En Iso 13849--1 - Siemens Sinumerik 840D sl Function Manual

Sinumerik safety integrated
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Regulations and standards
1.2 Safety of machinery in Europe
Systems for executing
safety- -related control
functions
A
Non--electrical (e.g. hydraulic,
pneumatic)
B
Electromechanical (e.g. relay
and/or basic electronics)
C
Complex electronics (e.g. pro-
grammable electronics)
D
A combined with B
E
C combined with B
F
C combined with A or
C combined with A and B
"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 architecture in compliance with EN 62061
Comment 3:
For non--electrical systems: Use parts/components that correspond to EN ISO 13849--1 as subsystems
1.2.4
EN ISO 13849- - 1
EN ISO 13849--1 is based on previous standard EN 954--1, and additionally
requires a quantitative consideration of the safety functions. The following safety--
related parameters are required for components/devices:
S Category (structural requirement)
S PL: Performance Level
S MTTF
d
S DC:
S CCF:
The standard describes how the performance level (PL) is calculated for safety--
related components of the controller on the basis of designated architectures. In
the event of any deviations from this, EN ISO 13849--1 refers to EN 61508.
When combining several safety--related parts to form a complete system, the stan-
dard explains how to determine the resulting PL.
1-20
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
EN ISO 13849- -1
Restricted to the designated ar-
chitectures (see comment 1)
and max. up to PL = e
Restricted to the designated ar-
chitectures (see comment 1)
and max. up to PL = d
Restricted to the designated ar-
chitectures (see comment 1)
and max. up to PL = e
Restricted to the designated ar-
chitectures (see comment 1)
and max. up to PL = d
See comment 2
: Mean time to dangerous failure
Diagnostics Coverage
Common Cause Failure
X
Not covered
All architectures and max. up to
SIL 3
All architectures and max. up to
SIL 3
All architectures and max. up to
SIL 3
X
© Siemens AG 2015 All Rights Reserved
10/15
EN 62061
X
See comment 3
X
See comment 3

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