Lenze EVF9383 - Manual (Page 186)

Application examples
Centre winder with internal diameter calculation
3−16
l
EDSVF9383V−EXT EN 2.0
Determining the maximum speed n
max
(C0011)
Through the influence of the dancer position controller (C0472/1) the drive may for a short time reach
a higher speed than n
DminN
. The higher speed is, for instance, required to reach the setpoint dancer
position after starting with D
min
.
C0011
w n
DminN
@
ǒ
100 %
100 % *C0472ń1
Ǔ
Example:
With C0472/1 = 10 % (Lenze setting) and n
DminN
= 4000 rpm, C0011 must be set to, for instance,
4500 rpm.
Adapting the precontrol signal
The FB CONV3 is used to convert the speed signal proportional to the line speed (signal at DFIN−OUT)
into a normalised (analog) precontrol signal.
It is assumed that during steady operation the speed setpoint is only generated by the precontrol
signal and with minimum diameter sent to the motor control without being changed (diameter
evaluation = 100 %). Accordingly, the following formula is to be used to calculate the line speed
(speed at DFIN−OUT) for steady operation with rated line speed and minimum reel diameter:
CONV3−OUT
+
n
DminN
C0011
For the parameterisation of the FB CONV3 this means accordingly:
C0950
C0951
+
15000 rpm
DFIN−OUT [rpm]
@
n
DminN
C0011
Example:
C0950
C0951
+
15000 rpm
3000 rpm
@
4000 rpm
4500 rpm
+ 4.444
E.g.: C0950 = 4444, C0951 = 1000