[12] Enable
start
forward
Disengages the counterclockwise movement
and allows clockwise direction.
[13] Enable
start
reverse
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
reference
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
.
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
Table 3.16 Preset Reference Bit
[19] Freeze
ref
Freezes the actual reference, which is now the
point of enable/condition to be used for
[21] Speed
up
and
[22] Speed down
. If speed up/speed down is
used, the speed change always follows ramp 2
(
parameter 3-51 Ramp 2 Ramp Up Time
and
parameter 3-52 Ramp 2 Ramp Down Time
) in the
range 0–
parameter 3-03 Maximum Reference
.
[20] Freeze
output
Freezes the actual motor frequency (Hz), which is
now the point of enable/condition to be used for
[21] Speed up
and
[22] Speed down
. If speed up/
speed down is used, the speed change always
follows ramp 2 (
parameter 3-51 Ramp 2 Ramp Up
Time
and
parameter 3-52 Ramp 2 Ramp Down Time
)
in the range 0–
parameter 1-23 Motor Frequency
.
NOTICE
When freeze output is active, the frequency
converter cannot be stopped via a low
[8]
Start
signal. Stop the frequency converter
via a terminal programmed for
[2] Coasting
inverse
or
[3] Coast and reset inverse
.
[21] Speed
up
Select
[21] Speed up
and
[22] Speed down
for digital
control of the up/down speed (motor potenti-
ometer). Activate this function by selecting either
[19] Freeze ref
or
[20] Freeze output
. When speed
up/speed down is activated for less than 400 ms,
the resulting reference is increased/decreased by
0.1%. If speed up/speed down is activated for more
than 400 ms, the resulting reference follows the
setting in ramping up/down parameters 3-x1/3-x2.
Shut down
Catch up
Unchanged speed
0
0
Reduced by %-value
1
0
Increased by %-value
0
1
Reduced by %-value
1
1
Table 3.17 Shut Down/Catch Up
[22] Speed
down
Same as
[21] Speed up
.
[23] Set-up
select bit
0
Select
[23] Set-up select bit 0
or select
[24] Set-up
select bit 1
to select 1 of the 4 set-ups. Set
parameter 0-10 Active Set-up
to Multi Set-up.
[24] Set-up
select bit
1
(Default digital input 32): Same as
[23] Set-up
select bit 0
.
[26] Precise
stop inv.
Sends an inverted stop signal when the precise
stop function is activated in
parameter 1-83 Precise Stop Function
.
Precise stop inverse function is available for
terminals 18 or 19.
[27] Precise
start, stop
Use when
[0] Precise ramp stop
is selected in
parameter 1-83 Precise Stop Function
.
Precise start, stop is available for terminals 18
and 19.
Precise start ensures that the rotor turning angle
from standing still to reference is the same for
each start (for same ramp time, same setpoint).
This function is the equivalent to the precise
stop where the rotor turning angle from
reference to standing still is the same for each
stop.
When using
parameter 1-83 Precise Stop Function
option
[1] Cnt stop with reset
or
[2] Cnt stop w/o
reset
:
The frequency converter needs a precise stop-
signal before reaching the value of
parameter 1-84 Precise Stop Counter Value
. If this
signal is not supplied, the frequency converter
does not stop when the value in
parameter 1-84 Precise Stop Counter Value
is
reached.
Trigger precise start, stop by a digital input. The
function is available for terminals 18 and 19.
[28] Catch up
Increases reference value by percentage
(relative) set in
parameter 3-12 Catch up/slow
Down Value
.
[29] Slow
down
Reduces reference value by percentage (relative)
set in
parameter 3-12 Catch up/slow Down Value
.
Parameter Descriptions
VLT
®
AutomationDrive FC 301/302
100
Danfoss A/S © 10/2018 All rights reserved.
MG33MP02
3
3
Summary of Contents for VLT AutomationDrive FC 302
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