Connecting Motor Cable - Siemens SINAMICS G180 Installation And Operating Instructions Manual

Electrical connection
6.6 Motor connection
distances are also possible for individual types. Contact the factory for precise values if you
are in the limit range or if there is a long distance between the motor and inverter.
NOTICE
Destruction of the inverters
If you lay too many wires in parallel for the motor cable, the capacitive current in the motor
cable can increase unacceptably and destroy the inverter output filter. In the case of operation
with several motors or parallel wiring of motor cables, the maximum possible distance
between inverter and motor reduces. Cabinet units are suitable for wiring in parallel. Contact
the factory for the precise values. Reduce the number of parallel wires to permissible values.
NOTICE
Destruction of the motor or the inverter output filter
If you exceed the maximum motor cable length, destruction of the motor or the inverter output
filter can occur. Consult the factory for longer motor cables.
NOTICE
Winding or bearing damage
If you use motors which are not designed for inverter-fed operation, premature winding or
bearing damage can occur. Consult the motor manufacturer to find out whether the motor is
suitable for inverter operation. Please bear in mind that IEC 60034-17 is applicable to motors
that are designed for line operation but are operated with an inverter. Smaller values for the
peak voltage apply here. Dimension the cable lengths after consultation with the
manufacturer.
6.6.6

Connecting motor cable

Connect the motor to terminals U2, V2, W2 of terminal strip -X1 of theinverter. Refer to the
technical data for the correct tightening torques for the power cable connection.
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Installation and operating instructions Sinamics G180
Operating Instructions, 05/2013, 4BS0751-001