Taper Function - Mitsubishi Electric A800 Plus Series Function Manual

Tension sensorless torque control details
5.5.4

Taper function

The taper function reduces the tension when the winding diameter increases in order to prevent the roll from getting too tight.
From a tension value commanded for taper control and the roll diameter determined by the winding diameter calculation, a
torque command value required for the tension control is calculated.
Pr. Name
829 Taper ratio setting input filter
R504 time constant
1243 Gear ratio numerator
R600 (follower side)
1244 Gear ratio denominator
R601 (driver side)
1282 Tension command cushion
R320 time
1283 Cushion time reference
R321 tension
1284
Taper mode selection
R500
1285 Taper setting analog input
R501 selection
1286 Winding diameter at taper
R503 start
1287
Taper ratio setting
R502
1288
Data table winding diameter 1
R510
1289
Data table taper ratio 1
R511
1290
Data table winding diameter 2
R512
1291
Data table taper ratio 2
R513
1292
Data table winding diameter 3
R514
1293
Data table taper ratio 3
R515
1294
Data table winding diameter 4
R516
1295
Data table taper ratio 4
R517
1296
Data table winding diameter 5
R518
1297
Data table taper ratio 5
R519
∗1
The setting varies with the Pr.1401 setting.
124
TENSION SENSORLESS TORQUE CONTROL
Setting
Initial value
range
0.02 s 0 to 5 s
1 1 to 65534
1 1 to 65534
0 s 0 to 360 s
100 N 0.01 to 100 N
∗1
0
1
0 2
3
4
3
4
9999 5
6
9999
0 to 6553 mm
9999
9999
0 to 100%
0%
9999
0 to 6553 mm,
9999
9999
0% 0 to 100%
0 to 6553 mm,
9999
9999
0% 0 to 100%
0 to 6553 mm,
9999
9999
0% 0 to 100%
0 to 6553 mm,
9999
9999
0% 0 to 100%
0 to 6553 mm,
9999
9999
0% 0 to 100%
Description
Set the time constant of primary delay filter for analog
input at taper ratio setting input using the analog input.
Set gear ratio when the motor shaft has a reduction
gear.
Set the time until the tension command value reaches
the reference tension command.
Set the reference tension command value of the
∗1
tension command cushion time.
No taper
Linear taper profile
Hyperbolic taper profile 1
Hyperbolic taper profile 2
Data table profile
The taper ratio is input through terminal 2.
The taper ratio is input through terminal 4.
The taper ratio is input through terminal 1.
The taper ratio is input through terminal 6 (FR-A8AZ).
No function
Set the winding diameter to start taper control.
Taper control is started at the minimum winding
diameter.
Set the taper ratio.
The taper ratio is set through the analog input terminal.
Set the data table profile for the taper mode selection.
9999: The corresponding taper ratio is invalid.