Siemens SIMATIC HMI series - Page 241

Technical specifications
11.8 Technical specifications
Mobile Panels 2nd Generation
Operating Instructions, 09/2018, A5E33876626-AC
241
Safety characteristics (compatibility of Mobile Panels 2nd Generation with PN basic and
PN plus connection boxes)
● In accordance with IEC 61508
Maximal attainable safety integrity level
SIL2 (Proof Test Interval 1 year)
Mode of operation
High and low demand mode
Hardware fault tolerance (HFT) 1
Classification
B
Repair Time 100 h
Probability of a dangerous failure per hour (PFHd)
< 3 × 10
-8
1/h
Probability of a dangerous failure on demand (PFDavg)
< 2 × 10
-4
Mission Time
20 years
● In accordance with ISO 13849-1
Meantime to Failure (MTTFd)
High
Diagnostic Coverage (DCavg)
Medium
Performance Level
d
Category
3
Safety characteristics (compatibility of Mobile Panels 1st Generation with
connection box compact, connection box standard and connection box advanced)
● In accordance with IEC 61508
Maximal attainable safety integrity level
SIL2 (Proof Test Interval 1 year)
Mode of operation
High and low demand mode
Hardware fault tolerance (HFT)
1
Classification
B
Repair Time
100 h
Probability of a dangerous failure per hour (PFHd)
≤ 1,25 × 10
-7
1/h
Probability of a dangerous failure on demand (PFDavg)
< 6 × 10
-4
Mission Time
20 years
● In accordance with ISO 13849-1
Meantime to Failure (MTTFd)
High
Diagnostic Coverage (DCavg)
Medium
Performance Level d
Category
3
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.