Siemens SINAMICS S120 Manual page 39

System components
• Line-side power components, such as fuses, contactors, reactors, and filters for switching the
power supply and meeting EMC requirements.
• Line Modules, which supply power centrally to the DC link
• DC link components (optional), which stabilize the DC link voltage.
• Motor Modules, which act as inverters, receive power from the DC link, and supply the
connected motors
• Power components on the motor side, such as reactors and Voltage Protection Modules,
which allow output currents and output voltages to be reduced
To carry out the required functions, SINAMICS S120 is equipped with:
• Control Units that process the drive and technological functions across all axes
• Additional system components to expand the functionality and to handle various interfaces
for encoders and process signals
SINAMICS S120 components are intended for installation in cabinets. They have the following
features and characteristics:
• Easy to handle, simple installation and wiring
• Practical connection system, cable routing in accordance with EMC requirements
• Standardized design, side-by-side mounting
Note
Mounting position in the cabinet
As a general rule, SINAMICS S120 components must be mounted vertically in the control
cabinet. If components can be mounted with alternative orientations, this is stated in the
technical data.
NOTICE
Overheating of components due to incorrect mounting position
Incorrectly installed components can overheat in operation. Overheating can lead to
malfunctions and damage to components.
• Install the components only in the permissible mounting position in the control cabinet.
Booksize format
Units in the booksize format are optimized for multi-axis applications and are mounted adjacent
to one another. The connection for the shared voltage-source DC link is an integral feature.
Booksize format offers various air cooling options:
• Internal air cooling
• External air cooling (see note)
• Cold plate cooling (see note)
Control Units and additional system components
Equipment Manual, 06/2020, 6SL3097-5AH00-0BP2
System overview
3.4 SINAMICS S120 components
37