BS PD ISO/TR 24119:2015
Safety of machinery. Evaluation of fault masking serial connection of interlocking devices associated with guards with potential free contacts
standard by BSI Group , 11/30/2015
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About This Item
Full Description
BS PD ISO/TR 24119:2015 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:
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.
Cross References:
ISO 12100
ISO 13849-1:2006
ISO 14119:2013
ISO 13849-2:2012
ISO 10218-2
IEC 60204-1:2005
All current amendments available at time of purchase are included with the purchase of this document.
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 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.
Cross References:
ISO 12100
ISO 13849-1:2006
ISO 14119:2013
ISO 13849-2:2012
ISO 10218-2
IEC 60204-1:2005
All current amendments available at time of purchase are included with the purchase of this document.
