Mitsubishi Electric A800 Plus Series Function Manual page 130

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.
Tension command value
Tension command
Pr.1295
Pr.1289
Pr.1297
0 Minimum
winding
diameter
• 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.
Tension command value
Tension command
Pr.1295
Pr.1293/Pr.1297
Pr.1289
Pr.1291
Minimum
winding diameter
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%.
FTP (N) × Present winding diameter (m)
T [%] =
2 × Rated motor torque (N·m)
Taper control tension command
P.1290 P.1292 P.1294 Pr.1296
Taper control tension command
Pr.1294 Pr.1290 Pr.1292 Pr.1296
winding diameter
× Gear ratio
× 100
TENSION SENSORLESS TORQUE CONTROL
Tension sensorless torque control details
Pr.1288 = 0 (mm)
Pr.1290 = 150 (mm)
Pr.1292 = 250 (mm)
Pr.1294 = 350 (mm)
Pr.1296 = 420 (mm)
Minimum winding diameter = 50 (mm)
Maximum winding diameter = 500 (mm)
Winding diameter
Maximum
winding
diameter
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)
Winding diameter
Pr.1288
Maximum
Pr.1243
Gear ratio =
Pr.1244
Pr.1289 = 20%
Pr.1291 = 0%
Pr.1293 = 0%
Pr.1295 = 10%
Pr.1297 = 30%
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