SIST EN 1870-12:2014

Safety of woodworking machines - Circular sawing machines - Part 12: Pendulum cross-cut sawing machines

This European Standard deals with all significant hazards, hazardous situations and events as listed in Clause 4 which are relevant to pendulum cross-cut sawing, herein after referred to as 'machines', designed to cut solid wood, chipboard, fibreboard, plywood and also these materials when covered with plastic edging and/or plastic/light alloy laminates when they are used as intended and under the conditions foreseen by the manufacturer including reasonably foreseeable misuse.
This European Standard does not apply to:
a)   machines for cross cutting logs;
b)   machines where the saw unit can be rotated about a horizontal axis.
NOTE    The requirements of this European Standard apply to all machines whatever their method of control e.g. electromechanical and/or electronic.
This European Standard is primarily directed at machines which are manufactured after the date of its publication as EN.

Sicherheit von Holzbearbeitungsmaschinen - Kreissägemaschinen - Teil 12: Pendelkreissägemaschinen

Diese Europäische Norm behandelt alle im Abschnitt 4 aufgeführten signifikanten Gefährdungen, Gefährdungssituationen und Ereignisse, die auf Pendelkreissägemaschinen zutreffen — im Folgenden als „Maschinen“ bezeichnet —, die konstruiert sind zum Schneiden von Massivholz, Spanplatten, Faserplatten oder Sperrholz sowie diesen Werkstoffen, wenn sie mit Kunststoffkanten versehen sind und/oder Beschich-tungen aus Kunststoff/Leichtmetall-Legierung haben, wenn sie entsprechend den vom Hersteller vorgesehenen Bedingungen, einschließlich vernünftigerweise vorhersehbarem Fehlverhalten, verwendet werden.
Diese Europäische Norm gilt nicht für:
a) Maschinen zum Querschneiden von Rundholz;
b) Maschinen, bei denen das Sägeaggregat um eine waagrechte Achse gedreht werden kann.
ANMERKUNG Die Anforderungen in dieser Europäischen Norm gelten für alle Maschinen unabhängig von der Art ihrer Steuerung, z. B. elektromechanisch und/oder elektronisch.
Diese Europäische Norm gilt in erster Linie für Maschinen, die nach ihrer Veröffentlichung als EN hergestellt wurden.

Sécurité des machines pour le travail du bois - Machines à scies circulaires - Partie 12: Tronçonneuses pendulaires

La présente Norme européenne traite de tous les phénomènes dangereux, situations et événements dangereux significatifs, tels qu’énumérés à l’Article 4, applicables aux tronçonneuses pendulaires, ci-après désignées « machines », conçues pour la coupe de bois massif, de panneaux de particules, de panneaux de fibres, de contreplaqué ainsi que ces matériaux lorsque leurs surfaces ou leurs chants sont recouverts de matière plastique et/ou de plastique/alliages légers stratifiés, lorsqu’elles sont utilisées normalement et dans les conditions prévues par le fabricant, incluant une mauvaise utilisation raisonnablement prévisible.
La présente Norme européenne ne s’applique pas aux :
a)   machines conçues pour le tronçonnage de grumes ;
b)   machines dont l'unité de sciage peut être tournée autour d'un axe horizontal.
NOTE   Les prescriptions de la présente Norme européenne s'appliquent à toutes les machines, quelle que soit leur méthode de commande, par exemple électromécanique et/ou électronique.
La présente Norme européenne est applicable avant tout aux machines fabriquées après la date de sa publication comme norme EN.

Varnost lesnoobdelovalnih strojev - Krožne žage - 12. del: Nihalne krožne žage za prečni rez

General Information

• Status: Published
• Public Enquiry End Date: 19-Dec-2011
• Publication Date: 28-Jan-2014
• ICS: 25.080.60 - Sawing machines
• ICS: 79.120.10 - Woodworking machines
• Technical Committee: VSN - Safety of machinery
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 13-Jan-2014
• Due Date: 20-Mar-2014
• Completion Date: 29-Jan-2014
• Directive: 2006/42/EC - Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast)
• Mandate: M/396 - Mandate to CEN and Cenelec for standardisation in the field of machinery
• Ref Project: EN 1870-12:2013 - Safety of woodworking machines - Circular sawing machines - Part 12: Pendulum cross-cut sawing machines

Relations

• Replaces: SIST EN 1870-12:2004+A1:2009 - Safety of woodworking machines - Circular sawing machines - Part 12: Pendulum cross-cut sawing machines
• Effective Date: 01-Mar-2014

Overview

EN 1870-12:2013 - published by CEN - is the European safety standard for pendulum cross-cut sawing machines, a type of circular sawing machine used to cut solid wood, chipboard, fibreboard, plywood and those materials covered with plastic edging or laminates. The standard addresses all significant hazards listed in Clause 4 and is intended for machines used as foreseen by the manufacturer, including reasonably foreseeable misuse. It excludes machines for cross‑cutting logs and machines where the saw unit rotates about a horizontal axis. EN 1870-12:2013 is a Type C machine safety standard and supports conformity with the EU Machinery Directive (see informative Annex ZA).

Key Topics

The standard sets out technical requirements and tests covering mechanical and non‑mechanical hazards, including:

• Controls and operation
  • Positioning of controls, start/stop functions, emergency stop, mode selection, and handling of power or control-circuit failures.
• Mechanical protection
  • Stability, saw blade fixing and spindle design, access restrictions for moving parts, safe clamping, measures to prevent ejection of workpieces or fragments, and prevention of saw-unit acceleration or lifting during cutting.
• Braking and testing
  • Requirements for braking performance and normative braking tests (Annex B).
• Guards and impact resistance
  • Guard design and impact test method for guards (normative Annex A).
• Workpiece handling
  • Supports, guides and ergonomic/handling requirements to reduce risk during feeding, positioning and clamping.
• Non-mechanical hazards
  • Fire, noise, emissions of dust and chips, electrical safety, pneumatics, hydraulics, electromagnetic compatibility, static electricity and laser considerations.
• Information and markings
  • Marking, warning devices and the instruction handbook content required for safe use and maintenance.
• Supporting technical annexes
  • Dimensional tolerances for spindles (Annex C) and relationship to Machinery Directive (Annex ZA).

Applications / Who Uses It

• Machine manufacturers and designers of pendulum cross-cut sawing machines applying for CE conformity.
• Safety engineers and compliance officers performing risk assessments and machinery safety documentation.
• Test labs conducting guard impact and braking tests required by the standard.
• Purchasers and maintenance teams in woodworking industries seeking safe selection, operation and servicing practices.

Related Standards

Normative references include standards on control ergonomics and tooling safety, for example:

• EN 574, EN 614-1, EN 847-1, EN 894-1. EN 1870 series parts (Parts 1–19) address other types of circular sawing machines and related safety topics.

Keywords: EN 1870-12:2013, pendulum cross-cut sawing machines, safety of woodworking machines, circular sawing machines, CEN, Machinery Directive, braking, guards, noise, dust, ergonomics.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Sicherheit von Holzbearbeitungsmaschinen - Kreissägemaschinen - Teil 12: PendelkreissägemaschinenSécurité des machines pour le travail du bois - Machines à scies circulaires - Partie 12: Tronçonneuses pendulairesSafety of woodworking machines - Circular sawing machines - Part 12: Pendulum cross-cut sawing machines79.120.10Lesnoobdelovalni strojiWoodworking machines25.080.60Strojne žageSawing machinesICS:Ta slovenski standard je istoveten z:EN 1870-12:2013SIST EN 1870-12:2014en,fr,de01-marec-2014SIST EN 1870-12:2014SLOVENSKI
STANDARDSIST EN 1870-12:2004+A1:20091DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1870-12
October 2013 ICS 79.120.10 Supersedes EN 1870-12:2003+A1:2009English Version
Safety of woodworking machines - Circular sawing machines - Part 12: Pendulum cross-cut sawing machines
Sécurité des machines pour le travail du bois - Machines à scies circulaires - Partie 12: Tronçonneuses pendulaires
Sicherheit von Holzbearbeitungsmaschinen - Kreissägemaschinen - Teil 12: PendelkreissägemaschinenThis European Standard was approved by CEN on 21 September 2013.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1870-12:2013: ESIST EN 1870-12:2014

Impact test method for guards . 39 A.1 General . 39 SIST EN 1870-12:2014

Braking tests . 42 B.1 Conditions for all tests . 42 B.2 Tests . 42 B.2.1 Run-up time . 42 B.2.2 Un-braked run-down time . 42 B.2.3 Braked run-down time . 42 Annex C (normative)
Dimensional tolerances of saw spindles . 43 Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC . 44 Bibliography . 45
Part 19: Circular saw benches (with and without sliding table) and building site saws The following technical modifications have been introduced during the revision:  deletion of automatic machines;  deletion of displaceable machines;  introduction of PL;  more precise requirements for access for saw blade change;  more precise requirements for braking;  addition of provisions to prevent saw unit accelerating or lifting-up during cutting. Organisations contributing to the preparation of this European Standard include 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 12100:2010 for a description of A, B and C standards). According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 1870-12:2014

This document also includes information which can be provided by the manufacturer to the user. Common requirements for tooling are given in EN 847-1:2005+A1:2007. SIST EN 1870-12:2014

The requirements of this European Standard apply to all machines whatever their method of control e.g. electromechanical and/or electronic. This European Standard is primarily directed at machines which are manufactured after the date of its publication as EN. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 574:1996+A1:2008, Safety of machinery — Two-hand control devices — Functional aspects — Principles for design EN 614-1:2006+A1:2009, Safety of machinery — Ergonomic design principles — Part 1: Terminology and general principles EN 847-1:2005+A1:2007, Tools for woodworking — Safety requirements — Part 1: Milling tools, circular saw blades EN 894-1:1997+A1:2008, Safety of machinery — Ergonomics 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+A1:2008, Safety of machinery — Ergonomics requirements for the design of displays and control actuators — Part 2: Displays EN 894-3:2000+A1:2008, Safety of machinery — Ergonomics requirements for the design of displays and control actuators — Part 3: Control actuators EN 1005-1:2001+A1:2008, Safety of machinery — Human physical performance — Part 1: Terms and definitions EN 1005-2:2003+A1:2008, Safety of machinery — Human physical performance — Part 2: Manual handling of machinery and component parts of machinery EN 1005-3:2002+A1:2008, Safety of machinery — Human physical performance — Part 3: Recommended force limits for machinery operation EN 1005-4:2005+A1:2008, Safety of machinery — Human physical performance — Part 4: Evaluation of working postures and movements in relation to machinery SIST EN 1870-12:2014

EN 60529:19912), Degrees of protection provided by enclosures (IP code) (IEC 60529:1989) EN 60825-1:2007, Safety of laser products — Part 1: Equipment classification and requirements (IEC 60825-1:2007)
EN 61310-1:2008, Safety of machinery — Indication, marking and actuation — Part 1: Requirements for visual, acoustic and tactile signals (IEC 61310-1:2007)
CLC/TS 61496-2:2006, Safety of machinery — Electrosensitive protective equipment — Part 2: Particular requirements for equipment using active opto-electronic protective devices (AOPDs) (IEC 61496-2:2006)
EN 61800-5-2:2007, Adjustable speed electrical power drive systems – Part 5-2: Safety requirements – Functional (IEC 61800-5-2:2007) EN ISO 3743-1:2010, Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure — Engineering methods for small, moveable sources in reverberant fields — Part 1: Comparison method for hard-walled test room (ISO 3743-1:2010) EN ISO 3743-2:2009, Acoustics — Determination of sound power levels of noise sources using sound pressure — Engineering methods for small, moveable sources in reverberant fields — Part 2: Methods for special reverberation test rooms (ISO 3743-2:1994) EN ISO 3744:2010, Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure — Engineering methods for an essentially free field over a reflecting plane (ISO 3744:2010) EN ISO 3745:2012, Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure — Precision methods for anechoic and hemi-anechoïc rooms (ISO 3745:2012) EN ISO 3746:2010, Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure — Survey method using an enveloping measurement surface over a reflecting plane (ISO 3746:2010) EN ISO 4413:2010, Hydraulic fluid power — General rules and safety requirements for systems and their components (ISO 4413:2010)
1) EN 60439-1:1999 is impacted by EN 60439-1:1999/A1:2004. 2) EN 60529:1991 is impacted by EN 60529:1991/A1:2000. SIST EN 1870-12:2014

EN ISO 13850:2008, Safety of machinery — Emergency stop — Principles for design (ISO 13850:2006)
EN ISO 13856-1:2013, Safety of machinery — Pressure-sensitive protective devices — Part 1: General principles for design and testing of pressure-sensitive mats and pressure-sensitive floors (ISO 13856-1:2013) EN ISO 13856-2:2013, Safety of machinery — Pressure-sensitive protective devices — Part 2: General principles for design and testing of pressure-sensitive edges and pressure-sensitive bars (ISO 13856-2:2013) 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 machine tools — Operating conditions for woodworking machines HD 22.1 S4:2002, Cables of rated voltages up to and including 450/750 V and having cross-linked insulation — Part 1: General requirements 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN ISO 12100:2010 and the following apply. 3.1 cross-cutting operation of cutting across the grain of a wooden workpiece 3.2 pendulum cross-cut sawing machine machine to carry out cross cuts by moving the saw unit for the cutting stroke across the work piece manually or by integrated feed and after the cut back to its starting (rest) position
Key 1 stroke Figure 1 — Example of a pendulum cross-cut sawing machine 3.3 manual pendulum cross-cut sawing machine machine to carry out cross cuts by moving the saw unit for the cutting stroke manually and where the work piece has to be positioned manually at the fence 3.4 semi-automatic pendulum cross-cut sawing machine machine to carry out cross cuts with integrated feed, by loading and/or unloading the work piece manually and positioning manually the work piece for cutting to length
3.5 stationary machine machine designed to be located on or fixed to the floor or other parts of the structure of the premises and to be stationary during use 3.6
displaceable machine machine which is located on the floor, stationary during use and equipped with a device, normally wheels, which allow it to be moved between locations 3.7 machine actuator power mechanism used to effect motion of the machine 3.8 hand feed on pendulum cross-cut sawing machines manual holding and/or guiding of the workpiece or the manual guiding of the saw unit with the saw blade 3.9 integrated feed feed mechanism for the workpiece or tool which is integrated with the machine and where the workpiece or SIST EN 1870-12:2014

3.13 run-up time time elapsed from the actuation of the start control device until the spindle reaches the intended speed 3.14 un-braked run-down time time elapsed from the actuation of the stop control, but not the braking device (if fitted) up to spindle standstill 3.15 braked run-down time time elapsed from the actuation of the stop control and the brake device up to spindle standstill 3.16 manual loading of power fed machines operation where the workpiece is presented by the operator directly to the machine integrated feed, e.g. rotating feed rollers, travelling table or reciprocating carriage; i.e. for which there is no intermediate loading device to receive and transfer the workpiece from the operator to the integrated feed 3.17 manual unloading of power fed machines operation where the workpiece is removed by the operator directly from the machine outfeed; i.e. for which there is no intermediate unloading device to receive and transfer the workpiece from the machine outfeed to the operator 3.18 information from the supplier statements, sales literature, leaflets or other documents where a manufacturer (supplier) declares either the characteristics of e.g. a material or product or the compliance of the material or product to a relevant standard 3.19 performance level (PL) discrete level used to specify the ability of safety-related parts of control systems to perform a safety function under foreseeable condition
[SOURCE: EN ISO 13849-1:2008, 3.1.23] 4 List of significant hazards This clause contains all significant hazards, hazardous situations and events (see EN ISO 12100:2010), 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. SIST EN 1870-12:2014

N° Hazards, hazardous situations and hazardous events EN ISO 12100:2010
Relevant sub-clause of this document 1 Mechanical hazards related to: - machine parts or workpieces:
a) shape; 6.2.2.1, 6.2.2.2, 6.3 5.3.3, 5.3.6, 5.3.7, 5.3.8
b) relative location; 5.2.2, 5.2.3, 5.2.5, 5.4.5
c) mass and stability (potential energy of
elements which may move under the effect
of gravity); 5.3.1
d) mass and velocity (kinetic energy of
elements in controlled or uncontrolled
motion); 5.3.7.6
e) mechanical strength. 5.3.2
- accumulation of energy inside the machinery:
f) elastic elements (springs);
6.2.10, 6.3.5.4 5.3.7.6 g) liquids and gases under pressure; 6.2.10, 6.3.5.4 5.4.6, 5.4.7 1.1 Crushing hazard
5.3.7, 5.3.8 1.2 Shearing hazard 5.3.7, 5.3.8 1.3 Cutting or severing hazard 5.3.2, 5.3.3, 5.3.4, 5.3.7 1.4 Entanglement hazard 5.3.7 1.5 Drawing-in or trapping hazard 5.3.7 1.6 Impact hazard 5.3.7.4 1.8 Friction or abrasion hazard 5.3.4 1.9 High pressure fluid injection or ejection hazard 5.3.4, 5.4.6, 5.4.7 2 Electrical hazards due to: 2.1 Contact of persons with live parts (direct contact) 6.2.9, 6.3.5.4 5.4.4, 5.4.12, 5.4.13 2.2 Contact of persons with parts which have become live under faulty conditions (indirect contact) 6.2.9 5.4.4, 5.4.12, 5.4.13 SIST EN 1870-12:2014

N° Hazards, hazardous situations and hazardous events EN ISO 12100:2010
Relevant sub-clause of this document 2.4 Electrostatic phenomena 6.2.9 5.4.10 4 Hazards generated by noise, resulting in: 4.1 Hearing loss (deafness), other physiological disorders (loss of balance, loss of awareness) 6.2.2.2, 6.3 5.4.2, 6.3
4.2 Interference with speech communication, acoustic signals. 5.4.2, 6.3
6 Hazards generated by radiation 6.5 Lasers 6.3.4.5 5.4.9 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 and dusts 6.2.3, 6.2.4
5.4.3, 6.4 7.2 Fire hazard 6.2.4
5.4.1, 5.4.3 8 Hazards generated by neglecting ergonomic principles in machinery design related to: 8.1 Unhealthy postures or excessive effort 6.2.7, 6.2.8, 6.2.11.12, 6.3.5.5, 6.3.5.6 5.2.2, 5.4.5, 6.4 8.2 Hand-arm or foot-leg anatomy 6.2.8.3 5.2.2, 5.4.5, 6.4 8.4 Local lighting 6.2.8.6 6.4 8.6 Human error, human behaviour 6.2.8, 6.2.11.8, 6.2.11.10, 6.3.5.2, 6.4 6.4 8.7 Design, location or identification of manual controls 6.2.8.7, 6.2.11.8 5.2.2 8.8 Design or location of visual display units 6.2.8.8, 6.4.2 5.2.2 9 Combination of hazards 6.3.2.1 5.2.6, 5.2.7, 5.2.8, 5.3.7.4, 5.4.3, 5.4.4 10 Unexpected start up, unexpected overrun/overspeed (or any similar malfunction) from: 10.1 Failure/disorder of the control system 6.2.11, 6.3.5.4
5.2.8, 5.2.9, 5.3.3.1 10.2 Restoration of energy supply after an interruption 6.2.11.4
5.2.8, 5.2.9, 5.3.4, 5.4.7, 5.4.8 10.3 External influences on electrical equipment 6.2.11.11 5.4.4, 5.4.8 10.6 Errors made by the operator (due to mismatch of machinery with human characteristics and abilities, see 8.6) 6.2.8, 6.2.11.8, 6.2.11.10, 6.3.5.2, 6.4 5.2.1, 5.4.5, 6.4 11 Impossibility of stopping the machine in the best possible conditions 6.2.11.1, 6.2.11.3, 6.3.5.2
5.2.2, 5.2.4, 5.2.5 13 Failure of the power supply 6.2.11.1, 6.2.11.4 5.2.8, 5.4.7, 5.4.8 SIST EN 1870-12:2014

N° Hazards, hazardous situations and hazardous events EN ISO 12100:2010
Relevant sub-clause of this document 14 Failure of the control circuit 6.2.11, 6.3.5.4
5.3.1 15 Errors of fitting 6.2.7, 6.4.5 5.3.3, 5.4.11, 6.2, 6.4 16 Break-up during operation 6.2.3 5.3.2 17 Falling or ejected objects or fluids 6.2.3, 6.2.10
5.2.6, 5.3.2, 5.3.3, 5.3.5, 5.3.6, 5.3.8, 5.4.7, 5.4.8, 5.4.12 18 Loss of stability / overturning of machinery 6.3.2.6
5.3.1
5 Safety requirements and/or measures 5.1 General The machine shall comply with the safety requirements and/or protective measures of Clause 5. In addition, the machine should be designed in accordance with the requirements of the principles of EN ISO 12100:2010 for hazards relevant but not significant, which are not dealt with by this document (e.g. sharp edges of the machine frame). For guidance in connection with risk reduction by design, see EN ISO 12100:2010, 6.2, and for safeguarding measures, see EN ISO 12100:2010, 6.3. 5.2 Controls 5.2.1 General 5.2.1.1 Safety and reliability of control systems For the purpose of this document, safety related part of a control system means the system from the initial device, e.g. actuator or position detector or sensor up to and including the power control element of the final machine actuator, e.g. motor or brake. Safety related parts of the control system of this machine comprise parts concerning the following functions and they shall fulfil the requirements of at least the PL given below in accordance with the requirements of EN ISO13849-1:2008:  Starting and restarting: PL=c (see 5.2.3);  normal stopping: PL=c (see 5.2.4);  emergency stop: PL=c (see 5.2.5);  moveable interlocked guards: PL=c (see 5.2.3, 5.3.7);  moveable interlocked guards with guard locking: PL=c (see 5.3.7); SIST EN 1870-12:2014

5.2.1.2 Use of protective devices
Protective devices shall be in accordance with the specific standards. For the devices listed below the following requirements apply: a) Time delay devices shall be at least PL=c in accordance with the requirements of EN ISO 13849-1:2008. b) Magnetic/proximity switches shall be in accordance with the requirements of EN 1088:1995+A2:2008, 6.2 and the related control system shall be at least PL = c in accordance with the requirements of EN ISO 13849-1:2008. Verification: By checking the relevant drawings and/or circuit diagrams and inspection of the machine. NOTE For the components characteristics, confirmation from the components' manufacturers can be useful. 5.2.2 Position of controls 5.2.2.1 Manual machines The start and stop control required by 5.2.3 and 5.2.4 of this document shall be situated either: a) incorporated in, or adjacent to the operating handle of the machine; or b) at the front of the machine below the workpiece support and at a minimum height of 600 mm from the floor level and within 1,0 m of the cutting line when it is at 90° to the fence. Verification: By checking the relevant drawings, measurement and inspection of the machine. 5.2.2.2 Semi-automatic machines The controls for starting the saw blade and for normal stopping shall be located together on the machine either: SIST EN 1870-12:2014

1) behind and above the fence, and 2) within 850 mm measured horizontally from the front edge of the workpiece support, and 3) at a maximum height of 1 600 mm from the floor level. The two-hand control device to control the cutting stroke (also see 5.2.3) shall be situated: 1) at the front of the machine within 1,0 m of the cutting line when it is at 90° to the fence (see Figure 2); 2) below the workpiece support; 3) at a minimum height above floor level of 750 mm. Where the control for the clamps is separate from the two-hand control device it shall be within 400 mm measured horizontally to the two hand control device. According to the size of machine the emergency stop(s) shall be positioned: i) within 1,0 m of the loading position; ii) within 1,0 m of the unloading position; iii) at the main control panel; iv) within 500 mm of the two hand control (where provided); v) within 3,0 m of the saw unit. NOTE A single emergency stop can be positioned to fulfil more than one of these requirements. Verification: By checking the relevant drawings, measurement and inspection of the machine. SIST EN 1870-12:2014

Figure 2 — Position of two hand control device on semi-automatic machines 5.2.3 Starting Before starting or restarting the machine all the guards shall be in place and functional. This is achieved by the interlocking arrangements described in 5.3.7. Start or restart shall only be possible by actuation of the start control device provided for that purpose. On semi-automatic machines initiation of the cutting stroke shall only be possible after saw blade rotation and workpiece clamping have been initiated. For semi-automatic machines the cutting stroke shall be controlled by a two-hand control device of type III B in accordance with the requirements of EN 574:1996+A1:2008. When this control is released the saw unit shall return to the rest position within 1,5 s. All reset controls shall be located outside protected areas and not reachable when standing inside a protected area. For electrically started machines, see EN 60204-1:2006, 9.2.5.2. The exceptions described with regard to EN 60204-1:2006, 9.2.5.2 are not relevant. The safety related part of the control systems (also see 5.2.1) for starting and the interlocking arrangements shall be at least PL=c in accordance with the requirements of EN ISO 13849-1:2008. SIST EN 1870-12:2014

5.2.4 Normal stopping 5.2.4.1 General The machine shall be fitted with a stop control system where by all machine actuators can be stopped and the brake (if fitted) activated. The stopping shall include disconnection from energy supply of the corresponding actuators unless STO in accordance with EN 61800-5-2:2007 is used. For normal stopping of PDS(SR) (power drive system, safety related) see EN 61800-5-2:2007, 4.2.2.2 "safe torque off (STO)” and 4.2.2.3 “safe stop 1 (SS1)”. Verification: By checking the relevant drawings and/or circuit diagrams, inspection and relevant functional testing of the machine.
5.2.4.2 Manual machines If the machine is fitted with a spring operated mechanical brake this stop control shall be of a category 0 in accordance with the requirements of EN 60204-1:2006, 9.2.2. If the machine is fitted with any other type of brake e.g. an electrical brake this stop control shall be of category 1 in accordance with the requirements of EN 60204-1:2006, 9.2.2. When initiated the stopping sequence shall be: a) cut power to the saw spindle drive motor and actuate the brake; b) cut power to brake when braking sequence is complete. The stopping sequence shall be satisfied at the level of the control circuits. If a time delay device is used, time delay shall conform to the requirements in 5.2.1.2 a) and be at least the maximum run-down time. Either the time delay shall be fixed, or, the time delay adjustment device shall be sealed. The safety related part of the control systems (also see 5.2.1) for normal stopping shall be at least PL=c in accordance with the requirements of EN ISO 13849-1:2008. Verification: By checking relevant drawings and/or circuit diagrams, inspection and relevant functional testing of the machine. 5.2.4.3 Semi-automatic machines The stopping sequence for the stop control required in 5.2.4.1 shall: a) cut power to the saw blade drive, initiate the brake and start the return stroke of the saw unit; b) cut power to the brake actuator (if electrical) after the saw blade has come to rest. NOTE After the saw unit has reached its rest position the power to the work piece clamping can be removed automatically. The stopping sequence shall be satisfied at the level of the control systems. If a time delay device is used, time delay shall conform to the requirements in 5.2.1.2 a) and be at least the maximum run-down time. Either the time delay shall be fixed, or the time delay adjustment device shall be sealed. SIST EN 1870-12:2014
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