
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
(upper limit) and
(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.
/B&XUYHB
Q2XWBD
Q,QBD
E/LPLW
& )XQFWLRQ
[
\
[
\
&
&
&[
&[
&
;9DOB
<9DOB
& 6HOHFWFXUYH
Q&XUYH&WUOBD
Q'BD
Q'LDPHWHUBD
E(QDEOH7HQVLRQ&XUYH
Q&XUYH9DOXHBD