Connecting The Motor In A Star Or Delta Connection; Overview - Siemens SINAMICS G115D Operating Instructions Manual

Wiring
4.10 Connecting the motor
Glanded variant
X2 - motor power terminals
Further information
4.10.2

Connecting the motor in a star or delta connection

4.10.2.1

Overview

Standard asynchronous motors up to a rated power of approximately 3 kW are normally
connected in a 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
66
Cables and connectors (Page 57)
Signal Description
U Phase U
V Phase V
W Phase W
EM+ EM brake positive (180 V DC)
EM- EM brake negative (180 V DC)
T+ Motor temperature sensor positive
T- Motor temperature sensor negative
Protective earth
Screw tightening torque:
• U/V/W: 1.0 Nm/8.9 lbf.in;
• : 2.2 Nm/19.5 lbf.in
Cable gland size: M25 * 1.5
In a star connection, the motor can provide its
rated torque M in the range 0 ... rated fre-
N
quency f .
N
Rated voltage U = 400 V is available at a rated
N
frequency f = 50 Hz.
N
The motor goes into field weakening above
the rated frequency. In field weakening, the
available motor torque decreases linearly with
1/f. In field weakening, the available power
remains constant.
Operating Instructions, 09/2020, FW V4.7 SP13, A5E48681219B
SINAMICS G115D distributed drive