Main Menu - Reference/Ramps - Group - Danfoss VLT FC 100 Series Programming Manual

®
VLT HVAC Drive Programming Guide
NB!
The ramp time is automatically adjusted to avoid tripping of the frequency converter.

3.5. Main Menu - Reference/Ramps - Group 3

3.5.1. 3-0* Reference Limits
Parameters for setting the reference unit, limits and ranges.
Feedback
Please see also par. 20-0*
loop.
3-02 Minimum Reference
Range:
*
0.000 [-999999.999 to par. 3-03]
3-03 Maximum Reference
Option:
* Par. 3-02
[50.000]
+999999.999
3-04 Reference Function
Option:
*
Sum
[0]
[1] External/Preset
Shift between external and preset via a command on a digital input.
3.5.2. 3-1* References
Parameters for setting up the reference sources.
Select the preset reference(s).
Inputs
.
3-10 Preset Reference
Array [8]
*
0.00% [-100.00 - 100.00 %]
for information on settings in closed
Function:
Enter the Minimum Reference. The Minimum Reference is the lowest value obtainable by summing all references.
The Minimum Reference value and unit matches the configuration choice made in par. 1-00 and par. 20-12
respectively.
NB!
This parameter is used in open loop only.
Function:
to Enter the Maximum Reference. The Maximum Reference is the highest value obtainable by summing all refer-
ences. The Maximum Reference value and unit matches the configuration choice made in par. 1-00 and par.
20-12 respectively.
NB!
This parameter is used in open loop only.
Function:
Sums both external and preset reference sources.
Use either the preset or the external reference source.
Select Preset ref. bit 0 / 1 / 2 [16], [17] or [18] for the corresponding digital inputs in parameter group 5.1*
Enter up to eight different preset references (0-7) in this parameter, using array programming. The preset ref-
erence is stated as a percentage of the value Ref
other external references. If a Ref
reference is calculated as a percentage of the full reference range, i.e. on the basis of the difference between
MG.11.C5.02 - VLT ® is a registered Danfoss trademark
(par. 3-03 Maximum Reference
MAX
Minimum Reference
different from 0 (Par. 3-02
MIN
3. Parameter Description
Digital
) or as a percentage of the
) is programmed, the preset
53
3