Siemens SINAMICS G120P, Operating Instructions Manual

Page: 474 / 496

Technical specifications
11.2 General data
Inverter cabinet units
474
Operating Instructions, 12/2014, A5E32923362A
11.2.1.4 Operating ranges
At low output frequencies, the inverter can only operate with reduced output current.
The relationship is shown in the following diagram.
The diagram clearly distinguishes between continuous operational areas and temporary
operational areas.
The operational areas ensure the constant reliable operation of the inverter, in particular with
regards to the service life expectations.
Figure 11-4 Operating ranges
Explanation of the operating ranges:
● Continuous operation (green area in diagram)
In this area, continuous operation is permissible without limitations.
● Temporary operation (yellow area in diagram)
In this area, an operation for a total of 2% of the whole duration of operation is
permissible without significantly reducing the service life of the inverter. There is no
overload reaction thanks to the thermal monitoring model.
● Sporadic temporary operation (red area in diagram)
In this area, operation is only permissible for very short and rare operating conditions,
less than 0.1 % of the whole duration of operation, without significantly reducing the
service life of the inverter. There is no overload reaction thanks to the thermal monitoring
model, providing the times given in the diagram are respected.