Danfoss VLT 5000 - Figure 23: Initial Start-Up with Marker Synchronization; Marker Correction During Operation; Syncstart to a Running Master after Power on; Function Diagrams for Marker Synchronization

Synchronizing controller
60 MG.10.N4.02 - VLT is a registered Danfoss trademark
Function diagrams for marker synchronization
SyncStart to a running master after Power ON
If the slave is synchronized to a running master drive, the slave automatically synchronizes its position
to the master. After at least one slave marker and one master marker have been detected, the marker
compensation comes into effect.
Figure 23: Initial start-up with marker synchronization
Marker correction during operation
During operation, marker correction is always carried out when the markers is detected. This ensures
optimum synchronization, no matter whether the gear ratios are not accurate or there is a slip.