Mounting
4.3 Use at altitudes over 2,000 m
SIMATIC RF166C
24
Operating Instructions, 12/2019, C79000-G8976-C578-01
Fastener for cable ties
All communication modules have integrated fastening points for cable ties. The fastening
points are located at all four corners of the modules.
The following figure shows the upper left fastening point for 2.5 mm wide cable ties.
Figure 4-2
Securing RF166C communication module with cable ties
4.3
Use at altitudes over 2,000 m
The RF166C communication modules can be used at elevations > 2,000 m. See the
following information and restrictions in this regard.
Restrictions of the maximum specified ambient temperature
Table 4- 2
Restrictions of the maximum specified ambient temperature with regard to the altitude
Altitude
Derating factor
-1,000 to 2,000 m
1.0
2,000 to 3,000 m
0.9
3,000 to 4,000 m
0.8
4,000 to 5,000 m
0.7
The basic value for application of the derating factor is the maximum permissible ambient
temperature up to +55 °C for altitudes up to 2,000 m. For altitudes > 2,000 m, you must
multiply the derating factor with the maximum permissible ambient temperature. This is
based on the standard IEC 61131-2:2017.
A linear interpolation between altitudes is permissible. The derating factors compensate for
the reduced cooling effect of air at higher altitudes due to the reduced density.
Note
Suitability of the power supply
Make sure that the power supply units you use are also suitable for altitudes > 2,000 m.
Содержание SIMATIC RF166C
Страница 6: ...Table of contents SIMATIC RF166C 6 Operating Instructions 12 2019 C79000 G8976 C578 01 ...
Страница 14: ...Security recommendations SIMATIC RF166C 14 Operating Instructions 12 2019 C79000 G8976 C578 01 ...
Страница 20: ...Description 3 3 Design SIMATIC RF166C 20 Operating Instructions 12 2019 C79000 G8976 C578 01 ...
Страница 98: ...Programming via SIMATIC controller SIMATIC RF166C 98 Operating Instructions 12 2019 C79000 G8976 C578 01 ...
Страница 156: ...Service and maintenance 10 5 Module replacement SIMATIC RF166C 156 Operating Instructions 12 2019 C79000 G8976 C578 01 ...
Страница 160: ...Dimensional drawings SIMATIC RF166C 160 Operating Instructions 12 2019 C79000 G8976 C578 01 ...
Страница 176: ...Service Support SIMATIC RF166C 176 Operating Instructions 12 2019 C79000 G8976 C578 01 ...