Application examples
202
369
Number of encoder pulses
1024
2048
393
Line speed command
acceleration/deceleration
reference
1000 m/min
100 m/min
394
First acceleration time for line
speed command
15 s
0 s
Setting must be lower than the acceleration/deceleration rate of
the line speed command (input via terminals 2 and 5).
(In this example, setting these parameters are not required as
the cushion time is considered for the line speed command.)
395
First deceleration time for line
speed command
15 s
0 s
430
Dancer tension setting
100%
100%
622
Line speed command for
starting
0 m/min
0 m/min
Setting this parameter avoids intermittent operation after the
initial roll diameter calculation is completed.
641
Speed control proportional gain
1
9999
60%
By adjusting the speed control proportional gain, response
improvement is achievable according to the roll diameter.
Pr.644
(proportional gain for the maximum roll diameter) and
Pr.641
(proportional gain for the minimum roll diameter) are used
for determination of the setting of
Pr.642
and
Pr.643
.
Pr.642
=
α
/5 +
Pr.641
Pr.643
= 8 ×
α
/15 +
Pr.641
(
α
=
Pr.644
-
Pr.641
)
642
Speed control proportional gain
2
9999
80%
643
Speed control proportional gain
3
9999
120%
644
Speed control proportional gain
4
9999
200%
645
Winding diameter storage
selection
0
1
When "1" (storing roll diameters enabled) is set, the input of the
Stored winding diameter clear (X109) signal is required.
The storing of roll diameters (writing in EEPROM) is conducted
when the inverter power or the X114 signal turns OFF.
Note that the storing is not conducted when the RES signal is
input. Therefore, avoid inputting the RES signal frequently
without storing the roll diameters.
For the input of the RES signal by necessity such as a reset of
the inverter fault, it is recommended to configure the sequence
that the RES signal will be input after the X114 signal turns OFF
and before the X114 signal turns ON again.
647
Operation time with stored
winding diameter
0 s
0.01 s
Be sure to set this parameter when storing roll diameters is set to
enabled (the value of the stored roll diameter is not applied to
any setting if this parameter is not set).
800
Control method selection
20
0
0: Vector control (speed control)
821
Speed control integral time 1
0.333 s
0 s
Set 0 seconds to disable the integral so that the inverter acts as a
proportional amplifier.
868
Terminal 1 function assignment
0
9999
9999: Function disabled. (Setting "9999" is required to prevent
compensation for the dancer signal voltage input from being
added when the X114 signal is OFF.)
C2
(902)
Terminal 2 frequency setting
bias frequency
0 Hz
0 Hz
Use these parameters to correct the offset of the line speed
commands.
C3
(902)
Terminal 2 frequency setting
bias
0%
3%
C6
(904)
Terminal 4 frequency setting
bias
20%
0%
Use this parameter to correct the taper ratio setting.
C7
(905)
Terminal 4 frequency setting
gain
100%
40%
Notch filter frequency
0
100 Hz
Use this parameter to decrease whining sound of a motor at a
stop.
Notch filter depth
0
2
1219
Tension PI gain tuning start/
status
0
1
1: Tension PI gain tuning starts.
Target amplitude
9999
1%
Set the target amplitude for the limit cycle. Start tuning with a
small value and gradually increase the value while making sure
that tuning causes no problem.
1230
Winding/unwinding selection
0
0
0:Winding, 1: Unwinding
1235
Maximum winding diameter 1
2 mm
1000 mm
1236
Minimum winding diameter 1
1 mm
100 mm
1243
Gear ratio numerator (follower
side)
1
1
Set the gear ratio of the unwinding roller (shaft) with high
accuracy.
1244
Gear ratio denominator (driver
side)
1
3
Sampling time for winding
diameter calculation
9999
0.1 s
Setting is recommended when the results of the roll diameter
calculation change significantly.
Pr.
Parameter name
Initial
value
Setting
value
Remarks
Summary of Contents for A800 Plus Series
Page 240: ...239 MEMO ...
