Siemens SINAMICS G150, Operating Manual

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Electrical Installation 11/03
SINAMICS G150
4-12
Operating Manual
Direction of Motor Rotation
With induction machines with a clockwise phase sequence (looking at the drive
shaft), the motor must be connected to the cabinet unit as follows.
Table 4-2 Connection terminals on the cabinet unit and motor
Cabinet unit (connection terminals) Motor (connection terminals)
U2/T1 U
V2/T2 V
W2/T3 W
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 command value or by
parameterizing the cabinet unit.
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 unit.
4.6.3 Adjusting the Fan Voltage (-U1 -T10)
A transformer is installed to ensure that the operating voltage of the 230 V fan is
correct. The location of the fan transformer is indicated in the layout diagrams
supplied.
The primary terminals of the transformer may need to be reconnected to the
existing supply voltage. The terminals must be connected to "0" and the supply
voltage.
380V 400V 440V 480V 0 600V CON 660V 690V 0