Siemens TV Converter Box 611 User Manual

 

System integration 

 

7.1 System requirements 

 

 

Note 
In systems where direct drives are used on controlled infeeds, electrical oscillations can 

occur with respect to ground potential. These oscillations are, among other things, influenced 

by:  
 

The lengths of the cables 

 

The rating of the infeed/regenerative feedback module 

 

The number of axes 

 

The size of the motor 

 

The winding design of the motor 

 

The type of line supply 

 

The place of installation 

The oscillations lead to increased voltage loads and may damage the main insulation! We 

thus recommend using an HFD commutating reactor with damping resistance for damping 

the oscillations. For specific details, refer to the documentation of the drive system being 

used or contact your local Siemens office. 

 

Accuracy 

The accuracy of a direct drive with torque motor is governed by the: 
●  Mechanical design of the machine 
●  Control technology used 
●  Resolution and measuring accuracy of the encoder 
 

Mechanics 

The potential machining accuracy of a drive system with torque motor is influenced by the: 
●  Mechanical rigidity and noise immunity of the drive system 
●  Running smoothness 
The running smoothness in the axial and radial direction depends on the bearing version and 

its accuracy. The requirements here can be fulfilled by means of a suitable axes design. 
 

Control quality 

The control quality of a direct drive with torque motor is governed by the: 
●  Rigidity of the drive system (dynamic quality of the housing and machine construction, 

bearing, encoder installation) 

●  The precision when mounting and adjusting the encoder system 

1FW6 Built-in torque motors 
Configuration Manual, 05/2009, 6SN1197-0AD00-0BP7 

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