Siemens SINAMICS S110 Manual page 33

Derating as a function of the output frequency
FSA - FSC
If the Power Modules of frame sizes FSA - FSC are operated at an output frequency < 22
Hz, you must reduce the maximum possible output current as follows:
Figure 2-6
FSD - FSE
For Power Modules of frame sizes FSD - FSE, the following derating must be considered for
an output frequency of 10 Hz:
Figure 2-7
Continuous duty
Short-time duty
Sporadic short-time duty
SINAMICS S110
Manual, 07/2015, 6SL3097-4AC10-0BP5
Reduction of the output current as a function of the output frequency (FSA - FSC)
Reduction of the output current as a function of the output frequency (FSD - FSE)
permissible operating state for the complete operating time
operating state permissible for less than 2% of the operating time
operating state only permissible for less than 1 % of the operating
time
System overview
2.5 Derating
33