Safety Integrated function
8.1 Standards and regulations
SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 04/2019, A5E36037884-007
297
The application areas of EN ISO 13849-1, EN 62061, and EN 61508 are very similar. To
help users make an appropriate decision, the IEC and ISO associations have specified the
application areas of both standards in a joint table in the introduction to the standards. EN
ISO 13849-1 or EN 62061 should be applied depending on the technology (mechanics,
hydraulics, pneumatics, electrics, electronics and programmable electronics), risk
classification and architecture.
Systems for executing safety-related control
functions
Non-electrical (e.g. hydraulic, pneumatic)
B Electromechanical (e.g. relay and/or basic
electronics)
Restricted to the designated
architectures (see comment
1) and max. up to PL = e
All architectures and max. up
to SIL 3
C Complex electronics (e.g. programmable
electronics)
Restricted to the designated
architectures (see comment
All architectures and max. up
to SIL 3
D A standards combined with B standards Restricted to the designated
architectures (see comment
X
See comment 3
E C standards combined with B standards Restricted to the designated
architectures (see comment
All architectures and max. up
to SIL 3
F C standards combined with A standards or C
standards combined with A standards and B
X
See comment 2
X
See comment 3
"X" indicates that the point is covered by this standard.
Comment 1:
Designated architectures are described in Annex B of EN ISO 13849-1 and provide a simplified basis for the quantification.
Comment 2:
For complex electronics: Using designated architectures in compliance with EN ISO 13849-1 up to PL = d or every archi-
tecture in compliance with EN 62061.
Comment 3:
For non-electrical systems: Use components that comply with EN ISO 13849-1 as sub-systems.
A qualitative analysis according to DIN ISO EN 13849-1 is not sufficient for modern control
systems due to their technology. Among other things, DIN EN ISO 13849-1 does not take
into account time behavior (e.g. test interval and/or cyclic test, lifetime). This results in the
probabilistic approach in DIN EN ISO 13849-1 (probability of failure per unit time).
DIN EN ISO 13849-1 takes into account complete safety functions and all the devices
required to execute these. With DIN EN ISO 13849-1, safety functions are investigated from
the qualitative perspective as well as the quantitative perspective. Performance levels (PL),
which are based on the categories, are used. The following safety-related characteristic
quantities are required for devices/equipment:
● Category (structural requirement)
● PL: Performance level
To Next Page
Loading...
