Danfoss VLT5000 SyncPos Operating Instructions Manual page 48

14. Verify whether the velocity and acceleration of
the slave remain within the limit. For this
purpose, you must activate the illustration of the
→ "VELOCITY" and of the →
and then the illustration of the
→ "ACCELERATION" and of the →
LIMIT".
15. "FILE" → "SAVE as CNF"
How to load the curve into the VLT
You can load the cnf file with the modified para-
meters and the – automatically generated – curve
arrays into the VLT by means of "PARAMETERS"
→ "RESTORE FROM FILE".
MG.10.J8.02 – VLT is a registered Danfoss trade mark
Programmable SyncPos motion controller
How to integrate the curve "slave synchronization"
into the control program
In order to determine the master position, a switch
"VEL.-LIMIT" on the master is required that indicates the zero
position. In order to put the slave into the correct
"ACC.- position, it will be moved forward to the photoelec-
tric beam. This corresponds to the beginning of the
box = 1000. Then the slave will be moved further
by 2900 (= marker distance 3900–1000); thus, the
slave is exactly in front of the processing point with
the beginning of the cardboard box 1000, i.e. at
slave position 0.
DIM slavesync[108]
// see number of elements in the title bar
// of the CAM-Editor window
H O M E
// Slave axis performs a home run
// (switch for zero position on top)
// Afterwards, the slave will be in the
// zero position (0 degrees)
// (Omitted if an absolute encoder is used)
DEFMCPOS 0
// Curve starts at master position 0
SET SYNCMSTART 2000
// Counting of master pulse does not begin
// until the next edge comes from the sensor
SETCURVE slavesync
// Set curve for the slave synchronization
// Go to start
CSTART
CVEL 10
// Go forward slowly until photoelectric
// beam appears
oldi = IPOS
// oldi = last marker position of the slave
WHILE (oldi == IPOS) DO
// Wait until box is detected
E N DWH I LE
POSA (IPOS + 2900)
// Move box forward by 2900
SYNCCMS 0
// Synchronize in CAM-Mode
SYNCCSTART 1
// Engage with start-stop point pair
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