EN 1870-7:2002+A1:2009

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.HPRPSicherheit von Holzbearbeitungsmaschinen - Kreissägemaschinen - Teil 7: Einblatt-Stammkreissägemaschinen mit mechanischem Tischvorschub und Handbeschickung und/oder HandentnahmeSécurité des machines pour le travail du bois - Machines à scier circulaires - Partie 7: Scies circulaires monolames à grumes à avance intégrée à table et à chargement manuel et/ou déchargement manuelSafety of woodworking machines - Circular sawing machines - Part 7: Single blade log sawing machines with integrated feed table and manual loading and/or unloading79.120.10Lesnoobdelovalni strojiWoodworking machines25.080.60Strojne žageSawing machinesICS:Ta slovenski standard je istoveten z:EN 1870-7:2002+A1:2009SIST EN 1870-7:2002+A1:2009en01-november-2009SIST EN 1870-7:2002+A1:2009SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1870-7:2002+A1
September 2009 ICS 79.120.10 Supersedes EN 1870-7:2002English Version
Safety of woodworking machines - Circular sawing machines - Part 7: Single blade log sawing machines with integrated feed table and manual loading and/or unloading
Sécurité des machines pour le travail du bois - Machines à scier circulaires - Partie 7: Scies circulaires monolames à grumes à avance intégrée à table et à chargement manuel et/ou déchargement manuel
Sicherheit von Holzbearbeitungsmaschinen - Kreissägemaschinen - Teil 7: Einblatt-Stammkreissägemaschinen mit mechanischem Tischvorschub und Handbeschickung und/oder Handentnahme This European Standard was approved by CEN on 5 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 1870-7:2002+A1:2009: ESIST EN 1870-7:2002+A1:2009

2 Contents page Foreword . 31 Scope . 52 Normative references . 53 Terms and definitions . 73.1 Terms . 73.2 Definitions . 84
!!!!List of significant hazards"""" . 155 Safety requirements and/or measures . 175.1 Controls . 185.2 Protection against mechanical hazards . 215.3 Protection against non-mechanical hazards . 356 Information for use . 406.1 Warning devices . 406.2 Marking . 406.3 Instruction handbook . 41Annex A (normative)
Saw spindle dimensional tolerances . 45Annex B (normative)
Riving knife mounting Strength test . 46Annex C (normative)
Riving knife lateral stability test . 47Annex D (normative)
Operating conditions for noise emission measurement . 48D.1 Operating conditions . 48D.2 General data sheet . 50Annex ZA (informative)
!!!!Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC"""" . 53Annex ZB (informative)
!!!!Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC"""" . 54Bibliography . 55 SIST EN 1870-7:2002+A1:2009

Foreword This document (EN 1870-7:2002+A1:2009) has been prepared by Technical Committee CEN /TC 142, "Woodworking machines - Safety", the secretariat of which is held by UNI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by March 2010, and conflicting national standards shall be withdrawn at the latest by March 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 2009-07-30. This document supersedes EN 1870-7:2002. The start and finish of text introduced or altered by amendment is indicated in the text by tags ! ". !This European Standard 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 Directive. 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 European Committee of Woodworking Machinery Manufacturers Association "EUMABOIS". Annexes A, B, C and D are normative, the !Annexes ZA and ZB" are informative. !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 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) SIST EN 1870-7:2002+A1:2009

4 Part 12: Pendulum cross-cut sawing machines Part 13: Horizontal beam panel sawing machines Part 14: Vertical panel sawing machines Part 15: Multi-blade 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)" The European Standards produced by CEN/TC142 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). 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 1870-7:2002+A1:2009

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 single blade circular log saw machines with integrated feed and manual loading and/or unloading. 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.
1 Scope !This document deals with all significant hazards, hazardous situations and events as listed in Clause 4 which are relevant to single blade circular log sawing machines with integrated feed table with manual loading and/or unloading, (hereinafter referred to as machines), designed to cut solid wood." This European Standard does for Computer Numerically Controlled (CNC) machines not cover the hazards related to Electro-Magnetic Compatibility (EMC). !deleted text" This European Standard is primarily directed at machines that are manufactured after the date of issue of this European Standard. 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, Tools for woodworking — Safety requirements — Part 1: Milling tools, circular sawblades !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" !deleted text" EN 982, Safety of machinery — Safety requirements for fluid power systems and their components — Hydraulics SIST EN 1870-7:2002+A1:2009

6 EN 983, 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 machinery and component parts of 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 and movements in relation to machinery EN 1037:1995, Safety of machinery — Prevention of unexpected start-up" !deleted text" EN 1088:1995, Safety of machinery — Interlocking devices associated with guards — Principles for design and selection !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 60825-1:2007, Safety of laser products — Part 1: Equipment classification and requirements (IEC 60825-1:2007)" EN 60947-4-1, !Low-voltage switchgear and controlgear — Part 4-1: Contactors and motor-starters — Electromechanical contactors and motor-starters (IEC 60947-4-1:2000)" !EN 60947-5-1:2004, Low voltage switchgear and control gear – Part 5-1: Control circuit devices and switching elements – Electromechanical control circuit devices (IEC 60947-5-1:2003)" !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, movable 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 — Engineering methods for small, movable sources in reverberant fields — Part 2: Methods for special reverberation test rooms (ISO 3743-2:1994) " EN ISO 3744, 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) SIST EN 1870-7:2002+A1:2009

!EN ISO 3745, Acoustics — Determination of sound power levels of noise sources using sound pressure — Precision methods for anechoic and hemi-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 9614-1, Acoustics — Determination of sound power levels of noise sources using sound intensity — Part 1: Measurement at discrete points (ISO 9614-1:1993) EN ISO 11202:1995, !Acoustics — Noise emitted by machinery and equipment — Measurement of emission sound pressure levels at a work station and at other specified positions — Survey method in situ (ISO 11202:1995) " EN ISO 11204:1995, Acoustics — Noise emitted by machinery and equipment — 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, 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) " !deleted text" ISO 7960:1995, Airborne noise emitted by machine tools — Operating conditions for woodworking machines !HD 21.1 S4, 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 For the purposes of this European Standard, the terms and definitions given in !EN ISO 12100-1:2003" and the following apply: 3.1 Terms The main parts of the machine and their terminology are illustrated in Figure 1. SIST EN 1870-7:2002+A1:2009

Key1 Dropping device
2 Riving knife
3 Holding-down device
4 Fence
5 Feed table
6 Feed rollers
7 Controls
8 Log hook Figure 1 — Terminology 3.2 Definitions 3.2.1 single blade circular log sawing machine with integrated feed table and manual loading and/or unloading a machine designed for the ripping of solid wood e.g. logs, having the following characteristics: a) integrated feed table; b) sawblade diameter ≥ 600 mm; c) the sawblade is mounted on a horizontal spindle below the table; d) the sawblade spindle is in a fixed position. 3.2.2 stationary machine a 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 3.2.3 !!!!displaceable machine"""" a 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 3.2.4 machine actuator a power mechanism used to effect motion of the machine 3.2.5 integrated feed a feed mechanism for the workpiece (or tool) which is integrated with the machine and where the workpiece (or machine element with incorporated tool) is (are) held and controlled mechanically during the machining operation NOTE The words in brackets are not applicable to the machines covered by this European Standard SIST EN 1870-7:2002+A1:2009

3.2.6 anti kickback device a device which either reduces the possibility of kickback or arrests the motion during kickback of the workpiece or parts of it or parts of the machine 3.2.7 ejection the unexpected movement of the workpiece or parts of it or part of
the machine from the machine during processing 3.2.8 kickback a 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
3.2.9 run-up time the time elapsed from the actuation of the start control device until the spindle reaches the intended speed 3.2.10 run-down time the time elapsed from the actuation of the stop control device up to spindle standstill 3.2.11 dropping device device designed to remove the sawn workpiece from the integrated feed table (see Figure 2) SIST EN 1870-7:2002+A1:2009

Figure 2 — Example of dropping device (guards not shown) 3.2.12 log lifter equipment, integral with the machine and which lifts the log from the ground onto the integrated feed table (see Figure 3) SIST EN 1870-7:2002+A1:2009

Figure 3 — Example of log lifter 3.2.13 log positioner device for horizontal (adjusting) and rotational positioning of the log prior to sawing (see Figure 4).
Key 1 Log adjuster
2 Log rotator Figure 4 — Example of log adjuster and rotator 3.2.14 log delivery device device for loading the log onto the integrated feed table (see Figure 5). SIST EN 1870-7:2002+A1:2009

Figure 5 — Example of log delivery device SIST EN 1870-7:2002+A1:2009

3.2.15 log clamp device for holding the log at the butt end in position on the integrated feed table during sawing (see Figure 6).
Figure 6 — Example of log clamp 3.2.16 log hook device to hold the long axis of the log stable during feeding (see Figure 7). SIST EN 1870-7:2002+A1:2009

Figure 7 — Example of log hook
3.2.17 sawblade guide a device to secure the straightness and vibration free functioning of the sawblade (see Figure 8).
Key1 Riving knife
2 Sawblade guide Figure 8 — Example of sawblade guide 3.2.18 holding down device an adjustable device situated over the sawblade to minimise the risk of uplifted cut-offs from contacting the uppermost teeth of the sawblade (see Figure 9). SIST EN 1870-7:2002+A1:2009

Key 1 Holding down device
2 Riving knife Figure 9 — Example of holding down device over the sawblade 3.2.19 !!!!information from the supplier"""" statements, sales literature, leaflets or other, whereby 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. 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. SIST EN 1870-7:2002+A1:2009

16 Table 1 — List of significant hazards
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 5.2.2, 5.2.3, 5.2.5, 5.2.6, 5.2.7, 5.2.8
b) relative location; 5.2.2, 5.2.3, 5.2.5
c) mass and stability (potential energy of elements which may move under the effect of gravity) 5.1.2, 5.2.8
d) mass and velocity (kinetic energy of elements in controlled or uncontrolled motion); 5.1.3, 5.2.1, 5.2.5
e) mechanical strength. 5.2.3, 5.2.5
- 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 5.2.3, 5.2.6, 5.2.7 1.5 Drawing-in or trapping hazard 5.2.7 1.6 Impact hazard 5.2.7, 5.2.8 1.9 High pressure fluid injection or ejection hazard 5.3.7, 5.3.8 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 2.4 Electrostatic phenomena 4.3 4.9 5.3.14 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 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 SIST EN 1870-7:2002+A1:2009

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, 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 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, 5.1.7, 5.1.8 10.2 Restoration of energy supply after an interruption
4.11.4
5.1.7 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, 5.1.2, 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 5.1.7 14 Failure of the control circuit
4.11, 5.5.4
5.1.1 15 Errors of fitting 4.9
4.7, 6.5
6.3 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, 5.2.7, 5.2.8 18 Loss of stability / overturning of machinery 4.2.2 5.2.6
5.2.1 " 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: SIST EN 1870-7:2002+A1:2009

18 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") 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 5.2.7.1, 5.2.7.2, 5.2.7.4, 5.2.7.5);  the braking system (see 5.1.4, 5.1.5);  limited movement control device (see 5.2.7.3);  hold to run control (see 5.1.6);  power operated movement of the fence (see 5.1.3).
These control systems shall as a minimum, be designed and constructed in accordance with category 1 as defined in !EN ISO 13849-1" unless otherwise stated in this European Standard. 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: i) 3 of !EN 60947-5-1:2004" for control switches with positive opening operation used as mechanically actuated position detectors for interlocking of 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" for rubber insulated cables; iv) !HD 21.1 S4" for polyvinyl chloride cables if these cables are additionally protected against mechanical damage by positioning (e.g. inside frames);
b) electrical principles if they comply with the first four measures listed in clause 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 they shall be 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 positive mode and their arrangement/fastening and the cam design/mounting comply with 5.2 and 5.3 of EN 1088:1995; e) interlocking devices with guard locking if they are at least of the manually operated delay device type in accordance with annex N of EN 1088:1995; f) pneumatic and hydraulic components and systems if they comply with EN 983 and EN 982 respectively. SIST EN 1870-7:2002+A1:2009

As an exception, time delay devices used in hardwired control circuits which are designed for at least one million actuations or the components consisting of the initial manual control of the hold-to-run control may be of category B in accordance with the requirements of !EN ISO 13849-1". Verification: by checking the relevant drawings and/or circuit diagrams and inspection of the machine. !deleted text". !NOTE For components characteristics the information from the component supplier can be useful." 5.1.2 Position of controls An emergency stop and the controls for workpiece loading, handling, feeding and unloading etc. shall be within 850 mm of the operator position (see area marked X in Figure 10), as defined by the manufacturer, and at a height not exceeding 1 800 mm from the operator standing level. The start and normal stop controls may be at the position defined above, but in any case in a position from which the dangerous area is visible. The additional emergency stop required by 5.1.5 shall be positioned at the unloading side of the machine and as defined by area Y in Figure 10. Verification: by checking the relevant drawings, measurement and inspection of the machine. Dimensions in millimetres
Key 1 Area Y
2 Area X
R = 850 mm for both hands Figure 10 — Position of controls SIST EN 1870-7:2002+A1:2009

20 5.1.3 Starting See 9.2.5.2 of !EN 60204-1:2006" and in addition: For the purpose of this European Standard "safeguards are in place and functional" is achieved by the interlocking arrangements described in 5.2.7 and "operation" means rotation of any saw spindle and/or any powered movement of any workpiece holding device and/or any machine element and/or any feed mechanism. The exceptions described in 9.2.5.2 of !EN 60204-1:2006" are not relevant.
Power re-positioning of the fence shall not be possible during operation of the cutting stroke of the workpiece feed mechanism. Verification: by checking the relevant drawings and/or circuit diagrams, inspection and relevant functional testing of the machine. 5.1.4 Normal stopping A stop control shall be fitted which when actuated cuts power to all machine actuators and actuate the brake (if provided). Where a mechanical brake is provided this stop control shall be of category 0 in accordance with 9.2.2 of !EN 60204-1:2006". Where an electrical brake is provided this stop control shall be a category 1 stop in accordance with 9.2.2 of !EN 60204-1:2006" and the stopping sequence shall be:
a) cut power to all machine actuators and actuate the brake; b) cut power to brake after 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 be at least the maximum run-down time and either time delay shall be fixed or the time delay adjustment shall be sealed. Verification: by checking relevant drawings and/or circuit diagrams, inspection and relevant functional testing of the machine.
5.1.5 Emergency stop See !EN ISO 13850:2008" and in addition: Machines shall be fitted with emergency stops which shall conform to 9.2.5.4 and 10.7 of
!EN 60204-1:2006". Actuating the emergency stop shall stop all machine actuators.
On Power Take Off (PTO) driven machines it shall not be possible to operate the machine unless the emergency stop is functional e.g. by mechanical or electrical interlocking between the power source and movements of the machine. Where a mechanical brake is provided this stop control shall be of category 0 in accordance with 9.2.2 of !EN 60204-1:2006". Where an electrical brake is provided this stop control shall be a category 1 stop in accordance with 9.2.2 of !EN 60204-1:2006" and the stopping sequence shall be:
a) cut power to all machine actuators and actuate the brake; SIST EN 1870-7:2002+A1:2009

b) cut power to brake after 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 be at least the maximum run-down time and either time delay shall be fixed or the time delay adjustment shall be sealed. Verification: by checking relevant drawings and/or circuit diagrams, inspection and relevant functional testing of the machine.
5.1.6 Integrated feed The movement of the integrated feed table and infeed roller shall be controlled by one hand operated hold-to-run control device. The initiation of this hold-to-run control device shall only be possible after the manual release of e.g. a latch. This hold-to-run control device shall be a lever. The direction of the control movement of this lever shall be opposite to the direction of movement of the integrated feed table. NOTE This is to prevent overhanging branches or a log which is not properly loaded from striking and holding the control device in the feed position, which would create hazards to the operator and others. The control of the log delivery device, log adjuster and rotator, log lifter and log clamp and any additional devices associated with handling of the workpiece or parts of it, shall be hand operated hold-to-run control devices. Verification: by checking the relevant drawings and/or circuit diagrams, inspection and relevant functional testing of the machine. 5.1.7 Failure of the power supply On electrically driven machines an automatic restart in the case of supply interruption after the restoration of the supply voltage shall be prevented in accordance with 7.5 paragraphs 1 and 3 of !EN 60204-1:2006". Verification: by checking relevant drawings and/or circuit diagrams, inspection and relevant functional testing of the machine.
5.1.8 Failure of control circuits See 5.1.1. 5.2 Protection against mechanical hazards 5.2.1 Stability Stationary machines and ancillary equipment shall be equipped with the facility to fix them to the floor or other stable structure, e.g. by providing fixing holes in the machine or equipment frame. !Displaceable machines" shall be provided with a minimum of four stabilisers e.g. feet, stands or outriggers to ensure that the machine remains stable whilst in the working position. These devices shall have a bearing surface that transmits to the ground a pressure of maximum 400 kPa. The stabilisers shall be locked in the transport position by two separate locking devices for each stabiliser, at least one of which operates automatically e.g. a gravity locking pin plus a detente. Hydraulically operated stabilisers are regarded to meet this requirement. Where the stabilisers are power operated and project beyond the outline of the machine, it shall be possible for the driver/operator to verify that they are in the transport position e.g. by direct sight, mirrors or Closed Circuit TeleVision (CCTV). SIST EN 1870-7:2002+A1:2009

22 !NOTE The requirements for a stability test for displaceable machines with wheels will be considered at the first revision of this standard." Verification: by checking the relevant drawings, measurement, inspection and relevant functional testing of the machine. 5.2.2 Risk of break-up during operation The guards for the sawblade shall be manufactured from materials with at least the following properties: a) steel having an ultimate tensile strength of at least 350 N mm-2 and a wall thickness of at least 2 mm; b) light alloy with characteristics in accordance with table 2; Table 2 — Light alloy sawblade guard thickness and tensile strength Ultimate tensile strength N mm-2 Minimum thickness mm 180 5 240 4 300 3 c) polycarbonate with a wall thickness of at least !5 mm" or other plastic material with such a wall thickness that the impact strength is equal to or better than that of polycarbonate of !5 mm" thickness; d) cast iron with an ultimate tensile strength of at least 200 N mm-2 and a wall thickness of at least 5 mm. 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 See EN 847-1 and in addition: 5.2.3.1 Sawblade fixing device Saw flanges (or in the case of a flush mounted sawblade - a flange) shall be provided. The outside diameter of the flanges shall be ≥ D/8 (where D = the largest sawblade diameter for which the machine is designed). For flanges other than those for flush mounted sawblades the clamping surface at the outside of the flange shall be at least 5 % of the flange outside diameter but not less than 5 mm in width and recessed to the centre.
Where two flanges are provided, both outside diameters shall be within a tolerance of ± 1 mm. To ensure that the sawblade does not come loose during start-up, running or braking, there shall be a positive connection between the spindle and the sawblade, or between the front saw flange and the spindle.
Run-out of the saw spindle and camming of the saw flanges shall be within the tolerances given in Annex A. Verification: by checking the relevant drawings, measurement, inspection and relevant functional testing of the machine.
5.2.3.2 Sawblade guiding At the sawblade, the machine shall be fitted with sawblade guiding devices on the infeed and outfeed side of the sawblade (see Figure 8). These devices shall be provided with radial and axial adjustment. The radial adjustment shall accommodate the maximum and minimum diameters of the sawblade for which the machine is designed. The axial adjustment shall permit the guide to be adjusted to between a minimum of 1 mm and a maximum of 4 mm from the sawblade plate. Adjustment of the axial movement of the guides located at the infeed of the sawblade shall be possible during sawblade running. This adjustment shall be from a position of safety i.e. outside of the machine guards. The guides shall be manufactured from a material that will not create a hazard if in contact with the rotating sawblade; e.g. plastic or a wood based material. Verification: by checking the relevant drawings, measurement, inspection and relevant functional testing of the machine.
5.2.4 Braking 5.2.4.1 General An automatic brake shall be provided for the sawblade spindle on electrically driven machines where the unbraked run-down time is more than 10 s. The braking time shall be less than 10 s or, where the run-up time exceeds 10 s, less than the run-up time but shall in no case exceed 30 s. For electrical braking, reverse current injection braking shall not be used. Verification: for determination of the run-up time, 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 sawblade, 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; f) the speed measuring equipment shall have an accuracy of at least ± 1% of full scale; g) the time measuring equipment shall have an accuracy of at least ± 0,1 s. SIST EN 1870-7:2002+A1:2009

24 5.2.4.3 Tests 5.2.4.3.1 Run-up time The run-up time shall be measured as follows: a) cut power to the saw spindle drive motor and allow the spindle to come to a complete stop; b) re-start the saw spindle drive motor and measure the run-up time; c) repeat steps a) and b) twice more. The run-up time of the saw spindle is the average of three measurements taken. 5.2.4.3.2 Unbraked run-down time The unbraked run-down time shall be measured as follows: a) start the saw spindle drive motor and run at the intended speed (no load) for 1 min; b) cut power to the saw spindle drive motor and measure the unbraked run-down time; c) repeat steps a) and b) twice more. The unbraked run-down time of the saw spindle is the average of three measurements taken. 5.2.4.3.3 Braked run-down time The braked run-down time shall be measured as follows: a) start the saw spindle drive motor and run at the intended speed (no load) for 1 min; b) cut power to the saw spindle drive motor and measure the braked run-down time; c) allow the saw spindle to remain stationary for
(5.7P)2 min (where P is the motor power (rated input) in kW). The re-start interval shall not be less than 1 min; d) repeat steps !a) to c)" nine times. The braked run-down time of the saw spindle is the average of ten measurements taken. 5.2.5 Devices to minimise the possibility or the effect of ejection 5.2.5.1 Riving knife Every machine shall be supplied with a riving knife / riving knives to accommodate the range of sawblades that are intended for use with the machine as indicated in the instruction handbook.
Verification: by checking relevant drawings and inspection of the machine. The riving knife and its mounting arrangement shall meet the following requirements: a) riving knives shall be manufactured from steel with an ultimate tensile strength of at least 580 N mm-2, or of a comparable material, have flat sides (within 0,2 mm in 100 mm) and shall have a thickness between the width of the sawblade plate and the kerf (width of saw teeth) (see Figure 11).
Verification: by checking the relevant drawings !and" measurement !deleted text". !NOTE For the ultimate tensile strength a confirmation from the manufacturer of the material can be useful."
Figure 11 — Thickness of riving knife in relation to sawblade dimensions b) the leading edge of the riving knife shall be chamfered to provide a "lead-in" (see Figure 12) and the riving knife shall be of constant thickness (within ± 0,2 mm) throughout its working length. Verification: by checking the relevant drawings, inspection and measurement.
Figure 12 — Chamfered leading edge of riving knife c) the riving knife shall be capable of vertical adjustment so that its uppermost point can be set level with the highest point on the periphery of the maximum sawblade for which the machine is designed or a maximum of 50 mm below the highest point on the periphery of the maximum sawblade for which the machine is designed (see Figure 13). Verification: by checking relevant drawings, inspection and measurement. SIST EN 1870-7:2002+A1:2009

Key A Maximum cutting height
B 1/3 maximum cutting height
Figure 13 — Riving knife and holding-down device adjustment d) the riving knife shall be designed so that when it is mounted and adjusted the distance between the riving knife and the sawblade measured at 1/3 of the maximum cutting height shall not exceed 10 mm measured radially through the centre of the sawblade and at no place shall this distance exceed 20 mm (see Figure 13). Verification: by checking relevant drawings, inspection and measurement. e) the front and rear contours of the riving knife shall be continuous curves or straight lines, without any flexure which would weaken it (for example see Figure 14) with the exception of the provision described at j). Verification: by checking relevant drawings and inspection. SIST EN 1870-7:2002+A1:2009

EN 1870-
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