Programming Guide | VLT® AutomationDrive FC 360
The actual reference (X) is increased or decreased with the percentage Y, set in parameter 3-14 Preset Relative Reference. This results
in the actual reference Z. Actual reference (X) is the sum of the inputs selected in parameter 3-15 Reference 1 Source, parameter 3-16
Reference 2 Source, parameter 3-17 Reference 3 Source, and parameter 8-02 Control Source.
Y
Resulting
Relative
Z
actual
X
Z = X + X *Y/100
reference
Figure 21: Preset Relative Reference
-100
Figure 22: Actual Reference
3-15 Reference 1 Source
Default value:
[1] Analog Input 53
Setup:
All setups
Data type:
Uint8
Select the reference input to be used for the first reference signal. Parameter 3-15 Reference 1 Source, parameter 3-16 Reference 2 Source,
and parameter 3-17 Reference 3 Source define up to 3 different reference signals. The sum of these reference signals defines the actual
reference.
Option
[0]
[1]
[2]
[7]
[8]
[11]
[20]
[32]
90
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Z
X
0
P 3-14
Y
100 %
Parameter type:
Conversion index:
Change during operation:
Name
No function
Analog Input 53
Analog Input 54
Frequency input 29
Frequency input 33
Local bus reference
Digital pot. meter
Bus PCD
Option
–
True
AU275649936274en-001401 / 130R0507
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