Dancer feedback speed control details
95
3
• When the dancer tension setting is input using analog input, the input value can be filtered using
Pr.74 Input filter time
constant
,
Pr.826 Torque setting filter 1
, and
Pr.836 Torque setting filter 2
.
NOTE
• The dancer tension setting input is clamped at 100%.
Dancer tension setting adjustment (Pr.426, Pr.427)
• Use
Pr.426 Dancer tension setting
and
Pr.427 Dancer tension setting input selection
to calibrate the dancer tension
setting (
Pr.430 Dancer tension setting bias
setting or input value through terminal set in
Pr.364 Dancer tension setting
gain
).
• Use
Pr.426
to set the value when the dancer tension setting is 0%, and use
Pr.427
to set the value when the dancer
tension setting is 100%.
Taper function (Pr.1284 to Pr.1297)
• By setting the dancer tension, taper ratio, and winding diameter at taper start, the analog output signal for dancer tension
control can be calculated based on the winding diameter determined by winding diameter calculation.
• The following example shows the relation between the winding diameter and analog output signal for dancer tension
control when
Pr.1284 Taper mode selection
= "1" (taper mode selection: linear taper profile)
• For the details of the operation using taper function, refer to the description of taper function for tension sensorless torque
control. (Refer to
The differences from the taper function for tension sensorless torque control are as follows.
Function
Input
Output
Taper function for analog output
signal for dancer tension control
Dancer tension setting
(
Pr.430
, or analog input according to
Pr.364
)
Analog output signal for dancer tension control
Taper function for tension sensorless
torque control
Tension command
(Tension command according to
Pr.804
)
Taper control tension command F
TP
100%
0%
Pr.426
(Dancer tension setting bias)
Pr.427
(Dancer tension setting gain)
Pr.430
setting
or analog input
Dancer tension setting (%)
For dancer tension control
Analog output signal (%)
Winding diameter
Pr.1286
(Winding diameter
at taper start)
Minimum
winding diameter
Maximum
winding diameter
Dancer tension setting
for taper control
Taper ratio setting
Taper ratio setting
(
Pr.1287
or analog terminal input)
Taper ratio = 100%
Dancer tension setting
(after calibration)
Summary of Contents for A800 Plus Series
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