65
Details of the tension control
4.6.5
Stall operation signal (Pr. 737, Pr. 738, Pr. 760, X92 signal)
Turn ON the stall operation signal (X92) to bring the motor into the stall status and to apply tension to a sheet of paper to be
winded.
Doing this spreads out the sheet of paper tightly before it is winded.
Turning ON the X92 (stall operation signal) and a start signal pushes up the speed limit to the
Pr. 738
setting in
Pr. 760
.
Use
Pr. 737
to set the torque for the stall operation. The torque during stall operation is [torque command
Pr. 737
setting].
Turning ON the X57 or X58 signal cancels the stall operation and sets the torque command and the speed limit back to the
normal settings.
Mechanical loss compensation is disabled while the X92 signal is ON.
If the stall operation signal turns ON again during operation, the torque setting changes to the [torque command
Pr. 737
].
The speed limit also changes to the
Pr. 738
setting in
Pr. 760
.
The LX, X13, and forced stop signals have higher precedence than the stall operation signal.
Turning OFF the start signal while the X92 signal is ON decelerates the motor to a stop in
Pr. 760
.
Parameter
Number
Name
Setting Range
Setting
Increments
Initial
Value
Remarks
737
Stall torque setting
0 to 200%
0.1%
20%
738
Speed limit for stall
operation
0 to 60Hz
0.01Hz
1Hz
760
Third acceleration time
for the main speed
0 to 3600s/0 to 360
0.1s/0.01s
15s
The setting increment is
determined by the
Pr. 21
Acceleration/deceleration time
increments
setting. Set the
time period to reach the
Pr. 20
Acceleration/deceleration
reference frequency.
Name
Setting
Terminal Signal
Remarks
Stall operation signal
92
X92
ON: Stall operation
OFF: Normal operation
X92
(stall signal)
Start command
(STF)
X57
(inertia compensation
acceleration signal)
Torque setting
Torque command
Pr. 737
Pr. 738
Pr. 738/Pr. 20*Pr. 760
Speed limit during
stall operation
Normal operation
Speed limit while
Pr. 807
="3"
Speed limit for
stall operation
Torque limit
Turning ON X92 during operation switches
the torque setting to [torque command
Pr. 737
].
Turning ON X57 or X58 while the stall signal is ON switches
the torque setting to the normal torque setting.
Turning ON X57 or X58 while X92
is ON switches the speed limit to
the normal speed limit.
Turning ON X92 during operation
switches the speed limit to
Pr. 738
setting in
Pr. 760
.
