Danfoss VLT 2800 User Manual

214 Reference function
(Ref function)
Value:
Sum (sum) [0]
Relative (relative) [1]
External/preset (external/preset) [2]
Function:
It is possible to define how preset references are to be
added to the other references; for this purpose, use
Sum or Relative. It is also possible by using the Exter-
nal/preset to select whether a shift between external
references and preset references is required.
External reference is the sum of the analogue refer-
ences, pulse references and any references from se-
rial communication.
Description of choice:
If Sum [0] is selected, one of the adjusted preset ref-
erences (parameters 215-218 Preset reference) is
summarized as a percentage of the reference range
(Ref
MIN
- Ref
MAX
), added to the other external referen-
ces.
If Relative [1] is selected, one of the added preset ref-
erences (parameters 215-218 Preset reference) is
summarized as a percentage of the sum of present
external references.
If External/preset [2] is selected, it is possible via a dig-
ital input to shift between external references or preset
references. Preset references will be a percentage
value of the reference range.
NB!
If Sum or Relative is selected, one of the
preset references will always be active. If
the preset references are to be without in-
fluence, they must be set to 0% (factory
setting).
215 Preset reference 1 (PRESET REF. 1)
216 Preset reference 2 (PRESET REF. 2)
217 Preset reference 3 (PRESET REF. 3)
218 Preset reference 4 (PRESET REF. 4)
Value:
-100.00% - +100.00%
0.00%
of the reference range/external reference
Function:
Four different preset references can be programmed
in parameters 215-218 Preset reference.
The preset reference is stated as a percentage of the
reference range (Ref
MIN
- Ref
MAX
) or as a percentage
of the other external references, depending on the
choice made in parameter 214 Reference function.
The choice between preset references can be made
via the digital inputs or via serial communication.
Preset ref., msb Preset ref. lsb
0 0 Preset ref. 1
0 1 Preset ref. 2
1 0 Preset ref. 3
1 1 Preset ref. 4
Description of choice:
Set the preset reference(s) that is/are to be the op-
tions.
219 Catch up/ Slow down reference
(Catch up/Slw dwn)
Value:
0.00 - 100% of the given reference
0.00%
Function:
In this parameter, the percentage value can be set
which will either be added to or deducted from the re-
mote-controlled references.
The remote-controlled reference is the sum of preset
references, analogue references, pulse reference and
any references from serial communication.
Description of choice:
If Catch up is active via a digital input, the percentage
value in parameter 219 Catch up/Slow down refer-
ence will be added to the remote-controlled reference.
If Slow down is active via a digital input, the percentage
value in parameter 219 Catch up/Slow down refer-
ence will be deducted from the remote-controlled ref-
erence.
221
Current limit, I
LIM
(current limit)
Value:
0 - XXX.X % of par. 105
160 %
Function:
In this parameter, the maximum output current I
LIM
is
set. The factory-set value corresponds to the maxi-
mum output current I
MAX
. If the current limit is to be
used as motor protection, set the rated motor current.
If the current limit is set above 100% (the rated output
current of the frequency converter, I
INV.
), the frequency
converter can only handle a load intermittently, i.e. for
= factory setting, () = display text, [] = value for use in communication via serial communication port
82 MG.27.E2.02 - VLT is a registered Danfoss trademark

Danfoss VLT 2800 Specifications

General

Brand	Danfoss
Model	VLT 2800
Category	DC Drives
Language	English