Siemens SINAMICS S120 Manual page 180

Motor Modules
4.1 Description
Operating principle
Motor Modules are designed for multi-axis drive systems and are controlled by either a
CU320-2 or a SIMOTION D Control Unit. Motor Modules are interconnected by means of a
shared DC busbar.
One or more Motor Modules are supplied with energy for the motors via the DC link. Both
synchronous and induction motors can be operated.
Since the Motor Modules share the same DC link, they can exchange energy with one
another, i.e. if one Motor Module operating in generator mode produces energy, the energy
can be used by another Motor Module operating in motor mode. The DC link is supplied with
line voltage by a Line Module.
Characteristics of the Motor Modules
● Version for 510 VDC to 750 VDC from 210 up to 1405 A
● Internal air cooling
● Short-circuit/ground-fault-proof
● Electronic rating plate
● Operating status and error status via LEDs
● DRIVE-CLiQ interface for communication with the Control Unit and/or other components
● Integration in system diagnostics
178
Version for 675 VDC to 1080 VDC from 85 up to 1270 A
in the drive line-up.
Manual, (GH3), 01/2013, 6SL3097-4AE00-0BP3
Chassis power units