[20]
Freeze output
Freezes actual motor frequency (Hz). The frozen motor frequency is now the point of enable/con-
dition for Speed up and Speed down 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
Motor Frequency
.
NB!
When Freeze output is active, the frequency converter cannot be stopped via a
low ‘start [13]’ signal. Stop the frequency converter via a terminal programmed
for Coasting inverse [2] or Coast and reset, inverse [3].
[21]
Speed up
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 1in par. 3-41.
[22]
Speed down
Same as Speed up [21].
[23]
Set-up select bit 0
Selects one of the four set-ups. Set par. 0-10
Active Set-up
to Multi Set-up.
[24]
Set-up select bit 1
Same as Set-up select bit 0 [23].
(Default Digital input 32)
[32]
Pulse input
Select Pulse input when using a pulse sequence as either reference or feedback. Scaling is done in
par. group 5-5*.
[34]
Ramp bit 0
Select which ramp to use. Logic “0” will select ramp 1 while logic “1” will select ramp 2.
[36]
Mains failure inverse
Activates par. 14-10
Mains Failure
. Mains failure inverse is active in the Logic “0” situation.
[52]
Run Permissive
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
which is programmed for
START
[8],
Jog
[14] or
Freeze Output
[20], which means that in order to
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 (
Start
[8],
Jog
[14] or
Freeze output
[20]) programmed in par. 5-3* Digital outputs, or par. 5-4* Relays, will not be affected by Run
Permissive.
[53]
Hand start
A signal applied will put the frequency converter into Hand mode as if button
Hand On
on the 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 assign to
Auto Start
and a signal applied to this. The
Hand On
and
Auto On
buttons on the LCP has no impact.
The
Off
button on the LCP will override
Hand Start
and
Auto Start
. Press either the
Hand On
or
Auto
On
button to make
Hand Start
and
Auto Start
active again. If no signal on neither
Hand 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
Off
button on the
LCP the motor will stop regardless of signals on
Hand Start
and
Auto Start
.
[54]
Auto start
A signal applied will put the frequency converter into Auto mode as if the LCP button
Auto On
has
been pressed. See also
Hand Start
[53]
[55]
DigiPot Increase
Uses the input as an INCREASE signal to the Digital Potentiometer function described in parameter
group 3-9*
[56]
DigiPot Decrease
Uses the input as a DECREASE signal to the Digital Potentiometer function described in parameter
group 3-9*
[57]
DigiPot Clear
Uses the input to CLEAR the Digital Potentiometer reference described in parameter group 3-9*
[60]
Counter A (up)
(Terminal 29 or 33 only) Input for increment counting in the SLC counter.
[61]
Counter A (down)
(Terminal 29 or 33 only) Input for decrement counting in the SLC counter.
[62]
Reset Counter A
Input for reset of counter A.
[63]
Counter B (up)
(Terminal 29 and 33 only) Input for increment counting in the SLC counter.
[64]
Counter B (down)
(Terminal 29 and 33 only) Input for decrement counting in the SLC counter.
[65]
Reset Counter B
Input for reset of counter B.
[66]
Sleep Mode
Forces frequency converter into Sleep Mode (see par. 22-4*, Sleep Mode). Reacts on the rising edge
of signal applied!
[78]
Reset Preventive Maintenance Word Resets all data in par. 16-96, Preventive Maintenance Word, to 0.
VLT
®
AQUA Drive
Operating Instructions
8. How to programme the frequency converter
MG.20.M5.02 - VLT
®
is a registered Danfoss trademark
83
8
