Mitsubishi Electric FR-A700-A1, Instruction Manual

Page: 60 / 86

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