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6.12 Process Input (with VC-1870 Input for Axial Position)
VC-18xx has an additional process input. The input signal can be a current or a voltage, which
allows for a linear measurement and display between the voltage / current and a physical
parameter such as pressure or temperature, etc.
Example: 0- 20mA is equivalent to 0- 20 bar.
Select process input type:
General setting of the process input under "Process 1: Name"
The parameter settings of the process entry (Process Setup) are made under "Edit / Process 1:
Name." The process input is enabled.
The current parameter settings of the process input (Process Setup) are carried out:
In four (4)
steps: "Name Edit / Process 1"
- Linear Conversion
Under Linear Conversion the operator defines the linear relationship between the input
voltage/current and the corresponding value of the physical parameter, e.g. °C or Pa.
A straight line between two points X1Y1 and X2Y2 represents the linear relationship.
-
Measurement outside of the measuring range (Namur NE43 Directive):
If the value is outside of the measuring range.
-
If the input has a value of 10% less than X
1
.
-
If the input has a value of 5% more than X
2