72
Dancer control with winding diameter
compensation for wiredrawing machine
720
Maximum winding diameter 1
2mm
400mm
Especially, initial diameters (minimum value at winding shaft)
should be input accurately.
721
Minimum winding diameter 1
1mm
280mm
756
First acceleration time for main speed
15s
0.5s
Less time than acceleration/deceleration of main speed setting
(terminal 2 to 5) is set.
(In this case, cushion time is already included by high-order
system. 0.5s is set as EMI measure.)
757
First deceleration time for main speed
15s
0.5s
763
Line speed input selection
0
0
No line speed input. (Line speed is calculated from the main
speed.)
771
r-r' limit value (diameter)
1mm
0.1mm
Longer value than the increment in winding diameter calculation
at
(Pr. 707)
Sampling time for winding diameter calculation
is set.
773
Gear ratio numerator (driver side)
1
10
Gear ratio of unwinding shaft is set.
Should be set accurately.
774
Gear ratio denominator (follower side)
1
12
777
Speed control proportional gain 1
9999
100%
Response level is improved by adjusting the speed control
proportional gain according to the winding diameter. Speed
control proportional gain is adjusted with maximum diameter
(Pr.
780)
and minimum diameter
(Pr. 777)
.
Pr. 778
=
/5 +
Pr. 777
,
Pr. 779
= 8
/15 +
Pr. 777
(
=
Pr. 780
-
Pr. 777
)
778
Speed control proportional gain 2
9999
140%
779
Speed control proportional gain 3
9999
200%
780
Speed control proportional gain 4
9999
300%
781
Winding diameter storage selection
0
1
Input of diameter clear signal X55 is necessary to assign to a
terminal when winding diameter storage is enabled.
Winding diameter (EEPROM write) is stored when power is shut
off or X83 is OFF.
It is not stored to EEPROM when RES signal is ON. Should not
input RES unless inverter alarm or fault occurs.
When RES input is necessary for an inverter alarm or in such
case, turn X83 OFF before RES input, then input X83 again so
that stored winding diameter can be used.
783
Operation time with stored winding
diameter
0s
0.01s
Setting is always necessary to activate winding diameter storage.
(If not set, stored data is not reflected.)
792
Accumulated amount
160mm
9999
Without initial winding diameter calculation
800
Control method selection
20
0
0: Vector control (speed control)
821
Speed control integral time 1
0.333s
0s
When dancer control is activated, integral time is set invalid so
that the inverter operates as a proportional amplifier.
822
Speed setting filter 1
9999
0.5s
Setting when EMI is superpositioned in analog signal.
862
Notch filter time constant
0
20
Setting to reduce whining sound at a motor stop.
863
Notch filter depth
0
2
903
Terminal 2 frequency setting gain
60Hz/
10V
90.95Hz/
100%
V
max
=2000m/min, 10V input, D
min
=280mm, gear ratio=1/1.2
Set according to the rotation speed at V
max,
D
min
and the speed
command at the time (maximum voltage command for terminal 2
to 5.)
= V
max
/ (
D
min
gear ratio) = 2000
10
3
/(
280
1/1.2)/30
90.95Hz
Parameter
Name
Initial
Value
Setting
Description
