Danfoss VLT AutomationDrive FC 300 Design Manual page 155

FC 300 Design Guide
3-1* References
"
Parameters for setting up the reference resources.
Select preset reference(s) you want to obtain when
using the preset references. Select Preset ref.
enable on the corresponding digital inputs.
3-10 Preset Reference
Array [8]
Range:
-100.00 - 100.00 %
Function:
Eight different preset references (0-7) can be
programmed via array programming. The preset
reference is stated as a percentage of the value
Ref (par. 3-03) or as a percentage of the other
MAX
external references. If a Ref
programmed, the preset reference as a percentage
is calculated on the basis of the difference between
Ref and Ref . Afterwards, the value is added
MAX MIN
to Ref . Select Preset ref enable on the matching
MIN
digital inputs when using preset references.
3-12 Catch up/slow Down Value
Range:
0.00 - 100.00%
Function:
Enables entering a percentage value (relative)
which is either added to or deducted from the
actual reference. If Catch up is selected via one
of the digital inputs (par. 5-10 to par. 5-15),
the percentage (relative) value is added to
the total reference. If Slow down is selected
via one of the digital inputs (par. 5-10 to
par. 5-15), the percentage (relative) value is
deducted from the total reference.
default setting ( )
*
How to Programme
*
0.00%
0 (Par. 3-02) is
MIN
*
0.00%
display text [ ] value for use in communication via serial communication port
MG.33.B4.02 - VLT is a registered Danfoss trademark
Extended functionality can be obtained with the
DigiPot function. See parameter group 3-9*.
3-13 Reference Site
Option:
*
Linked to Hand / Auto
Remote
Local
Function:
Decides which resulting reference is active. If
Linked to Hand / Auto [0] is selected, the resulting
reference depends on whether the drive is in Hand
or Auto mode. In Hand mode the local reference
is used, and in Auto mode the remote reference is
used. Select Remote [1] to use the remote reference
in both Hand mode and Auto mode. Select Local [2]
to use the local reference in both Hand mode and
Auto mode (par. 3-14) Preset Relative Reference.
3-14 Preset Relative Reference
Range:
-100.00 - 100.00 %
Function:
Defines a fixed value (in %) added to the
variable value (defined in par. 3-18 and called
Y in the illustration below). This sum (Y) is
multiplied with the actual reference (called X in
the illustration below) and the result is added
to the actual reference (X+X*Y/100).
3-15 Reference Resource 1
Option:
No function
*
Analog input 53
Analog input 54
Frequency input 29 (FC 302 only)
Frequency input 33
Local bus reference
Digital pot.meter
Function:
Adding up to three different reference signals
to compose the actual reference.
[0]
[1]
[2]
*
0.00%
[0]
[1]
[2]
[7]
[8]
[11]
[20]
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