Motor Modules; Booksize Base Cabinets With Booksize Cabinet Kits; Chassis Cabinets; Auxiliary Power Supply Modules - Siemens SINAMICS S120 Equipment Manual

System overview

2.6 Motor Modules

2.6 Motor Modules
There are two different types of Motor Module available with the SINAMICS S120 Cabinet
Modules drive system.
2.6.1

Booksize Base Cabinets with Booksize Cabinet Kits

Motor Modules at the low end of the power range (1.6 to 107 kW) can be configured as
Booksize Cabinet Kits installed in Booksize Base Cabinets. Booksize Cabinet Kits are also
available as Double Motor Modules in the 1.6 to 9.7 kW power range.
2.6.2

Chassis Cabinets

Each Chassis Cabinet is fitted with one SINAMICS S120 Motor Module in chassis format
and covers the 75 to 1200 kW power range.
Higher powers can be achieved by connecting the Motor Modules in parallel.
2.7

Auxiliary Power Supply Modules

Auxiliary Power Supply Modules supply power to the auxiliary voltage busbar system of the
SINAMICS S120 Cabinet Modules.
The fans of the SINAMICS S120 devices installed in the Cabinet Modules are one of the
devices connected to this auxiliary voltage busbar system. In addition, the auxiliary voltage
busbar system supplies the electronics modules with external 24 V DC. This is required
when the DC link is not charged in order, for example, to maintain PROFIBUS
communication.
2.8

System structure

Line Modules are coupled with the various Motor Modules by means of prefabricated DC
busbar sets with different current-conducting capacities.
An auxiliary voltage busbar system spanning the individual Cabinet Modules supplies the
required auxiliary voltages for the equipment fans and the 24 V DC loads.
Communication between the Control Unit, Line Modules and Motor Modules, and other
active SINAMICS components takes place via DRIVE-CLiQ connections.
DRIVE-CLiQ is an internal serial interface of the drive that enables fast and easy
configuration of the complete drive line-up with prefabricated cables in varying lengths.
As an option, Cabinet Modules can be delivered in preconfigured transport units with a total
length of up to 2,400 mm each. This option is recommended in particular for Line Modules
together with Line Connection Modules since, in this case, the Line Connection Module must
be equipped with a pre-charging DC link or line reactors (depending on the type of Line
Module), in addition to the electrical interface (mounted on a busbar).
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S120 Cabinet Modules Equipment Manual
Manual, (GH5), 10/2008, A5E00427098A