Tension Sensor Feedback Torque Control Function Selection - Mitsubishi Electric A800 Plus Series Function Manual

Tension sensor feedback torque control details
6.5.1
Tension sensor feedback torque control
function selection
Select forward/reverse action for tension sensor feedback torque control.
Pr. Name
128
R100 PID action selection
(A610)
PID action selection (Pr.128)
• Set forward or reverse action according to the control target.
• The following table shows the input method for the set point, tension feedback signal, and tension command for the tension
sensor feedback torque control function (Pr.128 = 40 or 41).
Forward
Pr.128
/reverse
setting
action
value
setting
0 (initial Tension sensor feedback torque control
—
value) disabled.
When deviation X (set point subtracted by
measured value) is a plus value, the
Reverse
40 manipulated amount is increased, and
action
when the deviation is a minus value, the
manipulated amount is decreased.
When deviation X (set point subtracted by
measured value) is a minus value, the
Forward
41 manipulated amount is increased, and
action
when the deviation is a plus value, the
manipulated amount is decreased.
NOTE
• The automatic restart after instantaneous power failure function is not activated while tension sensor feedback torque control
is enabled (Pr.128 = "40 or 41").
• To perform tension sensor feedback torque control, set Pr.127 PID control automatic switchover frequency = "9999 (initial
value)". (If the Pr.127 setting is other than "9999", a sudden speed change may occur.)
Tension control selection signal (X114 signal)
• To enable the tension sensor feedback torque control, turn ON the Tension control selection (X114) signal and set "40 or
41" in Pr.128 PID action selection.
• To input the X114 signal, set "114" in any of Pr.178 to Pr.189 (Input terminal function selection) to assign the function.
• After turning ON the X114 signal, wait20 ms or longer to input a start (STF/STR) command.
PID compensation disabled signal (X116 signal)
• PID compensation can be disabled by turning ON the X116 signal. To input the X116 signal, set "116" in any of Pr.178 to
Pr.189 (Input terminal function selection) to assign the function.
148
TENSION SENSOR FEEDBACK TORQUE CONTROL
Initial value
0
0 40
41
Operation status
20 ms or more
STF
ON
X114
Setting
range
Tension sensor feedback torque control disabled.
Tension sensor feedback torque
control enabled.
Set point input feedback signal
— —
Tension command
after taper Set in Pr.363.
compensation
ON
Description
Reverse action
Forward action
Tension
Tension
command input
input
—
Set in Pr.804.