Nexen RSD200 964531 - Manual (Page 14)

FORM NO. L-21161-E-0108 1
.2 Web TeNSION - RSD200P ONLY
If the machine’s tension setpoint varies more than
+/- 50%, RSD200 performance can be improved with
tension compensation. Improved performance will allow
faster machine accelerations & decelerations.
If the machine’s tension setpoint does not vary more than
+/- 50%, or the Tension Compensation is not chosen, the
WEb TENSION CALIbRATION window can be left with
default values in the PRESSURE and TENSION fields.
Setting up tension compensation involves calibrating
the RSD200 to convert Dancer Arm loading pressure
into total tension. Consequently, total web tension must
be physically measured (or calculated) for minimum and
maximum tension during the setup process.
Figure 12
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1. Repeat the steps in LOW TENSION section at maxi-
mum tension.
2. Press the SeND button to send the Web TeN-
SION CALIbRATION values in the RSD200.
machine with Tension measurement System:
1. Setup the web machine with the minimum tension.
2. Run the machine at a slow run speed and adjust the
output of the RSD200 manually until the dancer arm
is stable.
3. Enter the measured web tension and Dancer Arm
loading pressure values in the Low Tension fields of
the Web Tension Configuration window.
machine without Tension measurement System:
1. Set the dancer pressure to the minimum.
2. With a scale, measure the force it takes to hold the
dancer arm in its operating position.
.0 SeNSOR CALIbRATION
Figure 11
The Dancer Arm Position Sensor must be calibrated
before the RSD200 can operate properly.
1. Select DANCER RANGE.
2. Follow the displayed instructions.
Calibration involves moving the dancer to each of its
limits and pressing the appropriate DANCER RANGE
buttons. The direction of dancer arm movement is
automatically accounted for in this calibration process.
.1 DANCeR RANge
Select the Sensor Calibration icon in the toolbar.
3. Use the following formula to calculate total web ten-
sion: Total Tension = Force Measurement / ((Number
of dancer rollers)•2).
4. Enter the web tension and Dancer Arm loading
pressure values in the Low Tension fields of the Web
Tension Configuration window.
Select Web Tension from Sensor Calibration Window.
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