Lenze 8400 - Page 1341

17 Function library
17.1 Function blocks | L_Curve_3
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Lenze · 8400 HighLine · Reference manual · DMS 12.0 EN · 06/2017 · TD23
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Linear torque profile
• nD0_a serves to define at which diameter the tensile force decrease is to start.
• Since in this characteristic selection, the linear torque profile is in the focus, define in this case
the slope of the torque curve via dnCurveCtrl_n:
•When nCurveCtrl_a = 100 %, the tensile force remains unchanged.
•When nCurveCtrl_a = 0 %, the tensile force is reduced up to D0/DMax.
Characteristic for a linear torque profile (C01035/1 = 2)
Characteristic
 Tensile force
 Diameter
Function for D > D0:
D Current diameter (nDiameter_a)
D0 Initial point for diameter dependency (nD0_a)
HW Tensile force valuation (nCurveCtrl_a)
Example: Steepness of the torque curve
Characteristic
 Torque
 Diameter
D Current diameter (nDiameter_a)
D0 Initial point for diameter dependency (nD0_a)


DMin
(DMax)
D0 100 %
100 %
0%
100 %
nCurveCtrl_a=0%
HW
HW
100 % HW–()D0⋅
D
------------------------------------------------
+


DMin
(DMax)
D0 100 %
100 %
0%
100 %
nCurveCtrl_a
0%
50 %