Lenze i950

7.7 Diameter calculaon
Diameter calculaon from line speed and winding speed
Calculaon of the diameter
=
´
L
act
W
v
d
n
p
d
act
mm Current diameter
v
L
mm/s Line velocity
n
W
Revoluons/s Winder speed
The speed and velocity are calculated using only mean values, not momentary values. The
number of revoluons is determined by the parameter Number of revoluons for standard
diame
ter calculaon. 40x5051:070
For normal operaon, the angle of rotaon of the winder, via which the mean value is deter-
mined, is given by the seng in the parameter Number of revoluons for standard diameter
calculaon. Each me this angle has been passed through, the diameter is recalculated.
For process-related reasons, it may somemes be necessary to switch to shorter calculaon
instances due to e.g. thick materials or misshapen reels. The shorter distance is dened in the
parameter Number of
revoluons for fast diameter calculaon. 40x5051:071
By
seng bit 23 = TRUE, the calculaon interval is switched over to the rapid calculaon
mode with the shorter distance. 40x5050:010 Bit
23
The shorter distance is automacally acvated by loading a start diameter. The state is main-
tained unl a new diameter is calculated.
The funcon is required when the real diameter of the reel diers from the loaded diameter.
The winding sha will only rotate with the wrong diameter over a short distance. Aer the
diameter calculaon, a corrected diameter will be available.
The parameters Min. reel diameter and Max. reel diameter must be dened as basic parame-
ters.
•
Min. r
eel diameter 40x5051:016
•
Max. reel diameter 40x5051:017
These two values act as limit values. The value set in the parameter Ma
x. reel diameter simul-
taneously acts as the reference value for the percentage diameter specicaon. 40x5051:017
Conguring the "Winder Dancer" TA
Diame
ter calculaon
117