EN 1870-5:2002+A1:2009

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Sicherheit von Holzbearbeitungsmaschinen - Kreissägemaschinen - Teil 5: Kombinierte Tischkreissägemaschinen/von unten schneidende KappsägemaschinenSécurité des machines pour le travail du bois - Machines à scier circulaires - Partie 5: Scies circulaires combinées à table et à coupe transversale ascendanteSafety of woodworking machines - Circular sawing machines - Part 5: Circular sawbenches/up-cutting cross-cut sawing machines79.120.10Lesnoobdelovalni strojiWoodworking machines25.080.60Strojne žageSawing machinesICS:Ta slovenski standard je istoveten z:EN 1870-5:2002+A1:2009SIST EN 1870-5:2003+A1:2009en01-november-2009SIST EN 1870-5:2003+A1:2009SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1870-5:2002+A1
September 2009 ICS 79.120.10 Supersedes EN 1870-5:2002English Version
Safety of woodworking machines - Circular sawing machines - Part 5: Circular saw benches/up-cutting cross-cut sawing machines
Sécurité des machines pour le travail du bois - Machines à scier circulaires - Partie 5: Scies circulaires combinées à table et à coupe transversale ascendante
Sicherheit von Holzbearbeitungsmaschinen - Kreissägemaschinen - Teil 5: Kombinierte Tischkreissägemaschinen/von unten schneidende Kappsägemaschinen This European Standard was approved by CEN on 8 November 2001 and includes Amendment 1 approved by CEN on 30 July 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 worldwide for CEN national Members. Ref. No. EN 1870-5:2002+A1:2009: ESIST EN 1870-5:2003+A1:2009

Foreword . 40Introduction . 61Scope . 72Normative references . 73Terms and definitions . 103.1Terms . 103.2Definitions . 104List of significant hazards . 155Safety requirements and/or measures . 185.1Controls . 185.1.1Safety and reliability of control systems . 185.1.2Position of controls . 195.1.3Starting . 195.1.4Normal stopping . 195.1.5Failure of the power supply . 205.1.6Failure of the control circuits . 205.2Protection against mechanical hazards . 205.2.1Stability . 205.2.2Risk of break-up during operation . 205.2.3Tool holder and tool design . 215.2.4Braking . 225.2.5Devices to minimise the possibility or the effect of ejection . 235.2.6Workpiece supports and guides . 305.2.7Prevention of access to moving parts . 345.2.8Safety appliances. 395.3Protection against non-mechanical hazards . 395.3.1Fire and explosion . 395.3.2Noise . 405.3.3Emission of chips, dust and gases . 415.3.4Electricity . 415.3.5Ergonomics and handling . 425.3.6Lighting . 425.3.7Pneumatic . 425.3.8Hydraulic . 425.3.9Heat . 425.3.10Substances . 425.3.11Vibration . 425.3.12Radiation . 435.3.13Laser . 435.3.14Static electricity . 435.3.15Errors of fitting . 435.3.16Isolation . 435.3.17Maintenance . 446Information for use . 446.1Warning devices . 446.2Marking . 446.2.1Marking of the machine . 44SIST EN 1870-5:2003+A1:2009

6.2.2Marking of riving knives . 456.3Instruction handbook . 45Annex A (normative)
Open frame machines stability test . 49Annex B (normative)
Dimensional tolerances of saw spindles . 50Annex C (normative)
Riving knife mounting strength test . 51Annex D (normative)
Riving knife lateral stability test . 52Annex E (normative)
Saw blade guard stability test . 53E.1General . 53E.2Machines with saw blade guards with lead-in . 53E.3Machines with saw blade guards with in-feed rollers . 53Annex F (informative)
Safe working practice . 54Annex ZA (informative)
Clauses of this European Standard addressing essential requirements or other provisions of EU Directives . 56Bibliography . 58 SIST EN 1870-5:2003+A1:2009

!EN ISO 12100-1:2003" for a description of A, B and C standards). According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, 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. SIST EN 1870-5:2003+A1:2009

1 Scope !This document deals with all significant hazards, hazardous situations and events as listed in Clause 4 which are relevant to circular saw benches/up-cutting cross-cut sawing machines, hereinafter 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."
This European Standard does not apply to:  !hand-held motor-operated electric tools or any adaptation permitting their use in a different mode, i.e. bench mounting;"  !NOTE 1 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 60745-1:2006 together with EN 60745-2-5:2007."  !machines set up on a bench or a table similar to a bench, which is intended to carry out work in a stationary position, capable of being lifted by one person by hand.". !NOTE 2 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 European Standard does not cover hazards related to Electro-Magnetic Compatibility (EMC). This European Standard is primarily directed at machines which are manufactured after the date of issue of this European Standard.
!NOTE 3"
Circular saw benches are dealt with in EN 1870-1:1999. 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 614-1:2006, Safety of machinery — Ergonomic design principles — Part 1: Terminology and general principles" !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 displays 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 displays and control actuators — Part 2: Displays EN 894-3:2000, Safety of machinery — Ergonomics requirements for the design of displays and control actuators — Part 3: Control actuators" SIST EN 1870-5:2003+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, Degree 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 60497-4-1:2001", Low voltage switchgear and control gear – Part 4: 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 control gear – Part 5: Control circuit devices and switching elements
Section 1: 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 61310-1:2008, Safety of machinery — Indication, marking and actuation — Part 1: Requirements for visual, acoustic and tactile signals (IEC 61310-1:2007) "
EN ISO 3743-1, Acoustics — Determination of sound power levels of noise sources — 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, !Acoustics — Determination of sound power levels of noise sources using sound pressure SIST EN 1870-5:2003+A1:2009

3.1 Terms The main parts of the machine and their terminology are illustrated in Figure 1.
Key 1 Under table extraction point
2 Controls
3 Elevation arm
4 Fixed guard beneath table
5 Table
6 Rotating part of table
7 Riving knife
8 Saw blade guard
9 Push stick
10 Saw blade guard exhaust outlet
11 Saw guard support
12 Moveable roller table locking clamp
13 Rip- and cross-cut fence
14 Moveable roller table support
15 Moveable roller table
16 Extension table Figure 1 — Terminology 3.2 Definitions 3.2.1 circular saw bench/up-cutting cross-cut sawing machine circular sawing machine with a single saw blade. The saw blade spindle has one fixed rotational speed. The saw unit is situated below the workpiece support (table) and the machine may be used in three modes: SIST EN 1870-5:2003+A1:2009

Figure 2 — Example of a machine in the ripping mode
Figure 3 —Example of a machine in the cross-cutting mode with moved workpiece SIST EN 1870-5:2003+A1:2009

Figure 4 — Example of a machine in the cross-cutting mode with stationary workpiece
3.2.2 infeed table additional table at the infeed of the machine, used as: a) a support for the rip fence and to facilitate feeding the workpiece for ripping during use of the machine as a circular saw bench; b) a sliding table for cross-cutting with the saw blade unit in a fixed position; c) additional fixed position workpiece support during use of the machine as an up-cutting cross-cut sawing machine 3.2.3 operator position that area occupied by the operator for use in the bench sawing mode and for use in both cross-cut sawing modes, as shown in Figure 5 SIST EN 1870-5:2003+A1:2009

Key1 Outfeed table
2 Infeed table
3 Workpiece
4 Operating area for ripping and cross-cutting modes Figure 5 — Operating position 3.2.4 !displaceable machine"
machine which is located on the floor, stationary during use and equipped with a device, normally wheels, which allows it to be moved between locations 3.2.5 machine actuator power mechanism used to effect motion of the machine 3.2.6 hand feed manual holding and/or manual guiding of the workpiece (or of a machine element incorporating a tool). Hand feed includes the use of a hand operated carriage on which the workpiece is placed manually or clamped, and the use of a demountable power feed unit NOTE The words in brackets are not applicable to this machine. 3.2.7 demountable power feed unit feed mechanism which is mounted on the machine so that it can be moved from the working position without the use of a spanner or similar additional device 3.2.8 ejection unexpected movement of the workpiece or parts of it or part of the machine from the machine during processing 3.2.9 kickback particular form of ejection and is describing the unexpected movement of the workpiece or parts of it or parts of the machine opposite to the direction of feed during processing SIST EN 1870-5:2003+A1:2009

a) — Example of push stick
b) — Example of push block
Figure 6 — Examples of a push stick and push block 3.2.12 run-down time time elapsed from the actuation of the stop control up to spindle standstill 3.2.13 !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 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 SIST EN 1870-5:2003+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
b) relative location; 5.1.2, 5.2.5, 5.2.6, 5.2 7
c) mass and stability (potential energy of elements which may move under the effect of gravity) 5.2.6
d) mass and velocity (kinetic energy of elements in controlled or uncontrolled motion); 5.2.6
e) mechanical strength. 5.2.2, 5.2.3, 5.2.5, 5.2.6
- accumulation of energy inside the machinery:
g) liquids and gases under pressure; 4.2 4.10, 5.5.4 5.3.7, 5.3.8 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 5.3.7 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, 5.3.17 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, 5.3.17 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 1870-5:2003+A1:2009

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, 6.3 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 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
5.1.5 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
5.1.6, 5.1.5, 5.3.7 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
5.1.2, 5.1.4 13 Failure of the power supply
4.11.1, 4.11.4 5.1.5 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
5.2.2, 5.2.3, 5.2.5, 5.2.6, 5.2.8 18 Loss of stability / overturning of machinery 4.2.2 5.2.6
5.2.1 " SIST EN 1870-5:2003+A1:2009

5 Safety requirements and/or 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 purposes 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 control systems of this machine (see !EN ISO 13849-1:2008") are those for:  starting (see 5.1.3);  normal stopping (see 5.1.4);  interlocking (see 5.2.7.3, 5.2.7.4);  the braking system (see 5.1.4, 5.2.4).
These control systems shall, as a minimum be designed and constructed using "well tried components and principles". For the purposes of this European Standard "well tried components and principles" means: a) electrical components if they comply with relevant standards including the following as: i) !EN 60947-5-1:2004", section 3 for control switches with positive opening operation used as mechanical actuated position detectors for interlocking guards and for relays used in auxiliary circuits; ii) EN 60947-4-1 for electromechanical contactors and motor-starters used in main circuits; iii) !HD 22.1 S4:2002" for rubber-insulated cables; iv) !HD 21.1 S4:2002" for polyvinyl chloride cable if this cable is additionally protected against mechanical damage by positioning (e.g. inside frames). b) electrical principles if they comply with the first four measures listed in 9.4.2.1 of !EN 60204-1:2006". The circuits shall be either "hardwired", or if electronic components are used in safety related control systems "well tried" is fulfilled if they are in accordance with 9.4.2.2 (i.e. redundancy with cross-monitoring) or 9.4.2.3 (i.e. diversity) of !EN 60204-1:2006"; c) mechanical components if, for example, they operate in the positive mode in accordance with the description given in !4.5 of EN ISO 12100-2:2003"; d) mechanically actuated position detectors for guards if they are actuated in the positive mode and their arrangement/fastening and cam design/mounting comply with the requirements of 5.2 and 5.3 of EN 1088:1995. Time delay devices used in hardwired safety related control circuits can be of category B in accordance with the requirements of !EN ISO 13849-1:2008" if the time delay device is designed for at least one million actuations. SIST EN 1870-5:2003+A1:2009

Key1 Area X Figure 7 —Position of controls Verification: By checking the relevant drawings, measurement and inspection of the machine. 5.1.3 Starting See 9.2.5.2 of !EN 60204-1:2006" and in addition: For the purposes of this European Standard "all of the safeguards in place and functional" is achieved by the interlocking arrangements described in 5.2.7 and "operation" means rotation of the saw spindle.
The exceptions described in 9.2.5.2 of !EN 60204-1:2006" are not relevant. Verification: By checking the relevant drawings and/or circuit diagrams, inspection and relevant functional testing of the machine. 5.1.4 Normal stopping Machines shall be fitted with a stop control which, when actuated shall disconnect power from all the machine actuators and actuate the brake (if provided). If the machine is fitted with a mechanical brake this stop control shall be of a category 0 in accordance with the requirements 9.2.2 of !EN 60204-1:2006". If the machine is fitted with an electrical brake this stop control shall be of category 1 in accordance with the requirements 9.2.2 of !EN 60204-1:2006". When initiated the stopping sequence shall be: SIST EN 1870-5:2003+A1:2009

NOTE The requirements for a stability test for transportable machines with wheels, both when moved from location to location and when in use, will be considered at the first revision of this standard. Verification: By checking the relevant drawings, inspection and relevant functional testing of the machine. 5.2.2 Risk of break-up during operation The guards for the saw blade shall be manufactured from: a) steel having an ultimate tensile strength of at least 350 N mm-2 and a wall thickness of at least 1,5 mm; b) light alloy with characteristics in accordance with Table 2; Table 2 — Light alloy tool guard thickness and tensile strength
Ultimate tensile strength N mm-2 Minimum thickness mm 180
c) polycarbonate with a wall thickness of at least 3 mm or other plastic material with such a wall thickness that the impact strength is equal to or better than that of polycarbonate of 3 mm thickness.
Verification: By checking the relevant drawings, measurement !and" inspection on the machine !deleted text". !NOTE For the ultimate tensile strength a confirmation from the manufacturer of the material can be useful." 5.2.3 Tool holder and tool design 5.2.3.1 General It shall not be possible to mount a saw blade in the machine of a greater diameter than the saw blade for which the machine is designed. Saw spindles shall be manufactured in accordance with the tolerances given in Annex B. Verification: By checking the relevant drawings, inspection, measurement and relevant functional testing of the machine. 5.2.3.2 Spindle locking When it is necessary to hold the spindle stationary for tool changing, a spindle holding device shall be provided. This may be e.g. a double spanner arrangement, or an integral locking bar inserted through the spindle. This bar shall have a minimum diameter of 8 mm and be made from steel with an ultimate tensile strength of at least 350 N mm-2. Locking bars shall prevent the spindle from rotating if the spindle drive motor is inadvertently switched on. Verification: By checking the relevant drawings, inspection measurement !deleted text" and relevant functional testing of the machine. Alternatively on machines with locking bars, by the following test: After starting the spindle drive motor with the locking bar in place the spindle shall remain stationary. !NOTE For the ultimate tensile strength a confirmation from the manufacturer of the material can be useful." 5.2.3.3 Saw blade fixing device Saw flanges (or in the case of flush mounted saw blades - a flange) shall be provided. For saw blades with a diameter ≤ 450 mm the diameter of both flanges (or flange for flush mounting) shall be at least D/4 (where D = the maximum diameter of the saw blade for which the machine is designed). For saw blades with a diameter > 450 mm, the diameter of the flanges (or flange for flush mounting) shall be at least D/6, but not less than 115 mm. For flanges other than those for flush mounted saw blades the clamping surface at the outside part of flange shall be at least 5 mm in width and recessed to the centre (see Figure 8). Where two flanges are provided, both outside diameters shall be within a limit deviation of ± 1 mm. Precautions shall be taken to ensure that the saw blade does not come loose during start-up, running, rundown or braking, e.g. by using a positive connection between the spindle and the saw blade, or by using a positive connection between the front saw flange and the saw spindle. SIST EN 1870-5:2003+A1:2009

Figure 8 — Saw flange detail Verification: By checking the relevant drawings, measurement and inspection of the machine. 5.2.4 Braking 5.2.4.1 General An automatic brake shall be provided for the saw spindle where the unbraked run-down time is more than 10 s. The braked run-down time shall be less than 10 s. Electrical braking shall not be by reverse current. Verification: For the determination of unbraked run-down time and braked run-down time, if relevant, see the appropriate test below. 5.2.4.2 Conditions for all tests a) The spindle unit shall be set in accordance with the manufacturer’s instructions (e.g. belt tension); b) when selecting the speed and the saw blade, conditions shall be chosen which create the greatest kinetic energy for which the machine is designed; c) warm up the spindle unit for at least 15 min by running the machine under no load before beginning the test; d) verify that the actual spindle speed is within 10 % of the intended speed; e) when testing a unit provided with manual star delta starting, the manufacturer’s instructions for starting shall be observed; SIST EN 1870-5:2003+A1:2009
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