Cleveland Motion Controls WebPro Intermediate Tension Controller MWP-12663 REV BA - Manual (Page 14)

AO-70174
14
Revision BA
WebPro Intermediate Tension Controller
Output level bias
(For Output trim only – NO)
This item will output a signal at all times, for example to overcome friction in the controlled drive.
The value of this item will reduce as the line speed increases so that at maximum line speed the
bias is reduced to zero, this is because a maximum of 10V only can be output from the Controller.
This bias does not operate with Output trim only - YES, the controlled drive should provide this.
Output level limit
This item will scale the output signal for both trim only and combined trim and line speed. This
item should be set according to the controlled drive maximum speed input voltage, for example if
the drive max speed is 10V set this item to 100%, if the drive max speed is 5V set this to 50%.
Set point ramp rate
It may cause an unacceptable disturbance and be unsafe if the tension is changed too quickly.
Enter a value which is slightly slower than the PI stability rate so that the system can maintain the
desired tension value as the set point is changed.
Display damping time
If the tension is fluctuating enter a value between 0.1 and 3 seconds so that the display is steady.
The Display Damping operates on the analog bar graph and the digital display.
Display precision
(1, 5, 10 ( 0.1, 0.5 and 1 for percent units ))
Enter a value so the display can be read easily and the tension set point easily entered. This item
also sets the resolution of the tension set point value.
Right transducer
Disabled, Enabled
Select "Disabled" when a single transducer is used, for example in wire and cable or narrow web
applications. The single transducer must be connected to the "Left" terminals using TB3.
Line Tacho or Encoder *
If an encoder is selected enter the maximum number of pulses per second when the machine is
at maximum speed. This allows for the encoder pulses per revolution and the gear ratio used.
Enter the number of pulses per metre or foot if the Length Counter feature is required. The
maximum number of pulses allowed is 999 pulses/metre or 3000 pulses/foot.
The tacho or encoder must be Enabled in order to function
All Machine Parameters and Product Parameters, including the current TENSION SET POINT value are
saved to non-volatile memory. This ensures that when the Controller is switched off or if the power is
removed, the parameters are saved.
Calibrate Tension
To calibrate the Controller correctly a spring balance or weights to provide the required tension force and
some flat webbing or rope to simulate the web will be required. If the force is insufficient for the maximum
required tension value, the Controller may be calibrated proportionally. The force should be no lower than
25% of the maximum or the accuracy of tension measurement will be reduced.
Switch on and allow to thoroughly warm up.
From the Commissioning Menu; press 2 to show the Calibrate tension screen.