Tension sensorless torque control details
TENSION SENSORLESS TORQUE CONTROL
137
5
5.5.7
Stall mode function
By turning ON the Stall mode trigger (X123) signal before starting winding, tension is applied to the material and the stall
mode is activated.
This function is useful for sagging prevention of the material before it is winded.
Stall mode
• While the Stall mode trigger (X123) signal is ON, the tension command value is reduced according to the
Pr.1406
Commanded tension reduction scaling factor during stall condition
setting. The speed limit value is switched to the
Pr.1407 Speed limit during stall condition
setting.
NOTE
• The commanded tension after the reduction according to the
Pr.1406
setting is limited by the maximum tension command
value.
• While the inertia compensation function is activated (the X111/X112 signal is ON), the stall mode is cancelled. (The tension
command and speed limit values are switched back to the normal settings.)
Pr.
Name
Initial
value
Setting
range
Description
270
R342
Acceleration/deceleration time
during stall condition
15 s
0 to 3600 s
Set the acceleration/deceleration time during stall
mode.
1406
R340
Commanded tension reduction
scaling factor during stall condition
20%
0 to 200%
Set the value to reduce the commanded tension during
stall mode.
Commanded tension during stall mode = Tension
command value
×
Pr.1406
1407
R341
Speed limit during stall condition
1 Hz
0 to 60 Hz
Set the speed limit to be used during stall mode.
1409
R343
Tension command cushion time
during stall condition
9999
0 to 360 s
Set the cushion time during stall mode.
Symbol in the
diagram
Description
a
Speed limit during stall condition
b
When the X111 or X112 signal turns ON while the X123 signal is ON, the tension command value is switched back to
the normal setting.
c
When
Pr.1409
≠
0 (or
Pr.1409
= "9999" and
Pr.1282
≠
0), the cushion time is applied.
d
When the X111 or X112 signal turns ON while the X123 signal is ON, the speed limit value is switched back to the
normal setting.
e
When the X123 signal is turned ON during operation, the commanded tension is switched to the tension command
value multiplied by the
Pr.1406
setting.
f
When the X123 signal is turned ON during operation, the speed limit value is switched to the value set in
Pr.1407
in the
time set in
Pr.270
.
X123
STF
X111
Tension command
Speed limit
Tension command ×
Pr.1406
Pr.1407
Pr.1407
Pr.1407
/
Pr.20 Pr.270
Stall mode
Normal operation
Stall mode
a
b
c
d
e
f
Summary of Contents for A800 Plus Series
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