Connecting To The Infeed; Connecting The Motor Cables - Siemens SINAMICS S120 Manual

Establishing the connection
Connect the cable to the terminal block in the next transport unit:
● 2-phase cable (1-3): for 230 V AC at terminals -X140:1, 3
● 2-phase cable (1-4): for 24 V DC at terminal -X150:1, 4
4.5.5.4

Connecting to the infeed

Description
The voltages provided by the auxiliary power supply system must be produced by an
auxiliary power supply (e.g. using option K76 "Auxiliary power generation in the Line
Connection Module").
If clearances have to be bridged between the supplying Cabinet Modules, then the supply for
the auxiliary power supply system can be connected at the supply terminals in the Basic Line
Connection Module or Active Line Connection Module. The maximum current-carrying
capacity of the auxiliary power supply system is 32 A. In the case of the external power
supply, this must be protected on the line side.
4.5.6

Connecting the motor cables

Preparatory steps
● Install and secure the cabinet units properly.
● Disconnect the cabinet units from the power supply.
● Make sure that all the necessary safety measures have been taken at the installation
location.
Danger to life as a result of electric shock when permanent magnet synchronous motors
rotate
As soon as the motor rotates, a voltage is generated at the terminals, which when touched,
can result in death or severe injury.
• Electrically disconnect the motor when working on the converter.
• If it is not possible to disconnect the connecting cables to the motor, secure the motor so
Cabinet Modules liquid cooled
Manual, 10/2015, A5E37067587A
WARNING
that it cannot undesirably rotate, e.g. using a holding brake.
Electrical installation
4.5 Connections
85