SIST EN 13788:2003

SLOVENSKI STANDARD
SIST EN 13788:2003
01-september-2003
2EGHORYDOQLVWURML9DUQRVW±9HþYUHWHQVNLDYWRPDWVNLVWURML
Machine tools - Safety - Multi-spindle automatic turning machines
Werkzeugmaschinen - Sicherheit - Mehrspindel-Drehautomaten
Machines-outils - Sécurité - Machines de tournage automatiques multibroches
Ta slovenski standard je istoveten z: EN 13788:2001
ICS:
25.080.10 Stružnice Lathes
SIST EN 13788:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 13788:2003

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SIST EN 13788:2003
EUROPEAN STANDARD
EN 13788
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2001
ICS
English version
Machine tools - Safety - Multi-spindle automatic turning
machines
Machines-outils - Sécurité - Machines de tournage Werkzeugmaschinen - Sicherheit - Mehrspindle-
automatiques multibroches Drehautomaten
This European Standard was approved by CEN on 5 October 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 13788:2001 E
worldwide for CEN national Members.

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SIST EN 13788:2003
EN 13788:2001 (E)
Contents
page
1 Scope .4
2 Normative references .4
3 Terms and definitions.6
4 List of significant hazards.10
5 Safety requirements and/or measures .16
6 Information for use .26
Annex A (informative) Example of check list for safety functions.30
Annex B (normative) Guards on turning machines – Impact test method.32
Annex C (informative) Test equipement for impact test and examples of materials .36
Annex D (normative) Noise emission measurement.38
Annex E (informative) Calculation of direct impact energy .39
Annex ZA (informative) Relationship of this document with EC Directives.40
Bibliography .41
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EN 13788:2001 (E)
Foreword
This European standard has been prepared by technical Committee CEN /TC 143, "Machine-tools - Safety", the
secretariat of which is held by SNV.
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 June 2002, and conflicting national standards shall be withdrawn at the latest by
June 2002.
This document has been prepared under a mandate given to CEN by the European Commission and the European
Free Trade Association, and supports essential requirements of EC Directive(s).
For relationship with EC Directive(s), see informative annex ZA, which is an integral part of this document.
The European standards produced by CEN/TC 143 are particular to machine-tools 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).
Annexes B and D are normative, annexes A, C and E are informative.
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
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SIST EN 13788:2003
EN 13788:2001 (E)
0 Introduction
This European Standard has been prepared to be a Harmonised Standard to provide one means of conforming to
the Essential Safety Requirements of the Machinery Directive and associated EFTA regulations.
This European Standard is a type C standard as defined in EN 292:1991 and EN 1070:1998.
The machinery concerned and the extent to which hazards, hazardous situation and events are covered is
indicated in the scope of this standard. In addition multi-spindle automatic turning machines shall comply as
appropriate with EN 292-1:1991 and EN 292-2 for hazards which are not covered by this standard. When
provisions of this C type standard are different from those which are stated in type A or B standards, the provision
of this C type standard take precedence over the provisons of the other standards for machines that have been
designed and built according to the provisions of this C type standard.
The requirements of this European Standard concern designers, manufacturers, suppliers and importers of
machines described in the scope.
This standard also includes information to be provided by the manufacturer to the user.
1 Scope
This European Standard specifies the requirements and/or measures to remove the hazards and limit the risks on
general purpose horizontal multi-spindle and vertical multi-spindle automatic turning machines which are designed
primarily to work cold metal as defined in 3.1 and hereafter referred to as "machines".
NOTE Hazards arising from other metal processes (e.g. grinding, laser processing) are covered by other standards (see
Bibliography).
Horizontal single spindle and vertical single spindle automatic turning machines are covered by EN 12415:2000.
This standard covers the significant hazards, listed in clause 4.

This standard applies to numerically and/or mechanically controlled multi-spindle automatic turning machines;
The standard also applies to ancillary devices, e.g. collets, power operated chucks, bar/workpiece handling devices
and swarf handling equipment which are integral to the machine.
This standard also applies to machines which are integrated into an automatic production line or turning cell in as
much as the hazards and risks arising are comparable to those of machines working separately.
This European Standard is not applicable to NC turning machines with machining facilities under manual control
which are dealt with in EN 12840:2001.
This standard applies to machines which are manufactured after the date of issue of this 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.
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EN 292-2:1991, Safety of machinery - Basic concepts, general principles for design - Part 2: Technical principles
and specifications
EN 292-2:1991/A1:1995, Safety of machinery - Basic concepts, general principles for design - Part 2: Technical
principles and specifications
EN 294:1992, Safety of machinery - Safety distances to prevent danger zones being reached by the upper limbs.
EN 349, Safety of machinery - Minimum gaps to avoid crushing of parts of the human body
EN 418:1992, Safety of machinery - Emergency stop equipment, functional aspects - Principles for design.
EN 547-1, Safety of machinery - Human body measurements - Part 1: Principles for determining the dimensions
required for openings for whole body access into machinery.
EN 547-2, Safety of machinery - Human body measurements - Part 2: Principles for determining the dimensions
required for access openings.
EN 563:1994, Safety of machinery – Temperatures of touchable surfaces – Ergonomic data to establish
temperature limit values for hot surfaces
EN 574:1996, Safety of machinery - Two hand control devices – Functional aspects – Principles for design.
EN 614-1, Safety of machinery - Ergonomic design principle
EN 894-1:1997, Safety of machinery - Ergonomic requirements for the design of displays and control actuators –
Part 1: General principles for human interactions with displays and control actuators.
EN 894-2:1997, Safety of machinery - Ergonomic requirements for the design of displays and control actuators –
Part 2: Displays.
EN 894-3:2000, Safety of machinery - Ergonomic requirements for the design of displays and control actuators –
Part 3: Control actuators.
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 of machinery - Safety requirements for fluid power systems and their components -
Hydraulics.
EN 983:1996, Safety of machinery - Safety requirements for fluid power systems and their components -
Pneumatics.
EN 999, Safety of machinery – The positioning of protective equipment in respect of approach speeds of parts of
the human body
EN 1005-1, Safety of machinery - Human physical performance - Part 1: Terms and definitions
prEN 1005-2, Safety of machinery - Human physical performance - Part 2: Manual handling of machinery and
component parts of machinery
EN 1005-3, Safety of machinery - Human physical performance - Part 3: Recommended force limits for machinery
operation
prEN 1005-4, Safety of machinery - Human physical performance - Part 4: Evaluation of working postures in
relation to machinery
EN 1037:1995, Safety of machinery - Prevention of unexpected start up.
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EN 1050:1996, Safety of machinery - Principles for risk assessment.
EN 1070:1998, Safety of machinery - Terminology.
EN 1088:1995, Safety of machinery - Interlocking devices associated with guards – Principles for design and
selection.
EN 1550:1997, Machine tools safety - Safety requirements for the design and construction of work holding chucks.
EN 1760-2, Safety of machinery - Pressure sensitive protective devices - Part 2: General principles for the design
and testing of pressure sensitive edges and pressure sensitive bars.
EN 1837:1999, Safety of machinery - Integral lighting of machines.
ENV 26385, Ergonomic principles of the design of work systems (ISO 6385:1981).
EN 60204-1:1997, Safety of machinery - Electrical equipment of machines - Part 1: General requirements (IEC
60204-1:1997).
EN 60529:1991, Degrees of protection provided by enclosures (IP code) (IEC 60529:1989).
EN ISO 3744:1995, Acoustics - Determination of sound power level 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 level of noise sources using sound pressure -
Survey method using an enveloping measurement surface over a reflecting plane (ISO 3746:1995).
EN ISO 4871:1996, Acoustics – Declaration and verification of noise emission values of machinery and equipment
(ISO 4871:1996).
EN ISO 9614-1:1995, Acoustics - Determination of sound power level 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 - Measurement of emission sound
pressure levels at a work station and at other specified positions - Survey method in situ (ISO 11202:1995).
EN ISO 11204: 1995, Acoustics - Noise emitted by machinery and equipment - 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)
3 Terms and definitions
For the purposes of this European Standard, in addition to the terms and definitions given in EN 292:1991,
EN 418:1992 and EN 1070:1998, the following terms and definitions apply:
3.1
multi spindle automatic turning machine
horizontal spindle or vertical spindle turning machine, designed for batch production of parts according to an NC
and/or mechanical (e.g. by cam or template) preset program with fixed sequence of operation. Machining under
manual control is not possible
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Figure 1 a) — Multi spindle NC bar automatic with second carrier for counterspindles
Figure 1 b) — Multi spindle cam controlled bar automatic
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EN 13788:2001 (E)
Figure 1 c) — Vertical multi spindle NC turning machine with chuck
Figure 1 — Examples of multi-spindle automatic turning machines
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EN 13788:2001 (E)
The machine is equipped with two or more work holding spindles held by a spindle carrier. The machine may be
equipped with additional features e.g. power driven tools and one or more sub/counter spindles. The drives of the
work holding spindles, tool spindles and sub/counter spindles may be by common and/or independent drives. The
work holding devices are either power operated chucks or collets.
The machine is designed to perform progressive machining (as a transfer turning machine).
3.2
machine modes of operation
NOTE Definitions of modes of NC are given below:
mode of NC: A mode of operation of the NC or data entry device where entries are interpreted as functions to be
executed.
a) manual mode of NC: Non automatic mode of NC of a machine in which the operator controls it without the
use of pre-programmed numeric data for example by push button or joystick control ;
b) manual data input mode: The entry of programme data by hand at the NC ;
c) single block mode: The mode of NC in which, at the initiation of the operator only one block of control data is
executed ;
d) automatic mode: The mode of NC in which the machine operates in accordance with the programme data
until stopped by the program or the operator.
3.2.1
machining mode
automatic, programmed, sequential operation of the machine with the facility for automatical bar feed or automatic
or manual loading and/or unloading of workpieces
3.2.2
machine setting mode
mode in which the operator performs adjustments for the subsequent machining process
The programming, testing and manual (under power) non sequential operation of the machine.
3.3
chuck
clamping device with movable jaws to hold a workpiece designated here after by chuck (see Figure 2)
Figure 2 — Chuck
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3.4
collet
device designed to hold the bar into the turning spindle e.g. by pressure bar or draw bar (see Figure 3)
Figure 3 — Collet
4 List of significant hazards
The significant hazards associated with the machine have been identified (see Table 1) in accordance with the
procedures described in clause 5 of EN 292-1:1991 and EN 1050:1996.
The safety requirements and/or measures to eliminate these hazards or reduce their associated risks are laid down
in clause 5 of this standard.
The significant hazards covered by this standard are listed in Table 1. Particular attention is given to hazards
dealing with:

ejection of tools, chuck jaws, workpieces or parts of them including swarf and chips (see 17 in Table 1);

entanglement on or drawing into moving parts of the machine, particularly chucks, powered indexing
spindle carrier, powered tools, and workpiece (see 1.4 and 1.5 in Table 1);

cutting and crushing between moving and fixed/moving parts of the machine (see 1.1 and 1.3 in Table 1);

fire (see 7.2 in Table 1).
Main danger zones are:

working areas with moving spindle(s), work clamping components such as chuck and collet, tool carrying
slide(s), indexing spindle carrier, workpiece(s), swarf handling equipment (if integrated);

workpiece loading/unloading devices including bar feeders;

change gears, cam mechanism area.
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Table 1 — List of significant hazards
EN 292
EN 1050
refer. Hazards Annex A of Hazardous situation Relevant type B standard Relevant
Part 1: Part 2:
EN 292-2:1991/ clause in this
1991 1991
N°
standard
A1:1995
Hazards, hazardous situations and hazardous events
1 Mechanical hazards due to:
- machine parts or workpiece, e.g.: 1.3 4.2 3.1, 3.2, 4
a) shape;
b) relative location;
c) mass and stability (potential energy of elements
which may move under the effect of gravity);
d) mass and velocity (kinetic energy of elements in
controlled or uncontrolled motion);
e) inadequacy of mechanical strength.
- accumulation of energy inside the machinery,
1.5.3, 1.6.3 4.2 3.8, 6.2.3
e.g.:
f) elastic elements (springs);
g) liquids and gases under pressure;
h) the effect of vacuum.
EN 294, EN 349, EN 574, EN 953,
1.1 Crushing hazard 1.3 4.2.1 Between fixed and moving part 5.1.3, 5.1.7,
EN 1088
including work clamping (chuck or 5.2.1, 5.2.1.4,
collet) tool slides, indexing spindle 5.2.4.1, 5.2.4.4
carrier and chip conveyor.
EN 294, EN 349, EN 574, EN 953,
1.2 Shearing hazard 1.3 4.2.1 Between fixed and moving part tool 5.1.7, 5.2.4.1
EN 1088
slides, indexing spindle carrier and
chip conveyor.
EN 294, EN 953
1.3 Cutting or severing hazard 1.3 4.2.1 During tool motion, by tools, swarf. 5.1.3, 5.1.7
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Table 1 — List of significant hazards (continued)
EN 1050
Relevant type B standard
refer. Hazards Annex A of EN 292 Hazardous situation Relevant
EN 292-2:1991/ clause in this
Part 1: Part 2:
N°
standard
A1:1995
1991 1991
EN 294, EN 953, EN 1088
1.4 Entanglement hazard 1.3 4.2.1 By moving part including bar feed and 5.1.1, 5.1.3,
tool slides, indexing spindle carrier 5.1.7, 5.2.4.1,
and chip conveyor. 5.2.4.2, 5.2.3.4
EN 294, EN 953
1.5 Drawing-in or trapping hazard 1.3 4.2.1 By moving part, tool slides, indexing 5.1.1, 5.1.3,
spindle carrier and chip conveyor. 5.1.7.
EN 294, EN 1760-2, EN 953,
1.6 Impact hazard 1.3 4.2.1 By moving part including bar feed and 5.1.1, 5.1.3,
EN 1088
by contact with tools. 5.1.7, 5.2.4.1,
5.2.3.2
EN 982
1.7 Stabbing or puncture hazard 1.3 4.2.1 At tool holding when changing or at 5.2.1, 6.2
contact with tools.
EN 982, EN 953, EN 1088
1.9 High pressure fluid injection or ejection hazard 1.3.2 4.2.1 3.8 At coolant delivery. 5.2.3
2 Electrical hazards due to:
EN 60204-1
2.1 Contact of persons with live parts (direct contact) 1.5.1, 1.6.3 4.3 3.9, 6.2.3 At electrical equipment during 5.3.4
maintenance.
EN 60204-1
2.2 Contact of persons with parts which have become live 1.5.1 4.3 3.9 At electrical equipment during setting, 5.3.4
under faulty conditions (indirect contact) machining and maintenance.
3 Thermal hazards, resulting in:
EN 563
3.1 Burns scalds and other injuries by a possible contact of 1.5.5, 1.5.6, 1.5.7 4.4 At hot swarf, workpiece or tools 6.2
persons with objects or materials with an extreme high or
low temperature, by flames or explosions and also by the
radiation of lie at sources
4 Hazards generated by noise, resulting in:
EN ISO 3746, EN ISO 11202,
4.1 Hearing loss (deafness), other physiological disorders 1.5.8 4.5 3.2, 4 From cutting process and from bar 6.2.6 ; 5.3.9
EN ISO 3744, EN ISO 9614-1
(e.g. loss of balance, loss of awareness) feed.
EN ISO 11688-1
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Table 1 — List of significant hazards (continued)
EN1050
refer. Hazards Annex A of EN 292 Hazardous situation Relevant type B standard Relevant
EN 292-2:1991/ clause in this
N° Part 1: Part 2:
standard
A1:1995
1991 1991
6 Hazards generated by radiation
6.1 Low frequency, radio frequency radiation, micro waves 1.5.10 4.7 At electrical equipment. 5.3.4
7 Hazards generated by materials and substances (and
their constituent elements) processed or used by the
machinery
7.1 Hazards from contact with or inhalation of harmful fluids, 1.1.3, 1.5.13, 4.8 3.3b, 3.4 At cutting fluids circuit during setting 5.3.2, 6.2
gases, mists, fumes, and dusts 1.6.5 machining and maintenance.
7.2 Fire or explosion hazard 1.5.6, 1.5.7 4.8 3.4 At workzone during machining 5.3.1, 6.2.6
7.3 Biological or micro biological (viral or bacterial) hazards 1.1.3, 1.6.5, 2.1 4.8 At cutting fluids circuit during 5.3.2, 6.2
loading/unloading maintenance
8 Hazards generated by neglecting ergonomic
principles in machinery design as, e.g. hazards from:
8.1 Unhealthy postures or excessive effort 1.1.2d, 1.1.5, 4.9 3.6.1, 6.2., At control devices and during EN 614-1 5.1.2, 5.3.4
1.6.2, 1.6.4 6.2.4, 6.2.5, handling of workpiece tools and
6.2.7 machine parts.
8.2 Inadequate consideration of hand-arm of foot-leg 1.1.2d, 2.2 4.9 3.6.2 At work/tool exchange. EN 1005-1, prEN 1005-2, EN 5.3.4
anatomy 1005-3 and prEN 1005-4
8.3 Neglected use of personal protection equipment 1.1.2e 3.6.6 Manual operation/handling of tools 6.2
during bar machining.
8.4 Inadequate local lighting 1.1.4 3.6.5 At cutting process, during setting, EN 1837 5.3.2
handling/positioning of workpiece
8.6 Human error, human behaviour 1.1.2d, 1.2.2, 4.9 3.6, 3.7.8, At CN display, mode of operation, 5.1.6, 5.1.7,
1.2.5, 1.2.8, 3.7.9, 5, 6.1.1 work clamping. 5.2.1, 6.2
1.5.4, 1.7
10 Unexpected start-up, unexpected overrun/overspeed
(or any similar malfunction) from:
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Table 1 — List of significant hazards (concluded)
EN 1050
refer. Hazards Annex A of EN 292 Hazardous situation Relevant type B standard Relevant
EN 292-2:1991/ clause in this
Part 1: Part 2:
N°
A1:1995 standard
1991 1991
EN 60204-1
10.1 Failure disorder of the control system 1.2.7, 1.6.3 3.7, 6.2.3 Control malfunction with consequent 5.1.1, 5.1.9,
misapplication, work clamping failure 5.1.10
and overspeed.
EN 60204-1, EN 1037
10.2 Restoration of energy supply after an interruption 1.2.6 3.7.2 During machining, setting 5.1.10
maintenance.
10.3 External influences on electrical equipment 1.2.1, 1.5.11, 3.7.11 At NC control equipment during 5.1.9
4.1.2.8 machining setting and maintenance.
12 Variation in the rotational speed of tools 1.3.6 3.2, 3.3 During setting – Machining 5.1.8
EN 60204-1
13 Failure of power supply 5.1.10
1.2.6 3.7, 3.7.2 Control malfunction with consequent
misapplication, work clamping failure
and overspeed
EN 954-1
14 Failure of the control circuit 1.2.7, 1.6.3 3.7, 6.2.3 Undetected failure of control system 5.1.1, 5.1.9
causing malfunction, unexpected
1.2.1, 1.2.3 movements during tool/work clamping
change.
1.2.4, 1.2.5
15 Errors of fitting 1.5.4 4.9 5.5, 6.2.2 During tool, work clamping change. 5.3.12, 6.2
16 Break up during operation 1.3.2 4.2.2 3.3 During machining 5.2.3, 5.2.5
17 Falling or ejected objects or fluids
1.3.3 4.2.2 3.3, 3.8 At work clamping, during machining, 5.2.1, 5.2.3,
at bar feed and coolant (workpiece, 5.2.3.4, 6.2.6
part of tool swarf).
19 Slip, trip and fall of persons (related to machinery)) 1.5.15 4.2.3 6.2.5 Where coolant escape. 5.2.3, 5.2.4.1,
5.2.3.4, 6.2
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5 Safety requirements and/or measures
Multi-spindle automatic turning machines shall comply with the safety requirements and/or measures of this clause 5.
In addition, the machine shall be designed according to the principles in clause 5 and clause 6 of EN 292:1991 for
hazards relevant but not significant which are not dealt with by this standard.
For guidance in connection with risk reduction by design, see clause 3 of EN 292-2:1991, and for safeguarding
measures, see clause 4 of EN 292-2:1991.
NOTE For machines which present additional hazards or do not conform to this standard guidance on risk assessment can be
found in EN 1050:1996 and on measures to be taken for hazards elimination and risk reduction in EN 292-1 and
EN 292-2:1991.
The designers attention is focused on hazards which can occur during the life of the machine to both operator and other persons
who have access to the danger zone(s) for conditions of intended use including reasonably foreseeable misuse of the machine (see
3.12 in EN 292-1:1991). The hazards for both machining operation and/or operations requiring intervention by the operator and/or
other personnel (e.g. setting, cleaning maintenance and repair) have to be considered. An analysis of failure of machine
components including failure in the control system(s) is part of the risk assessment and guidance on this subject is given in EN 954-
1:1996.
5.1 Control systems general
In addition to the requirements in 5.1.1 to 5.1.10, below see 3, 3.7 and 3.10 of EN 292-2:1991.
5.1.1 Safety and reliability of control systems
For the purpose of this standard, safety related part of a control system means the entire system from the initial
actuator (control device) or position detector to the point of input to the final actuator or element, e.g. motor. Safety
related parts of control system deal with the following functions and shall fulfil the requirements of the categories given
below according to EN 954-1:1996:

starting and restart category 1 (see 5.1.3);

operational stop category 1 (see 5.1.4);

selected maximum spindle speed monitoring category 2 or 3 (see 5.1.8);

emergency stop category 1 or 3 (see 5.1.5);

mode selection category 1 (see 5.1.7);

interlocking category 1 or 3 (see 5.2.4.2, 5.2.4.3, 5.2.4.4, 5.2.4.5, 5.2.5);

interlocking with guard locking category 3 (see 5.2.4.1, 5.2.5.2);

axis movement (including reduced speed feeding): category 2 (see 5.1.8);

hold-to-run category 3 (see 5.1.7);

workpiece clamping category 1 (see 5.2.1).
Any combination of safety related parts of the control system to different categories according to EN 954-1:1996 which
achieve at least the same level of fault resistance is acceptable according to 6.3 in EN 954-1:1996.
Verification: By checking the relevant drawings and/or circuit diagrams and inspection on the machine. For
components by requiring confirmation of conformity with the relevant standards from the manufacturer.
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5.1.2 Position of control devices
Control devices shall be located in accordance to EN 894-1:1997, EN 894-2:1997 and EN 894-3:2000 and conform to
clause 10 of EN 60204-1:1997 (see also 5.1.5).
Verification: By checking the relevant drawings and inspection of the machines.
5.1.3 Starting
For the purpose of this standard the condition in 9.2.5.2 of EN 60204-1:1997 "Safeguards in place and functional" is
achieved by the interlocking arrangements required in 5.1.7.2 and 5.1.7.3.
Start and restart function shall conform to category 1 of EN 954-1:1996.
Starting various machine functions depends upon the machine mode of operation selected (see 5.1.7).
The closure of the movable guards shall not result in the restart of moving machine parts except if closure of the guard
is powered, the guard being fitted with sensitive edges (see 5.2.5.3).
Unexpected start up of hazardous movements, e.g. of work holding spindle, axes, indexing spindle carrier, tool holding
slides or workpiece clamping devices, shall be prevented according to clause 6 of EN 1037:1995 when the movable
guards are open.
In machining mode, the machine may only be started or restarted when the guards are closed by actuation of the start
device provided for that purpose.
See 9.2.5.2 of EN 60204-1:1997.
Verification: By checking the relevant drawings and/or ci
...