Siemens SINAMICS S120 Equipment Manual page 252

Motor Modules
6.1 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 ... 720 V DC (line voltage 3 AC 380 ... 480 V) from 210 to 1405 A
Version for 675 ... 1035 V DC (line voltage 3 AC 500 ... 690 V) from 85 to 1270 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
in the drive line-up
● Integration in system diagnostics
250
Air-cooled chassis power units
Manual, 07/2019, 6SL3097-4AE00-0BP9