Siemens SINAMICS G150 Operating Instructions Manual page 84

Electrical installation
4.8 Power connections
4. Connect the motor cables to the connections.
Note
The PE connection on the motor must be guided back directly to the cabinet unit and
connected there.
Direction of motor rotation
EN 60034-7 defines the two ends of an electric motor as follows:
● D (Drive End): Usually the drive end of the motor
● N (Non-Drive End): Usually the non-drive end of the motor
An electric motor rotates clockwise if the shaft rotates in the clockwise direction when
viewing the D-end.
For electric motors with 2 shaft ends, the direction of rotation must be determined based on
the shaft end specified as the drive end.
For clockwise rotation, the electric motor must be connected according to the following table.
Table 4- 5
In contrast to the connection for the clockwise phase sequence, two phases have to be
reversed with a counter-clockwise phase sequence (looking at the drive shaft).
82
Make sure that you connect the conductors in the correct sequence: U2/T1, V2/T2,
W2/T3 and U1/L1, V1/L2, W1/L3!
CAUTION
Tighten the screws with the appropriate torque (50 Nm for M12), otherwise the terminal
contacts could catch fire during operation.
Cabinet unit and motor connection terminals
Cabinet unit (connection terminals)
U2/T1
V2/T2
W2/T3
Motor (connection terminals)
U
V
W
Converter cabinet units
Operating Instructions, 03/2012, A5E03263466A