Carotron DIV280-000, Instruction Manual

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Step 6: Adjust Build Ratio
1. Determine the BUILD RATIO by dividing the maximum roll diameter by the
minimum roll (empty core) diameter. If multiple sizes are used, calculate with the
smallest core and the largest maximum diameter. For example, a maximum
diameter of 32” and a core diameter of 4” will yield a Build Ratio of 8.
2. Determine the Max Diameter Core Speed by dividing the surface speed measured
in 5.2 above by the BUILD RATIO. For example, with a maximum speed of
100fpm and a BUILD RATIO of 8, the Max Diameter Core Speed would be
12.5fpm (100fpm/8=12.5fpm)
3. Load a maximum diameter roll so that it can be rotated without feeding material.
Rotate the BUILD RATIO potentiometer fully clockwise (approx 20 turns) and the
external speed potentiometer to minimum. Start the winder drive and slowly rotate
the external line speed potentiometer to maximum. Slowly adjust the BUILD
RATIO potentiometer counter clockwise until the surface speed of the material
matches the maximum surface speed measured in 5.2. Alternatively, if a portion
of the core is not obstructed by the material, its surface speed should be equal the
Max Diameter Core Speed value calculated in 6.2. Stop the machine once
complete.
Step 7: Adjust Y TRIM RANGE
1. If the diameter signal on Input Y was calibrated using the Zero Diameter and Max
Diameter levels, then no adjustment is required on the Y TRIM RANGE
potentiometer (leave fully CCW). Calibration is now complete. Otherwise,
continue below. (Note: The majority of users will need to continue with the
following step.)
2. Load an empty core and set external line speed potentiometer to minimum.
Rotate the Y TRIM RANGE potentiometer fully clockwise (approx 20 turns). Start
the winder and slowly increase the external line speed potentiometer to maximum.
Rotate the Y TRIM RANGE potentiometer counter-clockwise until the winder
surface speed equals the maximum surface speed level measured in Step 5.2
above.
Step 8: Final Settings
1. The external Line Speed potentiometer can be used to set the desired material
speed. As the diameter builds, the DIV280-000 will decrease the velocity signal to
the winder to maintain a constant material speed.