Danfoss vlt AQUA Instruction Manual page 92

8 How to program the adjustable frequency
drive
[19] Freeze ref.
[20] Freeze output
[21] Speed up
8
[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
[55] DigiPot Increase
8-22
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 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 which
START Jog
is programmed for [8], [14] or
running the motor, both conditions must be fulfilled. If run permissive is programmed on multiple
terminals, it needs only be logic '1' on one of the terminals for the function to be carried out. The
digital output signal for Run Request (
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 the button
on the LCP has been pressed; 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 assign
to Auto Start and a signal applied to this. The
effect. The Off button on the LCP will override
On Auto On Hand Start
or button to reactivate
Start Auto Start
or , the motor will stop regardless of any normal start command applied. If a signal
Hand Start Auto Start
applied to both and
on the LCP, the motor will stop regardless of the signals on
A signal applied will put the adjustable frequency drive into auto mode as if the LCP button
On Hand Start
has been pressed. See also
Uses the input as an INCREASE signal to the digital potentiometer function described in parameter
group 3-9*.
®
MG.20.M5.22 - VLT is a registered Danfoss trademark
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.
Freeze Output
[20], which means that in order to start
Start Jog Freeze output
[8], [14] or [20]) programmed in par.
Hand On and Auto On buttons on the LCP have no
Hand Start and Auto Start
Auto Start
and . If there is no signal on either
Auto Start
, the function will be . If you press the
Hand Start
and
[53]
®
VLT AQUA Drive
Instruction Manual
0
0
1
0
1
0
1
0
1
Hand On
. Press either the Hand
Hand
Off
button
Auto Start
.
Auto