VLT
®
FCD Series
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
External/preset
to select whether a shift between
external references and preset references is required.
External reference is the sum of the analogue
references, pulse references and any references
from serial communication.
Description of choice:
If
Sum
[0] is selected, one of the adjusted
preset references (parameters 215-218
Preset
reference
) is summarized as a percentage of
the reference range (Ref
MIN
- Ref
MAX
), added
to the other external references.
If
Relative
[1] is selected, one of the added
preset references (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 digital 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 influence,
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 options.
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 remote-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 reference
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 reference
will be deducted from the remote-controlled reference.
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
maximum 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 short periods at a time. After the
load has been higher than I
INV.
, it must be ensured that
for a period the load is lower than I
INV.
Please note that
if the current limit is set at a lower value than I
INV.
, the
acceleration torque will be reduced to the same extent.
✭
= factory setting. () = display text [] = value for use in communication via serial communication port
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