•
•
•
•
Option
Function
[5]
DC brake in-
verse
Inverted input for DC brake (NC). Stops motor by energizing it with a DC current for a certain time period.
See
parameter 2-01 DC Brake Current
to
parameter 2-03 DC Brake Cut In Speed [RPM]
. The function is only
active when the value in
parameter 2-02 DC Braking Time
is different from 0. Logic 0
⇒
DC brake.
[6]
Stop inverse
Stop inverted function. Generates a stop function when the selected terminal goes from logical level 1 to
logical level 0.
The stop is performed according to the selected ramp time:
Parameter 3-42 Ramp 1 Ramp Down Time
,
Parameter 3-52 Ramp 2 Ramp Down Time
,
Parameter 3-62 Ramp 3 Ramp down Time
, and
Parameter 3-72 Ramp 4 Ramp Down Time
.
N O T I C E
When the drive is at the torque limit and has received a stop command, it may not stop by itself. To
ensure that the drive stops, configure a digital output to
[27] Torque limit and stop
. 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
If a pulse is applied for minimum 2 ms, the motor starts. The motor stops when stop inverse is activated,
or a reset command (via DI, bus, or LCP) is given.
[10] Reversing
(Default digital input 19): Change the direction of motor shaft rotation. Select logic 1 to reverse. The re-
versing signal only changes the direction of rotation. It does not activate the start function. Select both
directions in
parameter 4-10 Motor Speed Direction
. 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 clockwise direction.
[13] Enable start re-
verse
Disengages the clockwise movement and allows counterclockwise direction.
[14] Jog
(Default digital input 29): Activate jog speed. See
parameter 3-11 Jog Speed [Hz]
.
[15] Preset refer-
ence on
Shifts between external reference and preset reference. It is assumed that
[1] External/preset
has been
selected in
parameter 3-04 Reference Function
. Logic 0 = external reference active; logic 1 = 1 of the 8
preset references is active.
[16] Preset ref bit 0
Preset reference bit 0, 1, and 2 enable a choice between 1 of the 8 preset references according to
[17] Preset ref bit 1
Same as
[16] Preset ref bit 0
.
[18] Preset ref bit 2
Same as
[16] Preset ref bit 0
.
Table 329: Preset Reference Bit
Preset ref. bit
2
1
0
Preset ref. 0
0
0
0
Preset ref. 1
0
0
1
Preset ref. 2
0
1
0
AU275636650261en-000101 / 130R0334
180 | Danfoss A/S © 2022.12
Parameter Descriptions
VLT AutomationDrive FC 301/302
Programming Guide
Summary of Contents for VLT AutomationDrive FC 301
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