Danfoss VLT Decentral FCD 300, Руководство пользователя

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Decentral Solutions
Programming, FCD
300
NOTE
If Freeze output is active the variable
frequency drive can only be stopped if
you select Motor coast , Quick stop or
DC braking via a digital input.
Speed up and Slow down are selected if digital
control of the up/down speed is required. This
function is only active if Freeze reference or Freeze
output frequency has been selected.
If Speed up is active the reference or output frequency
will be increased, and if Slow down is active the
reference or output frequency will be reduced. The
output frequency is changed via the preset ramp
times in parameters 209-210 Ramp 2 .
One pulse (logic ’ 1 ’ minimum high for 14 ms
and a minimum break time of 14 ms) will lead
to a speed change of 0.1 % (reference) or 0.1
Hz (output frequency). Example:
Term.
29
Term.
33
Freeze ref/
freeze outp. Function
0 0 1 No speed change
0 1 1 Speed up
1 0 1 Slow down
1 1 1 Slow down
Freeze reference can be changed even if the variable
frequency drive has stopped. The reference will also
be saved if the AC lines 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 (parameters
209-210) 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.
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.
Delayed speed change , if the function is selected
and activated from the Profibus, the next reference
change will be delayed until a sensor has changed and
a timer is expired. For stopping the reference should
be set to zero. The sensors can be connected to
terminals 29 and/or 33. If two sensors are connected
the sensor is selected by either bit 1 or bit 2 of the
application control word. See also VLT 2800/FCM
300/FCD 300 Profibus DPV1, MG.90.AX.YY .
Precise start/stop is selected to obtain a high degree of
accuracy when a start and stop command is repeated.
Pulse reference is selected if the reference
signal applied is a pulse train (frequency). 0 Hz
corresponds to parameter 204 Minimum reference,
Ref
MIN
. The frequency set in parameter 327/328
Pulse Max 33/29 corresponds to parameter 205
Maximum reference Ref
MAX
.
Pulse feedback is selected if the feedback signal
used is a pulse train (frequency). In parameter
327/328 Pulse Max 33/29 the maximum pulse
feedback frequency is set.
Pulse input is selected if a specific number of pulses
must lead to a Precise stop , see parameter 343
Precise stop and parameter 344 Counter value .
✭
= factory setting. () = display text [] = value for use in communication via serial communication port
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