Siemens SIMATIC S7-1500 System Manual page 363

CPU 1515R-2 PN
CPU 1517H-3 PN
CPU 1518HF-4 PN
The maximum "operating height above sea level" is described in the technical specifications
of the respective module. The product data sheets with daily updated technical specifications
can be found on the Internet (https://support.industry.siemens.com/cs/ww/en/ps/td) at
Industry Online Support. Enter the article number or the short description of the desired
module on the website.
For altitudes > 2000 m, the following constraints apply to the maximum specified ambient
temperature:
Restrictions of the specified maximum ambient temperature in reference to the
installation altitude
Installation altitude
-1000 m to 2000 m
2000 m to 3000 m
3000 m to 4000 m
4000 m to 5000 m
Base value for application of the derating factor is the maximum permissible ambient temperature in
1)
°C for 2000 m.
NOTE
• Linear interpolation between altitudes is permissible.
• The derating factors compensate for the decreasing cooling effect of air at higher altitudes
due to lower density.
• Note the mounting position of the respective CPU in the technical specifications. The basis
is the standard IEC 61131-2:2017.
• Make sure that the power supplies you use are rated for altitudes > 2000 m.
• The displays of the R/H CPUs are designed for an altitude of ≤ 3,000 m. When operating
the device at altitudes > 3,000 m, you may experience problems with the CPU display in
rare cases; however, these do not affect operation of the CPU.
• The synchronization modules for the CPU 1517H-3 PN/CPU 1518HF-4 PN (sync module
1 GB FO 10 m: 6ES7960-1CB00-0AA5, Sync module 1 GB FO 10 km:
6ES7960-1FB00-0AA5, Sync module 1 GB FO 40 km: 6ES7960-1FE00-0AA5) are also
released for 5000 m.
Effects on the availability of modules
The higher cosmic radiation present during operation at altitudes above 2000 m will also start
to have an effect on the failure rate of electronic components (the so-called soft error rate).
In individual cases this might result in a primary backup switchover.
S7-1500R/H redundant system
System Manual, 11/2022, A5E41814787-AD
15.4 Mechanical and climatic ambient conditions
6ES7515-2RM00-0AB0
6ES7515-2RN03-0AB0
6ES7517-3HP00-0AB0
6ES7518-4JP00-0AB0
Derating factor for ambient temperature
1.0
0.9
0.8
0.7
Technical specifications
FS01 or higher 5,000 m
1)
363