Siemens SINAMICS Series Operating Instructions Manual page 40

Description
● Drive Control Chart (DCC)
DCC is available for applications requiring a more complex method of controlling the drive
system which cannot be accomplished using the free function blocks. DCC makes it
possible for one of the interconnected elementary function blocks to generate a graphical
depiction of an existing function diagram and load it to the SINAMICS DC MASTER. The
function diagram may contain up to 750 function blocks. It is possible to configure the
time slices in which the individual parts of the function diagram are processed.
Note:
A DCC function diagram can be loaded not only to the CUD in the left-hand slot, but also
to an optional second CUD in the right-hand slot.
The automatic speed control processes are computed on the CUD in the left-hand slot,
This means that only a restricted amount of computing capacity is available for a DCC
function block diagram. In other words, either only a few function blocks can be
computed, or computing can only be carried out in a slow time slice.
The CUD in the right-hand slot is essentially available (in addition to the operating
system) for one DCC function diagram only.
● Technology controller
Simple closed-loop control functions can be implemented with the technology controller,
e.g.:
– Liquid level control
– Temperature control
– Dancer roll position control
– Pressure control
– Flow control
– Simple control without higher-level control
– Tension control
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SINAMICS DCM DC Converter
Operating Instructions, 12/2018, A5E34763375A