Lenze EVF9383 - Manual (Page 187)

Application examples
Centre winder with internal diameter calculation
3−17
l
EDSVF9383V−EXT EN 2.0
Diameter evaluation
The FB ARIT1 is used to multiply the precontrol signal by the reciprocal of the reel diameter.
The diameter calculator (DCALC1) calculates the reel diameter from the line speed (speed at
DFIN−OUT) and the motor speed and then calculates the reciprocal (C1308 = 1).
For a correct diameter calculation, enter the following values:
l Under C1300: Motor speed with maximum diameter
l Under C1301: Corresponding line speed (speed at DFIN−OUT)
l Under C1304: Maximum diameter
l Under C1309: Reference diameter for the calculation of the reciprocal
Example:
With a diameter ratio q = 5 (e.g. D
min
= 100 mm, D
max
= 500 mm), this means in this case:
l C1300 = 3000 rpm
l C1301
+
n
DminN
q
+ 800 rpm
l C1304 = 500 mm
l C1309 = 100 mm (enter the value used as a basis for determining n
DminN
)
Limit values for the reel diameter
Under C1305 and C1306 you can select limit values to limit incorrect diameter values during the start
and stop phases to permissible values.
Example:
l C1305 = 100 mm
l C1306 = 500 mm