Lenze EVS9332xK - Manual (Page 106)

Function library
Function blocks
3.2.20 Setpoint conditioning (CCTRL2)
3−78
l
EDSVS9332K−EXT EN 4.0
Synchronisation via touch probe at terminal X5/E4 1
A touch probe signal at terminal X5/E4 is the quickest and most accurate mark registration and is
suited for a cyclic synchronisation.
By means of the touch probe signal, a deviation between CCTRL2−PHI−ACT and CCTRL2−TP−POS
is measured. At CCTRL2−ACT−TP−DIFF the deviation is always output as the shortest way. The
deviation can be compensated by a compensation speed.
Application examples:
l For applications without a homing function.
l After mains connection, the measuring system of the controller and that of the machine can
diverge very much. In the majority of cases, the path to be compensated is very long.
l For applications (e. g. with conveying belts) an occurring slip has to be compensated by cyclic
synchronisation. In the majority of cases, the path to be compensated is relatively short.
Procedure:
1. Set CCTRL2−TPIN/E4 = HIGH.
2. Define the position of the touch probe sensor on the machine at CCTRL2−TP−POS.
– The input values have to correspond to the cycle (CCTRL2−Y−END). For example, for a cycle
of 360 ° only values in the range of −359 ° ... +719 ° may be defined at CCTRL2−TP−POS.
3. Select the source for the compensation speed:
– C1735 = 0: The compensation speed is defined via C1365/1 (Lenze setting).
– C1735 = 1: The compensation process is controlled by selection of a profile at
CCTRL2−TP−SPEED−LIM.
)
Note!
l The CCTRL2 function block does not contain a profile generator. The profiles
have to be generated via additional function blocks (e.g. RFGPH2 or RFGPH3).
See also example in fig. 3−205.
l Do not specify constant values at CCTRL2−TP−SPEED−LIM (e.g. via free codes
(FCODE)).
4. Select the signal edge for the input signal at terminal X5/E4:
– In the case of CCTRL2−TP−EDGE−SELECT = LOW, HIGH−LOW edges are evaluated.
– In the case of CCTRL2−TP−EDGE−SELECT = HIGH, LOW−HIGH edges are evaluated.
5. A corresponding signal edge at terminal X5/E4 synchronises the drive to the set position which
is output at CCTRL2−PHI−SET.
)
Note!
l The set profile position has to be activated (CCTRL2−N2−SET = LOW).
l For applications with feed, the final Y value of the profile must be assigned to the
input CCTRL2−Y−END (e.g. by output CDATA2−Y−END). The function is not
suitable for stretching and compression.
l Save the settings with C0003 = 1 and switch the mains voltage off and on again.
– When the mark synchronisation is parameterised, the function block
automatically changes to the "Modulo" or "Limited traversing range" mode.
Only by mains switching the touch probe function is initialised with the mode
selected.