Danfoss VLT Center Winder MCO 352, Руководство по эксплуатации

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5.1.6 Check Tension Correction Direction
1. Make sure that the taper and tension set points are set to zero. With no web, the tension should be at zero as well.
2. Close Input 5 “Tension ON”
3. Increase PID limit parameter 19-40 to 5000.
4. The Winder should not be moving since Tension PID values are set to zero.
5. Run the line at some slow speed, the Winder should follow at slow speed.
6. Increase Proportional Gain parameter 19-42 to 50.
7. Increase the Tension Set Point 20% through the input means selected in parameter 19-19.
8. If rewinding, the Winder should increase in speed. If the station is used as an unwinder, the speed should decrease. If there is no change in
speed, increase par 19-42 until a speed change is noticeable.
9. Applied load to load cells or dancer to indicate a tension feedback over 20 % (200). The Winder should decrease in speed if rewinding and
increase in speed if unwinding.
10. Stop the line.
11. Open Input 5 “Tension off”
5.1.7 Winder Closed Loop Calibration
1. Web up the machine.
2. Verify the starting diameter:
- If rewinding with an empty core, the value set in parameter 19-05 should be the starting diameter. Open Input 4 “Partial Core” and Input
7 “Core Select.”
- If starting with a partial roll or if unwinding, the diameter value should be measured and the percentage of 100,000 calculated. This value
should be entered into parameter 19-04. Close Input I4.
- Reset the diameter with Input I8. (If using the initial diameter measurement function, no special action is required.)
3. Close Input 5 “Tension ON”.
4. Set the Tension Set Point to a proper tension for the material being used. If using a dancer, set the tension set point to 500, which represents
the mid-point dancer position.
5. Increase tension proportional gain parameter 19-42 until the winder starts to develop tension. Continue to increase until the displayed
Tapered Tension Set Point matches the LCP displayed Tension Feedback. Note proportional gain value. Continue to increase until winder
becomes unstable when a tension disturbance is introduced by pushing on the web. Note this value and set the proportional gain between
these two values.
6. Slowly increase line speed to about 10 % of max. Adjust the integral time parameter 19-44 until tension is stable.
7. Slowly increase line speed to max speed. Fine-tune parameters 19-43 – 19-47 for stable tension.
8. Adjust par 19-30 “Acceleration Feed-Forward” so that tension remains stable during acceleration or deceleration. This adjustment should
be optimized when line ramps are set to minimum values required.
9. Check that the displayed Diameter is changing with the roll diameter.
10. If the Tension Limit Detection (TLD) is to be used, determine appropriate settings for parameters 19-08 to 19-11.
11. Determine desired setting for parameter 19-12, End-of-roll output.
12. Ensure tuning is appropriate from core to full roll. If tension regulation changes with roll diameter, adjust the PID profiler parameter 19-41.
A higher setting will result in a reduction of PID output at larger roll diameters.
13. If various materials are run on the winder, repeat steps 5 through 9 with all additional material types or widths. Input 6 is provided to
allow switching between two different material types or nine material types if using parameter 19-66.
VLT
®
Center Winder MCO 352 5 Center Winder Calibration
MG.33.T1.02 - VLT ® is a registered Danfoss trademark
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