Danfoss FC 300 Design Manual page 194

FC 300 Design Guide
Freeze ref [19]: Freeze the actual reference.
•
The frozen reference 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
(par. 3-51 and 3-52) in the range 0 - par.
3-03 Maximum Reference.
Freeze output [20]: Freeze the 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 (par. 3-51 and 3-52) in the
range 0 - par. 1-23 Motor Frequency.
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.
Speed up [21]: Select Speed up and Speed
•
down if 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 2 in par. 3-41.
Unchanged speed
Reduced by %-value
Increased by %-value
Reduced by %-value
• Speed down [22]: Same as Speed up [21].
Set-up select bit 0 [23]
•
select bit 0 or Select Set-up select bit 1 to
select one of the four set-ups. Set par. 0-10
Active Set-up to Multi Set-up.
Set-up select bit 1 [24]
•
32): Same as Set-up select bit 0 [23].
Precise stop inv.
•
to give a precise stop independent of speed.
default setting ( ) display text
*
194
How to Program
Shut down Catch up
0 0
1 0
0 1
1 1
: Select Set-up
(Default Digital input
[26]:Prolong the stop signal
[ ] value for use in communication via serial communication port
MG.33.B6.22 - VLT is a registered Danfoss trademark
Precise stop inverse function is available
for terminals 18 or 19.
• Precise start, stop
Precise ramp stop [0] is selected in par
1-83 Precise stop function.
Catch up [28]: Select Catch up/Slow
•
down to increase or reduce the reference
value set in par. 3-12.
Slow down [29]: Same as Catch up [28].
•
Counter input [30]: Select Counter input if
•
you want to use the Precise stop function in par.
1-83 as Counter stop or speed compensated
counter stop with or without reset. The counter
value must be set in par. 1-84.
• Pulse input [32]: Select Pulse input when
using a pulse sequence as either reference or
feedback. Scaling is done in par. group 5-5*.
Ramp bit 0 [34]
•
• Ramp bit 1 [35]
Mains failure inverse
•
par. 14-10 Mains Failure. Mains failure inverse
is active in the Logic .0. situation.
Latched Precise Stop inverse
•
a latched stop signal when the precise stop
function is activated in par. 1-83 Precise
Stop Function. See selection [26]. The
Latched Precise stop inverse function is
available for terminals 18 or 19.
DigiPot Increase [55]: Use the input as an
•
INCREASE signal to the Digital Potentiometer
function described in parameter group 3-9*
[56]: Use the input as a
• DigiPot Decrease
DECREASE signal to the Digital Potentiometer
function described in parameter group 3-9*
DigiPot Clear [57]: Use the input to CLEAR
•
the Digital Potentiometer reference described
in parameter group 3-9*
[27]: Use when
[36]: Select to activate
[41]: Send