SIEMENS
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Siemens NC 62 · 2016
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SINAMICS S120 drive system
Introduction
Additional system components
The structure of the drive system is defined by the selected
Control Unit, Line Module, and Motor Modules or Power Module.
An optimal solution can be obtained for the drive task using
these system components.
Additional system components
can be installed to expand the
system's scope of functions and adapt it perfectly to the drive
task in question.
System components are divided into the following categories:
•
DC link components
e.g. Braking Modules and braking resistors
Additional DC link components can be used as options to
stabilize the DC link voltage and/or to support the electronics
power supply.
•
Supplementary system components
e.g. Terminal Modules for expanding the I/O interfaces to the
machine interface
•
Encoder system connection
for connecting various types of encoders to SINAMICS S120
•
Line-side power components
such as fuses, contactors, reactors, and filters for switching
the power supply and meeting EMC requirements.
Energy efficiency
The SINAMICS S120 drive system saves energy by recovering
energy from the axes and using it within the DC link group of a
multi-axis configuration and by feeding it back into the supply
system. Even at full infeed capacity, no unnecessary heat is gen-
erated in the control cabinet. With intelligent compensation of
capacitive and inductive reactive currents, SINAMICS S120 also
ensures that no unnecessary power losses occur in the power
supply and that no current harmonics occur. This not only pre-
vents detrimental effects on other loads, but it also reduces the
heat generated in the control cabinet.
The SINAMICS S120 components have been developed for
installation in cabinets
They have the following features and characteristics:
•
Ease of handling
•
Simple assembly and wiring
•
Practical connection system, cable routing in accordance with
EMC requirements
•
Uniform design
•
Contiguous assembly
•
Various cooling solutions
Rugged units
The SINAMICS units are equipped as standard with varnished or
partially varnished modules for enhanced robustness.
The coating on the modules protects the sensitive SMD compo-
nents against corrosive gases, chemically active dust and
moisture.
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Overview
(continued)
© Siemens AG 2016