Dcc Axial Winder - Siemens SINAMICS S120 Function Manual

11.6

DCC axial winder

Description
The "DCC axial winder" functionality covers a wide variety of winder applications.
With a suitable setup, the function provides a winder or unwinder for a wide variety of
applications, such as film production plants, printing machines, coating plants, coil winders
for wire-drawing machines or textile machines.
An axial winder solution usually comprises a winder drive, a continuous web and possibly
sensors. The axial winder serves to wind or unwind a continuous web with a defined tension.
The winder diameter will change during the winding process. The product thickness
increases or decreases during the winding or unwinding process. The drive system
calculates the current diameter on the basis of system variables and influences the speed or
torque, depending on the application, so that the tension and velocity of the web is
maintained according to specifications. This requires the current velocity of the web and the
rotational speed of the winder axis to be known.
Features
● Different winding and control methods can be applied, e.g. direct closed-loop tension
● Closed-loop control can be implemented through "Tension controller acting on torque
● Adaptation of tension controller and speed controller gain based on diameter or
● Diameter-based winding tightness diagram
● Diameter calculation
● Acceleration-based torque pre-control
● Flexible sensor evaluation (e.g. dancer roll, load cell)
Function blocks
The "DCC axial winder" function involves the following DCBs (Drive Control Blocks), i.e.
function blocks for drive control:
Note
Detailed information on the function blocks is contained in the "SINAMICS SIMOTION
Function Manual DCC Block Description" as well as in the "SINAMICS SIMOTION
Programming Manual DCC Editor".
Drive functions
Function Manual, (FH1), 10/2008, 6SL3097-2AB00-0BP5
control through
speed correction or torque limiting and indirect closed-loop tension control
limits" or
"Tension controller acting on speed setpoint"
inertia
Note
Documentation for a standard application for the DCC axial winder is available on
demand from your responsible SIEMENS distribution partner.
Applications
11.6 DCC axial winder
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