Danfoss VLT AutomationDrive FC 300 Instruction Manual page 66

4 How to Program
[19] Freeze ref
[20] Freeze output
4
[21] Speed up
Unchanged speed
Reduced by %-value
Increased by %-value
Reduced by %-value
[22] Slow
[23] Set-up select bit 0
[24] Set-up select bit 1
[26] Precise stop inv.
[27] Precise start, stop
[28] Catch up
[29] Slow-down
[30] Counter input
4-20
Freezes the actual reference, which is now the point of enable/condition for Speed up and Slow to
be used. If Speed up/down is used, the speed change always follows ramp 2 (par. 3-51
Ramp-up Time Ramp 2 Ramp-down Time
and par. 3-52
erence .
Freezes the actual motor frequency (Hz), which is now the point of enable/condition for Speed up
and Slow to be used. If Speed up/down is used, the speed change always follows ramp 2
(par. 3-51 Ramp 2 Ramp-up Time
par. 1-23 Motor Frequency .
NOTE!
When freeze output is active, the adjustable frequency drive cannot be stopped
via a low 'start [8]' signal. Stop the adjustable frequency drive via a terminal
programmed for Coast inverse [2] or Coast and reset inv.
Select Speed up and Slow 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 resulting reference will follow the setting
in ramping up/down parameter 3-x1/ 3-x2.
Same as Speed up [21].
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.
(Default Digital input 32): Same as Set-up select bit 0 [23].
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
Function
.
Precise stop inverse function is available for terminals 18 or 19.
Use when Precise ramp stop [0] is selected in par 1-83.
Increases reference value by percentage (relative) set in par. 3-12
Reduces reference value by percentage (relative) set in par. 3-12
Precise stop function in par. 1-83 Precise Stop Function
counter stop with or without reset. The counter value must be set in par. 1-84
Value
.
®
MG.33.AG.22 - VLT is a registered Danfoss trademark
VLT ® AutomationDrive FC 300 Instruction
) in the range 0 - par. 3-03
and par. 3-52 Ramp 2 Ramp-down Time
Shut down
0
1
0
1
Catch up/slow-down Value
Catch up/slow-down Value
acts as counter stop or speed compensated
Manual
Ramp 2
Maximum Ref-
) in the range 0 -
Catch up
0
0
1
1
Precise Stop
.
.
Precise Stop Counter