Efficient Networks Siemens Sinamics S120 - Manual (Page 283)

Function modules
7.10 DCC axial winder
Drive Functions
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
283
● Adaptation of tension controller and speed controller gain based on diameter or
inertia
● Diameter-based winding tightness diagram
● Diameter calculation
● Acceleration-based torque pre-control
● Flexible sensor evaluation (e.g. dancer roll, load cell)
Note
Documentation for a standard application for the DCC axial winder is available on
demand from your responsible SIEMENS distribution partner.
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".
1. TTCU block: Winding hardness diagram
The block is applied for defining the tension setpoint as a function of the current winder
diameter. The setpoint is adjusted according to a selectable characteristic curve.
2. DCA block: Diameter calculator:
The DCA (Diameter Calculator) is used to determine the current diameter of an axial
winder based on the path velocity and the motor speed. The calculated diameter is
checked for plausibility.
3. INCO block: Dynamic calculation of the moment of inertia for torque pre-control and Kp
adaptation of the speed controller
(see figure "Axial winder setup", abbreviations refer to block description).
The block calculates the mass moment of inertia of an axial winder, referred to the motor
side. In addition to the diameter (from DCA), the block also contains information on the
geometry and material properties of the winder and the winding product.
The static mass moment of inertia referred to the motor side is passed to the DCC block
via the parameter r1493. The result is fed back to the basic system via the scaling
parameter p1497 (referred to the static moment of inertia).