Description   
1.1 System overview 
  SIMOTION D4x5 
14  Manual, 02/2012 
A SIMOTION D axis grouping generally consists of the following elements: 
●  SIMOTION D (Control Unit) (1) 
This unit contains the programmable runtime system of SIMOTION and the drive software 
of SINAMICS S120. In principle, SIMOTION D is capable of controlling multiple 
axes/drives.  
●  One SINAMICS infeed (line module) (2) 
This module generates a DC link from the supply system. 
●  SINAMICS power units (motor modules) (3) 
These modules are used to control motors. 
It is also possible to operate SINAMICS PM340 power modules with the SINAMICS 
Control Unit adapter (CUA). A separate infeed is then unnecessary. 
●  DRIVE-CLiQ components (4) 
In SINAMICS S120 / SIMOTION D, the individual components of the drive system 
communicate with each other via DRIVE-CLiQ. In addition to power components, 
encoder systems and special DRIVE-CLiQ I/O devices can also be linked via 
DRIVE-CLiQ. 
Extension of the drive computing performance 
The motion control performance of a SIMOTION D4x5 can be utilized in full by expanding 
the computing performance at the drive in two different ways: 
●  SINAMICS S110/S120 Control Units complete with further SINAMICS S110/120 drive 
modules can be connected via PROFIBUS or PROFINET. 
●  With SIMOTION D435 and D445/D445-1, the CX32 controller extension can be 
connected via DRIVE-CLiQ. This module is extremely compact and can control up to 
six servo, four vector or eight 
V/f
 axes. 
Software components 
The basic functionality of SIMOTION D is supplied on a CompactFlash card containing the 
following:   
The SIMOTION runtime system with the following functions: 
●  User-programmable runtime system (IEC 61131) 
●  Various runtime levels (tasks) 
●  PLC and arithmetic functionality 
●  Motion control functions 
●  Communication functions 
The SINAMICS S120 drive control with the following functions: 
●  Current and torque control 
●  Speed control 
●  Closed-loop infeed