EN 1870-3:2001+A1:2009

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Sicherheit von Holzbearbeitungsmaschinen - Kreissägemaschinen - Teil 3: Von oben schneidende Kappsägemaschinen und kombinierte Kapp- und TischkreissägemaschinenSécurité des machines pour le travail du bois - Machines à scier circulaires - Partie 3: Tronçonneuses à coupe descendante et tronçonneuses mixtes à coupe descendante et scies à tableSafety of woodworking machines - Circular sawing machines - Part 3: Down cutting cross-cut saws and dual purpose down cutting cross-cut saws/circular saw benches79.120.10Lesnoobdelovalni strojiWoodworking machines25.080.60Strojne žageSawing machinesICS:Ta slovenski standard je istoveten z:EN 1870-3:2001+A1:2009SIST EN 1870-3:2002+A1:2009en01-maj-2009SIST EN 1870-3:2002+A1:2009SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1870-3:2001+A1
February 2009 ICS 79.120.10 Supersedes EN 1870-3:2001English Version
Safety of woodworking machines - Circular sawing machines - Part 3: Down cutting cross-cut saws and dual purpose down cutting cross-cut saws/circular saw benches
Sécurité des machines pour le travail du bois - Machines à scier circulaires - Partie 3: Tronçonneuses à coupe descendante et tronçonneuses mixtes à coupe descendante et scies à table
Sicherheit von Holzbearbeitungsmaschinen - Kreissägemaschinen - Teil 3: Von oben schneidende Kappsägemaschinen und kombinierte Kapp- und Tischkreissägemaschinen This European Standard was approved by CEN on 29 June 2001 and includes Amendment 1 approved by CEN on 27 December 2008.
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: rue de Stassart, 36
B-1050 Brussels © 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1870-3:2001+A1:2009: ESIST EN 1870-3:2002+A1:2009

Dimensional tolerances of saw spindles . 51Annex B (normative)
Riving knife mounting strength test . 52Annex C (normative)
Riving knife lateral stability test . 53Annex ZA (informative)
!Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC" . 55Annex ZB (informative)
!Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC" . 56Bibliography . 57 SIST EN 1870-3:2002+A1:2009

consists of the following parts: Part 1: Circular saw benches (with and without sliding table), dimension saws and building site saws Part 3: Down cutting cross-cut saws and dual purpose down cutting cross-cut saws/circular saw benches Part 4: Multi-blade 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 SIST EN 1870-3:2002+A1:2009

!EN ISO 12100-1:2003" for a description of type A, type B and type C standards). According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, 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.
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 ISO 12100-1:2003". The extent to which hazards are covered is indicated in the scope of this European Standard. The requirements of this European Standard concern designers, manufacturers, suppliers and importers of down cutting cross-cut saws and dual purpose down cutting cross -cut saws/circular saw benches. This European Standard also includes information to be provided by the manufacturer to the user. Common requirements for tooling are given in !EN 847-1:2005". Electrically driven machines excluded by the scope of this European Standard are covered by the requirements of !EN 61029-1:2000", !EN 61029-2-9" and !EN 61029-2-11". 1 Scope !This document deals with the significant hazards, hazardous situations and events as listed in Clause 4 which are relevant to down cutting cross-cut saws and dual purpose down cutting cross-cut saws/circular saw benches, herein after referred to as „machines“, designed to cut solid wood, chipboard, fibreboard, plywood and also these materials where they are covered with plastic edging and/or plastic/light alloy laminates." !NOTE 1 For the definition of down cutting cross-cut saws and dual purpose down cutting cross -cut saws/circular saw benches see 3.2, 3.3 and 3.4 and for the definition of displaceable machine see 3.8." This !document" does not apply to:  machines for cross cutting logs;  !hand-held motor-operated electric tools or any adaptation permitting their use in a different mode, i.e. bench mounting;" !NOTE 2 Hand-held motor-operated electric tools and saw benches to form an integrated whole with a hand-held motor-operated electric tools are covered by EN 60745-1:2003 together with EN 60745-2-5:2003."  !transportable machines set up on a bench or a table similar to a bench, which are intended to carry out work in a stationary position, capable of being lifted by one person by hand." !NOTE 3 Transportable motor-operated electric tools are covered by the requirements of EN 61029-1:2000 together with EN 61029-2-1:2002." !deleted text" For Computer Numerically Controlled (CNC) machines this !document" does not cover hazards related to Electro-Magnetic Compatibility (EMC). !This document is not applicable to down cutting cross-cut saws and dual purpose down cutting cross-cut saws/circular saw benches which are manufactured before the date of its publication as EN." This European Standard is primarily directed at machines which are manufactured after the date of issue of this European Standard. SIST EN 1870-3:2002+A1:2009

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 60825-1:2007", Safety of laser products — Part 1: Equipment classification, requirements and user's guide !(IEC 60825-1:2007)" !EN 60947-4-1:2001", Low voltage switchgear and controlgear — Part 4: Electromechanical contactors and motor starters — Section 1: Electromechanical contactors and motor starters
!(IEC 60947-4-1:2000)" !EN 60947-5-1:2004", Low-voltage switchgear and controlgear — Part 5-1: Control circuit devices and switching elements — Electromechanical control circuit devices !(IEC 60947-5-1:2003)" !EN 61029-1:2000", Safety of transportable motor operated electric tools — Part 1: General requirements !(IEC 61029-1:1990, modified)" !EN 61029-2-9", Safety of transportable motor operated electric tools — Part 2-9: Particular requirements for mitre saws (IEC 1029-2-9:1995, modified) !EN 61029-2-11", Safety of transportable motor operated electric tools — !Part 2-11: Particular requirements for combined mitre and bench saws (IEC 61029-2-11:2001, modified)" !EN 61310-1:2008, Safety of machinery — Indication, marking and actuation — Part 1: Requirements for visual, auditory and tactile signals (IEC 61310-1:2007)" !CLC/TS 61496-2:2006", Safety of machinery — Electro-sensitive protective equipment -
!Part 2: Particular requirements for equipment using active opto-electronic protective devices (AOPDs) (IEC 61496-2:2006)" EN ISO 3743-1:1995, Acoustics — Determination of sound power levels of noise sources using sound pressure — Engineering methods for small, moveable 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, moveable sources in reverberant fields — Part 2: Method for special reverberation test rooms (ISO 3743-2:1994) EN ISO 3744:1995, Acoustics — Determination of sound power levels of noise sources using sound pressure — Engineering method in an essentially free field over a reflecting plane (ISO 3744: 1994) !EN ISO 3745:2003, Acoustics — Determination of sound power levels of noise sources using sound pressure — Precision methods for anechoic and semi-anechoic 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) SIST EN 1870-3:2002+A1:2009

(ISO 11202:1995) EN ISO 11204:1995, Acoustics — Noise emitted by machinery and equipment — Measurement of emission sound pressure levels at a workstation and at other specified positions — Method requiring environmental corrections (ISO 11204: 1995) EN ISO 11688-1:1998, Acoustics —- Recommended practice for the design of low noise machinery and equipment — Part 1: Planning (ISO/TR 11688-1:1995) !EN ISO 12100-1:2003, Safety of machinery — Basic concepts, general principles for design — Part 1: Basic terminology, methodology (ISO 12100-1:2003) EN ISO 12100-2:2003, Safety of machinery — 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 13850:2006, Safety of machinery — Emergency stop — 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)" !deleted text" ISO 7960:1995, Airborne noise emitted by machine tools — Operating conditions for woodworking machines !HD 21.1 S4:2002, Cables of rated voltages up to and including 450/750 V and having thermoplastic insulation — Part 1: General requirements" !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" !HD 22.4 S4:2004, Cables of rated voltages up to and including 450/750 V and having crosslinked insulation — Part 4: Cords and flexible cables" 3 Terms and definitions In addition to the terms and definitions of !EN ISO 12100-1:2003" for the purposes of this European Standard, the following definitions apply: 3.1 cross-cutting operation of cutting across the grain of a wooden workpiece 3.2 down cutting cross-cut saw machine where the sawblade spindle is situated above the workpiece when the sawblade is in its rest position. The sawblade moves down through the workpiece during the cut. (see Figure 1) SIST EN 1870-3:2002+A1:2009

Figure 1 — Example of a down cutting cross-cut saw 3.3 down cutting and horizontal cutting cross-cut saw machine where the saw unit is fed by hand and the workpiece is manually loaded and/or unloaded. The machine can be used in two modes: a) as a down cutting cross cut saw (see 3.2); b) as a down cutting cross cut saw with an additional horizontal cutting stroke where the saw unit is pulled forward through wide work (see Figure 2)
Key 1 Down cutting stroke
2 Horizontal cutting stroke
3 Operators side Figure 2 — Diagrammatic illustration of a down cutting and horizontal cutting cross-cut saw (guarding not shown) SIST EN 1870-3:2002+A1:2009

Key 1 Table for use when saw unit is lowered into the circular saw bench mode Figure 3 — Example of a dual purpose down cutting cross-cut saw/circular saw bench 3.5 manual cross-cut saw machine where the saw unit is fed by hand and the workpiece is manually positioned for cutting to length. NOTE This type of machine is not covered by annex IV of the Machinery Directive 3.6 semi-automatic cross-cut saw machine where the saw unit has integrated feed which is initiated manually and the workpiece is positioned manually or by means of a positioning mechanism for cutting to length. NOTE This type of machine is covered by annex IV of the Machinery Directive 3.7 automatic cross-cut saw machine where the saw unit has integrated feed, the workpiece is manually loaded and/or unloaded, automatically positioned for cutting to pre-selected lengths and where the integrated feed of the saw unit is initiated automatically. NOTE This type of machine is not covered by annex IV of the Machinery Directive 3.8 !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 SIST EN 1870-3:2002+A1:2009

Key 1 handle
" Figure 4b): Example of push block
Figure 4a): Example of push stick Figure 4 — Example of push stick and push block (for dual purpose down cutting cross-cut saws/circular saw benches in the saw bench mode) 3.18 run-down time time elapsed from the actuation of the stop control device up to spindle standstill 3.19 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 SIST EN 1870-3:2002+A1:2009

No Hazards, hazardous situations and hazardous events EN ISO 12100 Relevant sub-clause of this document
Part 1: 2003 Part 2: 2003
1 Mechanical hazards related to: - machine parts or workpieces:
a) shape; 4.2 4.2.1, 4.2.2, 5 5.2.3, 5.2.5, 5.2.6, 5.2.7, 5.2.8, 5.2.9
b) relative location; 5.1.2, 5.2.5, 5.2.6, 5.2.8
c) mass and stability (potential energy of elements which may move under the effect of gravity) 5.2.7
d) mass and velocity (kinetic energy of elements in controlled or uncontrolled motion); 5.2.7
e) mechanical strength. 5.2.2, 5.2.3, 5.2.5, 5.2.6, 5.2.9
- accumulation of energy inside the machinery:
f) elastic elements (springs), or 4.2 4.10, 5.5.4 5.2.7
g) liquids and gases under pressure; 4.2 4.10, 5.5.4 5.2.7 1.1 Crushing hazard 4.2.1
5.2.7, 5.2.8 1.2 Shearing hazard 5.2.7, 5.2.8 1.3 Cutting or severing hazard 5.2.2, 5.2.3, 5.2.4, 5.2.7 1.4 Entanglement hazard 5.2.7 1.5 Drawing-in or trapping hazard 5.2.7 1.9 High pressure fluid injection or ejection hazard 5.2.2, 5.2.3, 5.2.5, 5.2.6, 5.2.8, 5.3.7 2 Electrical hazards due to: 2.1 Contact of persons with live parts (direct contact) 4.3 4.9, 5.5.4 5.3.4, 5.3.16 2.2 Contact of persons with parts which have become live under faulty conditions (indirect contact) 4.3 4.9 5.3.4, 5.3.16 4 Hazards generated by noise, resulting in: 4.1 Hearing loss (deafness), other physiological disorders (loss of balance, loss of awareness) 4.5 4.2.2, 5 5.3.2 SIST EN 1870-3:2002+A1:2009

No Hazards, hazardous situations and hazardous events EN ISO 12100 Relevantsub-clause of this document
Part 1: 2003 Part 2: 2003
4.2 Interference with speech communication, acoustic signals
5.3.2 6 Hazards generated by radiation 6.5 Lasers 4.7
5.3.13 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 4.8 4.3b, 4.4
5.3.3 7.2 Fire hazard 4.8 4.4
5.3.1, 5.3.3 8 Hazards generated by neglecting ergonomic principles in machinery design related to: 8.1 Unhealthy postures or excessive effort 4.9 4.7, 4.8.2, 4.11.12, 5.5.5, 5.5.6 5.1.2 8.2 Hand-arm or foot-leg anatomy 4.9 4.8.3
5.1.2 8.4 Local lighting
4.8.6 6.3 8.6 Human error, human behaviour
4.8, 4.11.8, 4.11.10, 5.5.2, 6 6.3 d 2) 8.7 Design, location or identification of manual controls
4.8.7, 4.11.8 5.1.2 8.8 Design or location of visual display units
4.8.8, 6.2 5.1.2 9 Combination of hazards 4.11
5.1.7 10 Unexpected start up, unexpected overrun/overspeed (or any similar malfunction) from: 10.1 Failure/disorder of the control system
4.11, 5.5.4
5.1.1 10.2 Restoration of energy supply after an interruption
4.11.4 5.1.8 10.3 External influences on electrical equipment
4.11.11 5.1.1, 5.3.4, 5.3.12 10.6 Errors made by the operator (due to mismatch of machinery with human characteristics and abilities, see 8.6) 4.9 4.8, 4.11.8, 4.11.10, 5.5.2, 6 5.1.1, 5.3.5, 6.3 11 Impossibility of stopping the machine in the best possible conditions
4.11.1, 4.11.3, 5.5.2 5.1.4, 5.1.5 13 Failure of the power supply
4.11.1, 4.11.4 5.2.10 SIST EN 1870-3:2002+A1:2009

No Hazards, hazardous situations and hazardous events EN ISO 12100 Relevant sub-clause of this document
Part 1: 2003 Part 2: 2003
14 Failure of the control circuit
4.11, 5.5.4 5.1.1 15 Errors of fitting 4.9 4.7, 6.5 5.2.3 16 Break-up during operation 4.2.2 4.3 5.2.2 17 Falling or ejected objects or fluids 4.2.2 4.3, 4.10 5.2.5 18 Loss of stability / overturning of machinery 4.2.2 5.2.6 5.2.1
5 Safety requirements and/or protective measures For guidance in connection with risk reduction by design, see !4.1 of EN ISO 12100-2:2003" and in addition: 5.1 Controls 5.1.1 Safety and reliability of control systems For the purpose of this European Standard a safety related control system is one from and including the initial manual control or position detector to the point of input to the final actuator or element e.g. motor. The safety related parts (see !EN ISO 13849-1:2008") of the control systems of this machine are those for:  starting (see 5.1.3);  normal stopping (see 5.1.4);  emergency stopping (see 5.1.5);  interlocking (see 5.1.3, 5.2.7.4, 5.2.7.4.2, 5.2.7.6);  interlocking with guard locking (see 5.2.7.3, 5.2.7.4, 5.2.7.6);  clamping (see 5.2.8);  braking system (see 5.2.4);  two hand control (see 5.2.7.2);  the interlocking of the positioning of the workpiece or of the integrated feed of the saw unit (see 5.1.3);  pressure sensitive mats (see 5.2.7.4);  active opto-electronic protective devices (see 5.2.7.4);  mechanically actuated trip device (trip bar) (see 5.2.7.4). These control systems shall, as a minimum, be designed and constructed using “well tried components and principles”. SIST EN 1870-3:2002+A1:2009

EN 1088:1995; e) interlocking devices with guard locking if they have, as a minimum, unconditional unlocking in accordance with the requirements of Table 1 and Annex N of EN 1088:1995; f) pneumatic components and systems if they comply with the requirements of EN 983:1996; g) two-hand controls if they are as minimum type IIIB in accordance with the requirements of
EN 574:1996; h) pressure sensitive mats if they are as minimum in accordance with type 2 of EN 1760-1:1997 and if they are tested together with their associated control circuits at least at each starting of the machine; i) active opto-electronic protective devices if they comply as minimum with type 2 of
!CLC/TS 61496-2" and if they are tested together with the associated control circuits at least at each starting of the machine; j) trip bars if they are as minimum in accordance with type 2 of EN 1760-2:2000 and if they are tested together with their associated control circuits at least at each starting of the machine. Time delay devices used in hardwired safety related control circuits may be of category B in accordance with !EN ISO 13849-1:2008" if the time delay device is designed for at least one million actuations. Verification: By checking relevant drawings and/or circuit diagrams, inspection of the machine !deleted text". !NOTE For electrical components characteristics the information from the electrical component supplier can be useful." SIST EN 1870-3:2002+A1:2009

EN 60204-1:2006" does not apply. When actuated the emergency stop shall disconnect power from all machine actuators and actuate the brake (if provided). When initiated the stopping sequence shall be: a) initiate the return stroke of the saw unit; b) remove power to workpiece clamping; c) cut power to saw spindle motor and initiate the brake (where fitted); d) when braking sequence is complete, cut power to brake (if electrical brake is fitted). The stopping sequence shall be satisfied at the level of the control circuits. If a time delay device is used, time delay shall be at least the maximum run-down time. Either the time delay shall be fixed, or, the time delay adjustment device shall be sealed. Verification: by checking the relevant drawings and/or circuit diagrams, inspection and relevant functional testing of the machine. 5.1.6 Integrated feed See !5.1.3". SIST EN 1870-3:2002+A1:2009

5 mm. SIST EN 1870-3:2002+A1:2009
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