Dancer feedback speed control details
96
Dancer tension setting example
This example assumes an air cylinder for which the dancer tension is 0 N when the input voltage is 0 V, and the dancer
tension is 20 N when the input voltage is 10 V. In the example, the setting method is described to input the analog output
signal for dancer tension control to the air cylinder so that the dancer tension becomes 10 N when the winding diameter has
the minimum value.
1
Checking the air cylinder specifications
Check the air cylinder specifications (relation between the input voltage and the tension).
It is assumed that the dancer tension is 0 N when the input voltage is 0 V, and the dancer tension is 20 N when
the input voltage is 10 V for the air cylinder in this example.
2
Finding the voltage based on the target tension setting
When the target tension value is 10 N, the input voltage is 5 V.
3
Finding the analog output signal value for dancer tension control
In order to output the voltage of 5 V through terminal AM to achieve the target tension, set the analog output
signal for dancer tension control to 50%.
Assign the analog output signal for dancer tension control to terminal AM. (
Pr.158
="19")
4
Setting the tension
Set the tension so that the value calibrated using
Pr.426 Dancer tension setting bias
and
Pr.427 Dancer
tension setting gain
matches the value determined in step 3.
When the
Pr.426
and
Pr.427
settings are initial values, set
Pr.430
or input an analog value through the terminal
set in
Pr.364
so that the tension setting becomes 50%.
10 V
20 N
0 N
Tension (N)
Voltage (V)
0 V
5 V
10 N
Air cylinder specification
100%
10 V
0 V
Terminal AM voltage (V)
Analog output signal
for dancer tension control (%)
0%
50%
5 V
Analog output signal for dancer tension control
Summary of Contents for A800 Plus Series
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