Synchronizing controller
MG.10.N4.02 - VLT is a registered Danfoss trademark 31
749
Virtual master acceleration: Enter here the acceleration for the virtual master in Hz/s.
Virtual master acceleration =
][
][
st
HzncyPulsfreque
Example: The virtual master must correspond to an encoder with 1024 inc/rotation. The
maximum speed of 25 encoder rotations per second must be attained in 1 second.
Virtual master acceleration =
s
v
Incr
s
1
.Re
.
1024*
1
25
= 25600 Hz/s
750
Virtual master maximum speed: Enter here the maximum speed of the virtual master
in Hz.
Virtual master maximum speed =
s
v
v
Increments
.Re
*
.Re
Example: The maximum virtual master signal must correspond to an incremental encoder
with 1024 inc/rotation at a rotational speed of 50 rotations/s.
Virtual master maximum speed =
1024
1
50
*
.
s
= 51200 1/s
751
Marker window slave: Here you can enter how large the permitted tolerance for the
occurrence of the marker is. The factory setting “0” means all markers are used. At every
other setting only those markers are accepted which are within the window.
Example: Marker interval = 30000 and marker window = 1000. Only markers with an
interval of 29000 to 31000 is accepted.
NOTE:
This parameter is only used in marker synchronizing mode (parameter 725 = 2 or 5).
752
Marker window master: Here you can enter how large the permitted tolerance for the
occurrence of the marker is. The factory setting “0” means all markers are used. At every
other setting only those markers are accepted which are within the window.
Example: Marker interval = 30000 and marker window = 1000. Only markers with an
interval of 29000 to 31000 is accepted.
NOTE:
This parameter is only used in marker synchronizing mode (parameter 725 = 2 or 5).
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