Rockwell Automation 9329 Drive Application Software Tension Control Gen. Units - Manual (Page 27)

FM – Tension Control
Drive Application Software – page 27 of 52
4.6 TenRfTaper routine
The routine is for use in Center Winder applications only.
As material is wound on to the roll, the tension reference is reduced to prevent crushine
(damage) to the material all ready wound on the core. The web chariastics and finished roll
diameter dictate if and how much taper is required. The taper percentage is adjusted as a
function of roll diameter. At core the actual tension will be the setpoint tension. As diameter
increases the actual tension will be decreased until full roll diameter is reached. The percent
taper is the percent of the setpont tension to be applied at full roll.
The TenRfTaper reduces the tension reference as the roll diameter builds. The user inputs
the diameter at which taper tension begins and the amount of taper tension in percent.
Input Parameters
Name Type Range Description
1 DiamCalc_EU REAL NA Diameter Engineering Units
2 DiamFR_EU REAL NA Diameter Full Roll
3 DiamStrtTaper_EU REAL NA Diameter Start Taper
4 TenRfTaperFR_Pct REAL 0 to 100 Tension Reference Full Row %
Return Parameters
Name Type Range Description
1 TenRfTaper_Pct REAL 0 to 100 Taper Tension Reference Pct
DiamStrtTaper_EU DiamFr_EU
TenRfTaperFR_Pct
Setpoint
Diameter_EU
Taper Percent