Lenze E94A - Manual (Page 175)

Lenze · 9400 function library · Reference manual · DMS 6.7 EN · 08/2014 · TD05
175
5 Function blocks
5.9 L_CamStretchAbs - stretching/compressing the position (absolute)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
5.9 L_CamStretchAbs - stretching/compressing the position (absolute)
This FB is used for simple absolute stretching and compression of a position in the limited traversing
range.
• Via the inputs dnNumerator and dnDenominator a free stretch factor for the position transmis-
sion can be defined. A changed stretch factor is only accepted internally with a TRUE signal at
the input bZero.
• At the same time, the FB can stretch/compress the acceleration feedforward value, which
the L_CamProfiler FB provides to downstream FBs.
Inputs
Function library: LenzeCam FB permissible for firmware as of V3.0 only!
Runtime software licence:  Motion Control HighLevel  Motion Control TopLevel
Identifier/data type Information/possible settings
dnPosIn_p
DINT
Input position in [increments]
• C05463 indicates the input position in the real unit of the machine.
dnAccIn_x
DINT
Acceleration feedforward value
• For accepting the acceleration feedforward value for the y axis, given by
the L_CamProfiler FB, just connect this input with its output dnYAccOut_x.
• Selection as speed change/time in [rpm/s]
• Display parameter: C05464
bZero
BOOL
Accept changed stretch factor
• Apply an acceptance signal to this input, which for instance signalises the zero
crossing of the x axis (synchronised stretching/compression).
TRUE The changed stretch factor is accepted internally.
• At the same time the status bit 10 ("Zero crossing active") is set in
C05469.
dnNumerator
DINT
Stretch factor (numerator)
• ±2 31 -1
dnDenominator
DINT
Stretch factor (denominator)
• 1 ... 2 31 -1
• A negative stretch factor can only be defined via dnNumerator.
• In the case of an input value < 1, processing is continued internally with 1.
AxisData Machine parameters
• If the FB is to relate to the measuring system of the drive axis, connect this input
to the output DI_AxisData of the LS_DriveInterface SB for accepting the machine
parameters of the drive/motor.
• If the FB within a cam application is to relate to the measuring system of the mas-
ter selection (master), connect this input to the output XAxisData of
the L_CamProfiler FB instead. ( 162)
GQ3RV2XWBS GQ3RV,QBS
GQ$FF,QB[
$[LV'DWD
/B&DP6WUHWFK$EV
GQ$FF2XWB[
& &
&
GQ1XPHUDWRU
GQ'HQRPLQDWRU
GQ6SHHG2XWBV
& 6WDWH &75/
E(UURU E=HUR
& &
& 6SHHGXQLW
& 3RVXQLW
& (IIHFWLYHVWUHWFKLQJIDFWRU