All digital inputs can be programmed to these functions:
[0]
No operation
No reaction to signals transmitted to the terminal.
[1]
Reset
Resets frequency converter after a TRIP/ALARM. Not all alarms can be reset.
[2]
Coast inverse
(Default Digital input 27): Coasting stop, inverted input (NC). The frequency converter leaves the
motor in free mode. Logic ‘0’ => coasting stop.
[3]
Coast and reset inverse
Reset and coasting stop Inverted input (NC). Leaves motor in free mode and resets frequency con-
verter. Logic ‘0’ => coasting stop and reset.
[4]
Quick stop inverse
Inverted input (NC). Generates a stop in accordance with quick-stop ramp time set in par.
C-23 Quick
Stop Decel Time
. When motor stops, the shaft is in free mode. Logic ‘0’ => Quick-stop.
[5]
DC-brake inverse
Inverted input for DC braking (NC). Stops motor by energizing it with a DC current for a certain time
period. See par. B-01 DC
Brake Current
to par. B-03 DC
Brake Cut In Speed [RPM]
. The function is
only active when the value in par. B-02 DC
Braking Time
is different from 0. Logic ’0’ => DC braking.
[6]
Stop inverse
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. F-08 Decel
Time 1
, par.
E-11 Decel
Time 2
, par. E-13 Decel
Time 3
, par. E-15 Decel
Time 4
).
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.
[8]
Start
(Default Digital input 18): Select start for a start/stop command. Logic ‘1’ = start, logic ‘0’ = stop.
[9]
Latched start
The motor starts, if a pulse is applied for min. 2 ms. The motor stops when Stop inverse is activated.
[10]
Reversing
(Default Digital input 19). Change 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. H-08 Reverse
Lock
. The function is not active in process closed loop.
[11]
Start reversing
Used for start/stop and for reversing on the same wire. Signals on start are not allowed at the same
time.
[12]
Enable start forward
Disengages the counterclockwise movement and allows for the clockwise direction.
[13]
Enable start reverse
Disengages the clockwise movement and allows for the counterclockwise direction.
[14]
Jog
(Default Digital input 29): Use to activate jog speed. See par. C-20 Jog
Speed [Hz]
.
[15]
Preset reference on
Shifts between external reference and preset reference. It is assumed that
External/preset
[1] has
been selected in par. F-54 Reference
Function
. Logic '0' = external reference active; logic '1' = one
of the eight preset references is active.
[16]
Preset ref bit 0
Preset ref. bit 0,1, and 2 enables a choice between one of the eight preset references according to
the table below.
[17]
Preset ref bit 1
Same as Preset ref bit 0 [16].
[18]
Preset ref bit 2
Same as Preset ref bit 0 [16].
Preset 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
5. Parameter Set-up
FC 300 Extended Relay Card Operating In-
structions
12
MI.33.G2.02 - VLT
®
is a registered Danfoss trademark
5
