Overload Capability - Siemens SINAMICS S120 Manual

Cabinet Modules
6.3 Motor Modules
6.3.5

Overload capability

The Motor Modules Chassis format have 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.
For overload, the following precondition applies: The drive is operated as a maximum with its
base load current before and after the overload occurs (a duty cycle duration of 300 s is
used as a basis here).
Another precondition is that the drive is operated with its factory-set pulse frequency at
output frequencies >10 Hz.
For additional information on the overload capability, see the Low Voltage Configuration
Manual and in the SINAMICS S 120 Function Manual Drive Functions.
Low overload
The base load current I
duty cycle of 300 s.
Figure 6-18
202
is based on a duty cycle of 110 % for 60 s or 150 % for 10 s with a
L
Low overload
Cabinet Modules liquid cooled
Equipment Manual, 04/2020, A5E37067587A