condition for Speed up and Speed down to
be used. If Speed up/down is used, the
speed change always follows ramp 2
(
and
) in the range 0 -
3-03 Maximum Reference
. (For closed loop
see
20-14 Maximum Reference/Feedb.
[20] Freeze output
Freezes actual motor frequency (Hz). The
frozen motor frequency is now the point of
enable/condition for Speed up and Speed
down to be used. If Speed up/down is
used, the speed change always follows
ramp 2 (
and
) in the range
0 -
NOTE
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 1 in
[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 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 parameter 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
Select to activate function selected in
. Mains failure is active in
the Logic “0” situation.
[37] Fire mode
A signal applied will put the frequency
converter into Fire Mode and all other
commands will be disregarded. See 24-0*
Fire Mode
.
[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
parameter group 5-3*, or parameter group
5-4*, will not be affected by Run Permissive.
NOTE
If no Run Permissive signal is applied
but either Run, Jog or Freeze
commands is activated, the status line
in the display will show either Run
Requested, Jog Requested or Freeze
Requested.
[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 Potenti-
ometer 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.
Parameter Description
VLT
®
HVAC Drive Programming Guide
64
MG.11.CC.02 - VLT
®
is a registered Danfoss trademark
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