VLT AQUA Low Harmonic Drive Instruction
Manual
[19]
Freeze ref
[20]
Freeze output
[21]
Speed up
[22]
Slow
[23]
Set-up select bit 0
[24]
Set-up select bit 1
[32]
Pulse input
[34]
Ramp bit 0
[36]
Line failure inverse
[52]
Run Permissive
[53]
Hand start
[54]
Auto-start
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
Freezes actual reference. The frozen reference is now the point of enable/condition for Speed up
and Slow to be used. If Speed up/down is used, the speed change always follows ramp 2 (par. 3-51
and 3-52) in the range 0 - par. 3-03
Freezes actual motor frequency (Hz). The frozen motor frequency is now the point of enable/con-
dition for Speed up and Slow to be used. If Speed up/down is used, the speed change always follows
ramp 2 (par. 3-51 and 3-52) in the range 0 - par. 1-23
NOTE!
When Freeze output is active, the adjustable frequency drive cannot be stopped
via a low 'start [13]' signal. Stop the adjustable frequency drive via a terminal
programmed for Coasting inverse [2] or Coast and reset, inverse [3].
For digital control of the up/down speed is desired (motor potentiometer). Activate this function by
selecting either Freeze reference or Freeze output. When Speed up is activated for less than 400
msec., the resulting reference will be increased by 0.1%. If Speed up is activated for more than 400
msec., the resulting reference will ramp according to Ramp 1 in par. 3-41.
Same as Speed up [21].
Selects one of the four set-ups. Set par. 0-10
Same as Set-up select bit 0 [23].
(Default Digital input 32)
Select Pulse input when using a pulse sequence as either reference or feedback. Scaling is done in
par. group 5-5*.
Select which ramp to use. Logic "0" will select ramp 1 while logic "1" will select ramp 2.
Line Failure
Activates par. 14-10
. Line failure inverse is active in the Logic "0" situation.
The input terminal, for which the Run permissive has been programmed must be logic "1" before a
start command can be accepted. Run permissive has a logic 'AND' function related to the terminal
START
which is programmed for
[8],
start running the motor, both conditions must be fulfilled. If Run Permissive is programmed on
multiple terminals, Run permissive needs only be logic '1' on one of the terminals for the function
to be carried out. The digital output signal for Run Request (
[20]) programmed in par. 5-3* Digital outputs, or par. 5-4* Relays, will not be affected by Run
Permissive.
A signal applied will put the adjustable frequency drive into hand mode as if button
LCP has been pressed and a normal stop command will be overridden. If disconnecting the signal,
the motor will stop. To make any other start commands valid, another digital input must be assigned
to Auto-Start and a signal applied to this. The
Off
impact. The
button on the LCP will override
On
Auto On
Hand Start
or
button to make
Start nor Auto-Start, the motor will stop regardless of any normal Start command applied. If signal
applied to both Hand Start and Auto-Start, the function will be Auto-Start. If pressing the
on the LCP, the motor will stop regardless of signals on
A signal applied will put the adjustable frequency drive into auto mode as if the LCP button
On
has been pressed. See also
Hand Start
®
MG.20.T1.22 - VLT
is a registered Danfoss trademark
6 How to Program the Low Harmonic Drive
2
1
0
0
0
0
0
1
0
1
1
0
1
0
1
1
1
1
Maximum Reference
.
Motor Frequency
.
Active Set-up
to Multi Set-up.
Jog
Freeze Output
[14] or
[20], which means that in order to
Start
Jog
[8],
Hand On
Auto On
and
buttons on the LCP has no
Hand Start
Auto-Start
and
Auto-Start
and
active again. If no signal on neither Hand
Hand Start
and
Auto-Start
[53]
0
0
1
0
1
0
1
0
1
6
Freeze output
[14] or
Hand On
on the
Hand
. Press either the
Off
button
.
Auto
6-23
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