
AV-300i Version 2 User’s Guide
—————— Function Description ——————
Ch.1
153
The Diameter Calculation Block is shown in the figure below.
PID MtlPI sel mon
DiaClc start src
Diacal PIO
Max deviation
Positioning spd
Gear box ratio
Dancer constant
Diameter
DCDelta error
DCDalta pos
Diameter calc Settings
Max deviation
Position of maximum mechanical sealing for the dancer
Positioning spd
Positioning speed
Gear box ratio
Reduction ratio between motor and winder (<=1)
Dancer constant
Measurement of the total material accumulation
Minimum diameter
Value of the winder minimum diameter
DiaClc start src
Source of the start Diameter Calculation command
Diameter calc
Start ?
Diameter calc
Press I key
Diameter calc Results
Diameter
Calculated diameter
Diacal PIO
PI initialization value
DCDelta error
Dancer movement
DCDelta pos
Winder movement (encoder pulses)
Dancer constant = (
∆
x
x
2) 2
L
M
Gear box ratio
Dancer constant = (
∆
L x
x
2) 4
Dancer
Winder/Unwinder
∆
L
electrical 0
Central position
of working
Dancer
Upper limit
switch = +1000 count
Lower limit
switch = -1000 count
∆
L
electrical 0
Central position
of working
Upper limit
switch = +1000 count
Lower limit
switch = -1000 count
Two pitches dancer
One pitch dancer
Figure 1.15.7.1: Diameter Calculation
1.15.7.1 Dancer Constant Measurement
With the dancer placed in a lower limit switch position, perform the self-tuning of the analog input connected to PID fbk src.
Set the Drive keypad on the PID fbk mon parameter.
Measure and multiply by 2 the distance in mm between the lower mechanical limit switch and the dancer
position, where the PID fbk mon parameter has a 0 value (electric 0 position).
Multiply the calculated value by 2 if the dancer is made of a single pitch, by 4 if it is made of two pitches etc. etc.
as per the above figure.
Содержание AV-300i
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