Siemens SINAMICS S120 Manual page 77

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
In the case of three-phase induction motors with a clockwise phase sequence (looking at the
drive shaft), the motor must be connected to the cabinet unit as follows.
Table 4- 9
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).
Note
If an incorrect phase sequence was connected when the cables were routed, and the phase
sequence cannot be corrected by subsequently swapping the motor cables, it can be
corrected by means of a negative setpoint entry or by changing a parameter.
With motors that can be operated in a star/delta configuration, the windings must be checked
to ensure that they have been connected properly. Please refer to the relevant
documentation for the motor and note the permissible insulation voltage when connecting
the motor to a converter.
Cabinet Modules
Manual, (GH5), 05/2010, A5E03263538A
Note
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.
Cabinet and motor connection terminals
Cabinet (motor connection terminals)
U2/T1
V2/T2
W2/T3
Electrical installation
4.4 Connections
Motor (connection terminals)
U
V
W
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