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4.5 Tension control parameter setting procedure
The following flowchart shows the parameter setting example for the tension control.
Select a control method according to
the application and the motor.
Applied motor selection (Pr. 71)
Basic setting
Motor capacity (Pr. 80)
Number of motor poles (Pr. 81)
Control method selection (Pr. 800)
Number of encoder pulses (Pr. 369)
Torque
Make the settings for the torque
control
control.
setting
Set "83" in any of Pr. 178 to Pr. 189
(input terminal function selection) to
assign the X83 signal.
Input signal
setting
Set Pr. 763 Line speed input selection.
(Refer to page 33
Input method for line speed
For Pr. 765 Voltage reference for line speed
input, set an analog voltage which is
Line speed
input to the inverter when the line speed
input
reaches the set speed in Pr. 766.
calibration
(Refer to page 33.)
Calibrate the line speed for the line
input signal according to the input
method of the line speed.
See the next page.
Start
To perform tension control, set Pr. 800 = "6 (vector control)" or "16 (Real
sensorless vector control)".
Refer to the Instruction Manual of FR-A700, and make the settings for the torque
control.
Keep the X83 signal ON to enable the tension control.
Pr.763
Line speed input signal
setting
Without line speed input signal
0
(Main speed is the line speed.)
1
Single-phase pulse train input (terminal JOG)
2
Encoder pulse train input (FR-A7AP/FR-A7AL)
3
Analog input (terminal 2)
4
Analog input (terminal 4)
5
Analog input (terminal 1)
6
Analog input (terminal 6 of FR-A7AZ)
7
Single-phase pulse train input (FR-A7AL)
Analog input
Pr. 763 = "3, 4, 5, or 6"
For Pr. 764 Pulse reference for line
speed input, set a pulse frequency
which is input when the line speed
reaches the set speed in Pr. 766.
(Refer to page 33.)
In Pr. 766 Line speed reference, set a reference value for the
line feed speed. (Refer to page 33.)
Enter the same setting unit as Pr. 766 in Pr. 767 Line speed
unit . (Refer to page 33.)
Tension control parameter setting
POINT
Pulse train input
Pr. 763 = "1, 2, or 7"
procedure
Without line
speed input
signal
Pr.763 = "0"
4
57
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