Function block library
7-242
SHB9300CRV EN 2.0
Synchronized stretching/compression of drive motion
Note!
This function is only valid for the cam drive, not for the master drive!
Synchronized stretching and compression is required for the following:
l
If master value and cam drive must run absolutely synchronously.
l
The factor must be changed during operation.
This function should be used if more than 8 profiles are required to change the cam drive travel.
The travel can be changed on-line via stretching and compression.
– Interconnection of function blocks
YSET1
YSET1-O UT
C 1357/1
YSET1-O FFS
C 1356/1
C 1353/1
YSET1-FACT
C 1352/1
C 1359/1
YSET1-IN
C 1358/1
+
C 1350
C 1355/1
YSET1-RESET
C 1354/1
C 1359/2
YSET1-IN-SYNCH
C 1358/2
CTRL
C 1355/2
YSET1-SYNCH
C 1354/2
CDATA-X0
CDATA-SYNCH
CDATA-NOUT
– Activate function
The function is only active if C1317 = 1.
The changeover is carried out during zero crossing of the profile.
Note!
Stretching/compression in X direction can be carried out via the input CDATA-XFACT.
7.6.79.2 Offset
It is possible to the X position by a constant value via input YSET-OFFS.
7.6.79.3 Direction reversal
There are two possibilities to inverse the direction of rotation:
1. Via code C1351/1.
2. Application of a stretching/compression factor
YSET-FACT = -100% (see also table above).
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