Danfoss VLT AutomationDrive FC 301 Programming Manual page 201

Parameter Descriptions
17-91 Relative Position Mode
Option: Function:
[0] Target The frequency converter uses the latest
Position target position as reference for the new
*
positioning command. The frequency
converter executes the new positioning
command immediately without completing
the previous positioning.
The new target is calculated with the
formula: New target = previous target +
position reference.
[1] Buffered The frequency converter uses the latest
Target Pos. target position as reference for the new
positioning command. The frequency
converter executes the new positioning
command when it completes the previous
command. Only 1 positioning command can
be buffered at a time.
[2] Commanded The frequency converter uses the
Position commanded position as reference for the
new positioning command. The frequency
converter executes the new positioning
command immediately without completing
the previous positioning.
The new target is calculated with the
formula: New target = commanded position
+ position reference.
[3] Actual The frequency converter uses the actual
Position position as reference for the new
positioning command. The 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.
17-92 Position Control Selection
Option: 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.
[0] No Use a digital input signal or a fieldbus bit to
*
operation activate the enable reference mode and the
relative position mode.
[1] Relative This option selects the relative position mode
Position permanently. All positioning commands are
considered to be relative. Toggling option
[113] Enable Reference on a digital input or the
MG33MO02
Programming Guide
17-92 Position Control Selection
Option:
[2] Enable
Reference
17-93 Master Offset Selection
Option:
[0] Absolute
Enabled
*
[1] Absolute
[2] Relative
[3] Selection
[4] Relative
Home
Sensor
[5] Relative
Touch
Sensor
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Function:
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
synchronization start. The offset command is
executed at every new synchronization start.
The frequency converter adds the master offset
(parameter 3-26 Master Offset) to the position at
synchronization start. The offset command is
executed with every enable master offset signal.
The frequency converter adds the master offset
(parameter 3-26 Master Offset) to the actual
synchronization position with every enable
master offset signal.
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.
The master offset (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.
The master offset (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.
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