Danfoss VLT AutomationDrive FC 301 Programming Manual page 139

VLT AutomationDrive FC 301/302
Programming Guide
Parameter 3-33 Sync Mode & Start Behavior
Table 215: Parameter 3-33 Sync Mode & Start Behavior
3-33 Sync Mode & Start Behavior
Default value: [0] Relative Sync
Conversion index: -
This parameter is only available with software version 48.XX.
Select the type of synchronization and start mechanism for synchronization mode. Marker synchronization is enabled when options
[10] Marker Shortest, [11] Marker Catch Up, or [12] Marker Slow Down is selected.
Op- Name Description
tion
[0]* Relative The follower position is locked to the master position at start, then Enable Reference is active.
Sync.
[1] Relative The position of the follower drive stays locked to the master drive's position when Enable Reference is ac-
Re-Sync. tive, though the drive is stopped or coasted. For example, when the drive is restarted after an alarm, the
follower drive realigns with the master drive.
[2] Absolute The position of the follower drive is always locked to the position of the master drive.
Sync.
[10] Marker Controls the behavior of the 1
Shortest
pends on parameter 3-34 Marker Distance:
•
When parameter 3-34 Marker Distance = 0 (OFF), the 1
marker.
• When parameter 3-34 Marker Distance > 0, the 1
marker to accelerate or decelerate to the correct position by a maximum of half the marker distance.
[11] Marker Select this option to accelerate the follower to reach the position of the previous master marker during
Catch Up marker synchronization.
[12] Marker Select this option to decelerate the follower to align with the subsequent master marker during marker
Slow synchronization.
Down
[13] Mar. Dis. Select this option to measure the follower marker distance while synchronizing without marker correction,
Meas. Fo. when the master is running. The measured follower marker distance is set in parameter 3-34 Marker Dis-
tance.
[14] Mar. Dis. Select this option to measure master marker distance while synchronizing without marker correction,
Meas. Ma.
when the master is running. The measured master marker distance is set in parameter 3-34 Marker Distance.
[15] Mar. meas. Continuous measurement of distance between master and follower marker where the behavior depends
shortest
on parameter 3-34 Marker Distance.
• Parameter 3-34 Marker Distance = 0 (OFF): Distance is measure between the 1
1
tance will then be measured between every following pairs of master and follower markers.
•
Parameter 3-34 Marker Distance > 0: At every follower marker distance is measured to the closest mas-
ter marker.
The result of the measurement is updated in parameter 18-24 Marker Pos. Offset in position units as defined
in parameter group 17-0* Position Scaling.
Danfoss A/S © 2022.12
Parameter type: Option
Data type: Uint8
N O T I C E
st
marker synchronization. Marker synchronization start-up behavior de-
st
master marker no matter which one comes first, this is considered as the 1
Setup:
Change during operation:
st
follower marker is aligned with the 1
st
follower marker is aligned with the closest master
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Parameter Descriptions
st
master
st
follower marker and the
st
pair of markers. Dis-