EN 12750:2001
(Main)Safety of woodworking machines - Four-sided moulding machines
Safety of woodworking machines - Four-sided moulding machines
This European Standard specifies the requirements and/or measures to remove the hazards and limit the risks on four-sided moulding machines with a maximum working width of 350 mm hereafter referred to as "machines" designed to cut solid wood, chipboard, fibreboard, plywood and also these materials where these are covered with plastic laminate or edgings.
This European Standard covers the hazards relevant to this machine as listed in clause 4.
For Computer Numerically Controlled machines (CNC) this European Standard does not cover hazards related to Electro-Magnetic Compatibility (EMC).
This European Standard does not apply to :
a) hazards relating to infeed devices (magazines, hoppers, etc.);
b) machines designed for machining logs which have not previously been machined.
This European Standard is primarily applicable to machines which are manufactured after the date of issue of this European Standard.
Sicherheit von Holzbearbeitungsmaschinen - Fräsmaschinen für vierseitige Bearbeitung
Diese Europäische Norm legt die Anforderungen und/oder Maßnahmen fest für die Beseitigung von Gefähr-dungen und zur Begrenzung der Risiken an Fräsmaschinen für vierseitige Bearbeitung mit einer größtmögli-chen Arbeitsbreite von 350 mm, im Folgenden als ¿Maschinen" bezeichnet, die konstruiert sind zum Bearbeiten von Massivholz, Spanplatten, Faserplatten oder Sperrholz, sowie diesen Werkstoffen, wenn sie kunststoffbe-schichtet oder mit Kantenmaterial versehen sind.
Diese Europäische Norm behandelt die von der Maschine ausgehenden Gefährdungen, wie sie in Abschnitt 4 aufgelistet sind.
Diese Europäische Norm behandelt bei CNC-Maschinen nicht die Gefährdungen im Zusammenhang mit der elektromagnetischen Verträglichkeit (EMV).
Diese Europäische Norm gilt nicht für:
a) Gefährdungen im Zusammenhang mit Beschickungseinrichtungen (Magazine, Vorratsbehälter usw.);
b) Maschinen zur Bearbeitung von Rundholz, welches nicht vorbearbeitet worden ist.
Diese Europäische Norm ist in erster Linie auf Maschinen anzuwenden, die nach dem Datum der Herausgabe dieser Europäischen Norm hergestellt werden.
Sécurité des machines pour le travail du bois - Machines à moulurer sur quatre faces
La présente Norme européenne spécifie les prescriptions et/ou les mesures destinées à éliminer les phénomènes dangereux et limiter les risques sur les machines à moulurer sur quatre faces d'une largeur maximale de travail de 350 mm, désignées ci-après sous le terme machines, conçues pour usiner du bois massif, des panneaux de particules et de fibres, de contreplaqué, ainsi que ces matériaux lorsque leurs surfaces ou leurs chants sont recouverts de matière plastique stratifiée.
La présente Norme européenne couvre tous les phénomènes dangereux applicables à cette machine. Une liste de ces risques est donnée à l'article 4 de la présente norme.
La présente Norme européenne ne couvre pas, pour les machines de commande numérique (CNC), les risques liés à la compatibilité électromagnétique (CEM).
La présente Norme européenne ne s'applique pas :
a) aux phénomènes dangereux relatifs aux dispositifs d'amenage (magasins, trémies, etc.).
b) aux machines conçues pour la découpe de grumes non précédemment usinés.
La présente Norme européenne est applicable aux machines fabriquées après la date de publication.
Safety of woodworking machines - Four-sided moulding machines
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 12750:2002
01-januar-2002
Safety of woodworking machines - Four-sided moulding machines
Safety of woodworking machines - Four-sided moulding machines
Sicherheit von Holzbearbeitungsmaschinen - Fräsmaschinen für vierseitige Bearbeitung
Sécurité des machines pour le travail du bois - Machines a moulurer sur quatre faces
Ta slovenski standard je istoveten z: EN 12750:2001
ICS:
79.120.10 Lesnoobdelovalni stroji Woodworking machines
SIST EN 12750:2002 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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EUROPEAN STANDARD
EN 12750
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2001
ICS 79.120.10
English version
Safety of woodworking machines - Four-sided moulding
machines
Sécurité des machines pour le travail du bois - Machines à Sicherheit von Holzbearbeitungsmaschinen -
moulurer sur quatre faces Fräsmaschinen für vierseitige Bearbeitung
This European Standard was approved by CEN on 4 June 2001.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2001 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12750:2001 E
worldwide for CEN national Members.
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EN 12750:2001 (E)
CONTENTS
page
Foreword . 3
Introduction . 3
1 Scope . 3
2 Normative references . 4
3 Terms and definitions. 6
4 List of hazards. 10
5 Safety requirements and/or measures . 13
5.1 Controls . 13
5.2 Protection against mechanical hazards . 18
5.3 Protection against non-mechanical hazards. 28
6 Information for use. 32
6.1 Warning devices . 32
6.2 Marking . 32
6.3 Instruction handbook. 32
Annex A (informative) Example of a safety related control system. 35
Annex B (normative) Spindle specifications. 36
Annex C (normative) Table lip resistance test . 37
Annex D (informative) Safe working practice. 41
Annex ZA (informative) Clauses of this European Standard addressing essential requirements or other
provisions of EU Directives. 43
2
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EN 12750:2001 (E)
Foreword
This European Standard has been prepared by Technical Committee CEN/TC 142 "Woodworking machines
- Safety", the secretariat of which is held by BSI.
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 January 2002, and conflicting national standards shall be withdrawn
at the latest by January 2002.
This European Standard has been prepared under a mandate 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(s), see informative annex ZA, which is an integral part of this standard.
Organisations contributing to the preparation of this European Standard include European Committee of
Woodworking Machinery Manufacturers Association "EUMABOIS".
The annexes B and C are normative, the annexes A, D and ZA are informative.
The European Standards produced by CEN/TC142 are particular to woodworking machines and complement
the relevant A and B standards on the subject of general safety (see introduction of EN 292-1:1991 for a
description of A, B and C standards).
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark,
Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal,
Spain, Sweden, Switzerland and the United Kingdom.
Introduction
This European Standard is a type “C” standard as defined in EN 292:1991.
The extent to which hazards are covered is indicated in the scope of this European Standard.
The requirements of this European Standard concern designers, manufacturers, suppliers and importers of
four-sided moulding machines.
This European Standard also includes information which the manufacturer shall provide to the user.
Common requirements for tooling are given in EN 847-1:1997.
1Scope
This European Standard specifies the requirements and/or measures to remove the hazards and limit the risks
on four-sided moulding machines with a maximum working width of 350 mm hereafter referred to as
"machines" designed to cut solid wood, chipboard, fibreboard, plywood and also these materials where these
are covered with plastic laminate or edgings.
This European Standard covers the hazards relevant to this machine as listed in clause 4.
For Computer Numerically Controlled machines (CNC) this European Standard does not cover hazards
related to Electro-Magnetic Compatibility (EMC).
3
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EN 12750:2001 (E)
This European Standard does not apply to :
a) hazards relating to infeed devices (magazines, hoppers, etc.);
b) machines designed for machining logs which have not previously been machined.
This European Standard is primarily applicable to machines which are manufactured after the date of issue of
this European Standard.
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 292-1 : 1991 Safety of machinery - Basic concepts, general principles for design - Part 1:
Basic terminology, methodology
EN 292-2 : 1991 Safety of machinery - Basic concepts, general principles for design - Part 2:
EN 292-2/A1 : 1995 Technical principles and specifications
EN 294 : 1992 Safety of machinery - Safety distances to prevent danger zones being reached
EN 418 : 1992 Safety of machinery – Emergency stop equipment; functional aspects -
Principles for design
EN 847-1 : 1997 Tools for woodworking – Safety requirements - Part 1: Milling tools, circular
saw blades
EN 953 : 1997 Safety of machinery – Guards - General requirements for the design and
construction of fixed and movable guards
EN 954-1 : 1996 Safety of machinery - Safety related parts of control systems - Part 1: General
principles for design
EN 982 : 1996 Safety requirements for fluid power systems and components – Hydraulics
EN 983 : 1996 Safety requirements for fluid power systems and components - Pneumatics
EN 1088 : 1995 Safety of machinery – Interlocking devices associated with guards – Principles
for design and selection
EN 20354 : 1993 Acoustics – Measurement of sound absorption in a reverberation room
(ISO 354:1985)
EN 60204-1 : 1992 Safety of machinery – Electrical equipment of machines - Part 1 : General
requirements (IEC 204-1:1992, modified)
EN 60529 : 1991 Degrees of protection provided by enclosures (IP Code)
(IEC 60529:1989)
4
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EN 12750:2001 (E)
EN 60947-4-1 : 1992 Low voltage switchgear and control gear - Part 4: Contactors and motor
starters – Section 1 : Electromechanical contactors and motor starters
(IEC 60947-4-1:1990)
EN 60947-5-1 : 1997 Low voltage switchgear and control gear - Part 5-1: Control circuit devices and
switching elements - Electro-mechanical control circuit devices
(IEC 60947-5-1:1990)
EN ISO 3741 : 1999 Acoustics – Determination of sound power levels of noise sources using sound
pressure – Precision methods for broad-band sources in reverberation rooms
(ISO 3741:1999)
EN ISO 3743-1 : 1995 Acoustics – Determination of sound power levels of noise sources –
Engineering methods for small, movable sources in reverberant fields - Part 1:
Comparison method for hard walled test rooms (ISO 3743-1:1994)
EN ISO 3743-2 : 1996 Acoustics – Determination of sound power levels of noise sources -
Engineering methods for small, movable sources in reverberant fields - Part 2:
Method for special reverberation test rooms (ISO 3743-2:1994)
EN ISO 3744 : 1995 Acoustics – Determination of sound power levels of noise sources using sound
pressure – Engineering method in an essentially free field over a reflecting
plane (ISO 3744:1994)
EN ISO 3746 : 1995 Acoustics – Determination of sound power levels of noise sources using sound
pressure – Survey method employing an enveloping measurement surface over
a reflecting plane (ISO 3746:1995)
EN ISO 4871 : 1996 Acoustics – determination and verification of noise emission values of
machinery and equipment (ISO 4871:1996)
EN ISO 9614-1 : 1995 Acoustics – Determination of sound power levels of noise sources using sound
intensity - Part 1 : Measurement at discrete points (ISO 9614-1:1993)
EN ISO 11202 : 1995 Acoustics - Noise emitted by machinery and equipment – Survey method for
the measurement of emission sound pressure levels at the workstation and at
other specified positions - Survey method in situ (ISO 11202:1995)
EN ISO 11204 : 1995 Acoustics - Noise emitted by machinery and equipment –Determination of
emission sound pressure levels at the workstation and at other specified
positions - Method requiring environmental corrections (ISO 11204:1995)
EN ISO 11688-1 : 1998 Acoustics – Recommended practice for the design of low-noise
machinery and equipment – Part 1 : Planning (ISO/TR 11688-1:1995)
ISO 230-1 : 1998 Test code for machine tools – Part 1: Geometric accuracy of machines
operating under no-load or finishing conditions
ISO 3745 : 1977 Acoustics – Determination of sound power levels of noise sources - Precision
methods for anechoic and semi anechoic rooms
ISO 7960 : 1995 Airborne noise emitted by machine tools - Operating conditions for
woodworking machines
5
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EN 12750:2001 (E)
HD 21.1 S3 : 1997 Polyvinyl chloride insulated cables of rated voltages up to and including
450/750 V - Part 1: General requirements
HD 22.1 S3 : 1997 Rubber insulated cables of rated voltage up to and including 450/750 V - Part
1: General requirements
3 Terms and definitions
For the purposes of this European Standard the following terms and definitions apply :
3.1
four-sided moulding machine
a machine where the workpiece once loaded manually or by magazine, moves by an integrated feed
mechanism. Machines where the first feed roller is beyond the first tool are, for the purpose of this European
Standard, integrated fed machines. The machine has at least four work units, one on each side, with rotating
planing or moulding tools. The tool spindles have horizontal and/or vertical axes which can be adjusted
manually or under power
The machine can be fitted with additional work units such as universal spindles or glass bead saw units.
3.2
universal spindle
work unit, the position of which can be changed manually or under power so as to allow it to work at
different positions around the workpiece
3.3
glass bead saw unit
work unit fitted with a sawblade to cut out a glass bead from the machined profile of the workpiece (e.g. see
Figure 1)
6
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EN 12750:2001 (E)
Key
1 Glass bead sawblade
2 Riving knife
3 Guiding channel for bead ledge
4 Bead ledge
5 Anti-kickback finger
6 Feed roller
7Workpiece
8 Feed direction
Figure 1 - Example of a glass bead saw unit
3.4
hydraulic tool fixing device
device for clamping the tool to the spindle using hydraulic pressure
3.5
integrated feed
feed mechanism for the workpiece or tool which is integrated with the machine and where the workpiece or
machine element with incorporated tool are held and controlled mechanically during the machining operation
3.6
loading the machine
operation where the workpiece is manually or automatically placed on to a carriage, magazine, lift, hopper,
movable bed, conveyor or the presentation of the workpiece to an integrated feed device
3.7
cutting against the feed
when the relative rotational direction of the tool cutting point is opposite to the direction of the feed
3.8
climb cutting
when the relative rotational direction of the tool cutting point is in the same direction as the feed
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EN 12750:2001 (E)
3.9
cutting area of the tool
area of the tool involved in the cutting process
3.10
non-cutting area of the tool
area of the tool which is not involved in the cutting process
3.11
machine actuator
power mechanism used to effect motion of a machine
3.12
ejection
unexpected movement of the workpiece, parts of it or part of the machine from the machine during
processing
3.13
kickback
particular form of ejection describing the unexpected movement of the workpiece, part of it (or part of the
machine) opposite to the direction of feed during processing
NOTE The words in brackets are not applicable to this machine.
3.14
anti-kickback device
device which either reduces the possibility of kickback or arrests the motion during kickback of the
workpiece or parts of it (or parts of the machine, see Figure 1)
NOTE The words in brackets are not applicable to this machine.
3.15
catching finger device
device designed to prevent the ejection of divided workpieces (see Figure 2)
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EN 12750:2001 (E)
Key
1 Catching finger
2Workpiece
3 Feed direction
Figure 2 - Example of catching fingers
3.16
run-up time
time elapsed from the actuation of the start control device until the spindle reaches its intended speed
3.17
run-down time
time elapsed from the actuation of the stop control device up to complete spindle standstill
3.18
speed range
maximum and minimum speeds within which the tool spindle or tool is designed to operate
3.19
confirmation
statements, sales literature, leaflets or other documents where a manufacturer (or supplier) declares either the
characteristics or the compliance of the material or product to a relevant standard
3.20
integral enclosure
guarding designed to fit close to the machine and provide a measure of sound attenuation and where certain
setting adjustments may be available outside it
3.21
complete enclosure
total machine enclosure primarily designed for noise attenuation and to permit the operator to move around
freely within it and where all machine settings and adjustments are available inside it. Access is normally
through a door/opening
9
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EN 12750:2001 (E)
4List of hazards
This European Standard deals with all hazards listed and relevant to the machine as defined in the scope :
– for significant hazards by defining safety requirements and/or measures or by reference to relevant
type "B" standards;
– for hazards which are not significant e.g. general, minor or secondary hazards by reference to
relevant type A standards, especially EN 292-1:1991 and EN 292-2:1991/A1:1995.
These hazards are listed in Table 1 in accordance with annex A of EN 292-2:1991/A1:1995.
10
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EN 12750:2001 (E)
Table 1 - List of hazards
Number Hazard Relevant sub-clauses of
this European Standard
1 Mechanical hazards (caused for example by :
– shape,
– relative location,
– mass and stability (potential energy of elements),
– mass and velocity (kinetic energy of elements),
– inadequacy of the mechanical strength,
– accumulation of potential energy by :
· elastic elements (springs); or
· liquids or gases under pressure; or
· vacuum
of the machine parts or workpieces)
1.1 Crushing hazard 5.2.1, 5.2.7
1.2 Shearing hazard 5.2.7
1.3 Cutting or severing hazard 5.2.2, 5.2.3, 5.2.4, 5.2.7
1.4 Entanglement hazard 5.2.3, 5.2.4, 5.2.6, 5.2.7
1.5 Drawing-in or trapping hazard 5.2.7
1.6 Impact hazard 5.2.7.2
1.7 Stabbing or puncture hazard Not relevant
1.8 Friction or abrasion hazard Not relevant
1.9 High pressure fluid injection hazard 5.3.8
1.10 Ejection of parts (of machinery and processed 5.2.2, 5.2.3, 5.2.5, 5.2.6
material/workpieces)
1.11 Loss of stability (of machinery and machine parts) 5.2.1
1.12 Slip, trip and fall hazards in relationship with machinery Not relevant
(because of their mechanical nature)
2 Electrical hazards, caused for example by :
2.1 electrical contact (direct or indirect) 5.3.4, 5.3.15, 5.3.16
2.2 electrostatic phenomena Not relevant
2.3 thermal radiation or other phenomena such as ejection of Not relevant
molten particles, and chemical effects from short-circuits,
overloads etc.
2.4 external influences on electrical equipment 5.3.12
3 Thermal hazards resulting in :
3.1 burns and scalds, by a possible contact of persons, by flames or 5.3.1, 5.3.9
explosions and also by the radiation of heat sources
3.2 health-damaging effects by hot or cold work environment Not relevant
(continued)
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EN 12750:2001 (E)
Table 1 - List of hazards (continued)
Number Hazard Relevant sub-clauses of
this European Standard
4 Hazards generated by noise, resulting in :
4.1 hearing losses (deafness), other physiological disorders (e.g. 5.3.2
loss of balance, loss of awareness)
4.2 interference with speech communication, acoustic signals, etc. Not relevant
5 Hazards generated by vibration (resulting in a variety of Not relevant
neurological and vascular disorders)
6 Hazards generated by radiation, especially by :
6.1 electrical arcs Not relevant
6.2 lasers Not relevant
6.3 ionizing radiation sources Not relevant
6.4 machines making use of high frequency electromagnetic fields Not relevant
7 Hazards generated by materials and substances processed, used
or exhausted by machinery for example :
7.1 hazards resulting from contact with or inhalation of harmful 5.3.3
fluids, gases, mists, fumes and dusts
7.2 fire or explosion hazard 5.3.1
7.3 biological and microbiological (viral or bacterial) hazards Not relevant
8 Hazards generated by neglecting ergonomic principles in
machine design (mismatch of machinery with human
characteristics and abilities) caused for example by :
8.1 unhealthy postures or excessive efforts 5.1.2, 5.3.5
8.2 inadequate consideration of human hand-arm or foot-leg Not relevant
anatomy
8.3 neglected use of personal protection equipment 6.3
8.4 inadequate area lighting 5.3.6
8.5 mental overload or underload, stress, etc. Not relevant
8.6 human error Not relevant
9 Hazard combinations Not relevant
10 Hazards caused by failure of energy supply, breaking down of
machinery parts and other functional disorders, for example :
10.1 failure of energy supply (of energy and/or control circuits) 5.1.1, 5.1.12, 5.1.13
10.2 unexpected ejection of machine parts or fluids 5.2.2, 5.2.7, 5.3.15
10.3 failure, malfunction of control system (unexpected start up, 5.1.1
unexpected overrun)
10.4 errors of fitting 6.3
10.5 overturn, unexpected loss of machine stability Not relevant
(continued)
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EN 12750:2001 (E)
Table 1 - List of hazards (concluded)
Number Hazard Relevant sub-clauses of
this European Standard
11 Hazards caused by (temporary) missing and/or incorrect
positioned safety related measures/means, for example :
11.1 all kinds of guard Not relevant
11.2 all kinds of safety related (protection) devices Not relevant
11.3 starting and stopping devices 5.1.2, 5.1.3, 5.1.4, 5.1.5
11.4 safety signs and signals 6.2
11.5 all kinds of information or warning devices 6.2, 6.3
11.6 energy supply disconnecting devices 5.3.15
11.7 emergency devices 5.1.5
11.8 feeding/removal means of workpieces 6.3
11.9 essential equipment and accessories for safe adjusting and/or Not relevant
maintaining
11.10 equipment evacuating gases, etc. 5.3.3 and 6.3
5 Safety requirements and/or measures
For guidance in connection with risk reduction by design see clause 3 of EN 292-2:1991/A1:1995 and in
addition:
5.1 Controls
5.1.1 Safety and reliability of control systems
For the purpose of this European Standard safety related parts of control systems means the system from and
including the initial manual control or position detector or other sensor to the point of input to the final
actuator or element, e.g. motor. The safety related control systems of this machine are those for :
– starting (see 5.1.3);
– normal (manual) stopping (see 5.1.4);
– emergency stop (see 5.1.5);
– spindle speed (see 5.1.7);
– interlocking (see 5.2.7.1 and 5.2.7.4);
– interlocking with guard locking (see 5.2.5.2, 5.2.7.1 and 5.2.7.4);
– powered adjustment for positioning the spindles, feed roller height, fences, table height, chipbreaker
and pressure-shoes (see 5.1.9 and 5.1.10);
– preventing unexpected start-up in the event of failure of the power supply, (see 5.1.12);
– mode selection (if provided) (see 5.1.6);
– the braking system (see 5.2.4);
– trip device (see 5.2.7.2);
– holdtorun control device (see 5.1.6 (if provided), 5.1.9, 5.1.10).
These control systems shall as a minimum be designed and constructed using "well tried" components and
principles.
For the purpose of this European Standard "well tried" means for :
a) electrical components if they conform to relevant standards including the following :
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EN 12750:2001 (E)
i) EN 60947-5-1:1997 (section 3) for control switches with positive opening operation used as
mechanically actuated position detectors for interlocking of guards and for relays used in auxiliary
circuits;
ii) EN 60947-4-1:1992 for electromechanical contactors and motorstarters used in main circuits;
iii) HD 22.1 S3:1997 for rubber insulated cables;
iv) HD 21.1 S3:1997 for polyvinyl chloride cables if these cables are additionally protected against
mechanical damage by positioning (e.g. inside frames);
b) electrical principles if they conform to the first four measures listed in 9.4.2.1 of EN 60204-1:1992.
The circuits shall be either "hardwired", or if electronic components are used in safety related control
systems, they shall be in accordance with 9.4.2.2 (i.e. redundancy with cross-monitoring) or 9.4.2.3 (i.e.
diversity) of EN 60204-1:1992 (see also annex A);
c) mechanical components if they conform to 3.5 of EN 292-2:1991/A1:1995;
d) mechanically actuated position detectors for guards if they are actuated in the positive mode and
their arrangement/fastening and cam design/mounting comply with the requirements of 5.2 and 5.3 of
EN 1088:1995;
e) interlocking devices with guard locking if they are of the conditional unlocking type in accordance
with the requirements of Table 1 and annex M of EN 1088:1995;
f) pneumatic and hydraulic components and systems if they conform to EN 982:1996 and EN 983:1996
respectively.
As an exception time delay devices used in hardwired safety related control circuits may be of category B in
accordance with EN 954-1:1996 if it is designed for at least 1 million actuations.
Verification : By checking the relevant drawings and/or circuit diagrams and inspection of the machine. For
all components by requiring a confirmation from the manufacturer that the component conforms to the
relevant standard.
5.1.2 Position of controls
The following controls shall be located on the main control panel :
– for starting (spindles and feed);
– for normal stopping;
– mode selection switch (if required);
– for speed changing (if fitted).
These actuators shall be positioned between a height of 600 mm and 1800 mm from the servicing level.
For the positioning of the hold-to-run control used in the setting mode, see 3.7.8 c) of EN 292-
2:1991/A1:1995.
For the positioning of the emergency stops see 5.1.5.
Verification : By checking relevant drawings, measurement and inspection of the machine.
5.1.3 Starting
See 9.2.5.2, first and second sentence of EN 60204-1:1992 and in addition :
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EN 12750:2001 (E)
For the purposes of this European Standard "safeguards in place and functional" is achieved by the
interlocking arrangements described in 5.2.7. "Correct sequential starting" shall be achieved by the
interlocking arrangements required by 5.1.9. The requirements shall be satisfied at the level of the control
circuits (see also 5.1.6 and 5.1.9).
It shall be possible to start each spindle motor separately.
Verification : By checking relevant drawings and/or circuit diagrams, inspection and relevant functional
testing on the machine.
5.1.4 Normal stopping
A normal stop function shall be fitted which stops all machine actuators and cuts power to them once the
stopping sequence is complete.
If the machine is fitted with a mechanical brake, this stop function shall be of category 0 according to 9.2.2
of EN 60204-1:1992.
If the machine is fitted with an electrical brake, this stop function shall be of category 1 according to 9.2.2 of
EN 60204-1:1992 and the stopping sequence shall be:
a) cut power to all machine actuators and actuate the brake;
b) cut power to brake after braking sequence is complete.
The stopping sequence shall be satisfied at the level of the control circuits. If a time delay device is used the
time delay shall be at least equal to the maximum run-down time. Either the time delay shall be fixed or the
time delay adjustment device shall be sealed.
An emergency stop in accordance with 5.1.5 can also be used as a normal stop control, when it fulfils the
requirement of this clause.
Verification : By checking the relevant drawings and/or circuit diagrams, inspection and relevant functional
testing on the machine.
5.1.5 Emergency stop
See EN 418:1992 and in addition :
Machines shall be fitted with emergency stop(s) controls which shall conform to the requirements of 9.2.5.4
and 10.7 of EN 60204-1:1992. However 10.7.5 of EN 60204-1:1992 does not apply.
If the machine is fitted with a mechanical brake, this stop function shall be of category 0 according to 9.2.2
of EN 60204-1:1992.
If the machine is fitted with an electrical brake, this stop function shall be of category 1 according to 9.2.2 of
EN 60204-1:1992 and the stopping sequence shall be :
a) cut power to all machine actuators and actuate the brake;
b) cut power to brake after braking sequence is complete.
Emergency stop controls shall be fitted at the following locations :
c) such that they can be reached from the loading and unloading positions of the machine on both ends;
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EN 12750:2001 (E)
d) on each mobile set of controls (if provided) ;
e) not more than 0,5 m from each fixed hold to run control device ;
f) on the main control panel.
Verification : By checking relevant drawings and/or circuit diagrams, inspection, m
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