Siemens SINAMICS S120 Manual page 41

Derating as a function of the output frequency
Power Modules blocksize format (FSA to FSC)
If the Power Modules are operated at an output frequency < 22 Hz, then you must reduce
the output currents I
Figure 2-6
Power Modules Blocksize (FSD to FSF) and Power Modules Chassis
If the Power Modules are operated at an output frequency < 10 Hz, then you must reduce
the output currents I
Figure 2-7
Continuous operation
Short-time duty
Sporadic short-time duty
AC Drive
Manual, (GH6), 07/2016, 6SL3097-4AL00-0BP5
, I , I and I
n H S6 max
Reduction of the output current as a function of the output frequency
, I , I and I
n H S6 max
Reduction of the output current as a function of the output frequency
Permissible operating state for the complete operating time
Operating state permissible for less than 2% of the operating
time
Operating state permissible for less than 1% of the operating
time
as follows:
as follows:
System overview
2.6 Derating
41