Parker 590 series - Taper Calc

6-60 Programming Your Application
590 Series DC Digital Converter
TAPER CALC.
The purpose of this block is to profile the
tension demand with diameter.
Functional Description
Taper Function
Tension Spt. [439]
Ta p er e d D e m a n d
Diameter*
Min Diameter*
Tension Trim
To ta l Te n si o n D em a n d
[441]
[440]
*Permanently linked
100
0
100
0
100
-100
100
-100
[452]
to Diameter Calc.
Ta p e r [ 4 3 8 ]
Hyperbolic Taper Tension
The taper block provides hyperbolic taper tension according to the following equation: -
()
{
}
Tapered Demand Tension Spt 100%
Taper
Diameter
Diameter Min Diameter=×−×−
The taper tension characteristics are shown below: -
Te ns io n
Min
Diameter
100%
Diameter
-100% Taper
100% Taper
0% Taper
To rq u e
Min
Diameter
100%
Diameter
-100% Taper
0% Taper
100% Taper
100% taper tension is equivalent to constant torque on the centre wind spindle.
TAPER CALC.
–
TAPERED DEMAND [452]
–
0.00%
–
TOT. TENS DEMAND [441]
–
0.00%
0.00 %
–
[438] TAPER
–
0.00 %
–
[439] TENSION SPT.
–
0.00 %
–
[440] TENSION TRIM
–
MMI Menu Map
1
SETUP PARAMETERS
2
SPECIAL BLOCKS
3
TAPER CALC.
TAPER
TENSION SPT.
TAPERED DEMAND
TENSION TRIM
TOT. TENS. DEMAND
Parameter Descriptions
TAPER
Range: -100.00 to 100.00 %
This defines the amount of tapering in the tension demand with diameter variation. When
TAPER is positive, the tension demand is hyperbolically decreased as diameter increases
TENSION SPT.
Range: 0.00 to 100.00 %
This is the required tension setpoint.
TENSION TRIM
Range: -100.00 to 100.00 %
This is the additional tension demand in the form of a trim.
TAPERED DEMAND
Range: 0.00 to 100.00 %
This is the output of the TAPER calculation on the TENSION SPT.
TOT. TENS. DEMAND
Range: -100.00 to 100.00 %
This is the final output of this block (total tension demand) which can be connected to the
appropriate points in the block diagram.