Danfoss FC 300 Programming Manual page 97

FC 300 Programming Guide
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
[19]
[20]
[21]
Unchanged speed
Reduced by %-value
Increased by %-value
Reduced by %-value
[22]
[23]
[24]
[26]
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
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
Frequency
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.
Speed down Same as Speed up [21].
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
up.
Set-up select bit 1 (Default Digital input 32): Same as Set-up select bit 0 [23].
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 inverse function is available for terminals 18 or 19.
®
MG.33.M2.02 - VLT is a registered Danfoss trademark
2 1
0 0
0 0
0 1
0 1
1 0
1 0
1 1
1 1
.
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.
Shut down
0
1
0
1
Active Set-up
Precise Stop Function
2. How to Programme
0
0
1
0
1
0
1
0
1
Maximum Reference
.
Motor
Catch up
0
0
1
1
to Multi Set-
.
97
2