1-4 PACSystems* RX3i PROFINET Controller Manual – December 2011 GFK-2571A
Operating Range for Surrounding Air Temperature
0 to 60°C surrounding air temperature under the following
installation:
▪ 12-slot panel mounted backplane
▪ Two PNC modules in adjacent slots per backplane
▪ 1 GB Fiber SFPs
▪ All four ports active
The following installation exceptions are cumulative:
Reduces maximum operating temperature:
▪ If 7 slot backplane, then reduce by 2°C
▪ If air mounted (rack mount), then reduce by 2°C
▪ If three or four PNCs per backplane, then reduce by 1°C
▪ Either/or:
- If 100 MB Fiber SFPs installed, then reduce by 5°C
- If Copper SFPs operating at 1 GB, then reduce by 6°C
Increases maximum operating temperature to an upper limit of
60°C:
▪ If only one PNC per backplane, then increase by 2°C
▪ If PNC in non-adjacent slots, then increase by 1°C
▪ If Copper SFP operating at 100MB, then increase by 4°C
▪ If RJ45 ports unused, then increase by 0°C
▪ If 16 slot backplane, then increase by 0°C
Example - Calculating Maximum Operating Temperature with Installation Exceptions
Baseline Installation 60°C
7 slot Backplane -2°C
Two PNC modules in non-adjacent slots +1°C
Copper SFPs operating at 1 GB -6°C
Maximum operating temperature after installation exceptions 53°C
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