Mitsubishi Electric A800 Plus Series Function Manual page 203

Application examples
Pr. Parameter name
369 Number of encoder pulses
Line speed command
393 acceleration/deceleration
reference
First acceleration time for line
394
speed command
First deceleration time for line
395
speed command
430 Dancer tension setting
Line speed command for
622
∗1
starting
Speed control proportional gain
641
∗1
1
Speed control proportional gain
642
∗1
2
Speed control proportional gain
643
∗1
3
Speed control proportional gain
644
∗1
4
Winding diameter storage
645
selection
Operation time with stored
647
winding diameter
800 Control method selection
821 Speed control integral time 1
868 Terminal 1 function assignment
C2 Terminal 2 frequency setting
(902) bias frequency
∗1∗2
C3 Terminal 2 frequency setting
(902) bias
∗1∗2
C6 Terminal 4 frequency setting
(904) bias
∗1∗2
C7 Terminal 4 frequency setting
(905) gain
∗1∗2
1003 Notch filter frequency
∗1
1004 Notch filter depth
∗1
Tension PI gain tuning start/
1219
status
1222 Target amplitude
∗1
1230 Winding/unwinding selection
1235 Maximum winding diameter 1
1236 Minimum winding diameter 1
Gear ratio numerator (follower
1243
side)
Gear ratio denominator (driver
1244
side)
Sampling time for winding
1245
∗1
diameter calculation
202
APPENDIX
Initial Setting
value value
1024 2048
1000 m/min 100 m/min
Setting must be lower than the acceleration/deceleration rate of
15 s 0 s
the line speed command (input via terminals 2 and 5).
(In this example, setting these parameters are not required as
15 s 0 s
the cushion time is considered for the line speed command.)
100% 100%
Setting this parameter avoids intermittent operation after the
0 m/min 0 m/min
initial roll diameter calculation is completed.
9999 60%
By adjusting the speed control proportional gain, response
improvement is achievable according to the roll diameter.
9999 80%
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.
9999 120%
Pr.642 = α/5 + Pr.641
Pr.643 = 8 × α/15 + Pr.641 (α = Pr.644 - Pr.641)
9999 200%
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
0 1 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.
Be sure to set this parameter when storing roll diameters is set to
0 s 0.01 s enabled (the value of the stored roll diameter is not applied to
any setting if this parameter is not set).
20 0 0: Vector control (speed control)
Set 0 seconds to disable the integral so that the inverter acts as a
0.333 s 0 s
proportional amplifier.
9999: Function disabled. (Setting "9999" is required to prevent
0 9999 compensation for the dancer signal voltage input from being
added when the X114 signal is OFF.)
0 Hz 0 Hz
Use these parameters to correct the offset of the line speed
commands.
0% 3%
20% 0% Use this parameter to correct the taper ratio setting.
100% 40%
Use this parameter to decrease whining sound of a motor at a
0 100 Hz
stop.
0 2
0 1 1: Tension PI gain tuning starts.
Set the target amplitude for the limit cycle. Start tuning with a
9999 1% small value and gradually increase the value while making sure
that tuning causes no problem.
0 0 0:Winding, 1: Unwinding
2 mm 1000 mm
1 mm 100 mm
1 1
Set the gear ratio of the unwinding roller (shaft) with high
accuracy.
1 3
Setting is recommended when the results of the roll diameter
9999 0.1 s
calculation change significantly.
Remarks