• NS EN 574 : 1996 + A1 2008

    Current The latest, up-to-date edition.

    SAFETY OF MACHINERY - TWO-HAND CONTROL DEVICES - FUNCTIONAL ASPECTS - PRINCIPLES FOR DESIGN

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    Published date:  12-01-2013

    Publisher:  Norwegian Standards (Norges Standardiseringsforbund)

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    Table of Contents - (Show below) - (Hide below)

    Foreword
    1 Scope
    2 Normative references
    3 Definitions
        3.1 Two-hand control device
        3.2 Input signal
        3.3 Control actuating device
        3.4 Simultaneous actuation
        3.5 Synchronous actuation
        3.6 Signal converter
        3.7 Signal processor
        3.8 Output signaL
        3.9 Response time
        3.10 Mobile two-hand control device
    4 Types of two-hand control devices and their selection
    5 Characteristics of safety functions
        5.1 Use of both hands (simultaneous actuation)
        5.2 Relationship between input signals and output
              signal
        5.3 Cessation of the output signal
        5.4 Prevention of accidental operation
        5.5 Prevention of defeat
        5.6 Re-initiation of the output signal
        5.7 Synchronous actuation
    6 Requirements related to categories of control
        6.1 Category selection
        6.2 Use of category 1
        6.3 Use of category 3
        6.4 Use of category 4
    7 Use of programmable electronic systems
    8 Prevention of accidental actuation and of defeat
        8.1 Common considerations
        8.2 Prevention of defeat using one hand
        8.3 Prevention of defeat using hand and elbow of the
              same arm
        8.4 Prevention of defeat using the forearm(s) or
              elbow(s)
        8.5 Prevention of defeat using one hand and any other
              part of the body (eg. knee, hip)
        8.6 Prevention of defeat by blocking one control
              actuating device
        8.7 Accidental actuation
    9 General requirements
        9.1 Ergonomic requirements
        9.2 Operating conditions, environmental influences
        9.3 Enclosures
        9.4 Selection, design and installation of control
              actuating devices
        9.5 Prevention of unintended output signals by
              acceleration forces
        9.6 Unintended operation of mobile and portable hand
              held machines
        9.7 Mobile two-hand control devices
        9.8 Safety distance
    10 Verification
        10.1 General requirements for verification
        10.2 Visual inspection
        10.3 Performance check
        10.4 Measurement
        10.5 Prevention of defeat
    11 Marking
    12 Information for installation, use and maintenance
        12.1 Provision of information
        12.2 Installation instructions
    Annexes
    A (normative) Measurement tests for the prevention of
        defeat
    B (informative) Use of categories (according to EN 954-1
        1996) in types of two-hand control devices
    C (informative) Bibliography

    ZA (informative) Relationship of this European Standard with
        EU Directives

    Abstract - (Show below) - (Hide below)

    Defines safety requirements for a two-hand control device and its logic unit. Covers main characteristics of two-hand control devices for safety measures and sets out combinations of functional characteristics for three types. Not applicable for use as enabling, hold to run and special control devices.

    General Product Information - (Show below) - (Hide below)

    Development Note 1996 Edition Re-Issued in October 2008 & incorporates AMD 1 2008. (10/2008)
    Document Type Standard
    Publisher Norwegian Standards (Norges Standardiseringsforbund)
    Status Current
    Superseded By
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