Danfoss VLT AutomationDrive FC 300 Programming Manual page 80

Parameter Descriptions
Digital input function
Safe Option Reset
Table 3.12 Digital Input Function
FC 300 standard terminals are 18, 19, 27, 29, 32 and 33.
3 3
MCB 101 terminals are X30/2, X30/3 and X30/4.
Terminal 29 functions as an output only in FC 302.
Functions dedicated to only one digital input are stated in
the associated parameter.
All digital inputs can be programmed to these functions:
[0] No
operation
[1] Reset
[2] Coast
inverse
[3] Coast and
reset inverse
[4] Quick stop
inverse
[5] DC-brake
inverse
[6] Stop inverse Stop Inverted function. Generates a stop
78
®
VLT
Select Terminal
[100]
No reaction to signals transmitted to the
terminal.
Resets frequency converter after a TRIP/
ALARM. Not all alarms can be reset.
(Default Digital input 27): Coasting stop,
inverted input (NC). The frequency converter
leaves the motor in free mode. Logic '0'
⇒coasting stop.
Reset and coasting stop Inverted input (NC).
Leaves motor in free mode and resets
frequency converter. Logic '0' ⇒ coasting stop
and reset.
Inverted input (NC). Generates a stop in
accordance with quick-stop ramp time set in
3-81 Quick Stop Ramp Time. When motor
stops, the shaft is in free mode. Logic '0' ⇒
Quick-stop.
Inverted input for DC braking (NC). Stops
motor by energizing it with a DC current for
a certain time period. See 2-01 DC Brake
Current to 2-03 DC Brake Cut In Speed [RPM].
The function is only active when the value in
2-02 DC Braking Time is different from 0.
Logic '0' => DC braking.
function when the selected terminal goes
from logical level '1' to '0'. The stop is
performed according to the selected ramp
time (3-42 Ramp 1 Ramp Down Time,
3-52 Ramp 2 Ramp Down Time, 3-62 Ramp 3
Ramp down Time, 3-72 Ramp 4 Ramp Down
Time).
NOTE
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.
MG33MG02 - VLT
AutomationDrive Programming Guide
[8] Start
[9] Latched
start
[10] Reversing
[11] Start
reversing
[12] Enable start
forward
[13] Enable start
reverse
[14] Jog
[15] Preset
reference on
[16] Preset ref
bit 0
[17] Preset ref
bit 1
[18] Preset ref
bit 2
Preset 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
Table 3.13 Preset Ref. Bit
[19] Freeze
ref
[20] Freeze
output
®
is a registered Danfoss trademark
(Default Digital input 18): Select start for a
start/stop command. Logic '1' = start, logic '0'
= stop.
The motor starts, if a pulse is applied for min.
2ms. The motor stops when Stop inverse is
activated or a reset command (via DI) is
given.
(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 4-10 Motor Speed Direction. The
function is not active in process closed loop.
Used for start/stop and for reversing on the
same wire. Signals on start are not allowed at
the same time.
Disengages the counterclockwise movement
and allows for the clockwise direction.
Disengages the clockwise movement and
allows for the counterclockwise direction.
(Default Digital input 29): Use to activate jog
speed. See 3-11 Jog Speed [Hz].
Shifts between external reference and preset
reference. It is assumed that [1] External/preset
has been selected in 3-04 Reference Function.
Logic '0' = external reference active; logic '1'
= one of the eight preset references is active.
Preset ref. bit 0,1, and 2 enables a choice
between one of the eight preset references
according to Table 3.16.
Same as Preset ref bit 0 [16].
Same as Preset ref bit 0 [16].
2 1
0 0
0 0
0 1
0 1
1 0
1 0
1 1
1 1
Freezes the actual reference, which is now the
point of enable/condition for Speed up and Speed
down to be used. If Speed up/down is used, the
speed change always follows ramp 2 (3-51 Ramp 2
Ramp Up Time and 3-52 Ramp 2 Ramp Down Time)
in the range 0 - 3-03 Maximum Reference.
Freezes the actual motor frequency (Hz), which is
now the point of enable/condition for Speed up
0
0
1
0
1
0
1
0
1