Cam Box; How A Cam Box With Syncpos Operates; Example Of A Cam Box - Danfoss VLT5000 SyncPos Operating Instructions Manual

■ ■ ■ ■ ■ CAM Box
■ ■ ■ ■ ■ How a CAM box with SyncPos operates
The mechanical camshaft is also reproduced by
one (or more) curves. In order to realize a CAM box,
it must be possible to engage and disengage the
slave at specific master positions over and over
again.
This is possible with SyncPos with the interrupt
command ON MAPOS .. GOSUB and ON APOS ..
GOSUB. It is possible to call up a subprogram
whenever a defined master position has been
passed (both in the positive or negative direction,
to be precise).
It is possible to realize many applications that are
typical for the packaging industry in connection
with a curve profile in which several have been
defined for engaging and disengaging.
■ ■ ■ ■ ■ Example of a CAM Box
After a cardboard box has been printed, the fresh
print is to be dried immediately in the air stream:
ON MCPOS 2500 GOSUB drier
// Call up a subprogram when the master
// position 2500 is passed in
// positive direction
SUB MAI NPROG
SUBPROG drier
OUT 1 1 // Turn on drier
DELAY 300 // Dry for 300 ms
OUT 1 0 // Turn off drier
RETURN
ENDPROG
48
Programmable SyncPos motion controller
MG. 1 0.J8.02 – VLT is a registered Danfoss trade mark