Danfoss FC 300 Series User Manual

3-84 Quick Stop S-ramp Ratio at Decel. End
Range: Function:
50 % * [Application
dependant]
Enter the proportion of the total ramp-
down time (3-42 Ramp 1 Ramp-down
Time) where the deceleration torque
decreases. The larger the percentage
value, the greater the jerk compen-
sation achieved, and thus the lower the
torque jerks in the application.
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 -
200.00 %]
Enter the increment size required for
INCREASE/DECREASE, as a percentage of
the synchronous motor speed, n
s
. If
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
s
*
[0.00 -
3600.00 s]
Enter the ramp time, i.e., the time for
adjustment 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
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 3-90 Step Size.
3-92 Power Restore
Option: Function:
[0] * Off Resets the Digital Potentiometer reference to 0% after
power-up.
[1] On Restores the most recent Digital Potentiometer
reference at power-up.
3-93 Maximum Limit
Range: Function:
100 % * [-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.
3-94 Minimum Limit
Range: Function:
-100 % * [-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.
3-95 Ramp Delay
Range: Function:
Application
dependent
*
[Application
dependant]
Enter the delay required from
activation of the digital potenti-
ometer function until the
adjustable frequency drive 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
3-91 Ramp Time.
Parameter Descriptions FC 300 Programming Guide
MG.33.MA.22 - VLT
®
is a registered Danfoss trademark 3-41
3
3

Danfoss FC 300 Series Specifications

General

Brand	Danfoss
Model	FC 300 Series
Category	DC Drives
Language	English