Danfoss VLT5000 SyncPos, Operating Instructions Manual

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Programmable SyncPos motion controller
MG.10.J8.02 – VLT is a registered Danfoss trade mark
74
PC Software Interface
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Index Card "START STOP POINTS"
In this table, you define point pairs for engaging and
disengaging the slave during the synchronization.
You need one point pair to determine the master
position where the synchronization should start and
where the engaging should take place. You can
determine with an additional point pair from what
point on the disengaging should be made and
where the synchronization should be stopped.
You can define several point pairs (a maximum of
25), for example for multiple starts and stops in a
cycle in order to take account of different situations
during the start, for example. With the commands
SYNCCSTART pnum and SYNCCSTOP pnum
slavepos , you can determine in your program which
point pair is to be used.
If the A and B points are identical, the slave will be
engaged with the set maximum velocity, i.e. without
curve, as soon as the master has reached this point.
If no start stop points have been defined, the slave
will be engaged with the set maximum velocity in
the case of SYNCCSTART.
These points are always entered in ascending order,
too. This is because the run direction will be taken
into account automatically by the program: When
moving forward, the synchronization begins at point
A and is finished up to point B. When moving
backward, it begins at point B and is finished up to
point A.
If the program is closed without the explicit com-
mand SYNCCSTOP pnum slavepos , the second
point pair will always be used for disengaging.
How to graphically display Start Stop Points and
progression
You can visually display the start stop points and the
engage and disengage curves in the curve profile.
Activate
→
"START STOP". Yellow flags indicate
the point pairs for the engaging and disengaging in
the synchronization.
In order to display the engage and disengage
curves, enter the number of the point pair whose
progression you want to see in
→
"START STOP
PATH". Without an algebraic sign, engaging is shown
when the master moves forward. Numbers with a
negative sign show disengaging when the master
moves forward.
When the master moves backward, the algebraic
signs apply to the reverse situation, i.e. plus for dis-
engaging and minus for engaging.