Siemens SINAMICS S120 Manual page 295

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. The Motor Modules are connected through a
common 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 Motor Modules Chassis-2
• Version for 510 ... 720 V DC (line voltage 3 AC 380 ... 480 V) from 655 to 1200 A
• Internal air cooling with variable-speed fan; the fan speed is controlled as a function of the
load and temperature
• 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
• The DC link fuses are not included; they are provided on the plant/system side to make
diagnostics simpler and they can be simply replaced in the control cabinet, see Chapter
"Technical data (Page 317)".
Air-cooled chassis power units
Equipment Manual, 06/2020, 6SL3097-5AE00-0BP3
Motor Modules
6.2 Motor Modules Chassis-2
293