Danfoss VLT FC 100 Series Programming Manual page 58

3. Parameter Description
3
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:
*
0.10% [0.01 - 200.00%]
3-91 Ramp Time
Range:
*
1.00 s [0.00 - 3600.00 s]
3-92 Power Restore
Option:
*
Off
[0]
[1] On
3-93 Maximum Limit
Range:
*
100% [-200 - 200 %]
3-94 Minimum Limit
Range:
*
0% [-200 - 200 %]
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Function:
Enter the increment size required for INCREASE/DECREASE, as a percentage of the synchronous motor speed,
n . If INCREASE/ DECREASE is activated the resulting reference will be increased / decreased by the amount set
s
in this parameter.
Function:
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
Function:
Resets the Digital Potentiometer reference to 0% after power up.
Restores the most recent Digital Potentiometer reference at power up.
Function:
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:
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.
MG.11.C5.02 - VLT ® is a registered Danfoss trademark
®
VLT HVAC Drive Programming Guide
Step Size .