SIST EN 15571:2021
(Main)Machines and plants for mining and tooling of natural stone - Safety - Requirements for surface-finishing machines
Machines and plants for mining and tooling of natural stone - Safety - Requirements for surface-finishing machines
This document applies to stationary surface-finishing machines with stationary work piece (see 3.1) or with moving work piece (see 3.2) which are used to grind or polish horizontal surfaces of slabs, strips or tiles of natural stone and engineered stone (e.g. agglomerated stone) as defined by EN 14618:2009.
This document deals with all significant hazards, hazardous situations and events relevant to surface-finishing machines, when they are used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer (see Clause 4).
This document specifies the appropriate technical measures to eliminate or reduce risks arising from the significant hazards.
This document deals with the foreseeable lifetime of the machinery including the phases of transport, assembly, dismantling, disabling and scrapping.
This document does not deal with:
- hand-held grinding machines;
- machines intended for operation in a potentially explosive atmosphere;
- operation in severe environmental conditions (e.g. extreme temperatures, corrosive environment);
- machines intended for outdoor operation.
This document is not applicable to machinery which is manufactured before the date of publication of this document by CEN.
Maschinen und Anlagen zur Gewinnung und Bearbeitung von Naturstein - Sicherheit - Anforderungen an Flächenschleifmaschinen
Dieses Dokument gilt für stationäre Flächenschleifmaschinen mit stationärem Werkstück (siehe 3.1) oder beweglichem Werkstück (siehe 3.2), die zum Schleifen oder Polieren von horizontalen Flächen von Platten, Leisten oder Fliesen aus Naturstein und ähnlichen natürlichen oder künstlichen Werkstoffen (wie z. B. künstlich hergestelltem Stein) verwendet werden, wie in EN 14618:2009 festgelegt.
Dieses Dokument behandelt alle wesentlichen Gefährdungen, Gefährdungssituationen und Gefährdungs-ereignisse mit Bezug zu Flächenschleifmaschinen, wenn sie bestimmungsgemäß und unter Bedingungen von durch den Hersteller vernünftigerweise vorhersehbaren Fehlanwendungen verwendet werden (siehe Abschnitt 4).
Dieses Dokument legt die entsprechenden technischen Maßnahmen fest, um die aus den signifikanten Gefährdungen resultierenden Risiken zu beseitigen oder zu verringern.
Dieses Dokument behandelt die vorhersehbare Lebenszeit der Maschine einschließlich der Phasen des Transports, des Zusammenbaus, der Zerlegung, Stilllegung und Verschrottung.
Dieses Dokument gilt nicht für:
- handgehaltene Schleifmaschinen;
- Maschinen, die für den Betrieb in explosionsgefährdeten Bereichen vorgesehen sind;
- Betrieb unter schwierigen Umgebungsbedingungen (z. B. extreme Temperaturen, korrosive Umgebung);
- Maschinen zum Betrieb im Freien.
Dieses Dokument gilt nicht für Maschinen, die hergestellt wurden, bevor dieses Dokument von CEN veröffentlicht wurde.
Machines et installations d'extraction et d'usinage des pierres naturelles - Sécurité - Prescriptions relatives aux machines de finition de surface
Le présent document s’applique aux machines fixes de finition de surface avec pièce à usiner fixe (voir 3.1) ou mobile (voir 3.2), utilisées pour meuler ou polir les surfaces horizontales de dalles, bandes ou pavés en pierre naturelle et pierre composite (par exemple, pierre agglomérée) tel que défini dans l’EN 14618:2009.
Le présent document traite de tous les phénomènes, situations et événements dangereux significatifs applicables aux machines de finition de surface lorsqu’elles sont utilisées normalement et lorsqu’elles sont utilisées dans des conditions de mauvaise utilisation raisonnablement prévisibles par le fabricant (voir Article 4).
Le présent document spécifie les mesures techniques appropriées pour éliminer ou réduire les risques dus aux phénomènes dangereux significatifs.
Le présent document traite de la vie prévue de la machine y compris les phases de transport, de mise en service, de démontage, de mise au rebut et de destruction.
Le présent document ne s’applique pas aux :
- meuleuses portatives ;
- machines destinées à fonctionner en atmosphère explosible ;
- fonctionnements en conditions environnementales sévères (par exemple températures extrêmes, environnement corrosif) ;
- machines destinées à fonctionner en extérieur.
Le présent document ne s’applique pas aux machines fabriquées avant la date de publication du présent document par le CEN.
Stroji in obrati za pridobivanje in obdelavo naravnega kamna - Varnost - Zahteve za stroje za dodelavo površine
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2021
Nadomešča:
SIST EN 15571:2015
Stroji in obrati za pridobivanje in obdelavo naravnega kamna - Varnost - Zahteve
za stroje za dodelavo površine
Machines and plants for mining and tooling of natural stone - Safety - Requirements for
surface-finishing machines
Maschinen und Anlagen zur Gewinnung und Bearbeitung von Naturstein - Sicherheit -
Anforderungen an Flächenschleifmaschinen
Machines et installations d'extraction et d'usinage des pierres naturelles - Sécurité -
Prescriptions relatives aux machines de finition de surface
Ta slovenski standard je istoveten z: EN 15571:2020
ICS:
25.080.50 Brusilni in polirni stroji Grinding and polishing
machines
73.120 Oprema za predelavo rudnin Equipment for processing of
minerals
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 15571
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2020
EUROPÄISCHE NORM
ICS 25.080.50; 73.120 Supersedes EN 15571:2014
English Version
Machines and plants for mining and tooling of natural
stone - Safety - Requirements for surface-finishing
machines
Machines et installations d'extraction et d'usinage des Maschinen und Anlagen zur Gewinnung und
pierres naturelles - Sécurité - Prescriptions relatives Bearbeitung von Naturstein - Sicherheit -
aux machines de finition de surface Anforderungen an Flächenschleifmaschinen
This European Standard was approved by CEN on 28 September 2020.
CEN 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 CEN-CENELEC Management Centre or to any CEN
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 CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 15571:2020 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 9
4 Safety requirements and/or protective measures . 15
4.1 General . 15
4.2 Controls . 15
4.2.1 Safety and reliability of the control system . 15
4.2.2 Position of controls . 16
4.2.3 Starting . 16
4.2.4 Normal stop . 17
4.2.5 Emergency stop . 17
4.2.6 Operational stop . 18
4.2.7 Mode-selection . 18
4.2.8 Failure of electrical power supply . 19
4.2.9 Failure of the control circuits . 19
4.2.10 Teleservice . 20
4.3 Protection against mechanical hazards . 20
4.3.1 Transport and installation of machine . 20
4.3.2 Stability . 20
4.3.3 Risk of break-up during the working process . 21
4.3.4 Prevention of access to moving parts and safeguards to minimize the effect of
ejection. 21
4.3.5 Specific requirements for surface-finishing machines with fixed table and mobile
transversal bridge (track machines) - Bridge infeed . 23
4.3.6 Tool changing . 23
4.4 Protections against no mechanical hazards . 24
4.4.1 Fire. 24
4.4.2 Noise . 24
4.4.3 Electrical hazards . 25
4.4.4 Ergonomics and handling . 25
4.4.5 Hydraulic and pneumatic components . 26
4.4.6 Electromagnetic compatibility . 26
4.4.7 Unintended movements. 26
4.4.8 Isolation . 26
4.4.9 Maintenance . 27
5 Information for use . 27
5.1 General . 27
5.2 Signals and warning devices . 27
5.3 Marking, signs and written warnings . 27
5.4 Instruction handbook . 28
5.4.1 General . 28
5.4.2 Operator's manual . 28
5.4.3 Maintenance manual . 31
Annex A (informative) List of significant hazards . 33
Annex B (normative) Rigid guards on machines - Impact test method . 36
B.1 General . 36
B.2 Test method . 36
B.2.1 Preliminary remarks . 36
B.2.2 Testing equipment . 36
B.2.2.1 General . 36
B.2.2.2 Projectiles . 36
B.2.2.3 Sampling and supporting the guard under test . 37
B.2.3 Test procedure . 37
B.3 Results . 37
B.4 Assessment. 38
B.5 Test report . 38
B.6 Example of propulsion device for impact test . 38
Annex C (normative) Noise test code . 39
C.1 Introduction. 39
C.2 Measurement of the A-weighted emission sound pressure level at the operator's
positions or other specified positions . 39
C.2.1 Basic standards . 39
C.2.2 Measurement procedure and positions . 39
C.2.3 Measurement uncertainty . 40
C.3 Determination of sound power level . 40
C.3.1 Measurement procedure and positions . 40
C.3.2 Measurement uncertainty . 40
C.4 Installation, mounting and operating conditions for noise emission measurement . 41
C.5 Information to be recorded and reported . 41
C.6 Declaration and verification of noise emission values . 46
C.6.1 General . 46
C.6.2 Example of a declaration of noise emission values in the instruction handbook for a
machine where the largest dimension does not exceed 6 m . 48
C.6.3 Example of a declaration of noise emission values in the instruction handbook for a
machine where at least one dimension exceeds 6 m . 49
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2006/42/EC aimed to be covered . 53
Bibliography . 57
European foreword
This document (EN 15571:2020) has been prepared by Technical Committee CEN/TC 151 “Construction
equipment and building material machines - Safety”, the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by May 2021, and conflicting national standards shall be
withdrawn at the latest by month year of May 2021.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 15571:2014.
The following major changes were introduced:
— list of the significant hazards has been moved from Clause 4 to Annex A, according to 6.10.3.1 of CEN
Guide 414;
— normative references have been modified and updated to Clause 2;
— terms and definitions have been introduced to Clause 3 (e.g. control power on, telecontrol,
teleservice);
— requirements related to position of controls have been added or modified to 4.2.2.1;
— requirements related to hand-held control sets have been added to 4.2.2.2;
— requirements related to starting have been added or modified to 4.2.3;
— requirements related to normal stop have been added or modified to 4.2.4;
— requirements related to emergency stop have been added or modified to 4.2.5;
— requirements related to operational stop have been added or modified to 4.2.6;
— requirements related to teleservice have been added to 4.2.10;
— requirements related to transport and installation of machine have been added to 4.3.1;
— requirements related to stability have been added to 4.3.2;
— requirements related to prevention of access to moving parts and safeguards to minimize the effect
of ejection have been added or modified to 4.3.4;
— specific requirements related to surface-finishing machines with fixed table and mobile transversal
bridge (track machines) have been modified to 4.3.5;
— requirements related to tool changing have been added or modified to 4.3.6;
— requirements related to noise have been added or modified to 4.4.2 and Annex C;
— requirements related to electrical hazards have been added or modified to 4.4.3;
— requirements related to unintended movements have been added to 4.4.7;
— requirements related to information for use have been added or modified to Clause 5;
— requirements related to rigid guards on machines and impact test method have been added to Annex
B;
— Annex ZA has been modified according to the last edition of CEN Guide 414.
This document has been prepared under a standardization request given to CEN by the European
Commission and the European Free Trade Association, and supports essential requirements of
EU Directive(s).
For relationship with EU Directive, see informative Annex ZA, which is an integral part of this document.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
Kingdom.
Introduction
This document has been prepared to be a harmonized standard to provide one means of conforming to
the essential health and safety requirements of the Machinery Directive and associated EFTA Regulations.
This document is a type-C standard as stated in EN ISO 12100.
This document is of relevance, in particular, for the following stakeholder groups representing the market
players with regard to machinery safety:
— machine manufacturers (small, medium and large enterprises);
— health and safety bodies (regulators, accident prevention organizations, market surveillance, etc.).
Others can be affected by the level of machinery safety achieved with the means of the document by the
above-mentioned stakeholder groups:
— machine users/employers (small, medium and large enterprises);
— machine users/employees (e.g. trade unions, organizations for people with special needs);
— service providers, e.g. for maintenance (small, medium and large enterprises);
— consumers (in case of machinery intended for use by consumers).
The above-mentioned stakeholder groups have been given the possibility to participate at the drafting
process of this document.
The machinery concerned and the extent to which hazards, hazardous situations and hazardous events
are covered are indicated in the scope of this document.
When requirements of this type-C standard are different from those which are stated in type-A or type-B
standards, the requirements of this type-C standard take precedence over the requirements of the other
standards for machines that have been designed and built according to the requirements of this type-C
standard.
1 Scope
This document applies to stationary surface-finishing machines with stationary work piece (see 3.1) or
with moving work piece (see 3.2) which are used to grind or polish horizontal surfaces of slabs, strips or
tiles of natural stone and engineered stone (e.g. agglomerated stone) as defined by EN 14618:2009.
This document deals with all significant hazards, hazardous situations and events relevant to surface-
finishing machines, when they are used as intended and under conditions of misuse which are reasonably
foreseeable by the manufacturer (see Clause 4).
This document specifies the appropriate technical measures to eliminate or reduce risks arising from the
significant hazards.
This document deals with the foreseeable lifetime of the machinery including the phases of transport,
assembly, dismantling, disabling and scrapping.
This document does not deal with:
— hand-held grinding machines;
— machines intended for operation in a potentially explosive atmosphere;
— operation in severe environmental conditions (e.g. extreme temperatures, corrosive environment);
— machines intended for outdoor operation.
This document is not applicable to machinery which is manufactured before the date of publication of
this document by CEN.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 166:2001, Personal eye-protection — Specifications
EN 1005-2:2003+A1:2008, Safety of machinery — Human physical performance — Part 2: Manual
handling of machinery and component parts of machinery
EN 1005-4:2005+A1:2008, Safety of machinery — Human physical performance — Part 4: Evaluation of
working postures and movements in relation to machinery
EN 14618:2009, Agglomerated stone — Terminology and classification
EN 50370-1:2005, Electromagnetic compatibility (EMC) — Product family standard for machine tools —
Part 1: Emission
EN 50370-2:2003, Electromagnetic compatibility (EMC) — Product family standard for machine tools —
Part 2: Immunity
EN 60204-1:2018, Safety of machinery — Electrical equipment of machines — Part 1: General requirements
(IEC 60204 1:2016, mod.)
EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989)
EN 60529:1991/A1:2000, Degrees of protection provided by enclosures (IP Code)
(IEC 60529:1989/A1:1999)
EN 60529:1991/A2:2013, Degrees of protection provided by enclosures (IP Code)
(IEC 60529:1989/A2:2013)
EN 61439-1:2011, Low-voltage switchgear and controlgear assemblies — Part 1: General rules (IEC 61439-
1:2011)
EN 61800-5-2:2017, Adjustable speed electrical power drive systems — Part 5-2: Safety requirements —
Functional (IEC 61800-5-2:2016)
EN 82079-1:2012, Preparation of instructions for use — Structuring, content and presentation — Part 1:
General principles and detailed requirements (IEC 82079-1:2012)
EN ISO 3744:2010, Acoustics — Determination of sound power levels and sound energy levels of noise
sources using sound pressure — Engineering methods for an essentially free field over a reflecting plane
(ISO 3744:2010)
EN ISO 3746:2010, Acoustics — Determination of sound power levels and sound energy levels of noise
sources using sound pressure — Survey method using an enveloping measurement surface over a reflecting
plane (ISO 3746:2010)
EN ISO 3747:2010, Acoustics — Determination of sound power levels and sound energy levels of noise
sources using sound pressure — Engineering/survey methods for use in situ in a reverberant environment
(ISO 3747:2010)
EN ISO 4413:2010, Hydraulic fluid power — General rules and safety requirements for systems and their
components (ISO 4413:2010)
EN ISO 4414:2010, Pneumatic fluid power — General rules and safety requirements for systems and their
components (ISO 4414:2010)
EN ISO 4871:2009, Acoustics — Declaration and verification of noise emission values of machinery and
equipment (ISO 4871:1996)
EN ISO 11201:2010, Acoustics — Noise emitted by machinery and equipment — Determination of emission
sound pressure levels at a work station and at other specified positions in an essentially free field over a
reflecting plane with negligible environmental corrections (ISO 11201:2010)
EN ISO 11202:2010, Acoustics — Noise emitted by machinery and equipment — Determination of emission
sound pressure levels at a work station and at other specified positions applying approximate environmental
corrections (ISO 11202:2010)
EN ISO 11204:2010, Acoustics — Noise emitted by machinery and equipment — Determination of emission
sound pressure levels at a work station and at other specified positions applying accurate environmental
corrections (ISO 11204:2010)
EN ISO 11688-1:2009, Acoustics — Recommended practice for the design of low-noise machinery and
equipment — Part 1: Planning (ISO/TR 11688-1:1995)
EN ISO 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk
reduction (ISO 12100:2010)
EN ISO 13849-1:2015, Safety of machinery — Safety-related parts of control systems — Part 1: General
principles for design (ISO 13849-1:2015)
EN ISO 13850:2015, Safety of machinery — Emergency stop function — Principles for design
(ISO 13850:2015)
EN ISO 13855:2010, Safety of machinery — Positioning of safeguards with respect to the approach speeds
of parts of the human body (ISO 13855:2010)
EN ISO 13857:2019, Safety of machinery — Safety distances to prevent hazard zones being reached by
upper and lower limbs (ISO 13857:2019)
EN ISO 14118:2018, Safety of machinery — Prevention of unexpected start-up (ISO 14118:2017)
EN ISO 14119:2013, Safety of machinery — Interlocking devices associated with guards — Principles for
design and selection (ISO 14119:2013)
EN ISO 14120:2015, Safety of machinery — Guards — General requirements for the design and
construction of fixed and movable guards (ISO 14120:2015)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 12100:2010 and the
following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at http://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
3.1
surface-finishing machine with fixed table and mobile transversal bridge (track machines)
integrated fed machine, with stationary work piece table and a movable bridge, designed for grinding or
polishing horizontal surfaces of stone slabs (see Figure 1 and Figure 2) by the use of grinding or polishing
head water cooled during the working process having at least two squared axes which the working head
moves over
Note 1 to entry: This machine can be equipped with the following facilities:
a) automatic grinding or polishing head-change system with tool magazine;
b) grinding or polishing head-change system with bayonet locking;
c) accessory units for calibrating;
d) accessory units for polishing.
Safeguarding devices are not illustrated
Key
1 spindle 5 material support plan
2 tool 6 track
3 bridge 7 control panel
4 workpiece 8 electric panel
Figure 1 — Example of a surface-finishing machine with fixed table and mobile transversal
bridge “PORTAL”
Safeguarding devices are not illustrated
Key
1 spindle 5 material support plan
2 tool 6 track
3 bridge 7 control panel
4 workpiece 8 electric panel
Figure 2 — Example of a surface-finishing machine with fixed table and mobile transversal
bridge “SEMI-PORTAL”
3.2
surface-finishing machine with belt conveyor and fixed or mobile spindles-holding beam
integrated fed machine, with continuous operating belt and a spindles-holding beam, designed for
grinding or polishing horizontal surfaces of stone slabs (see Figure 3) by the use of grinding or polishing
head water cooled during the working process having at least two squared axes which the working head
moves over
Note 1 to entry: This machine can be equipped with the following facilities:
a) grinding or polishing head-change system with bayonet locking;
b) accessory units for calibrating;
c) accessory units for polishing.
Safeguarding devices are not illustrated
Key
1 spindle 5 workpiece 9 unloading roller track
2 grinding or polishing head 6 control panel 10 front cover (sliding door)
3 spindles-holding beam 7 electric board 11 work bench
4 belt conveyor 8 loading roller track
Figure 3 — Example of a surface finishing machine with belt conveyor and fixed or mobile
spindles-holding beam
3.3
grinding or polishing segment
part of tool that allows to remove the material from the workpiece, getting smoothed and polished surface
(see Figure 4)
Note 1 to entry: During the process, it undergoes wear.
Key
1 grinding or polishing segment 2 saddle with dovetail
Figure 4 — Example of a grinding or polishing tool
3.4
grinding or polishing head
part of the machine, held up by the bridge or spindles-holding beam that generates different moving of
tools (see Figures 5 to 7)
Note 1 to entry: These heads can be designed for different additional movements between grinding or polishing
segment and workpiece (swing, planetary, …).
Key
1 toothed wheel 4 grinding or polishing segment holder
2 grinding or polishing head carrier 5 grinding or polishing segment
3 housing of grinding or polishing head
Figure 5 — Example of a swing grinding or polishing head
Key
1 toothed wheel 4 flange bearing
2 grinding or polishing head carrier 5 grinding or polishing tool
3 housing of grinding or polishing head 6 grinding or polishing segment
Figure 6 — Example of a planetary grinding or polishing head
Key
1 toothed wheel 4 grinding or polishing tool
2 grinding or polishing disk carrier 5 grinding or polishing segment
3 grinding or polishing disk flange
Figure 7 — Example of a disk grinding or polishing head
3.5
spindle
special shaft powered by a motor which holds the grinding or polishing head in rotation
3.6
spindles-holding beam
beam that supports all the spindles and allows the alternative movement of translation
3.7
work bench
bench on which the conveyor belt drives the workpiece (slabs or strips)
3.8
machine actuator
power mechanism used to affect motion of the machine
3.9
machining mode of operation
automatic, programmed, sequential mode of operation of the machine with the facility for manual or
automatic loading/unloading of the workpiece
3.10
machine setting mode of operation
setting, programming, fault finding, programme verification, testing mode of operation of the machine
3.11
monitoring
safety function which ensures that a safety measure is initiated if the ability of a component or an element
to perform its function is diminished, or if the process conditions are changed in such a way that hazards
are generated
3.12
safety function
function of the machine whose failure can result in an immediate increase of the risk(s)
[SOURCE: EN ISO 12100:2010, 3.30]
3.13
safety-related part of a control system
SRP/CS
part of a control system that responds to safety-related input signals and generates safety-related output
signals
[SOURCE: EN ISO 13849-1:2015, 3.1.1]
Note 1 to entry: The combined safety-related parts of a control system start at the point where the safety-related
input signals are initiated (including for example the actuating cam and the roller of the position switch) and end at
the output of the power control elements (including for example the main contacts of the contactor).
Note 2 to entry: If monitoring systems are used for diagnostics, they are also considered as SRP/CS.
3.14
performance level
PL
discrete level used to specify the ability of safety-related parts of control systems to perform a safety
function under foreseeable conditions
[SOURCE: EN ISO 13849-1:2015, 3.1.23, 4.5.1]
3.15
control power-on
control that after activation enables providing power to machines actuators, also on a lower control level,
e.g. by the PLC (Programmed Logic Control)
3.16
telecontrol
control of the machine movements from a remote service site
3.17
teleservice
machine diagnosis (including trouble-shooting), software update and telecontrol from a remote service
site
3.18
non-positive clamping
fixing without any element passing through the guard
4 Safety requirements and/or protective measures
4.1 General
Machinery shall comply with the safety requirements and/or protective measures of this clause. In
addition, the machine shall be designed according to the principles of EN ISO 12100:2010 for relevant,
but not significant hazards which are not dealt with by this document.
4.2 Controls
4.2.1 Safety and reliability of the control system
For the purpose of this document, safety-related part of a control system means the system which
implements safety functions from the initial device, e.g. actuator, position detector or sensor up to and
including the power-control element of the final machine actuator, e.g. motor or brake. Safety-related
parts of the control system of this machine comprise parts concerning the following functions and they
shall fulfil the requirements of the PL given below in accordance with the requirements of
EN ISO 13849-1:2015:
a) for control power on: PL = c (see 4.2.3);
b) for normal stop: PL = b (see 4.2.4);
c) for emergency stop: PL = c (see 4.2.5);
d) for standstill monitoring: PL = c (see 4.2.6);
e) for prevention of automatic restart: PL = c (see 4.2.8);
f) for tool release: PL = c or two independent systems PL = b (see 4.3.6.3);
g) for interlocking: PL = c (see 4.2.6, 4.2.7, 4.3.4.1, 4.3.4.2 and 4.3.4.3);
h) for hold-to-run control or limited speed/increment monitoring: PL = c or in conjunction with an
enabling device in accordance with EN 60204-1:2018, 9.2.3.2, conforming to PL = c (see 4.2.7.3);
i) for mode selection: PL = c (see 4.2.7);
j) for head suspension function monitoring PL = c (see 4.3.6.1).
Verification: By checking the relevant drawings and/or circuit diagrams, calculation and inspection of the
machine.
4.2.2 Position of controls
4.2.2.1 General
The main electrical control devices that are, enabling controls, reset control, control power on,
operational/normal stop, emergency stop, mode selection shall be located at the operator's position
adjacent to the control display (at the main control panel) at a distance of at least 600 mm and not
exceeding 1 800 mm from the floor level.
Any safeguarding equipment reset control device shall be located outside the protected zone and shall
not be reachable from inside the protected zone. The operator shall have a good view on the protected
zone from the reset position.
The emergency stop device shall be provided at each working station and in particular:
a) at the main control panel;
b) at the mobile control panel, connected by cable or wireless system;
c) adjacent to all hold-to-run control;
d) adjacent to all limited movement control;
e) at each workpiece loading and unloading area;
f) inside any enclosure fitted with access door if the operator does not have a clear view of the complete
machining area from the control position;
g) adjacent to all cycle start control devices.
If, in compliance with the above requirements, the distance between two emergency stop devices results
less than 1 m, one of the two devices can be removed. This technical solution can be applied only if the
two emergency devices are fixed on board of machine and are not separated by any obstacle.
Verification: By checking the relevant drawings and/or circuit diagrams, inspection of the machine and
functional testing of the machine.
4.2.2.2 Hand-held control sets
Additional control devices for cycle setting (see 4.2.7.3 c)), starting, operational/normal stopping may be
duplicated/provided on hand-held control sets.
For wireless hand-held control sets, EN 60204-1:2018, 9.2.4, applies.
No reset function control device, no control power on device, no mode-selection switch shall be permitted
on wireless control sets or control sets with cable connection.
Verification: By checking the relevant drawings and/or circuit diagrams, inspection of the machine and
functional testing of the machine.
4.2.3 Starting
Control power on activation shall only be possible when all safeguards described in 4.2.7 and 4.3.4 are in
place and functional.
This is achieved by the interlocking arrangement, including PL required, described in 4.2.7 and 4.3.4.
Cycle start or restart shall only be possible after actuation of a control power on device provided for that
purpose and protected against unintended actuation e.g. by shrouded control device.
The safety-related part of the control system for the control power on shall achieve at least PL = c and the
requirements of EN 60204-1:2018, 9.2.3.2, apply.
NOTE 1 No minimum PL is required for cycle-starting and restarting functions.
Manual reset may be achieved by control power-on circuit, where control-power on device fulfils position
requirements stated in 5.2 for manual reset devices.
If only one safeguard is triggered, safeguard local reset and process start may occur at the same time.
Verification: By checking the relevant drawings and/or circuit diagrams, inspection of the machine and
functional testing of the machine.
4.2.4 Normal stop
A normal stop control system shall be provided which, when actuated, shall fulfil the stopping sequences
and shall disconnect power from all machine actuators.
The stop function shall be of a category 1 in accordance with the requirements of EN 60204-1:2018, 9.2.2,
to allow the actuation of the electrical brake (if fitted). If an electrical brake is not fitted, the stop function
may be 0.
The stopping sequence for normal stop shall be:
a) stop axes movements;
b) stop spindles rotation;
c) cut power to the machine actuators.
The normal stop function shall be at least PL = b in accordance with the requirements of
EN ISO 13849-1:2015.
For normal stop of PDS(SR) (power drive system, safety-related), EN 61800-5-2:2017, 4.2.3.2 (safe
torque off (STO)), and EN 61800-5-2:2017, 4.2.3.3 (safe stop 1 (SS1)), apply.
Verification: By checking the relevant drawings and/or circuit diagrams, inspection of the machine and
functional testing of the machine.
4.2.5 Emergency stop
The machine shall be fitted with an emergency stop control device which complies with the requirements
of EN ISO 13850:2015 and additionally with the requirements of EN 60204-1:2018, 10.7. The emergency-
stop control device shall be at any time of self-latching type.
The emergency-stop function shall comply with the requirements of EN 60204-1:2018, 9.2.3.4.2, and the
emergency-stop function shall be of a category 0 or 1 in accordance with the requirements of
EN 60204-1:2018, 9.2.2, to allow the actuation of the brake until the braking sequence is complete.
When initiated, the emergency stop sequence shall:
a) stop axes movements;
b) stop spindle rotation;
c) cut power to the machine actuators.
The control circuit for emergency stop shall be at least PL = c in accordance with the requirements of
EN ISO 13849-1:2015.
For emergency stop of PDS(SR) (power drive system, safety-related), EN 61800-5-2:2017, 4.2.3.2 (safe
torque off (STO)), and EN 61800-5-2:2017, 4.2.3.3 (safe stop 1 (SS1)), apply.
Verification: By checking the relevant drawings and/or circuit diagrams, inspection and relevant
functional testing of the machine.
4.2.6 Operational stop
If an operational stop function is needed for intervention in the machine while drive systems remain
under control, the stop function provided (e.g. cycle stop) shall be of category 2 in accordance with the
requirements of EN 60204-1:2018, 9.2.2, actuated in conjunction with standstill monitoring, and the
control system for standstill monitoring shall be at least PL = c in accordance with the requirements of
EN ISO 13849-1:2015.
For operational stop of PDS(SR) (power drive system, safety-related), EN 61800-5-2:2017, 4.2.4.2 (safe
operating stop” (SOS)), and EN 61800-5-2:2017, 4.2.3.4 (safe stop 2 (SS2)), apply
Any activation/triggering of a protective device located in a zone where machining is under progress (see
4.3.4.1, 4.3.4.2, 4.3.4.3) shall initiate the stopping sequence in accordance with 4.2.4 or 4.2.5. The relevant
PL stated in 4.2.4 or 4.2.5 shall be fulfilled.
When the operational stop sequence is initiated, it shall:
a) stop axes movements;
b) stop spindle rotation.
If the intervention in the machine is allowed only with a change of mode of operation, the features of the
control circuit shall be as described in 4.2.7.
Verification: By checking the relevant drawings and/or circuit diagrams, inspection of the machine and
functional testing of the machine.
4.2.7 Mode-selection
4.2.7.1 General
If the machine is designed to be operated during setting with the interlocking guards open, a mode-
selection switch shall be provided to select between the machining and setting modes of operation and
the following conditions shall be met:
a) the mode-selection switch shall be lockable in each position (e.g. by key or password) and shall be
located outside the hazards zone, e.g. on the main control panel (see 4.2.2 for location of control
devices);
b) the control system for mode selection shall be at least PL = c in accordance with the requirements of
EN ISO 13849-1:2015;
c) the mode-selection switch shall not allow more than one mode to be active at any one time;
d) the safeguarding requirements given in 4.2.7.2 and 4.2.7.3 shall be effective in their respective mode
of operation;
e) selecting any of the modes shall not initiate any movement of the machine;
f) when changing from machining mode of operation (see 4.2.7.2) to setting mode of operation (see
4.2.7.3), the machine shall be brought to a complete stop in accordance with 4.2.4 or 4.2.5 or 4.2.6.
Verification: By checking the relevant drawings and/or circuit diagrams, inspection and functional testing
of the machine.
4.2.7.2 Machining mode of operation
In the machining mode, movement shall only be possible when the interlocking guards (for definition see
EN ISO 14119:2013, 3.2 and 3.5) are in place and functional.
Verification: By checking the relevant drawings and/or circuit diagrams and inspection and functional
testing of the machine.
4.2.7.3 Machine-setting mode of operation
In the machine-setting mode of operation when the movable guards are
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