Danfoss FC 300 Programming Manual page 61

Parameter Descriptions
3.5.8 3-9* Digital Pot.Meter
The digital potentiometer function allows the user to increase
or decrease the actual reference by adjusting the set-up of the
digital inputs using the functions Increase, Decrease or Clear.
To activate the function, at least one digital input must be set
up to Increase or Decrease.
3-90 Step Size
Range: Function:
0.10 % [0.01 - Enter the increment size required for
*
200.00 %] INCREASE/DECREASE, as a percentage of
the synchronous motor speed, n
INCREASE/ DECREASE is activated the
resulting reference will be increased /
decreased by the amount set in this
parameter.
3-91 Ramp Time
Range: Function:
1.00 [0.00 - Enter the ramp time, i.e. the time for adjust-
s 3600.00 s] ment of the reference from 0% to 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
par. 3-95 Ramp Delay the actual reference will
be ramped up / down according to this ramp
time. The ramp time is defined as the time
used to adjust the reference by the step size
specified in par. 3-90 Step Size.
FC 300 Programming Guide
3-92 Power Restore
Option:
[0]
[1]
3-93 Maximum Limit
Range:
100 %
3-94 Minimum Limit
Range:
-100 %
3-95 Ramp Delay
Range:
Application
dependent
. If
s
®
MG.33.M9.02 - VLT is a registered Danfoss trademark
Function:
Off Resets the Digital Potentiometer reference to 0% after
*
power up.
On Restores the most recent Digital Potentiometer
reference at power up.
Function:
[-200 - 200 Set the maximum permissible value for the
*
%] resultant reference. This is advisable if the
Digital Potentiometer is used for fine
tuning of the resulting reference.
Function:
[-200 - 200 Set the minimum permissible value for the
*
%] resultant reference. This is advisable if the
Digital Potentiometer is used for fine
tuning of the resulting reference.
Function:
[Applica- Enter the delay required from activation
tion of the digital potentiometer function
*
dependant] until the frequency converter starts to
ramp the reference. With a delay of 0
ms, the reference starts to ramp as soon
as INCREASE/ DECREASE is activated.
See also par. 3-91 Ramp Time.
3 3
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