Power Sections - Siemens SINAMICS S120 Equipment Manual

System Overview

1.6 Power sections

The following power components are available:
• Line-side power components, such as fuses, contactors, reactors, and filters for switching
• 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
To carry out the required functions, SINAMICS S120 is equipped with:
• A Control Unit that carries out all drive and technological functions across all axes.
• Additional system components that enhance functionality and offer different interfaces for
The SINAMICS S120 components were developed 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, seamless integration
• Internal ventilators (other cooling methods available on request).
1.6 Power sections
Line Modules
Convert the three-phase supply into a DC voltage for the DC link.
• Smart Line Modules
• Active Line Modules
Motor Modules
• Convert energy from the DC link for the connected motors with variable voltage and
1-8
the power supply and meeting EMC requirements.
connected motors.
encoders and process signals.
The Smart Line Modules generate a non-stabilized DC link voltage and are capable of
regenerative feedback.
The Active Line Modules generate a stabilized DC link voltage and are capable of
regenerative feedback.
variable frequency.
Equipment Manual Control Units and Additional System Components
Equipment Manual, (GH1), 12/2004 Edition, 6SL3097-2AH00-0BP1