BS EN 574:1996+A1:2008 Safety of machinery. Two-hand control devices. Functional aspects. Principles for design
BS EN 574:1996+A1:2008 specifies the safety requirements of a type of safety device called a two-hand control device.
BS EN 574 describes the main characteristics of two-hand control devices for the achievement of safety and sets out combinations of functional characteristics for three types. It provides requirements and guidance on the design and selection (based on a risk assessment) of two-hand control devices including their assessment, the prevention of defeat and the avoidance of faults.
BS EN 574 also provides requirements and guidance for two-hand control devices containing a programmable electronic system.
BS EN 574 applies to all two-hand control devices. It does not apply to devices intended to be used as enabling devices, hold to run devices and as special control devices.
BS EN 574 does not specify with which machines two-hand control devices shall be used. It also does not specify which types of two-hand-control device shall be used. Moreover it does not specify the distance between the two-hand control device and the danger zone.
Contents of BS EN 574:1996+A1:2008
Foreword
Introduction
Scope
Normative references
Definitions
Types of two-hand control devices and their selection
Characteristics of safety functions
Requirements related to categories of control
Use of programmable electronic systems
Prevention of accidental actuation and of defeat
General requirements
Verification
Marking
Information for installation, use and maintenance
Annex A (normative) Measurement tests for the prevention of defeat
Annex B (informative) Use of categories (according to EN 954-1:1996) in types of two-hand
control devices
Annex ZA (informative) !Relationship between this European Standard and the Essential
Requirements of EU Directive 98/37/EC
Annex ZB (informative) !Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC
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