Lenze i950 - Page 89

The line speed signal acts as the feedforward control. The line speed signal is
mulplied by the reciprocal value of the actual diameter.
In the case of the dancer control, the drive is operated in speed control mode. The dancer
posion is recorded and compared to the setpoint posion. If a deviaon is detected, the
dancer control corrects the speed setpoint.
Technology
application
F
M
3~
R
Control signals
F
V
F
V
Rewinder
Unwinder
Motor speed
Actual dancer
position
Line speed
setpoint
Status signals
Fig. 30: Schemac diagram of a winding drive
HALT
STOP
J
M
y y
V
%
Teach ±100%
+
+
Dancer control
Manual
jog
Determine
moment of inertia
Fieldbus
System bus
Encoder
State
machine
Diameter
identification
Diameter
calculation
Acceleration
compensation
Dancer position
e
valuation
Pos. act.
Line velocity
Pos. set.
Line velocity reference
M
n
d
M J
dt
w
= ´
v
d
n
=
´p
1
d ´p
1
d ´p
M
n
Fig. 31: Signal ow of the Winder Dancer TA
In the "Technology applicaon" dialogue of the »EASY Starter« soware, the parameter Appli-
caon
selecon shows which technology applicaon is acve. The technology applicaon can
be modied in this dialogue. 40x4000
Conguring the "Winder Dancer" TA
89