Tension sensorless torque control details
TENSION SENSORLESS TORQUE CONTROL
129
5
Data table profile setting example (Pr.1288 to Pr.1297)
• When the data table winding diameter is 0 mm, the taper ratio when the winding diameter is 0 mm is calculated as the
corresponding data table taper ratio.
• When the winding diameter exceeds the maximum data table diameter, the taper ratio is fixed.
• The setting example is as follows.
• The pairs of parameters (
Pr.1288
/
Pr.1289
), (
Pr.1290
/
Pr.1291
), (
Pr.1292
/
Pr.1293
), (
Pr.1294
/
Pr.1295
), and (
Pr.1296
/
Pr.1297
) are arranged internally in the inverter from the pair with the smallest winding diameter to the one with the largest
to form a data table profile.
NOTE
• If the same winding diameter is set in two or more of the
Pr.1288
,
Pr.1290
,
Pr.1292
,
Pr.1294
, and
Pr.1296
settings, the data
table set in the parameter with the smallest parameter number is valid.
• When "9999" is set in the data table winding diameter setting, the corresponding taper ratio setting is invalid.
Tension sensorless torque control (torque command calculation)
• Calculate the torque command T from the current winding diameter value, motor constant torque, gear ratio for the tension
command FTP of the taper control. The torque command value (T) is limited within the range of +400%.
Pr.1288
= 0 (mm)
Pr.1289
= 20%
Pr.1290
= 150 (mm)
Pr.1291
= 0%
Pr.1292
= 250 (mm)
Pr.1293
= 0%
Pr.1294
= 350 (mm)
Pr.1295
= 10%
Pr.1296
= 420 (mm)
Pr.1297
= 30%
Minimum winding diameter = 50 (mm)
Maximum winding diameter = 500 (mm)
Tension command value
Winding diameter
Minimum
winding
diameter
Maximum
winding
diameter
Taper control tension command
Tension command
Pr.1289
P.1290
0
Pr.1295
P.1292
Pr.1296
P.1294
Pr.1297
Pr.1288
= 550 (mm)
Pr.1289
= 50%
Pr.1290
= 200 (mm)
Pr.1291
= 60%
Pr.1292
= 300 (mm)
Pr.1293
= 40%
Pr.1294
= 100 (mm)
Pr.1295
= 10%
Pr.1296
= 400 (mm)
Pr.1297
= 40%
Minimum winding diameter = 50 (mm)
Maximum winding diameter = 500 (mm)
Tension command value
Winding diameter
Minimum
winding diameter
Maximum
winding diameter
Taper control tension command
Tension command
Pr.1296
Pr.1292
Pr.1290
Pr.1295
Pr.1294
Pr.1288
Pr.1291
Pr.1289
Pr.1293
/
Pr.1297
× 100
FTP (N)
×
Present winding diameter (m)
×
Gear ratio
T [%] =
2
×
Rated motor torque (N·m)
Pr.1244
Pr.1243
Gear ratio
=
Summary of Contents for A800 Plus Series
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