Characteristics - Siemens SINAMICS S120 Manual

3.2.7.1

Characteristics

Overload capability
The Power Modules are equipped with an overload reserve e.g. to handle breakaway
torques.
In 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 drive 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).
Low overload
The base load current for low overload IL is based on a load duty cycle of 110% for 60 s or
150% for 10 s with a load duty duration of 300 s.
Figure 3-37
AC Drive
Manual, (GH6), 07/2007 Edition, 6SL3097-2AL00-0BP2
Low overload
Power Modules
3.2 Power Modules Chassis
115