Conclusion - Abb Ac500-S Application Note

Application Note for "Usage of AC500 digital standard I/Os in functional safety applications up to PL c (ISO 13849-1)", V1.0.0

4 Conclusion

The results of our safety analysis confirm that AC500 digital standard I/O channels can
be used in functional safety applications up to PL c (ISO 13849-1). The functional
safety calculation according to IEC 62061 standard (applications up to SIL CL 1) can
be similarly done, if required.
DANGER
In special cases, digital standard I/O modules from AC500 platform can be also used
in functional safety applications up to PL d (ISO 13849-1) and SIL CL 2 (IEC 62061).
However, more detailed functional safety application analysis is required (contact
AC500 technical support at
in this document.
We reserve all rights in this document. Reproduction, use or disclosure to third parties without express authority is strictly forbidden. Ó 2015 ABB Ltd.
The presented approach enables the usage of AC500 digital stand-
ard I/O modules in functional safety applications up to PL c (ISO
13849-1). However, the implementation, verification and validation
of the approach in practice according to ISO 13849-1 and/or IEC
62061 will remain always application specific because standard
(non-safety) AC500 modules become involved in the execution of
functional safety functions. Thus, the responsibility for correct im-
plementation, verification and validation of the proposed approach
is fully within the end-customer responsibility.
www.abb.com/PLC for more details), which is not shown
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