Siemens SINAMICS G120 - Connecting the Motor to the Converter in a Star or Delta Connection

Connecting
4.4 Connecting the motor to the converter in a star or delta connection
Power Module PM240-2
64 Hardware Installation Manual, 01/2020, A5E33294624B AL
Note
Configuring a safety function
In order to use the "STO via powe
r module terminals" safety function, the function has to be
configured with a commissioning tool.
Further information and wiring examples are to be found in the "Safety Integrated" Function
Manual.
Manuals for your converter (Page 163)
4.4 Connecting the motor to the converter in a star or delta connection
Overview
Standard induction motors up to a rated power of approximately 3 kW are usually connected
in star/delta connection (Y/Δ) at 400 V/230 V. For a 400-V line supply, you can connect the
motor to the converter either in a star or in a delta connection.
Function description
Operating the motor in a star connection
In a star connection, the
motor can provide its
rated torque M
N
in the range 0 … rated fre-
quency
f
N
.
Rated voltage
U
N
= 400 V is available at a
rated frequency
f
N
= 50 Hz.
The motor goes into field weakening above
the rated frequency. In field weakening, t
he
available motor torque
decreases proportion-
ally with 1/f. In field weakening, the available
power remains constant.