Marker Synchronizing; Figure 21: Control Behaviour With Marker Synchronization; Figure 22: Conveyor Belt With Marker Synchronization - Danfoss VLT 5000 Operating Instructions Manual

Marker synchronizing

Using Marker synchronizing you do not predefine the start position. The Marker will alter the position
during operation, as required.
Marker synchronizing is for example used to compensate for any undesired slip.
It appears from the diagram that the control accuracy depends on the master acceleration and on the
speed deviation between slave and master.
The following example shows the use of marker synchronization to compensate for friction slip that can
arise from dropping a box onto Conveyor belt 1. By means of marker correction in the form of object
recognition, the slave belt is controlled so that the product will always be placed right in the middle of
the box, even if the box itself is not centrally positioned in its conveyor compartment.
MG.10.N4.02 - VLT is a registered Danfoss trademark
Synchronizing controller
Figure 21: Control behavior with marker synchronization

Figure 22: Conveyor belt with marker synchronization

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