Danfoss FC 300

Preset ref. bit 2 1 0
Preset ref. 0 0 0 0
Preset ref. 1 001
Preset ref. 2 0 1 0
Preset ref. 3 011
Preset ref. 4 1 0 0
Preset ref. 5 101
Preset ref. 6 1 1 0
Preset ref. 7 111
[19] Freeze ref Freezes the actual reference, which 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 .
[20] Freeze output Freezes the actual motor frequency (Hz), which 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
.
NB!
When Freeze output is active, the frequency con-
verter cannot be stopped via a low ‘start [8]’ sig-
nal. Stop the frequency converter via a terminal
programmed for Coasting inverse [2] or Coast and
reset, inverse.
[21] Speed up 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/ down is activated for less than 400 msec. the
resulting reference will be increased/ decreased by 0.1 %. If
Speed up/ down is activated for more than 400 msec. the re-
sulting reference will follow the setting in ramping up/ down
parameter 3-x1/ 3-x2.
Shut down Catch up
Unchanged speed 0 0
Reduced by %-value 1 0
Increased by %-value 0 1
Reduced by %-value 1 1
[22] Speed down Same as Speed up [21].
[23] Set-up select bit 0 Select Set-up 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.
[24] Set-up select bit 1 (Default Digital input 32): Same as Set-up select bit 0 [23].
[26] Precise stop inv. Prolongs stop signal to give a precise stop independent of
speed.
Sends an inverted stop signal when the precise stop function is
activated in par. 1-83
Precise Stop Function .
Precise stop inverse function is available for terminals 18 or 19.
FC 300 Programming Guide 2. How to Programme
MG.33.M2.02 - VLT
®
is a registered Danfoss trademark 97
2