Danfoss VLT AutomationDrive FC 300 Design Manual page 167

FC 300 Design Guide
the quick stop ramp time (par. 3-81). When
the motor stops, the shaft is in free mode.
Logic '0' => Quick-stop.
DC brake inverse
•
braking (NC). Stops the motor by energizing
it with a DC for a certain time period. 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 inverse [6]: Stop Inverted function.
•
Generates a stop function when the selected
terminal goes from logical level '1' to '0'. The
stop is performed according to the selected 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 by
itself. To ensure that the adjustable frequency
drive stops, configure a digital output to "Torque
limit stop [27]" and connect this digital output to
a digital input that is configured 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 Digital input 19).
Changes the direction of motor shaft rotation.
Select Logic "1" to reverse. The reversing signal
only changes the direction of rotation. It does
not activate the start 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. Signals on
start are not allowed at the same time.
• Enable start forward
motor shaft is only to rotate clockwise at start.
Enable start reverse
•
shaft is only to rotate counterclockwise at start.
Jog [14] (Default Digital input 29): Is used for
•
shifting between external reference and preset
reference. You must select External/preset [2]
in par. 2-14. Logic '0' = external references
active; Logic '1' = one of the four references
is active according to the table below
* default setting ( ) display text
How to Program
[5]: Inverted input for DC
[12]: Is used if the
[13]: Is used if the motor
[ ] value for use in communication via serial communication port
MG.33.B3.22 - VLT is a registered Danfoss trademark
Preset ref bit 0 [16]: Preset ref. bit 0,1, and
•
2 enables a choice between one of the eight
preset references according to the table below.
Preset ref bit 1 [17]: Same as Preset
•
ref bit 0 [16].
Out of feedback range
•
range is set in par. Xxxx
Present ref. bit
Preset ref. 0
Preset ref. 1
Preset ref. 2
Preset ref. 3
Preset ref. 4
Preset ref. 5
Preset ref. 6
Preset ref. 7
Freeze reference [19]: Freezes the actual
•
reference. The frozen reference is now the point
of enable/condition for Speed up and Slow to
be used. If Speed up/Slow is used, the speed
change always follows ramp 2 (par. 3-51 and
3-52) in the range 0 - par. 3-03.
Freeze output [20]: Freezes the actual motor
•
frequency (Hz). The frozen motor frequency is
now the point of enable/condition for Speed up
and Slow to be used. If Speed up/Slow is used,
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 selecting either Freeze
reference or Freeze output.
When Speed up is activated for less than 400
msec. the resulting reference will be increased
by 0.1 %. If Speed up is activated for more than
[18]: The feedback
2 1 0
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
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