Expert Functions
5.4 Activating a Second Encoder
Connection of the SINAMICS S120 to the Technology CPU
Product Information, 09/2011, A5E00480378-04
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Second encoder as master value for synchronism functions
In a system, two independently controlled drives are to be synchronized using a gearbox or
curve synchronization.
In this case, for example, the first drive, controlled by an external drive system, transports a
wooden beam, a plastic pipe, etc.
The second drive, controlled by the technology CPU and a SINAMICS S120, moves a flying
saw to cut the material synchronous to the material transport.
A measuring roller mounted on the material transport records the traversed path and the
speed of the material. The measuring roller is connected to an external encoder that is
connected to the SINAMICS S120.
① Measuring roller
② External encoder
③ Drive for synchronous motion
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