Siemens SINAMICS S120 Equipment Manual page 140

Motor Modules
4.1 Description
Operating principle
Motor Modules are designed for multi-axis drive systems and are controlled by either a
CU320 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 V DC to 720 V DC from 210 A 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
140
Version for 675 V DC to 1035 V DC from 85 A to 1270 A
in the drive line-up.
Manual, (GH3), 10/2008, 6SL3097-2AE00-0BP3
Chassis power units