Siemens SINAMICS S120 Equipment Manual page 70

Electrical installation
4.5 Connections
Connection cross sections
Refer to the "Technical data" for the Motor Modules, "Cabinet Modules" chapter for the
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- 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).
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 setting parameters for the cabinet.
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 required insulation voltage for operating the
cabinet.
70
Cabinet and motor connection terminals
Cabinet (motor connection terminals)
U2/T1
V2/T2
W2/T3
Motor (connection terminals)
U
V
W
S120 Cabinet Modules Equipment Manual
Manual, (GH5), 10/2008, A5E00427098A