Danfoss AKD 2800, Быстрая настройка, Страница: 25 / 77

AKD 2800
Programming
104 Motor frequency, f
M,N
). It is assumed that the
output current will not reach the current limit (set
in parameter 221 Current limit I
LIM
).
Description of choice:
Set the required ramp-up time.
208 Ramp-down time 1
(RAMP DOWN TIME 1)
Value:
0.02 - 3600.00 sec
✭
1.00 sec
Function:
The ramp-down time is the deceleration time
from the rated motor frequency f
M,N
(parameter
104 Motor frequency, f
M,N
) to 0 Hz, provided
no overvoltage arises in the inverter because of
generating operation of the motor.
Description of choice:
Set the required ramp-down time.
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.
✭
= factory setting. () = display text [] = value for use in communication via serial communication port
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