Danfoss VLT FC 100 Series Programming Guide

3.5.6. 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 par. 3-95 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 .
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:
0% * [-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. Parameter Description VLT
®
HVAC Drive Programming Guide
58 MG.11.C5.02 - VLT
®
is a registered Danfoss trademark
3

Danfoss VLT FC 100 Series Specifications

General

Brand	Danfoss
Model	VLT FC 100 Series
Category	DC Drives
Language	English