Dancer Constant Measurement; Figure 1.15.7.1: Diameter Calculation - GE AV-300i User Manual

The Diameter Calculation Block is shown in the figure below.
DiaClc start src
PID MtlPI sel mon
Diameter calc Settings
Max deviation
Positioning spd
Gear box ratio
Dancer constant
Minimum diameter
DiaClc start src
Diameter calc Start ?
Diameter calc Press I key
Diameter calc Results
Diameter
Diacal PIO
DCDelta error
DCDelta pos
Dancer
Winder/Unwinder
Gear box ratio
One pitch dancer
M
Dancer constant = ( ∆ x

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.
AV-300i Version 2 User's Guide
Max deviation
Positioning spd
Gear box ratio
Dancer constant
Diameter
DCDelta error
Position of maximum mechanical sealing for the dancer
Positioning speed
Reduction ratio between motor and winder (<=1)
Measurement of the total material accumulation
Value of the winder minimum diameter
Source of the start Diameter Calculation command
Calculated diameter
PI initialization value
Dancer movement
Winder movement (encoder pulses)
Upper limit
switch = +1000 count
electrical 0
Central position
∆ L
of working
Lower limit
switch = -1000 count
L 2) 2 x

Figure 1.15.7.1: Diameter Calculation

—————— Function Description ——————
Diacal PIO
DCDalta pos
Upper limit
Dancer
switch = +1000 count
electrical 0
Central position
∆ L
of working
Lower limit
switch = -1000 count
Two pitches dancer
Dancer constant = ( ∆ L x
2) 4 x
Ch.1
153