FC 300 Design Guide
How to Program
the q uick stop ramp time (par. 3-81). When
the motor s tops, the shaft is in free mode.
Logic ’0’ => Quick-stop.
• DC brake inverse [5]: Inverted input for DC
braking (NC). Stops the motor by energizing
it with a DC for a certain time perio d. See
par. 2-01 to par. 2-03. The function is only
active when the value in par. 2-02 is different
from 0. Logic ’0’ => DC braking.
• Stop inver s e [6]: S top Inverted function.
Generates a stop function when the selected
terminal goes from logical level ’ 1’ to ’0’. The
stop is performed according to the selecte d ramp
time (par. 3-42, par. 3-52, par. 3-62, par. 3-72).
NOTE
When the adjustable frequency drive
is at the torque limit and has received
a stop command, it may not stop b y
itself. To ensure that the adjustable frequency
drive stops, configure a digital output to "Torque
limit stop [27]" and connect this d igital output to
a digital input that is configu red as coast.
• Start [8] (Default Digital input 18): Select
start for a start/stop command. Logic ’1’
= start, logic ’0’ = stop.
• Latched start [9]: The motor starts if a
pulse is applied for min. 2 ms. The motor
stops if you activate Stop inverse.
• Reverse [10]: (Default Dig ital input 19).
Changes the direction of motor shaft rotatio n.
Select Logic "1" to reverse. The reversing si
gnal
only changes the direction of rotation. It does
not activate the sta rt function. Select both
directions in par. 4-10. The function
is not
active in Torque control, speed feedback.
• Start reverse [11]: Used for start/stop and
for reversing on the same wire. Signa
ls on
startarenotallowedatthesametime.
• Enable start forward [12]:Isusedifthe
motor shaft is only to rotate clo
ckwise at start.
• Enable start reverse [13]:Isusedifthemotor
shaft is only to rotate counterclockwise at start.
• Jog [14] (Default Digital input 2
9): Is used for
shifting between external reference a nd pre set
reference. You must select External/preset [2]
in par. 2-14. Logic ’0’ = ext
ernal references
active; Logic ’1’ = one of the four references
is active according to the table below
• Presetrefbit0[16]: Preset ref. bit 0,1, and
2 e nables a choice between one of the eight
preset references acc ording to the t able below.
• Preset ref bit 1 [17]:SameasPreset
ref bit 0 [16].
• Out of f eedback range [18]:Thefeedback
range is set in par. Xxxx
Present ref. bit 2 1 0
Preset ref. 0 0 0 0
Preset ref. 1 0 0 1
Preset ref. 2 0 1 0
Preset ref. 3 0 1 1
Preset ref. 4 1 0 0
Preset ref. 5 1 0 1
Preset ref. 6 1 1 0
Preset ref. 7 1 1 1
• Freeze reference [19]:Freezestheactual
reference. The frozen reference is now the point
of enable/condition for Speed up and Slow to
be used. If Sp eed up/Slow is used, the speed
change always follows ramp 2 (par. 3-5 1 and
3-52) in the range 0 - par. 3-03.
• Freeze output [20]:Freezestheactualmotor
frequency (Hz). The frozen motor frequency is
now the point of enable/condition for Speed up
andSlowtobeused. IfSpeedup/Slowisused,
the speed change always follows ramp 2 (par.
3-51 and 3-52) in the range 0 - par. 1-23.
NOTE
If Freeze output is active, It is
not possible to stop the adjustable
frequency drive via a low "start [13]"
signal. Stop the adjustable frequency drive
via a terminal programmed for Coast inverse
[2] or Coast and reset inv.
• Speed up [21 ] : Select Speed up and Slow
if digital control of the up/down speed is
desired (motor potentiometer). Activate
this function by se lecting eithe r Free ze
reference or Freeze output.
When Speed up is activated for less than 400
msec. the re sulting re ference w ill be i
ncreased
by 0.1 %. If Speed up is activated for more than
*
default setting ()display text []value for use in communication via serial communication port
167
MG.33.B
3.22 - VLT is a registered Danfoss trademark
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