Overload Capability - Siemens SINAMICS S120 Equipment Manual

Motor Modules
6.6 Technical specifications
6.6.1

Overload capability

The Motor Modules have an overload reserve e.g. to handle breakaway torques.
In the case of drives with overload requirements, the appropriate base-load current must,
therefore, be used as a basis for the required load.
The criterion for overload is that the Motor Module is operated with its base load current
before and after the overload occurs (a load duration of 300 s is used as a basis here).
Another precondition is that the Motor Module is operated at its factory-set pulse frequency
at output frequencies > 10 Hz.
Low overload
The base load current for low overload (I
150% for 10 s.
Figure 6-13
168
Low overload
) is based on a load duty cycle of 110% for 60 s or
L
Water-cooled chassis power units for common cooling circuits
Manual, 08/2017, 6SL3097-4AM10-0BP0