System overview
2.2 Area of application
Cabinet Modules NEMA
Manual, 04/2014, A5E03586450A
27
The modular SINAMICS S120 Cabinet Modules drive system is used to coordinate multiple
motors in a multi-axis drive system.
Typical examples include:
● Paper-making machines
● Roller mills
● Hoisting gear
● Test stands
Cabinet Modules can also be used to implement high-power single drives (parallel
connection).
The outstanding system features of the SINAMICS S120 Cabinet Modules provide plant
operators with the following advantages:
● Process optimization with minimal effort:
– A standard PROFIBUS or PROFINET interface and various analog and digital
interfaces allow them to be easily integrated into automation solutions.
– Vector control ensures that they fulfill the most exacting requirements regarding the
accuracy and dynamic response of drives.
● High level of reliability and availability:
– Individual modules and power components can be replaced quickly and easily, which
ensures a higher level of plant availability.
● Energy savings during operation:
– The motor-side inverters are coupled via the common DC link and allow energy to be
exchanged between motoring and regenerative motors. This means that energy is
saved, there is less load on the line supply and line harmonics are reduced.
– The line supply is generally only dimensioned for the maximum motor power required /
maximum motor current and not the sum of the energy requirements of the motor
modules connected to the DC link. For example, for conveyor systems or engine test
stands with motor modules that are simultaneously in the motoring and regenerative
mode, this frequently results in smaller line supplies.
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