Main Menu - Reference/Ramps - Group; Reference Limits; References - Danfoss VLT HVAC Basic Drive Programming Manual

Parameters

3.4 Main Menu - Reference/Ramps - Group 3

3.4.1 3-0* Reference Limits

3 3
Parameters for setting the reference unit, limits and ranges.
Please also see parameter group 20-0* for information on
settings in closed loop.
3-02 Minimum Reference
Range:
0.0 ReferenceFeed-
backUnit
*
3-03 Maximum Reference
Range:
50.0 Reference-
FeedbackUnit
*

3.4.2 3-1* References

3-10 Preset Reference
Range:
0.0 % [-100.0 -
*
100.0 %]
30
VLT HVAC Basic Drive Programming Guide
Function:
[-4999.0 - 4999.0 The Minimum
ReferenceFeed- Reference is the
backUnit] lowest value
obtainable by
summing all
references.
Function:
[-4999.0 - 4999.0 The Maximum
ReferenceFeed- Reference is the highest
backUnit] value obtainable by
summing all references.
The Maximum
Reference unit matches
the choice of configu-
ration in
1-00 Configuration Mode.
Function:
Enter up to eight different preset references
(0-7) in this parameter, using array
programming. Select Preset Reference bit 0 /
1 / 2 [16] , [17] or [18] for the corresponding
digital inputs in parameter group 5.1* Digital
Inputs.
MG.18.B1.02 - VLT
P3-03
P3-02
0
3-11 Jog Speed [Hz]
Range:
5.0 Hz [0.0 - 400.0
*
Hz]
3-14 Preset Relative Reference
Range: Function:
0.0 [-100.0 - Define fixed value in % to be added to variable
% 100.0 %] value defined in par. 3-18, Relative Scaling
*
Reference Source.
The sum of fixed and variable values (labelled Y in
illustration below) is multiplied with actual
reference (labelled X in illustration). This product is
added to actual reference
3-15 Reference 1 Source
Option:
[0] No function
[1] Analog in 53
*
®
is a registered Danfoss trademark
50 100%
Function:
The jog speed is a fixed output speed at
which the frequency converter is running
when the jog function is activated.
See also 3-80 Jog Ramp Time.
Y
X + X ×
100
Y
Resulting
Relative Z
actual
X Z=X+X*Y/100
reference
Function:
Select the input to be used for the first
reference signal. 3-15 Reference 1 Source,
3-16 Reference 2 Source and 3-17 Reference
3 Source define up to three different
reference signals. The sum of these
reference signals defines the actual
reference. See also 1-93 Thermistor Source.
P3-10