Lenze EVF9383 - Manual (Page 185)

Application examples
Centre winder with internal diameter calculation
3−15
l
EDSVF9383V−EXT EN 2.0
The following values are required for parameter setting:
l Rated line speed (V
LN
) selected via the digital frequency input X9.
l Winding drive speed with rated line speed and minimum reel diameter (n
Dmin
).
– The winding drive speed results from the line speed V
L
and the reciprocal of the reel
diameter:
n
max
n ~
n
D
n
Dmax
n
Dmin
D
min
D
max
V
D
L
Fig. 3−10 Speed behaviour of the winding drive with reference to the reel diameter
d
D
max
D
min
Reel diameter
Maximum reel diameter
Minimum reel diameter n
n
Dmax
n
Dmin
V
L
Winding drive speed
Winding drive speed with maximum reel diameter
Winding drive speed with minimum reel diameter
Line speed
Example
For a clearer representation of the parameter setting in this application example, the following values
are assumed for the calculations:
l At rated line speed (V
LN
) the winding drive receives a digital frequency signal from which a
speed of 3000 rpm is calculated (DFIN−OUT).
l The winding drive speed with minimum reel diameter and rated line speed V
LN
(n
DminN
) is
4000 rpm (MCTRL−PHI−ACT).