Instruction Manual
D103176X012
Detailed Setup and Calibration
June 2017
18
Figure 2‐2. Travel Target Versus Ranged Set Point, for Various Input Characteristics (Zero Control Signal = Closed)
Travel Target, %
Ranged Set Point, %
−25
0 125
100
−25
0 125
100
−25
0 125
100
Input Characteristic = Linear
Input Characteristic = Equal Percentage
Input Characteristic = Quick Opening
100
0
-25
125
Travel Target, %
100
0
-25
125
Ranged Set Point, %
Travel Target, %
100
0
-25
125
Ranged Set Point, %
A6535-1
D Setpt Filter Time—Time constant for the set point filter, in seconds. The set point filter slows the response of the
digital valve controller and is typically used with noisy or fast processes. The filter provides improved closed loop
process control. To disable the filter, set the time constant to 0 seconds.
D Limits and Cutoff
Travel Limit Hi—Defines the high limit for the travel in percent (%) of ranged travel. It is the maximum allowable
travel (in percent of ranged travel) for the valve. During operation, the travel target will not exceed this limit. When
a Travel Limit High is set, the Travel Cutoff High is deactivated, since only one of these parameters can be active.
Travel Limit High is deactivated by setting it to 125.0%.
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