Characterization; Custom Characterization Table - Fisher FIELDVUEDVC6200f Instruction Manual

Instruction Manual
D103412X012

Characterization

Characterization (INPUT_CHAR [76]) defines the relationship between the travel target and the setpoint received from
the output block. Travel target is the output from the characterization function.
You can select from the three fixed input characteristics shown in figure 4‐1 or you can select a custom characteristic.
Figure 4‐1 shows the relationship between the travel target and travel set point for the fixed input characteristics.

Custom Characterization Table

You can specify 21 points on a custom characteristic curve. Each point defines a travel target, in % of ranged travel, for
a corresponding set point, in % of ranged set point. Set point values range from -25.0% to 125%. Before modification,
the custom characteristic is linear. You cannot modify the custom points if the Input Characterization is set to custom.
Figure 4‐1. Travel Target Versus Ranged Set Point, for Various Input Characteristics (Zero Power Condition = Closed)
125
100
0
-25
-25 0
Input Characteristic Linear
A6535‐1
Set Point, %
100 125
125
100
0
-25
-25 0
Input Characteristic Quick Opening
125
100
0
-25
-25 0
Input Characteristic Equal Percentage
Set Point, % 100 125
DVC6200f Digital Valve Controller
Detailed Setup - Transducer Block
Set Point, %
100
February 2017
125
53