AS/NZS 4024.1602:2014
Safety of machinery - Part 1602: Interlocking devices associated with guards - Principles for design and selection
Specifies the principles for the design and selection, independent of the energy source, of interlocking devices associated with guards. It provides measures to minimize defeat of interlocking devices in a reasonably foreseeable manner and it covers the parts of guards which actuate interlocking devices. It does not necessarily provide all the specific requirements for trapped key systems. Identical to and reproduced from ISO 14119:2013.
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AS/NZS 4024.1602:2014
Preface
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Operating principles and typical forms of interlocking devices associated with guards
4.1 General
4.2 Principles of guard interlocking without guard locking
4.3 Principles of guard interlocking with guard locking
5 Requirements for the design and the installation of interlocking devices with and without guard locking
5.1 General
5.2 Arrangement and fastening of position switches
5.3 Arrangement and fastening of actuators
5.4 Actuation modes of interlocking devices
5.5 Interface to control systems
5.6 Mechanical stop
5.7 Additional requirements on guard locking devices
6 Selection of an interlocking device
6.1 General
6.2 Selection of a guard locking device
6.3 Environmental conditions considerations
7 Design to minimize defeat possibilities of interlocking devices
7.1 General
7.2 Additional measures to minimize defeat possibilities of interlocking devices
8 Control requirements
8.1 General
8.2 Assessment of faults
8.3 Prevention of common cause failures
8.4 Release of guard locking device
8.5 Fault exclusion
8.6 Logical series connection of interlocking devices
8.7 Electrical and environmental conditions
9 Information for use
9.1 General
9.2 Information for use given by the manufacturer of interlocking devices
9.3 Information for use given by the manufacturer of the machine
Annex A (informative) Type 1 interlocking device — Examples
Annex B (informative) Type 2 interlocking device — Examples
Annex C (informative) Type 3 interlocking device — Example
Annex D (informative) Type 4 interlocking devices — Examples
Annex E (informative) Examples of other interlocking devices
Annex F (informative) Example of guard locking devices
Annex G (informative) Application examples of interlocking devices used within a safety function
Annex H (informative) Motivation to defeat interlocking device
Annex I (informative) Examples for maximum static action forces
Bibliography
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AS/NZS 4024.1602:2014
Preface
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Operating principles and typical forms of interlocking devices associated with guards
4.1 General
4.2 Principles of guard interlocking without guard locking
4.3 Principles of guard interlocking with guard locking
5 Requirements for the design and the installation of interlocking devices with and without guard locking
5.1 General
5.2 Arrangement and fastening of position switches
5.3 Arrangement and fastening of actuators
5.4 Actuation modes of interlocking devices
5.5 Interface to control systems
5.6 Mechanical stop
5.7 Additional requirements on guard locking devices
6 Selection of an interlocking device
6.1 General
6.2 Selection of a guard locking device
6.3 Environmental conditions considerations
7 Design to minimize defeat possibilities of interlocking devices
7.1 General
7.2 Additional measures to minimize defeat possibilities of interlocking devices
8 Control requirements
8.1 General
8.2 Assessment of faults
8.3 Prevention of common cause failures
8.4 Release of guard locking device
8.5 Fault exclusion
8.6 Logical series connection of interlocking devices
8.7 Electrical and environmental conditions
9 Information for use
9.1 General
9.2 Information for use given by the manufacturer of interlocking devices
9.3 Information for use given by the manufacturer of the machine
Annex A (informative) Type 1 interlocking device — Examples
Annex B (informative) Type 2 interlocking device — Examples
Annex C (informative) Type 3 interlocking device — Example
Annex D (informative) Type 4 interlocking devices — Examples
Annex E (informative) Examples of other interlocking devices
Annex F (informative) Example of guard locking devices
Annex G (informative) Application examples of interlocking devices used within a safety function
Annex H (informative) Motivation to defeat interlocking device
Annex I (informative) Examples for maximum static action forces
Bibliography
AS/NZS 4024.1602:2014
Online Library subscription information
Online library subscriptions provide a cost-effective solution for organisations of any size to access the latest standards, offering 24/7 access to a personalised catalogue. The service ensures subscribers have have the most up-to-date version of selected standards, incluing automatic updates for any amendments or versions. Pricing is dependent on the chosen standards and the number of concurrent users, with discounts applied from the standards PDF price. For customised subscriptions or further inquiries, contact the Online Library team.