System overview
2.5 Derating
SINAMICS S110
32 Manual, 07/2015, 6SL3097-4AC10-0BP5
Derating as a function of the ambient temperature
If the Power Modules are operated at ambient temperatures > 40 °C, you must reduce the
maximum possible output current as follows:
Figure 2-4 Reduction of the output current as a function of the temperature
The maximum permissible ambient temperature for all Power Modules is 60 °C.
Derating as a function of the pulse frequency
If the Power Modules are operated at a pulse frequency that is above the rated pulse
frequency, you must reduce the maximum possible output current as follows: You will find
the rated pulse frequency in the Technical Data of the relevant Power Module.
Figure 2-5 Reduction of the output current as a function of the quotient of the pulse frequency and
rated pulse frequency
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