Siemens SIMATIC HMI Series Operating Instructions Manual page 241

Safety characteristics (compatibility of Mobile Panels 2nd Generation with PN basic and
PN plus connection boxes)
● In accordance with IEC 61508
● In accordance with ISO 13849-1
Safety characteristics (compatibility of Mobile Panels 1st Generation with
connection box compact, connection box standard and connection box advanced)
● In accordance with IEC 61508
● In accordance with ISO 13849-1
The safety characteristics according to IEC 61508 and ISO 13849-1 in the table above are
based on the SN 29500 and an ambient temperature of 60 °C.
Mobile Panels 2nd Generation
Operating Instructions, 09/2018, A5E33876626-AC
Maximal attainable safety integrity level
Mode of operation
Hardware fault tolerance (HFT)
Classification
Repair Time
Probability of a dangerous failure per hour (PFHd)
Probability of a dangerous failure on demand (PFDavg)
Mission Time
Meantime to Failure (MTTFd)
Diagnostic Coverage (DCavg)
Performance Level
Category
Maximal attainable safety integrity level
Mode of operation
Hardware fault tolerance (HFT)
Classification
Repair Time
Probability of a dangerous failure per hour (PFHd)
Probability of a dangerous failure on demand (PFDavg)
Mission Time
Meantime to Failure (MTTFd)
Diagnostic Coverage (DCavg)
Performance Level
Category
Technical specifications
11.8 Technical specifications
SIL2 (Proof Test Interval 1 year)
High and low demand mode
1
B
100 h
< 3 × 10 1/h
-8
< 2 × 10
-4
20 years
High
Medium
d
3
SIL2 (Proof Test Interval 1 year)
High and low demand mode
1
B
100 h
≤ 1,25 × 10 1/h
-7
< 6 × 10
-4
20 years
High
Medium
d
3
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