Danfoss VLT AutomationDrive FC 300 Programming Manual page 96

FC 300 Programming Guide
[21] Speed up
Unchanged speed
Reduced by %-value
Increased by %-value
Reduced by %-value
[22] Speed down
[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
[31] Pulse edge triggered
[32] Pulse time based
NB!
When Freeze output is active, the frequency converter cannot be stopped via a
low 'start [8]' signal. Stop the frequency converter via a terminal programmed
for Coasting inverse [2] or Coast and reset, inverse.
Select Speed up and Speed down if digital control of the up/down speed is desired (motor poten-
tiometer). 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
Precise stop function in par. 1-83
counter stop with or without reset. The counter value must be set in par. 1-84
Value
.
Edge triggered pulse input counts number of pulse flanks per sample time. This gives a higher
resolution at high frequencies, but is not as precise at lower frequencies. Use this pulse principle
for encoders with very low resolution (e.g. 30 ppr).
Time based pulse input measures the duration between flanks. This gives a higher resolution at
lower frequencies, but is not as precise at higher frequencies. This principle has a cut-off frequency
which makes it unsuited for encoders with very low resolutions (e.g. 30 ppr) at low speeds.
®
MG.33.M8.02 - VLT is a registered Danfoss trademark
3 Parameter descriptions
Shut down Catch up
0
1
0
1
Catch up/slow Down Value
Catch up/slow Down Value
acts as Counter stop or speed compensated
3
0
0
1
1
Precise Stop
.
.
Precise Stop Counter
95