurterinc.com
> www.schurterinc.com
> Telephone: +1 (707) 636 – 3000
> 447 Aviation Blvd.
Santa Rosa, CA
95403
January 21-22, 2015
Any Questions?
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