Danfoss AKD 2800, Quick Setup Manual, Page: 30 / 77

AKD 2800
Term.
29
Term.
33
Freeze ref/
freeze outp. Function
0 0 1 No speed change
0 1 1 Speed up
1 0 1 Speed down
1 1 1 Speed down
Freeze reference can be changed even if the frequency
converter has stopped. The reference will also be
saved if the mains are disconnected.
Catch-up/Slow-down is selected if the reference
value is to be increased or reduced by a
programmable percentage value set in parameter
219 Catch-up/Slow-down reference .
Slow-down Catch-up Function
0 0 Unchanged speed
0 1 Increase by % value
1 0 Reduce by % value
1 1 Reduce by % value
Ramp 2 is selected if a shift between ramp 1
(parameters 207-208) and ramp 2 (3 sec.) is required.
Logic
’
0
’
leads to ramp 1 and logic
’
1
’
leads to ramp 2.
Preset reference, lsb and Preset reference, msb
makes it possible to select one of the four preset
references, see the table below:
Preset ref.
msb
Preset ref.
lsb
Function
0 0 Preset ref. 1
0 1 Preset ref. 2
1 0 Preset ref. 3
1 1 Preset ref. 4
Preset reference on is used for shifting between
remote-controlled reference and preset reference.
It is assumed that External/preset [2] has been
selected in parameter 214 Reference function . Logic
’ 0 ’ = remote-controlled references are active, logic
’ 1 ’ = one of the four preset references is active,
as can be seen from the table above.
Thermistor is to be selected if a possibly integrated
thermistor in the motor is to be able to stop
the frequency converter if the motor overheats.
The cut-out value is 3 k .
If a motor features a Klixon thermal switch instead, this
can also be connected to the input. If motors operate
in parallel, the thermistors/thermal switches can be
connected in series (total resistance lower than 3 k ).
Parameter 128 Motor thermal protection must be
programmed for Thermistor warning [1] or Thermistor
trip [2] and the thermistor is to be connected between
a digital input and terminal 50 (+ 10 V supply).
Precise stop, inverse is selected to obtain a high
degree of accuracy when a stop command is repeated.
A logic 0 means that the motor speed is ramped
down to stop via the selected ramp.
Precise start/stop is selected to obtain a high degree of
accuracy when a start and stop command is repeated.
Pulse reference : Not used in AKD.
Pulse feedback : Not used in AKD.
Pulse input : Not used in AKD.
Selection of Setup, lsb and Selection of Setup,
msb gives the possibility to select one of the
four setups. It is, however, a condition that
parameter 004 is set to Multisetup .
Reset and start can be used as a start function.
If 24 V are connected to the digital input, this will
cause the frequency converter to reset and the motor
will ramp up to the preset reference.
Pulse counter start : Not used in AKD.
✭
= factory setting. () = display text [] = value for use in communication via serial communication port
MG.28.H2.02 -
30