Siemens SINAMICS S120 Manual page 94

Electrical installation
4.6 Connections
Note
Position of the connections
For the position of the connections for motor cables, see the layout diagrams included on
the customer DVD supplied with the device.
The motor ground should be fed back directly to the cabinet (PE busbar) and connected.
Connection cross sections
Refer to the "Technical data" for the Motor Modules, "Cabinet Modules" chapter for the
maximum connection cross sections.
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- 10
In contrast to the connection for the clockwise phase sequence, two phases have to be
reversed for a counter-clockwise phase sequence (looking at the drive shaft).
92
Cabinet and motor connection terminals
Cabinet (motor connection terminals)
U2/T1
V2/T2
W2/T3
Motor (connection terminals)
U
V
W
Manual, 03/2013, A5E03263538A
Cabinet Modules