Samson TROVIS 3730-3 Mounting And Operating Instructions page 119

Menu
Configuration
Set point processing
Lower w-range value
Upper w-range value
Direction of action
Characteristic
EB 8484-3 EN
Adjustment range/values [default setting]/description
8
8.1
8.1.1 [0.0] to 75.0 %
The lower set point range value must be lower than upper
range value (w-end), 0 % = 4 mA.
The set point range is the difference between w-end and
w-start and must be Δw ≥ 25 % = 4 mA.
When the set point range of 0 to 100 % = 4 to 20 mA, the
valve must move through its entire operating range from 0 to
100 % travel/angle of rotation.
In split-range operation, the valves operate with smaller set
points. The control signal of the control unit to control two
valves is divided such, for instance, that the valves move
through their full travel/angle of rotation at only half the input
signal (first valve set to 0 to 50 % = 4 to 12 mA and second
valve set to 50 to 100 % =12 to 20 mA).
8.1.2 25.0 to [100.0 %]
The upper range value of the set point range must be greater
than lower range value (w-start).
8.1.3 [Increasing/increasing] or Increasing/decreasing
The set point's effect on the valve position is determined as fol-
lows:
− Increasing/increasing: a globe valve opens as the set point
increases.
− Increasing/decreasing: a globe valve closes as the set point
increases.
8.1.4 Select one of the following characteristics:
[Linear]
Equal percentage
Reverse equal percentage
Butterfly valve, linear
Butterfly valve, equal percentage
Rotary plug valve, linear
Rotary plug valve, equal percentage
Segmented ball valve, linear
Segmented ball valve, equal percentage
User-defined (setting in TROVIS-VIEW)
Appendix
119