EN 1870-14:2007+A1:2009

SLOVENSKI STANDARD
01-december-2009
Varnost lesnoobdelovalnih strojev - Krožne žage - 14. del: Vertikalni krožni žagalni
stroji
Safety of woodworking machines - Circular sawing machines - Part 14: Vertical panel
sawing machines
Sicherheit von Holzbearbeitungsmaschinen - Kreissägemaschinen - Teil 14:
Vertikalplattenkreissägemaschinen
Sécurité des machines pour le travail du bois - Machines à scier circulaires - Partie 14:
Scies à panneaux verticales
Ta slovenski standard je istoveten z: EN 1870-14:2007+A1:2009
ICS:
25.080.60 Strojne žage Sawing machines
79.120.10 Lesnoobdelovalni stroji Woodworking machines
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 1870-14:2007+A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2009
ICS 79.120.10 Supersedes EN 1870-14:2007
English Version
Safety of woodworking machines - Circular sawing machines -
Part 14: Vertical panel sawing machines
Sécurité des machines pour le travail du bois - Machines à Sicherheit von Holzbearbeitungsmaschinen -
scier circulaires - Partie 14: Scies à panneaux verticales Kreissägemaschinen - Teil 14:
Vertikalplattenkreissägemaschinen
This European Standard was approved by CEN on 22 November 2007 and includes Amendment 1 approved by CEN on 20 August 2009.

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 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 Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1870-14:2007+A1:2009: E
worldwide for CEN national Members.

Contents Page
Foreword .4
Introduction .6
1 Scope .6
2 Normative references .7
3 Terms and definitions .9
4 List of significant hazards . 13
5 Safety requirements and / or measures . 16
5.1 General . 16
5.2 Controls . 16
5.2.1 Safety and reliability of control systems . 16
5.2.2 Position of controls . 17
5.2.3 Starting . 17
5.2.4 Normal stopping . 18
5.2.5 Emergency stop . 19
5.2.6 Cutting cycle on vertical panel sawing machines with integrated feed . 20
5.2.7 Speed changing . 21
5.2.8 Failure of the power supply . 21
5.2.9 Failure of the control circuits . 22
5.3 Protection against mechanical hazards . 22
5.3.1 Stability . 22
5.3.2 Hazard resulting from break-up during operation . 22
5.3.3 Tool holder and tool design . 23
5.3.4 Braking . 23
5.3.5 Devices to minimise the possibility or the effect of ejection . 24
5.3.6 Work piece supports and guides . 28
5.3.7 Prevention of access to moving parts . 30
5.3.8 Guarding of drives . 33
5.4 Protection against non-mechanical hazards . 33
5.4.1 Fire . 33
5.4.2 Noise . 33
5.4.3 Emission of chips and dust . 34
5.4.4 Electricity . 35
5.4.5 Ergonomics and handling . 36
5.4.6 Pneumatics . 36
5.4.7 Electromagnetic compatibility . 37
5.4.8 Static electricity . 37
5.4.9 Errors of fitting . 37
5.4.10 Supply disconnection (isolation) . 37
5.4.11 Maintenance . 38
6 Information for use . 38
6.1 Warning devices . 38
6.2 Marking . 38
6.2.1 Marking of the machine . 38
6.2.2 Marking of riving knives and pressure shoes . 39
6.3 Instruction handbook . 39
Annex A (informative) Use of well tried components . 43
Annex B (normative) Impact test method for guards . 44
B.1 General . 44
B.2 Test method . 44
B.2.1 Preliminary remarks . 44
B.2.2 Testing equipment . 44
B.2.3 Projectile for guards . 44
B.2.4 Sampling. 44
B.2.5 Test procedure . 44
B.3 Results . 45
B.4 Assessment . 45
B.5 Test report . 45
B.6 Test equipment for impact test . 45
Annex C (normative) Saw spindle dimensional tolerances . 47
Annex D (normative) Riving knife mounting strength test . 48
Annex E (normative) Riving knife testing - Lateral stability . 49
Annex F (normative) Braking tests . 50
F.1 Conditions for all tests . 50
F.2 Tests . 50
F.2.1 Un-braked run-down time . 50
F.2.2 Braked run-down time . 50
Annex G (normative) Use of electronic components . 51
G.1 General . 51
G.2 SRECS design . 51
G.2.1 Components, hardware . 51
G.2.2 Safety related software . 52
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 98/37/EC . 54
Annex ZB (informative) !Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC" . 57
Bibliography . 61

Foreword
This document (EN 1870-14:2007+A1:2009) has been prepared by Technical Committee CEN/TC 142
“Woodworking machines - Safety”, the secretariat of which is held by UNI.
This document shall be given the status of a national standard, either by publication of an identical text or by
endorsement, at the latest by April 2010 and conflicting national standards shall be withdrawn at the latest by
April 2010.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document includes Amendment 1, approved by CEN on 2009-08-20.
This document supersedes !EN 1870-14:2007".
The start and finish of text introduced or altered by amendment is indicated in the text by tags!"͘
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 the !Machinery Directives".
!For relationship with EU Directive(s), see informative Annexes ZA and ZB, which are integral parts of this
document."
Organisations contributing to the preparation of this European Standard include the European Committee of
Woodworking Machinery Manufacturers Association "EUMABOIS".
The European Standards produced by CEN/TC 142 are particular to woodworking machines and complement
the relevant A and B Standards on the subject of general safety (see introduction of EN ISO 12100-1:2003 for
a description of A, B and C standards).
EN 1870 Safety of woodworking machines — Circular sawing machines consists of the following parts:
Part 1: Circular saw benches (with and without sliding table), dimension saws and building site saws
!deleted text"
Part 3: Down cutting cross-cut saws and dual purpose down cutting cross-cut saws/circular saw benches
Part 4: Multiblade rip sawing machines with manual loading and/or unloading
Part 5: Circular saw benches/up-cutting cross-cut sawing machines
Part 6: Circular sawing machines for firewood and dual purpose circular sawing machines for firewood/circular
saw benches, with manual loading and/or unloading
Part 7: Single blade log sawing machines with integrated feed table and manual loading and/or unloading
Part 8: Single blade edging circular rip sawing machines with power driven saw unit and manual loading
and/or unloading
Part 9: Double blade circular sawing machines for cross-cutting with integrated feed and with manual loading
and/or unloading
Part 10: Single blade automatic and semi-automatic up-cutting cross-cut sawing machines
Part 11: Semi-automatic and automatic horizontal cross-cut sawing machines with one saw unit (radial arm
saws)
Part 12: Pendulum cross-cut sawing machines
Part 13: Horizontal beam panel sawing machines
Part 14: Vertical panel sawing machines
Part 15: Multiblade cross-cut sawing machines with integrated feed of the workpiece and manual loading
and/or unloading
Part 16: Double mitre sawing machines for V-cutting
Part 17: Manual horizontal cutting cross-cut sawing machines with one saw unit (manual radial arm saws)
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and United Kingdom.

Introduction
This document 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 document is a type C standard as defined in EN ISO 12100-1:2003.
The machinery concerned and the extent to which hazards, hazardous situations and events covered are
indicated in the scope of this document.
When provisions of this type C standard are different from those which are stated in type A or B standards, the
provisions of this type C standard take precedence over the provisions of other standards, for machines that
have been designed and built according to the provisions of this type C standard.
The requirements of this document are directed to manufacturers and their authorised representatives of
vertical panel sawing machines. This document is also useful for designers and importers.
This document also includes provision and examples of information to be provided by the manufacturer to the
user.
Common requirements for tooling are given in !EN 847-1:2005".
1 Scope
This document !specifies all" significant hazards, hazardous situations and events as listed in Clause 4
which are relevant to manually loaded and unloaded vertical panel sawing (with or without integrated feed)
machines fitted with:
 the facility for scoring;
 an angle cutting device;
 a middle support device;
 a programmable stop for parallel vertical cuts;
 the facility for grooving with a width of at most 20 mm in one pass by using a milling tools,
hereinafter referred to as "machines" when they are used as intended and under the conditions foreseen by
the manufacturer.
The machines are designed for cutting panels of the following materials:
a) wood based materials such as chipboard, fibreboard, plywood and also these materials where they are
covered with plastic / light alloy laminates;
b) solid wood;
c) hardened rubber and hardened plastic material;
d) non ferrous materials e.g. light alloy;
e) compound materials with core consisting of polyurethane or mineral material laminated with light alloy.
This document does not apply to vertical panel saws with pressure beam and saw unit mounted behind the
workpiece support.
This document does not deal with hazards relating to the combination of a single machine being used with any
other machine (as part of a line).
This document is not applicable to vertical panel saws which are manufactured before the date of its
publication as EN.
NOTE Machines covered by this standard are listed under A.1.4 of annex IV of the Machinery Directive.
2 Normative references
The following referenced documents are indispensable for the application 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.
!deleted text"
!EN 847-1:2005", Tools for woodworking — Safety requirements — Part 1: Milling tools, circular saw
blades
EN 894-1:1997, Safety of machinery — Ergonomics requirements for the design of display and control
actuators — Part 1: General principles for human interactions with displays and control actuators
EN 894-2:1997, Safety of machinery — Ergonomics requirements for the design of display and control
actuators — Part 2: Displays
EN 894-3:2000, Safety of machinery — Ergonomics requirements for the design of display and control
actuators — Part 3: Control actuators
EN 983:1996, Safety of machinery — Safety requirements for fluid power systems and their components —
Pneumatics
EN 1005-1:2001, Safety of machinery — Human physical performance — Part 1: Terms and definitions
EN 1005-2:2003, Safety of machinery — Human physical performance — Part 2: Manual handling of objects
associated to machinery
EN 1005-3:2002, Safety of machinery — Human physical performance — Part 3: Recommended force limits
for machinery operation
EN 1005-4:2005, 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
EN 1088:1995, Safety of machinery — Interlocking devices associated with guards — Principles for design
and selection
EN 50178:1997, Electronic equipment for use in power installations
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 60204-1:2006, Safety of machinery — Electrical equipment of machines — Part 1: General requirements
(IEC 60204-1:2005, modified)
EN 60439-1:1999, Low-voltage switchgear and controlgear assemblies — Part 1: Type-tested and partially
type-tested assemblies (IEC 60439-1:1999)
EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989)
!EN 61310-1:2008, Safety of machinery — Indication, marking and actuation — Part 1: Requirements for
visual, acoustic and tactile signals (IEC 61310-1:2007)"
EN 61496-1:2004, Safety of machinery — Electro−sensitive protective equipment — Part 1: General
requirements and tests (IEC 61496-1:2004, modified)
EN 61508-3:2001, Functional safety of electrical/electronic/programmable electronic safety-related systems —
Part 3: Software requirements (IEC 61508-3:1998 + Corrigendum 1999)
EN 62061:2005, Safety of machinery — Functional safety of safety related electrical, electronic and
programmable control systems for machinery (IEC 62061:2005)
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 using sound
pressure — Engineering methods for small movable sources in reverberant fields — Part 2: Methods for
special reverberant 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 3745:2003, Acoustics — Determination of sound power levels of noise sources using sound pressure
— Precision methods for anechoïc and semi-anechoïc rooms (ISO 3745:2003)
EN ISO 3746:1995, Acoustics — Determination of sound power levels 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 levels of noise sources using sound
intensity — Part 1: Measurement at discreet points (ISO 9614-1:1993)
EN ISO 11202:1995, Acoustics - Noise emitted by machinery and equipment — Measurement of emission
sound pressure levels at the 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 — Measurement of emission
sound pressure levels at the work station 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)
EN ISO 12100-1:2003, Safety of machines — Basic concepts, general principles for design — Part 1: Basic
terminology, methodology (ISO 12100-1:2003)
EN ISO 12100-2:2003, Safety of machines — Basic concepts, general principles for design — Part 2:
Technical principles (ISO 12100-2:2003)
!EN ISO 13849-1:2008", Safety of machinery — Safety-related parts of control systems — Part 1:
General principles for design (ISO 13849-1:2006)
!EN ISO 13849-2:2008", Safety of machinery — Safety-related parts of control systems — Part 2:
Validation (ISO 13849-2:2003)
EN ISO 13850:2006, Safety of machinery — Emergency stop equipment — Principles for design
(ISO 13850:2006)
!EN ISO 13857:2008, Safety of machinery — Safety distances to prevent hazard zones being reached by
upper and lower limbs (ISO 13857:2008)"
ISO 7960:1995, Airborne noise emitted by woodworking machine tools — Operating conditions for
woodworking machines
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 12100-1:2003 and the following
apply.
3.1
vertical panel sawing machine
machine designed for cutting panels where the work piece is supported in a near vertical plane during cutting.
The saw unit is mounted in front of the workpiece support (example see Figures 1). The cut takes place either
in a single straight vertical line by moving the saw unit along the moving beam or in a single horizontal line by
moving the moving beam along the work piece support. The work piece is manually loaded and unloaded. The
machine may have any of the following main features:
a) the facility for scoring;
b) an angle cutting device;
c) a middle support device;
d) a programmable stop for parallel vertical cuts;
e) the facility for using grooving tools
Key
1 frame
2 moving beam
3 saw unit
4 base of workpiece support
5 middle support device
Figure 1 — Example of a vertical panel sawing machine
3.2
vertical panel sawing machine with hand feed
machine where the saw unit incorporating the saw blade is manually guided along the moving beam for
vertical cuts or manually guided together with the moving beam along the workpiece support for horizontal
cuts
3.3
vertical panel sawing machine with integrated feed
machine where the saw unit incorporating the saw blade has integrated feed for its vertical movement along
the moving beam and / or for its horizontal movement by moving the moving beam along the work piece
support. The saw blade is automatically projected through the work piece during the cutting stroke and then
retracted together with the saw unit from the work piece to its rest position followed by the return stroke of the
saw unit to its rest position
3.4
manual loading
where the operator puts the work piece on the workpiece support i.e. there is no intermediate loading device
to receive and transfer the work piece from the operator to the cutting position
3.5
manual unloading
where the operator removes the work piece from the workpiece support i.e. there is no intermediate unloading
device to transfer the work piece from the cutting position to the operator
3.6
saw unit
supporting unit of the tool(s) e.g. saw blade(s), milling tool, which performs the cutting stroke
3.7
main saw blade
circular saw blade which is used for separating the work piece
3.8
scoring
the making of a shallow cut in the surface of a work piece, deep enough to pass through any veneer or plastic
facing on the workpiece so as to prevent surface damage when the main saw blade makes its cut
3.9
scoring saw blade
saw blade mounted in front of the main saw blade which is designed for scoring
3.10
saw blade/saw unit rest position
position to which the saw unit returns at the end of each cut either power driven on integrated fed machines or
manually on machines with hand feed
3.11
cutting cycle on integrated feed machines
movements of the saw unit incorporating the tool during the machining operation comprising:
 movement of the saw unit with the tool from its rest position to the cutting position;
 movement of the saw unit from its cutting position either along the moving beam (vertical cutting) or
together with the moving beam through the cutting stroke (horizontal cutting);
 returning of the saw unit to its rest position.
A further movement of the saw unit along the moving beam or of the moving beam with saw unit back to their
starting positions may follow
3.12
middle support device
device for supporting a work piece with small dimensions fitted to the work piece support
3.13
angle cutting device
device fitted to the work piece support of the machine (example see Figure 2)

Keys
1 support system
2 lockable device for adjusting the cutting angle
3 scale for indicating the adjusted cutting angle
4 work piece support
5 work piece clamping
6 cutting line
Figure 2 — Example of an angle cutting device
3.14
programmable stop for vertical cuts
device fitted to the work piece support of the machine designed for vertical cuts at predetermined dimensions
3.15
machine actuator
power mechanism used to effect motion on the machine
3.16
run-down time
time elapsed from the actuation of the stop control device up to spindle standstill
3.17
information from the supplier
statements, sales literature, leaflets or other documents where the manufacturer (or supplier) declares either
the characteristics or the compliance of the material or product to a relevant standard
3.18
safety related electrical control system
(SRECS)
electrical part of a control system whose failure can result in a immediate increase of the risk(s)a hazard (3.2.4
of EN 62061:2005)
3.19
safety related part of a control system
(SRP(CS))
part or subpart(s) of a control system that responds to input signals and generates safety-related output
signals
NOTE The combined safety-related parts of a control system start at the point where the safety-related signals are
initiated (including e.g. the actuating cam and the roller of the position switch) and end at the output of the power control
elements (including e.g. the main contacts of the contactor). This also includes monitoring systems (3.1 of
!EN ISO 13849-1:2008").
3.20
embedded software
software that is part of the system supplied by the manufacturer and is not accessible for modification by the
end user
NOTE 1 Embedded software is also referred to as firmware or system software (see 3.2.47 of EN 62061:2005).
NOTE 2 Manufacturer means manufacturer of the system.
NOTE 3 For example the operating system of a speed monitoring device.
3.21
application software
software specific to the application specifically implemented for the SRECS. In general it contains logic
sequences, limits and expressions that control the appropriate outputs, decisions necessary to meet SRECS
functional requirements (see 3.2.46 of EN 62061:2005)
NOTE For example the SRECS program.
4 List of significant hazards
This clause !contains all" significant hazards, hazardous situations and events (see EN 1050:1996) as
far as they are dealt with in this document, identified by risk assessment as significant for the machines as
defined in the scope and which require action to eliminate or reduce the risk. This document deals with these
significant hazards by defining safety requirements and / or measures or by reference to relevant standards.
These hazards are listed in Table 1 in accordance with Annex A of EN 1050:1996.
Table 1 — List of significant hazards
Hazards, hazardous situations and hazardous Relevant
No events EN ISO 12100 clause of this
document
Part 1:2003 Part 2:2003
1 Mechanical hazards related to:
- machine parts or workpieces due to:
4.2 4.2.1, 4.2.2, 5.3.3, 5.3.5,
5 5.3.6, 5.3.7,
a) shape;
5.4.3, 6.2, 6.3,
Annex C
b) relative location; 5.2.2, 5.3.7, 6.2
c) mass and stability (potential energy of elements 5.2.6, 5.3.6
which may move under the effect of gravity);
d) mass and velocity (kinetic energy of elements in 5.3.6
controlled or uncontrolled motion);
e) mechanical strength. 5.3.2, 5.3.6,
5.3.7, Annex B,
Annex D,
Annex E,
Annex F
- accumulation of energy inside the machinery by:
f) elastic elements (springs); 4.2 4.10, 5.5.4 5.4.5
g) gases under pressure. 5.4.6, 5.4.10,
6.3
5.3.6, 5.3.7,
1.1 Crushing hazard 4.2.1
5.3.8
5.3.7, 5.3.8
1.2 Shearing hazard
5.2.6, 5.3.7, 6.1
1.3 Cutting or severing hazard
5.3.7, 5.3.8
1.4 Entanglement hazard
5.3.7, 5.3.8
1.5 Drawing-in or trapping hazard
5.2.6, 5.3.6,
1.6 Impact hazard
5.3.7
5.3.2, 5.3.5, 6.3
1.9 High pressure fluid injection or ejection hazard 4.2.1 4.10
Electrical hazards due to:
5.4.4, 5.4.10
2.1 Contact of persons with live parts (direct contact) 4.3 4.9, 5.5.4
5.4.4, 5.4.10
2.2 Contact of persons with parts which have become 4.3 4.9
live under faulty conditions (indirect contact)
5.4.8
2.4 Electrostatic phenomena 4.3 4.9
Hazards generated by noise, resulting in:
5.4.2
4.1 Hearing loss (deafness), other physiological 4.5 4.2.2, 5
disorders (loss of balance, loss of awareness)
6.3
4.2 Interference with speech communication, acoustic 4.5 4.2.2, 5
signals
(to be continued)
Table 1 — List of significant hazards (concluded)
Hazards generated by materials and substances (and their constituent elements) processed
or used by the machinery
5.4.3, 6.3
7.1 Hazards from contact with or inhalation of harmful 4.8 4.3b, 4.4
fluids and dusts
5.4.1
7.2 Fire 4.8 4.4
Hazards generated by neglecting ergonomic principles in machinery design:
5.2.2, 5.4.5
8.1 Unhealthy postures or excessive effort 4.9 4.7, 4.8.2,
4.11.12,
5.5.5, 5.5.6
5.4.5
8.2 Hand-arm or foot-leg anatomy 4.9 4.8.3
6.3
8.4 Local lighting 4.8.6
6.3
8.5 Mental overload and underload, stress 4.9 4.8.5
5.4.9, 6.3
8.6 Human error, human behaviour 4.9 4.8, 4.11.8,
4.11.10,
5.5.2, 6
5.2.2
8.7 Design, location or identification of manual controls 4.8.7,
4.11.8
5.2.2
8.8 Design or location of visual display units 4.8.8, 6.2
5.2.3, 5.2.5,
9 Combination of hazards 4.11
5.2.6, 5.2.9,
5.3.5, 5.4.10,
5.4.11
Unexpected start-up, unexpected overrun / overspeed (or any similar malfunction) from:
5.2.1, 5.2.9,
10.1 Failure/disorder of the control system 4.11, 5.5.4
5.4.11, 6.1
5.2.8, 5.4.6
10.2 Restoration of energy supply after an interruption 4.11.4
5.4.7, Annex G
10.3 External influences on electrical equipment 4.11.11
5.3.3, 5.3.5
10.4 Other external influences (gravity) 4.12.1
Annex G
10.5 Errors in the software 4.11.7
!5.2.2,
10.6 Errors made by the operator (due to mismatch of 4.9 4.8, 4.11.8,
5.4.5", 6.3
machinery with human characteristics and abilities, 4.11.10,
see 8.6) 5.5.2, 6
5.2.4, 5.2.5,
11 Impossibility of stopping the machine in the
4.11.1,
5.4.10
best possible conditions 4.11.3,
5.5.2
5.2.7
12 Variations in the rotational speed of tools 4.2.2, 4.3
5.2.8
13 Failure of the power supply 4.11.1,
4.11.4
5.2.9
14 Failure of the control circuit 4.11, 5.5.4
5.4.9
15 Errors of fitting 4.9 4.7, 6.5
5.3.2
16 Break-up during operation 4.2.2 4.3
5.3.5
17 Falling or ejected objects or fluids 4.2.2 4.3, 4.10
5.3.1
18 Loss of stability / overturning of machinery 4.2.2 5.2.6

5 Safety requirements and / or measures
5.1 General
The machine shall comply with the safety requirements and / or protective measures of Clause 5.
NOTE 1 In addition, the machine should be designed according to the principles of EN ISO 12100-1:2003 and
EN ISO 12100-2:2003 for hazards relevant but not significant, which are not dealt with by this document (e.g. sharp edges
of the machine frame).
NOTE 2 For guidance in connection with risk reduction by design see Clause 4 of EN ISO 12100-2:2003 and for
safeguarding measures see Clause 5 of EN ISO 12100-2:2003.
5.2 Controls
5.2.1 Safety and reliability of control systems
5.2.1.1 General
For the purpose of this document safety related part of a control system means the system from the initial
device, e.g. push button or position detector or sensor up to and including the power control element of the
final machine actuator or element, 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
categories given below according to !EN ISO 13849-1:2008":
a) for starting and restarting: category 1 or 3 (see 5.2.3, 5.2.6);
b) for prevention of unexpected start up: category 1 or 3 (see 5.2.9);
c) for normal stopping: category 1 or 3 (see 5.2.4);
d) for emergency stop: category 1 or 3 (see 5.2.5);
e) for enabling devices: category 1 (see 5.3.6.4 and 5.3.7.3);
f) for hold-to-run control devices: category 1 or 3 (category B is allowed if the hold-to-run control device is
combined with an enabling device category 1 or 3) (see 5.3.6.4 and 5.3.7.3);
g) for interlocking of guards: category 1 or 3 (see 5.3.7, 5.3.8)
h) for interlocking of functions: category 1 or 3 (see 5.2.3.1, 5.2.6, 5.2.7, 5.3.4, 5.3.7.3);
i) for speed changing and indication of the selected speed: category B (see 5.2.7);
j) for powered movement of the saw blade, saw unit and moving beam: category 1 or 3 (see 5.2.3, 5.2.4,
5.2.5, 5.2.6, 5.3.7);
k) for monitoring the operating maximum speed of the stroke of the saw unit and of the moving beam on
machines with integrated feed: category 1 or 3 (see 5.2.6);
l) for powered movement of the programmable stop: category 1 or 3 (see 5.3.6.4);
m) for braking: category 1 or 2 (see 5.3.4).
NOTE 1 Where more than one category is given further information about the necessary type is specified in the quoted
clauses.
Where category B is required all categories fulfil the requirements and where category 1 is required categories
3 and 4 also fulfil the requirement. Where category 2 is required categories 3 and 4 also fulfil the requirement,
where category 3 is required category 4 also fulfils the requirement.
NOTE 2 6.3 of !EN 13849-1:2008" give useful information on combination of safety-related parts to the same or
different categories.
Verification: By checking the relevant drawings and / or circuit diagrams and inspection of the machine.
5.2.1.2 Use of well tried components
Where for safety related parts of control circuits category 1 according to !EN ISO 13849-1:2008" is
required, at least well tried components shall be used.
Components are considered well tried if they comply with 6.2.4 of !EN ISO 13849-1:2008" (see also
informative Annex A).
NOTE 1 Well tried electrical components are listed in Table D.4 of !EN 13849-2:2008".
NOTE 2 !EN 13849-2:2008" gives useful information on assessment of well-tried components, possible exclusion
of faults etc.
Verification: By checking the relevant drawings and / or circuit diagrams and inspection of the machine.
5.2.1.3 Use of electronic components
If electronic components are used the requirements given in Annex G shall be met.
Verification: By checking the relevant drawings and / or circuit diagrams, inspection of the machine,
measurement and relevant functional testing of the machine.
5.2.2 Position of controls
All electrical hand-operated controls shall be positioned ≥ 600 mm and ≤ 1 800 mm above floor level.
The electrical hand-operated controls of the machine i.e. for starting, normal stopping, cutting stroke / return
stroke (machines with integrated feed), for the programmable stop (if fitted) and for tool spindle speed
changing (if fitted) shall be positioned on the front side of the main control panel fixed at the moving beam.
The hand-operated controls for the power driven saw unit infeed / outfeed movement shall be positioned either on
the saw unit or on the front side of the main control panel fixed at the moving beam.
An emergency stop control device shall be provided on the front side of the main control panel together with the
normal start and stop controls.
For machines with integrated feed additional emergency stop control devices shall be provided at each end of the
machine frame and on any auxiliary control panel.
Verification: By checking the relevant drawings, inspection of the machine, measurement and relevant functional
testing of the machine.
5.2.3 Starting
Before starting or restarting of the machine all interlocked guards shall be in place and functional. This is
achieved by the interlocking arrangements described in 5.3.7.
For electrically operated machines the requirements of 9.2.5.2 of EN 60204-1:2006 apply but the exceptions
referred to and described in 9.2.4 of EN 60204-1:2006 are not relevant.
Start or restart shall only be possible by actuation of the start control device provided for that purpose.
The category of the control circuits (also see 5.2.1) for:
a) starting or restarting the tool spindle;
b) pivoting movement of the saw unit;
c) infeed / outfeed movement of the saw unit on machines with hand feed;
d) starting the cutting cycle or for initiation of the start of the cutting cycle on machines with integrated feed
shall be in accordance with the requirements of !EN ISO 13849-1:2008" and at least:
1) category 1 if the control circuits are hardwired;
2) category 3 if the control circuits inclu
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