Tension sensor feedback torque control details
148
TENSION SENSOR FEEDBACK TORQUE CONTROL
6.5.1
Tension sensor feedback torque control
function selection
Select forward/reverse action for tension sensor feedback torque control.
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).
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.
Pr.
Name
Initial value
Setting
range
Description
128
R100
(A610)
PID action selection
0
0
Tension sensor feedback torque control disabled.
40
Tension sensor feedback torque
control enabled.
Reverse action
41
Forward action
Pr.128
setting
value
Forward
/reverse
action
setting
Operation status
Set point input
Tension
feedback signal
input
Tension
command input
0 (initial
value)
—
Tension sensor feedback torque control
disabled.
—
—
—
40
Reverse
action
When deviation X (set point subtracted by
measured value) is a plus value, the
manipulated amount is increased, and
when the deviation is a minus value, the
manipulated amount is decreased.
Tension command
after taper
compensation
Set in
Pr.363
.
Set in
Pr.804
.
41
Forward
action
When deviation X (set point subtracted by
measured value) is a minus value, the
manipulated amount is increased, and
when the deviation is a plus value, the
manipulated amount is decreased.
STF
X114
20 ms or more
ON
ON
Summary of Contents for A800 Plus Series
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