Danfoss VLT AutomationDrive FC 301 Programming Manual page 83

Parameter Descriptions
3-89 Ramp Lowpass Filter Time
Use this parameter to set how the smoothly the speed changes.
Range:
1 ms [1 - 2000 ms]
*
3.5.9 3-9* Digital Pot.Meter
The digital potentiometer enables increase or decrease of
the actual reference by adjusting the set-up of the digital
inputs using the functions increase, decrease, or clear. To
activate the function, set at least 1 digital input to increase
or decrease.
Speed
P 3-95
Inc
Illustration 3.29 Increase Actual Reference
Speed
P 3-95
Dec
Inc
Illustration 3.30 Increase/Decrease Actual Reference
3-90 Step Size
Range: Function:
0.10 % [0.01 - Enter the increment size required for
200 %] increase/decrease as a percentage of the
*
synchronous motor speed, n
decrease is activated, the resulting reference
is increased or decreased by the value set in
this parameter.
3-91 Ramp Time
Range: Function:
1 [0 - Enter the ramp time, that is the time for
s 3600 s] adjustment of the reference 0–100% of the
*
specified digital potentiometer function (increase,
decrease, or clear).
If increase/decrease is activated for longer than the
ramp delay period specified in
parameter 3-95 Ramp Delay, the actual reference is
ramped up/down according to this ramp time. The
ramp time is defined as the time used to adjust the
MG33ML02
Programming Guide
3-91 Ramp Time
Range:
Function:
3-92 Power Restore
Option: Function:
[0]
*
[1]
3-93 Maximum Limit
Range:
100 %
Time (s)
3-94 Minimum Limit
Range:
-100 %
3-95 Ramp Delay
Range:
Time (s)
Size
related
. If increase/
s
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Function:
reference by the step size specified in
parameter 3-90 Step Size.
Off Resets the digital potentiometer reference to 0% after
power-up.
On Restores the most recent digital potentiometer
reference at power-up.
Function:
[-200 - Set the maximum permissible value for the
*
200 %] resulting reference. This is recommended if
the digital potentiometer is used for fine-
tuning of the resulting reference.
Function:
[-200 - Set the minimum permissible value for the
*
200 %] resulting reference. This is recommended if
the digital potentiometer is used for fine-
tuning of the resulting reference.
Function:
[ 0 - Enter the delay required from activation of the
0] digital potentiometer function until the
*
frequency converter starts to ramp the
reference. With a delay of 0 ms, the reference
starts to ramp when increase/decrease is
activated. See also parameter 3-91 Ramp Time.
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