Mitsubishi Electric A800 Plus Series Function Manual page 127

Tension sensorless torque control details
Taper ratio setting input adjustment (Pr.829, Pr.902 to Pr.905, Pr.917,
Pr.918, Pr.926, Pr.927)
• When the taper ratio setting is input using analog input, use the following parameters to calibrate the input value of each
terminal. The taper ratios are calibrated for the 0% and 100% analog inputs. (The values for the 0% and 100% analog
inputs are fixed.)
Input terminal
Terminal 2 (0 to 100%)
Terminal 4 (0 to 100%)
∗1
Terminal 1 (-100 to 100%)
Terminal 6 (FR-A8AZ) (-100 to 100%)
∗1 The initial input range is 20 to 100%.
• When the taper ratio setting is input using analog input, the input value can be filtered using Pr.829 Taper ratio setting
input filter time constant.
Taper mode selection (Pr.1284)
• Use Pr.1284 Taper mode selection to select the tension reduction method (taper mode) for the taper function.
Pr.1284 setting
0
No taper
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TENSION SENSORLESS TORQUE CONTROL
C3 (Pr.902), C4 (Pr.903)
C6 (Pr.904), C7 (Pr.905)
C13 (Pr.917), C15 (Pr.918)
C31 (Pr.926), C33 (Pr.927)
Taper ratio setting (%)
100
Bias
C3(Pr.902)
C6(Pr.904)
C13(Pr.917)
C31(Pr.926)
-10 V
Constant tension command control
F = F*
TP
F : Taper control tension command, F*: Tension command
TP
Tension command value
Tension command
Calibration parameter
0 Analog input value 10 V
Taper mode
Taper control tension command
Minimum Maximum
winding diameter winding diameter
Gain
C4(Pr.903)
C7(Pr.905)
C15(Pr.918)
C33(Pr.927)
Winding diameter