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Lenze 8400 - LCurve3

Lenze 8400
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Lenze · 8400 HighLine · Reference manual · DMS 12.0 EN · 06/2017 · TD23 1338
17 Function library
17.1 Function blocks | L_Curve_3
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
17.1.69 L_Curve_3
Alternatively, this FB represents a characteristic curve or cam function y=f(x), whereby the input
signal of the X-axis and the output signal of the Y-axis correspond.
A limitation of the input value can be set in C01031/1
(upper limit) and C01031/2 (lower limit).
The output value is internally limited to ±199.99 %. If a limitation of the output value is active,
bLimit is set to TRUE.
Tip!
From version 12.00.00 onwards the FB L_Curve_3 can be used to create a tensiel force
dependingt on the diameter for winding applications. For this purpose, the FB has been
extended by further inputs/outputs and parameters.
Use of the L_Curve_3 for tensile force characteristic
Inputs
Designator
Data type
Information/possible settings
nIn_a
INT
Input value (x)
±16384 ±100 %
A limitation of the input value can be set in C01031/1 (upper limit) and C01031/2
(lower limit).
When using the FB for tensile force characteristic (from V12.00.00):
Maximum tensile force setpoint in [%]
The following inputs are only relevant when the FB is used for tensile force characteristic:
nCurveCtrl_a
INT
From version 12.00.00
Slope of the characteristic (torque characteristic) in [%]
±16384 ±100 %
Internal limitation to -100 ... +200 %
With 100 %, there is a constant tensile force curve and thus a torque
proportionally rising with D.
nD0_a
INT
From version 12.00.00
Initial point of the characteristic
16384 100 % maximum diameter
nDiameter_a
INT
From version 12.00.00
Current diameter in [%]
16384 100 % maximum diameter
bEnableTensionCurve
BOOL
From version 12.00.00
Activate tensile force setpoint
FALSE Tensile force setpoint is not influenced.
TRUE Tensile force setpoint is multiplied by the characteristic value.
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