PD ISO/TR 24119:2015 - Safety of machinery. Evaluation of fault masking serial connection of interlocking devices associated with guards with potential free contacts

PD ISO/TR 24119:2015

Safety of machinery. Evaluation of fault masking serial connection of interlocking devices associated with guards with potential free contacts

Status : Current   Published : November 2015

Format
PDF

Format
HARDCOPY



This Technical Report illustrates and explains principles of fault masking in applications where multiple interlocking devices with potential free contacts (B1 to Bn) are connected in series to one logic unit (K) which does the diagnostics (see Figures 1 to 7). It further provides a guide how to estimate the probability of fault masking and the maximum DC for the involved interlocking devices. This Technical Report only covers interlocking devices in which both channels are physical serial connections.

This Technical Report does not replace the use of any standards for the safety of machinery.

The goals of this Technical Report are the following:

  • guidance for users for estimation of the maximum DC values;

  • design guidance for SRP/CS.

NOTE 1

Interlocking devices with integrated self-monitoring are not included in the scope of this Technical Report.

NOTE 2

Limitation is also given by the diagnostic means implemented in the logic unit.

NOTE 3

This Technical Report is not restricted to mechanical actuated position sensors.




Standard NumberPD ISO/TR 24119:2015
TitleSafety of machinery. Evaluation of fault masking serial connection of interlocking devices associated with guards with potential free contacts
StatusCurrent
Publication Date30 November 2015
Normative References(Required to achieve compliance to this standard)ISO 12100, ISO 13849-1:2006, ISO 14119:2013
Informative References(Provided for Information)ISO 13849-2:2012, ISO 10218-2, IEC 60204-1:2005
International RelationshipsISO/TR 24119:2015
DescriptorsEquipment safety, Occupational safety, Hazards, Safety measures, Risk assessment, Design, Product design, Ergonomics, Accident prevention, Control systems, Control devices, Safety devices, Machine guards, Instructions for use, Handbooks, Marking
ICS13.110
Title in FrenchSécurité des machines. Évaluation du masquage de fautes dans les connexions en série des dispositifs d’interverrouillage associés aux contacts sans potentiel
CommitteeMCE/3
ISBN978 0 580 86043 0
PublisherBSI
FormatA4
DeliveryYes
Pages28
File Size2.42 MB
Price£182.00


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