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Winding diameter compensation
function
(3)
Initial winding diameter calculation dead zone (Pr. 791), Initial winding diameter calculation dead
zone 2 (Pr. 712)
When performing initial winding diameter calculation, initial winding diameter calculation dead zone for dancer position
can be set.
POINT
To set a dead zone, adjust Pr. 792 Accumulated amount for the amount of dead zone to accurately calculate the winding
diameter.
(4)
Speed control proportion/integral time at a start (Pr. 793, Pr. 794)
When performing initial winding diameter calculation under vector control or Real sensorless vector control, inverter's
speed control proportional gain and integral time during winding diameter calculation can be set separately.
After winding diameter calculation is completed, normal speed control gain is applied.
Parameter
Number
793
Speed control P gain at a start
794
Speed control integral time at start
dancer position
Dancer roll
position
Start Signal
(STF/STR)
Speed control
proportional gain
Speed control
Integral time
Winding diameter
calculation
40
Target position
Performing winding
diameter calculation in
this range.
Lower limit position
Name
Target
Dead zone 2*
Dead zone 1
Pr. 793
(Speed control P gain at start)
Pr. 794
(Speed control integral time at start)
Winding diameter
Initial winding diameter calculation
Dead zone 2
Dead zone band = (Target position - Start position)
Using Pr. 791 setting when Pr. 712 = 9999
Dead zone
Dead zone band = (Target position - Start position)
Setting Range
Increments
0 to 1000%
0 to 20s
* When the dead zone is smaller, fluctuation of
the dancer roll becomes less at operation shift
from initial winding diameter calculation to
dancer control.
ON
Pr. 820 Speed control proportional gain
Pr. 821 Speed control integral time
Normal dancer control
Pr. 712/100
Pr. 791/100
Initial Value
1%
60%
0.001s
2s
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