Danfoss FC 300 Design Manual page 166

FC 300 Design Guide
Functions dedicated to only one digital input are
stated in the associated parameter.
All digital inputs can be programmed to these
functions:
• No operation
verter will not react to signals transmitted
to the terminal.
• Reset [1]: Reset the frequency converter
after a TRIP/ALARM. Not all alarms can be
reset.
• Coast inverse [2]
27): Coasting stop, inverted input (NC).
The frequency converter leaves the motor
in free mode. Logic '0' => coasting stop.
• Coast and reset inverse
coasting stop Inverted input (NC). The
frequency converter leaves the motor in
free mode and resets the drive. Logic '0'
=> coasting stop and reset.
• Quick stop inverse
(NC). Generate a stop in accordance with
the quick-stop ramp time set in par. 3-81.
When the motor stops, the shaft is in free
mode. Logic '0' => Quick-stop.
• DC-brake inverse
for DC braking (NC). Stops the motor by
energizing it with a DC current for a cer-
tain 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. Log-
ic '0' => DC braking.
• Stop inverse
tion. Generate 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).
NB!
When the frequency converter is at the
torque limit and has received a stop
command, it may not stop by itself. To
ensure that the frequency converter
stops, configure a digital output to
Torque limit & stop [27] and connect
this digital output to a digital input that
is configured as coast.
factory setting
166
How to Programme
[0]: The frequency con-
(Default Digital input
[3]: Reset and
[4]: Inverted input
[5]: Inverted input
[6]:Stop Inverted func-
() display text []
MG.33.B7.02 - VLT is a registered Danfoss trademark
• Start [8]
lect start for a start/stop command. Logic
'1' = start, logic '0' = stop.
• Latched start
pulse is applied for min. 2 ms. The motor
stops when Stop inverse is activated.
• Reversing
19). Change the direction of motor shaft
rotation. Select Logic '1' to reverse. The
reversing signal only changes the direc-
tion of rotation. It does not activate the
start function. Select both directions in
par. 4-10 Motor Speed Direction. The
function is not active in Speed closed
loop [1] or Torque [2] control in par. 1-00
Configuration Mode.
• Start reversing
and for reversing on the same wire. Sig-
nals on start are not allowed at the same
time.
• Enable start forward
motor shaft must rotate clockwise at
start.
• Enable start reverse
motor shaft must rotate counter-clock-
wise at start.
• Jog [14]
to activate jog speed. See par. 3-11.
• Preset reference on [15]:
ing between external reference and pre-
set reference. It is assumed that External/
preset [1] has been selected in par. 3-04.
Logic '0' = external reference active; logic
'1' = one of the eight preset references is
active.
• Preset ref bit 0
and 2 enables a choice between one of the
eight preset references according to the
table below.
• Preset ref bit 1
bit 0 [16].
• Preset ref bit 2
[18]: Same as Preset ref bit 0 [16].
value for use in communication via serial communication port
(Default Digital input 18): Se-
[9]: The motor starts, if a
[10]: (Default Digital input
[11]: Use for start/stop
[12]: Use if the
[13]: Use if the
(Default Digital input 29): Use
Use for shift-
[16]: Preset ref. bit 0,1,
[17]: Same as Preset ref
[18]: Preset ref bit 2