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AS 4024.1602-2006

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Safety of machinery Interlocking devices associated with guards - Principles for design and selection
Available format(s)

Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Superseded date

06-30-2017

Language(s)

English

Published date

01-01-2006

Publisher

Standards Australia

Preview

1 - AS 4024.1602-2006 SAFETY OF MACHINERY - INTERLOCKING DEVICES ASSOCIATED WITH GUARDS-PRINCIPLES FOR DESIGN AND SELECTION
4 - PREFACE
5 - CONTENTS
6 - 1 SCOPE
6 - 2 OBJECTIVE
6 - 3 REFERENCED DOCUMENTS
7 - 4 DEFINITIONS
7 - 4.1 Access time; time for access to a danger zone
7 - 4.2 Automatic monitoring
7 - 4.3 Guard locking device
7 - 4.4 Interlocking device; interlock
7 - 4.5 Interlocking guard
7 - 4.6 Interlocking guard with guard locking
8 - 4.7 Positive mode actuation
8 - 4.8 Positive opening operation of a contact element
8 - 4.9 Stopping time; time for hazard elimination
8 - 5 OPERATING PRINCIPLES AND TYPICAL FORMS OF INTERLOCKING DEVICES ASSOCIATED WITH GUARDS
8 - 5.1 Interlocking principles
8 - 5.1.1 Control interlocking
8 - 5.1.2 Power interlocking
9 - 5.2 Typical forms of interlocking devices
9 - 5.2.1 Interlocking device (without guard locking) (see Figure 3(a) and Figure 4)
10 - 5.2.2 Interlocking device with guard locking (see Figure 3(b) and Figure 4)
12 - 5.3 Technological forms of interlocking device
13 - 6 PROVISIONS FOR THE DESIGN OF INTERLOCKING DEVICES (INDEPENDENT OF THE NATURE OF THE ENERGY SOURCE)
13 - 6.1 Actuation modes of mechanically actuated position detectors
14 - 6.2 Arrangement and fastening of position detectors
15 - 6.3 Arrangement and fastening of cams
15 - 6.4 Reducing the possibility of common-cause failures
15 - 6.4.1 General
15 - 6.4.2 Positive and non-positive mode association of mechanically actuated position detectors (see Clause 6.1)
15 - 6.4.3 Power medium diversity
16 - 6.5 Guard locking device (see Clauses 4.3 and 5.2.2)
16 - 6.6 Delay devices
16 - 6.7 Design to minimize defeat possibilities
16 - 6.7.1 General
16 - 6.7.2 Design to minimize defeat of mechanically actuated position detectors
17 - 6.7.3 Design to minimize defeat of proximity switches and magnetic switches
18 - 6.7.4 Design to minimize defeat of plug and socket interlocking devices
18 - 6.8 Environmental considerations
18 - 7 ADDITIONAL TECHNOLOGICAL REQUIREMENTS FOR ELECTRICAL INTERLOCKING DEVICES
18 - 7.1 Compliance with AS 60204.1
18 - 7.2 Interlocking devices incorporating mechanically actuated position switches
18 - 7.2.1 Interlocking devices incorporating one single mechanically actuated position switch
18 - 7.2.2 Interlocking devices incorporating two mechanically actuated position switches
19 - 7.3 Interlocking devices incorporating non-mechanically actuated position switches (proximity switches and magnetic...
19 - 7.3.1 General
19 - 7.3.2 Equivalence with mechanically actuated position switches
19 - 7.3.3 Immunity from disturbance
19 - 7.3.4 Mutual influencing
19 - 7.3.5 Electrical operating conditions
19 - 7.3.6 Specific provisions for magnetic switches
19 - 8 SELECTION OF AN INTERLOCKING DEVICE
19 - 8.1 General
20 - 8.2 Conditions of use and intended use
20 - 8.3 Risk assessment
20 - 8.4 Stopping time and access time
20 - 8.5 Frequency of access (frequency of opening the guard for access to the danger zone)
20 - 8.5.1 Selection of interlocking device
20 - 8.5.2 Interlocking devices with automatic monitoring
21 - 8.6 Performance considerations
22 - APPENDIX A - GUARD-OPERATED INTERLOCKING DEVICE WITH ONE CAM-OPERATED POSITION DETECTOR
22 - A1 PRINCIPLE
23 - A2 ADVANTAGES
23 - A3 DISADVANTAGE
23 - A4 REMARKS
24 - APPENDIX B - GUARD-OPERATED INTERLOCKING DEVICE WITH TONGUE-OPERATED SWITCH
24 - B1 PRINCIPLE
24 - B2 ADVANTAGES
24 - B3 DISADVANTAGE
24 - B4 REMARK
26 - APPENDIX C - PLUG AND SOCKET INTERLOCKING DEVICE (PLUG/SOCKET COMBINATION)
26 - C1 PRINCIPLE
26 - C2 ADVANTAGE
26 - C3 DISADVANTAGES
28 - APPENDIX D - GUARD-OPERATED INTERLOCKING DEVICE INCORPORATING TWO CAM-OPERATED POSITION DETECTORS
28 - D1 PRINCIPLE
28 - D2 ADVANTAGES
28 - D3 REMARK
30 - APPENDIX E - ELECTRICAL INTERLOCKING DEVICE INCORPORATING MAGNETICALLY ACTUATED (MAGNETIC) SWITCHES
30 - E1 PRINCIPLE
30 - E2 ADVANTAGES
30 - E3 DISADVANTAGES
30 - E4 REMARKS
31 - APPENDIX F - ELECTRICAL INTERLOCKING DEVICE INCORPORATING TWO PROXIMITY DETECTORS
31 - F1 PRINCIPLE
31 - F2 ADVANTAGES
31 - F3 DISADVANTAGES
32 - F4 REMARKS
33 - APPENDIX G - PNEUMATIC/HYDRAULIC INTERLOCKING DEVICES
33 - G1 INTRODUCTION
34 - G2 REMARK
35 - APPENDIX H - INTERLOCKING DEVICE WITH GUARD LOCKING, WITH MANUALLY OPERATED DELAY DEVICE
35 - H1 PRINCIPLE
35 - H2 ADVANTAGE
36 - APPENDIX I - DIRECT (MECHANICAL) INTERLOCKING BETWEEN GUARD AND START/STOP MANUAL CONTROL
36 - I1 PRINCIPLE (see Figure I1)
36 - I2 ADVANTAGE
36 - I3 REMARK
38 - APPENDIX J - CAPTIVE-KEY INTERLOCKING DEVICE
38 - J1 DESCRIPTION
38 - J2 PRINCIPLE
38 - J3 ADVANTAGES
39 - J4 REMARKS
40 - APPENDIX K - TRAPPED-KEY INTERLOCKING DEVICE
40 - K1 PRINCIPLE
40 - K2 ADVANTAGES
41 - K3 DISADVANTAGES
41 - K4 REMARK
42 - APPENDIX L - MECHANICAL INTERLOCKING BETWEEN A GUARD AND A MOVABLE ELEMENT
42 - L1 PRINCIPLE
42 - L2 REMARKS
43 - APPENDIX M - INTERLOCKING DEVICE WITH SPRING-APPLIED/POWER-RELEASED GUARD LOCKING DEVICE
43 - M1 VARIANT A: INTERLOCKING FUNCTION ENSURED BY DETECTING SEPARATELY GUARD POSITION AND LOCK POSITION
43 - M2 VARIANT B: INTERLOCKING FUNCTION ENSURED BY DETECTING LOCK POSITION ONLY
44 - M3 REMARK (VALID FOR BOTH VARIANTS)

Specifies principles for the design and selection of interlocking devices associated with guards. The principles are independent of the energy sources used on the machine.

This Standard specifies principles for the design and selection, independent of the nature of the energy source, of interlocking devices associated with guards (as defined in AS 4024.1201).It also provides requirements specifically intended for electrical interlocking devices (see Clause 7).This Standard covers the parts of guards which actuate interlocking devices.Requirements for guards are given in AS 4024.1601. The processing of the signal from the interlocking device to stop and immobilize the machine is dealt with in AS 4024.1501.

Committee
SF-041
DocumentType
Standard
ISBN
0 7337 7468 7
Pages
39
PublisherName
Standards Australia
Status
Superseded
SupersededBy
Supersedes
UnderRevision

Originated as part of AS 4024.1(Int)-1992.Previous edition part of AS 4024.1-1996.Revised in part and redesignated as AS 4024.1602-2006. Originated as part of AS 4024.1(Int)-1992. Previous edition part of AS 4024.1-1996. Revised in part and redesignated as AS 4024.1602-2006.

AS 4024.1201-2006 Safety of machinery - General principles - Basic terminology and methodology
AS 4024.1501-2006 Safety of machinery Design of safety related parts of control systems - General principles for design (Reconfirmed 2014)
AS 60947.5.1-2004 Low-voltage switchgear and controlgear Control circuit devices and switching elements - Electromechanical control circuit devices
AS 4024.1202-2006 Safety of machinery General principles - Technical principles
AS 60204.1-2005 Safety of machinery - Electrical equipment of machines General requirements (IEC 60204-1, Ed. 5 (FDIS) MOD)
AS 4024.1801-2006 Safety of machinery Safety distances to prevent danger zones being reached by the upper limbs
AS 4024.1601-2006 Safety of machinery Design of controls, interlocks and guarding - Guards - General requirements for the design and construction of fixed and movable guards
AS 4024.1301-2006 Safety of machinery Risk assessment - Principles of risk assessment

AS/NZS 4240.2:2009 Remote control systems for mining equipment Operation and maintenance for underground metalliferous mining (Reconfirmed 2021)
AS/NZS 4836:2011 Safe working on or near low-voltage electrical installations and equipment
AS/NZS 4024.1:2006 Series Safety of machinery Safety of machinery series
AS/NZS 4240.3:2013 Remote control systems for mining equipment Operation and maintenance for underground coal mining
AS 4024.1603-2006 Safety of machinery Design of controls, interlocks and guards - Prevention of unexpected start-up (Reconfirmed 2014)
AS 1210-2010 Pressure vessels (Reconfirmed 2021)
AS 4024.1202-2006 Safety of machinery General principles - Technical principles
AS 4024.3002-2009 Safety of machinery Materials forming and shearing - Hydraulic power presses
AS 4024.3001-2009 Safety of machinery Materials forming and shearing - Mechanical power presses
AS 2941-2008 Fixed fire protection installations - Pumpset systems
AS 1418.8-2008 Cranes, hoists and winches Special purpose appliances (Reconfirmed 2018)
AS 4606-2012 Grade S fire resistant and antistatic requirements for conveyor belting and conveyor accessories (Reconfirmed 2024)
AS 4024.1601-2006 Safety of machinery Design of controls, interlocks and guarding - Guards - General requirements for the design and construction of fixed and movable guards
AS 4024.1502-2006 Safety of machinery Design of safety related parts of control systems - Validation (Reconfirmed 2014)
AS 4024.1201-2006 Safety of machinery - General principles - Basic terminology and methodology
AS/NZS 4871.6:2007 Electrical equipment for coal mines, for use underground Diesel powered machinery and ancillary equipment
AS/NZS 1826:2008 Electrical equipment for explosive gas atmospheres - Special protection - Type of protection ‘s’
AS/NZS 3584.3:2012 Diesel engine systems for underground coal mines Maintenance
AS/NZS 3007:2013 Electrical equipment in mines and quarries - Surface installations and associated processing plant
AS 4233.2:2013 High pressure water jetting systems Construction and performance

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Hardcopy - English
PDF 1 User - English
PDF 3 Users - English
PDF 5 Users - English
PDF 9 Users - English
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