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