Danfoss VLT AutomationDrive FC 301 Programming Manual page 270

Parameter Descriptions
17-91 Relative Position Mode
Option:
3 3
17-92 Position Control Selection
Option:
[0] No Operation
*
[1] Relative
Position
[2] Enable
Reference
17-93 Master Offset Selection
Option:
[0] Absolute
*
Enabled
268
®
VLT AutomationDrive FC 301/302
Function:
frequency converter executes the
new positioning command
immediately without completing
the previous positioning.
The new target is calculated with
the formula: New target = actual
position + position reference.
Function:
NOTICE
This parameter is only
available with software version
48.XX.
This parameter allows to select the
position control mode without
using a digital input signal or a
fieldbus bit.
Use a digital input signal or a
fieldbus bit to activate the enable
reference mode and the relative
position mode.
This option selects the relative
position mode permanently. All
positioning commands are
considered to be relative. Toggling
option [113] Enable Reference on a
digital input or the enable reference
fieldbus bit triggers relative
positioning.
This option selects the enable
reference mode permanently. Any
new position reference triggers an
absolute positioning command with
the selected position reference as
target. This option cannot be used
with relative positioning.
Function:
NOTICE
This parameter is available
only with software version
48.XX.
Select the behavior of the master
offset in synchronization mode.
The frequency converter adds the
master offset (parameter 3-26 Master
Offset) to the position at synchroni-
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17-93 Master Offset Selection
Option: Function:
zation start. The offset command is
executed at every new synchroni-
zation start.
[1] Absolute The frequency converter adds the
master offset (parameter 3-26 Master
Offset) to the position at synchroni-
zation start. The offset command is
executed with every enable master
offset signal.
[2] Relative The frequency converter adds the
master offset (parameter 3-26 Master
Offset) to the actual synchronization
position with every enable master
offset signal.
[3] Selection The master offset
(parameter 3-26 Master Offset) is
relative or absolute depending on
the relative position signal on a
digital input or the fieldbus bit.
[4] Relative Home The master offset
Sensor (parameter 3-26 Master Offset) is
relative to the home sensor signal.
The offset command is executed
with the next home sensor signal
when the enable master offset
signal is active.
[5] Relative Touch The master offset
Sensor (parameter 3-26 Master Offset) is
relative to the touch sensor signal.
The offset command is executed
with the next touch sensor signal
when the enable master offset
signal is active.
17-94 Rotary Absolute Direction
Option: Function:
NOTICE
This parameter is available
only with software version
48.XX.
Select the rotation direction for the
absolute position mode when
parameter 17-76 Position Axis Mode
is set to [1] Rotary Axis. To use this
parameter, set parameter 4-10 Motor
Speed Direction to [2] Both
directions.
[0] Shortest The frequency converter selects the
*
rotation direction that provides the
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