Siemens SIMOTICS M-1PH8 - Page 242

• Use connector size 3.
• Assign the connector as shown in the "Power connector 3" diagram. Connect the protective
conductor.
&RQQHFWRUVL]H
8
9
:
*1<(
Figure9-22 Power connector, size 3 (looking onto the connector pins)
Star/delta connection via an external contactor circuit
When induction motors (SH 80 to SH 160) are used, it is possible to select one of the following
operating modes:
• Star connection
• Delta connection
Circuit to implement star-delta switchover
For induction motors, all six connection leads of the three winding phases are fed out to be able
to select the various operating modes.
The changeover is carried out outside the spindle using switching devices and equipment
that are not included with the motor spindle (i.e. these devices are not included in the scope
of delivery).
Note
Star/delta connection
When changing over the circuit con󹪝guration (star-delta), the appropriate data set for the closed-
loop motor control must also be changed-over.
A changeover may only be made when the spindle is in a no-load condition and with the power
module pulses inhibited.
For information about the circuit to implement the star-delta changeover, refer to the
following diagram and SINAMICS S120 Function Manual (FH1).
Electrical connection
9.3System integration
1PH8 SIMOTICS M main motors
240 Con󹪝guration Manual, 12/2022, A5E51895839A