EN 50370-1:2005

Electromagnetic compatibility (EMC) - Product family standard for machine tools - Part 1: Emission

This standard deals with the electromagnetic emission (radio frequency protection) of machine tools, excluding electro discharge machines (EDM), designed exclusively for industrial and similar purposes that use electricity, the rated voltage of the machine tool not exceeding 1 000 V AC or 1 500 V DC between lines. Machine tools may incorporate motors, heating elements or their combination, may contain electric or electronic circuitry, and may be powered by the mains, or any other electrical power source. This standard does not cover fixed installations as defined in the Guide to the Application of Directive 89/336/EEC, published by the European Commission. Emission requirements in the frequency range 9 kHz to 400 GHz are covered. No measurements need to be performed at frequencies where no requirements are specified.

Elektromagnetische Verträglichkeit (EMV) - Produktfamiliennorm für Werkzeugmaschinen - Teil 1: Störaussendung

Diese Norm gilt für elektromagnetische Störaussendungen (Schutz von Funkfrequenzen) von Werkzeug-maschinen mit Ausnahme von Funkenerosions- und Elektroentladungsmaschinen (EDM), die ausschließlich für industrielle und ähnliche Anwendungen bestimmt sind, Elektrizität benutzen und deren Nennbetriebsspannung 1 000 V Wechselspannung oder 1 500 V Gleichspannung zwischen den Versorgungsleitungen nicht überschreitet. Werkzeugmaschinen können Motoren, Heizungselemente oder deren Kombination enthalten; sie können elektrische oder elektronische Schaltungen enthalten und können aus dem Stromversorgungsnetz oder beliebigen anderen Stromquellen versorgt werden. Diese Norm gilt nicht für ortsfeste Anlagen, wie sie im von der Europäischen Kommission herausgegebenen Leitfaden zur Anwendung der Richtlinie 89/336/EWG des Rates vom 3. Mai 1989 zur Angleichung der Rechtsvorschriften der Mitgliedstaaten über die elektromagnetische Verträglichkeit definiert sind. Die Anforderungen an die elektromagnetische Störaussendung gelten im Frequenzbereich von 9 KHz bis 400 GHz. Messungen der Störaussendung sind nicht erforderlich bei den Frequenzen, für die keine Grenzwerte festgelegt sind.

Compatibilité électromagnétique (CEM) - Norme de famille de produits pour les machines-outils - Partie 1: Emission

Cette norme traite de l’émission électromagnétique (protection des services radioélectriques) des machines-outils, à l’exclusion des machines d'usinage par décharges électriques, conçues exclusivement pour des applications industrielles et analogues utilisant l’électricité, la tension assignée de la machine-outil ne dépassant pas 1 000 V en courant alternatif ou 1 500 V en courant continu entre phases. Les machines-outils qui incorporent des moteurs, des éléments chauffants ou des combinaisons de ceux-ci, peuvent contenir des circuits électriques ou électroniques et peuvent être alimentées par le réseau électrique ou par toute autre source d’énergie électrique. Cette norme ne couvre pas les installations fixes telles qu’elles sont définies dans le Guide d’application de la Directive 89/336/CEE, publié par la Commission Européenne. Les exigences d’émission couvrent la gamme de 9 kHz à 400 GHz sont couvertes. Aucune mesure ne doit être effectuée à des fréquences pour lesquelles aucune exigence n’est spécifiée.

Elektromagnetna združljivost (EMC) - Družina standardov za strojna orodja - 1. del: Oddajanje

General Information

• Status: Published
• Publication Date: 25-Apr-2005
• Withdrawal Date: 31-Jan-2008
• ICS: 25.080.01 - Machine tools in general
• ICS: 33.100.10 - Emission
• Technical Committee: CLC/TC 210 - Electromagnetic Compatibility (EMC)
• Drafting Committee: IEC/TC CISPR - IEC_TC_CISPR
• Parallel Committee: IEC/TC CISPR - IEC_TC_CISPR
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 25-Jun-2025
• Completion Date: 23-Sep-2025
• Directive: 2004/108/EC - Directive 2004/108/EC of the European Parliament and of the Council of 15 December 2004 on the approximation of the laws of the Member States relating to electromagnetic compatibility and repealing Directive 89/336/EEC
• Directive: 2004/108/EU - DIRECTIVE 2004/108/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 15 December 2004 on the approximation of the laws of the Member States relating to electromagnetic compatibility and repealing Directive 89/336/EEC
• Directive: 2014/30/EU - Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to electromagnetic compatibility (recast)
• Directive: 89/336/EEC - Electromagnetic compatibility (EMC)
• Mandate: M/404 - Standardisation Mandate to CEN, CENELEC and ETSI for harmonized standard according to the Electro Magnetic Compatibility (EMC) Directive 2004/108/EC
• Ref Project: SIST EN 50370-1:2007 - Electromagnetic compatibility (EMC) - Product family standard for machine tools -- Part 1: Emission

Overview

EN 50370-1:2005 - Electromagnetic compatibility (EMC) - Product family standard for machine tools - Part 1: Emission is a CENELEC product standard that defines uniform electromagnetic emission (radio‑frequency) requirements for industrial machine tools (excluding EDM). It applies to electrically powered machine tools with rated voltages up to 1 000 V AC or 1 500 V DC between lines and covers emissions in the frequency range 9 kHz to 400 GHz. The standard supports conformity assessment under EC Directive 89/336/EEC and specifies how to plan, perform and report emission measurements.

Key Topics and Requirements

• Scope and definitions: Clarifies what is a machine tool, module, port, power interface and entire electrical set for EMC testing.
• Emission measurement methods: Requires measurements in accordance with EN 55011 and CISPR 16 (modifications and application guidance are included in the product standard).
• Frequency coverage: Emission requirements from 9 kHz to 400 GHz; no measurements where no limits exist.
• Test approach: Distinguishes between machines that are type‑testable and those that are not; accommodates single‑piece production and modular designs.
• Testing procedures (Table 1):
  • Procedure A: Type test of the complete machine tool (full assembly, worst‑case configuration).
  • Procedure B: Type test of the entire electrical set (electrical components separated from mechanical structure) plus a visual inspection of the machine.
  • Procedure C: Module‑level testing - divide the machine into modules, classify modules as electromagnetically relevant, and test relevant modules (or accept a module’s declared compliance).
• Test configuration and conditions: Defines ports, auxiliary equipment, representative operating programs (typically ~50% reference settings), enclosure and cable arrangements (e.g., 1.5 m for unused signal ports).
• Documentation: Specifies test plan and test report formats; annexes include type test requirements (Annex A), entire electrical set (Annex B), modules (Annex C), a test plan template (Annex D) and an informative test flow chart (Annex E).
• Coverage of essential EC requirements: Annex ZZ maps the standard to Directive requirements.

Practical Applications / Who Uses It

• Machine tool manufacturers - design and verify emission performance of complete machines, electrical sets or modules.
• EMC engineers and test laboratories - develop test plans, run emissions testing per EN 55011/CISPR methods and report conformity.
• Integrators and system builders - apply module compliance data when assembling larger systems to reduce redundant testing.
• Compliance officers and procurement teams - validate vendor declarations and ensure machines meet EMC emission limits for industrial environments.

Related Standards

• EN 55011 (CISPR 11) - radio disturbance characteristics for ISM equipment
• EN 55022 (CISPR 22) - information technology equipment emissions
• EN 61800‑3 - EMC product standard for adjustable speed drive systems
• CISPR 16 series - measurement apparatus and methods

EN 50370-1:2005 is key for anyone ensuring that industrial machine tools meet harmonized emission requirements and for planning efficient, modular EMC conformity assessment strategies.

Standards Content (Sample)

SLOVENSKI SIST EN 50370-1:2007

STANDARD
januar 2007
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1. del: Oddajanje
(istoveten EN 50370-1:2005)
Electromagnetic compatibility (EMC) - Product family standard for machine tools -
Part 1: Emission
ICS 5HIHUHQþQDãWHYLOND
25.080.01; 33.100.20
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EUROPEAN STANDARD EN 50370-1
NORME EUROPÉENNE
EUROPÄISCHE NORM April 2005
ICS 25.080.01; 33.100.10
English version
Electromagnetic compatibility (EMC) –
Product family standard for machine tools
Part 1: Emission
Compatibilité électromagnétique (CEM) – Elektromagnetische Verträglichkeit (EMV) –
Norme de famille de produits pour les Produktfamiliennorm für
machines-outils Werkzeugmaschinen
Partie 1: Emission Teil 1: Störaussendung

This European Standard was approved by CENELEC on 2005-02-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 50370-1:2005 E
Foreword
This European Standard was prepared by the Technical Committee CENELEC TC 210, Electromagnetic
compatibility (EMC).
The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50370-1 on
2005-02-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2006-02-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2008-02-01
This European Standard has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association and covers essential requirements of
EC Directive 89/336/EEC. See Annex ZZ.
The purpose of this product family standard is
− to establish uniform requirements for the electromagnetic emission of the machine tools contained in
the scope,
− to fix test specifications of emission,
− to refer to Basic Standards for methods of testing,
− to standardise conditions during the tests and test report format for the assessment of conformity.
__________
– 3 – EN 50370-1:2005
Contents
1 Scope.4
2 Normative references.4
3 Definitions 4
4 System configuration.5
4.1 Test approach .6
5 Emission measurements.7
5.1 Classification and testing procedures .7
5.1.1 Machine tool containing no electromagnetically relevant components.7
5.1.2 Machine tool containing electromagnetically relevant components.7
5.2 Configuration of equipment under test.8
5.2.1 Configuration of equipment - Procedure A.9
5.2.2 Configuration of equipment - Procedure B.9
5.2.3 Configuration of equipment - Procedure C .9
5.3 Type test of machine tools with various configurations .9
5.4 Test plan and test report .10
5.4.1 Test plan.10
5.4.2 Test report .10
6 Product documentation.11
Annex A (normative) Type test requirements.12
Annex B (normative) Entire electrical set.13
Annex C (normative) Modules used for machine tools .14
Annex D (informative) Test plan .15
Annex E (informative) Testing procedure flow chart .16
Annex ZZ (informative) Coverage of Essential Requirements of EC Directives .17

1 Scope
This standard deals with the electromagnetic emission (radio frequency protection) of machine tools,
excluding electro discharge machines (EDM), designed exclusively for industrial and similar purposes that
use electricity, the rated voltage of the machine tool not exceeding 1 000 V AC or 1 500 V DC between
lines.
Machine tools may incorporate motors, heating elements or their combination, may contain electric or
electronic circuitry, and may be powered by the mains, or any other electrical power source.
This standard does not cover fixed installations as defined in the Guide to the Application of Directive
89/336/EEC, published by the European Commission.
Emission requirements in the frequency range 9 kHz to 400 GHz are covered. No measurements need to
be performed at frequencies where no requirements are specified.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications.
These normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of any of these publications
apply to this European Standard only when incorporated in it by amendment or revision. For undated
references the latest edition of the publication referred to applies (including amendments).
EN 55011 Industrial, scientific and medical (ISM) radio-frequency equipment –
Radio disturbance characteristics – Limits and methods of
measurement (CISPR 11, mod.)
EN 55022 Information technology equipment – Radio disturbance
characteristics – Limits and methods of measurement
(CISPR 22, mod.)
EN 61800-3  Adjustable speed electrical power drive systems — Part 3: EMC
product standard including specific test methods (IEC 61800-3)
CISPR 16-1 Specification for radio disturbance and immunity measuring
apparatus and methods — Part 1: Radio disturbance and immunity
measuring apparatus
3 Definitions
For the purposes of this document, the following terms and definitions apply.
3.1
machine tool (MT)
machine, not portable as a whole during its operation, driven by an external electrical energy source and
intended to work typically metal products in the solid state, with material removal (cutting processes as
turning, milling, grinding, drilling, machining.) or without material removal (forming processes as
bending, forging, etc.)
The machine tool is normally equipped with a power supply, an electrical and electronic assembly for
power and control and one or more power drive systems for the movement of mobile elements or parts

– 5 – EN 50370-1:2005
3.2
module
unit consisting of mechanical, pneumatic, hydraulic, electrical and/or electronic parts (examples: machine
bed, tool holder, sensor, spindle unit, cabinet including NC-controller and human-machine-interface,
programmable logic controller - PLC, power drive.), intended exclusively for an industrial assembly
operation for incorporation in an apparatus or system. A component can be considered as a module
3.3
electromagnetically relevant component/module
An electromagnetically relevant component or module for emission aspects is defined as one that, due to
its electromagnetic characteristics, is liable to cause electromagnetic disturbances such that it will
influence the emission characteristics of typical assemblies into which it may be incorporated
3.4
port
particular boundary of the specified machine tool or module with the electromagnetic environment of the
process
(IEV 131-02-21 modified)
NOTE By boundary is meant the physical limits of the complete machine tool or module.
3.5
power interface
connections needed for the distribution of electrical power within the machine tool
3.6
entire electrical set
assembly of all electro-magnetic relevant modules separated from the mechanical structure of the
machine tool allowing the assembly to be tested in a reference test site
3.7
type test
test of one or more devices made to a certain design to show that the design meets certain specifications
(IEV 151-04-15)
3.8
equipment
generic term, referring to the entire machine tool, the entire electrical set or an electrical/
electromechanical module
4 System configuration
A basic configuration may consist of (see Figure 1)
− an electrical feeding section,
− control and protection circuits and equipment,
− one or more basic power conditioning units (example: drive modules) performing control and/or
conversion of electrical energy,
− one or more actuators and their associated transducers,
− control and sequencing systems such as NC-controllers, programmable controllers and their
associated peripherals, programming and debugging tools, test equipment and human-machine
interfaces,
− peripherals (transducer(s), operator station, emergency stop devices, etc.),
− the structure and the moving parts driven by the actuator(s).

CCaabbiinneett EEnncclloossuurere P Poortrt
PoPowweerr
MechMechananicicss
InIntteerrffaaccee
AxAxiiss 1 1 M 1M 1
InIntteerrnnaall P Poorr tt
AxAxiiss X X M XM X
CoConnttrrooll
InIntteerr ffacacee
PoPowweer Por Portrt
SSee nsnsororss
CoConnttrrooll
(E(Exxtteerr nnaall P Poorrtt))
AcActtuuaattoorrss
SSiiggnnaall C Contontrr ooll
InIntteerr ffaaccee
EaEarrtthh P Poorrtt SSiiggnnaall / /CCononttrrolol PPoorrtt SiSiggnnaall / /CCoonnttrrooll PoPortrt
((EExtxterer nnaal Pl Poorrtt))
((EExtxt erernn aall P Poo rrtt))

Figure 1 – System configuration and example of ports
4.1 Test approach
Type testing of a finished product is the normal method for conformity assessment against the
requirements of a standard, but complete testing of an entire machine tool at a conventional EMC test site
is only technically possible and economically feasible for a limited number of machines. A distinction shall
be drawn between type-testable machines and machines which, because of the weight, dimensions,
operation or unreasonable testing costs and testing delay, cannot be type-tested as a whole at a
conventional EMC test site.
Furthermore, it is necessary to take into account single-piece production and the multitude of types as
well as expansions and modifications.
Distinctions shall be drawn between the following cases and shall be taken into account:
− type-testable machines;
− machines which are not type-testable;
− multitude of types;
− modifications, additions and expansions.
Each testing procedure for conformity assessment is based on one or a combination of various tests:
− type test at the EMC test site;
− visual inspection of entire machine tool;
1)
− additional tests on entire machine tool .
———————
1)
Such tests are usually performed in the manufacturers premises.

– 7 – EN 50370-1:2005
5 Emission measurements
Emission measurements shall be performed in accordance with EN 55011 and CISPR 16.
The content of these standards are not repeated here however modifications or additional information
needed for the practical application of the testing procedures are given in the present product standard.
(These conditions may include in situ measurements as long as they are in accordance with the test
methods specified in EN 55011 and CISPR 16).
5.1 Classification and testing procedures
The emission testing procedures are described in the following paragraphs. A flow chart providing an
overview of the test procedures is included in the informative Annex E.
5.1.1 Machine tool containing no electromagnetically relevant components
If the machine tool contains no electromagnetically relevant components, no tests have to be carried out.
EXAMPLES Machine tools containing only components such as squirrel cage motors and
electromechanical switches.
5.1.2 Machine tool containing electromagnetically relevant components
If the machine tool contains electromagnetically relevant components such as electronic control and
power parts (sub-assemblies, sub-systems, etc.), one of the procedures laid down in Table 1 shall be
carried out. The test procedure is chosen by the manufacturer based on the characteristics of the
machine tool.
Table 1 – Testing procedures
Test procedure Procedure A Procedure B Procedure C
(Applicable for the entire MT) (Applicable for the entire (Applicable for electrical or
electrical set) electromechanical modules)
Type test Required Required Required
Visual inspection of entire MT Not required Required Required
a
Additional tests on entire MT Not required Not required Required
a
Such tests are usually performed in the manufacturers premises.

5.1.2.1 Test procedure A
The
...