Siemens SIMATIC S7-1500 System Manual page 501

Use over 2 000 m above sea level and extended temperature range
C.2 CPUs
Below you will find the probability of failure values (PFDavg and PFH values) for the fail-safe
CPUs mentioned in the table with a service life of 20 years and with a repair time of 100
hours:
Operation in low demand mode in accordance with IEC
61508:2010:
PFDavg = Average probability of a dangerous failure on de-
mand
< 2E-05
Replacement part displays
Replacement part
displays for R/H
CPUs
35 mm 6ES7591-1AA01-0AA0
70 mm 6ES7591-1BA02-0AA0
Replacement part display modules
Replacement part
display modules for
R-CPUs
35 mm 6ES7591-1AB00-0AA0
70 mm 6ES7591-1BB00-0AA0
500
Article number
Temperature
range [°C]
Article number
Temperature
range [°C]
-25 to +60
Operation in high demand or continuous mode in accord-
ance with IEC 61508:2010:
PFH = Average frequency of a dangerous failure [h-1]
< 1E-09 at an installation altitude ≤ 3 000 m
< 2E-09 at an installation altitude > 3 000 m to 5 000 m
Ambient temperature
As of
version
0 to +60 FS 01
0 to +60 FS 01
Ambient temperature
As of
version
FS 01
Installation altitude
Max.
altitude [m] version
5 000
5 000
Installation altitude
Max.
altitude [m] version
5 000
S7-1500R/H redundant system
System Manual, 01/2024, A5E41814787-AF
As of
FS 01
FS 01
As of
FS 01