Exlar Tritex, Руководство по установке

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Tritex 1 Installation and Setup
109
09/27/12
PN: 27666 Exlar Corporation
Rev. M 952-500-6200M
Travel Cut-off Position.
The Tritex software has a valve seat algorithm that allows the actuator to switch from position
mode to torque mode at a pre-determined position based on the milliamp signal. The control is
switched to torque mode when the Position Command exceeds the set closed or open travel
cutoff. This causes the actuator to apply a force without concern for actual position. The user
can determine how fast, and how much force should be applied to properly seat the valve
without damage.
Select what position you want to enable (Open, Closed or both) for the valve seat.
Seating Current Velocity
The maximum velocity during seating.
Peak Seating Current
The Peak Seating current determines the force that the actuator will use to seat a valve in
position. Seating current should be set to provide the desired level of force to fully close (or
open) the valve.
Foldback Seating Current
The Seating foldback current determines the force that the actuator will use to hold a valve in
position once seated. When calculating the seating foldback current, use the following equation
to calculate the force applied:
Seating force (Lbf) = seating foldback current (Amps) x Kt (lb-in/Amp) x 5.34 / Screw Lead
Warning: The cutoff parameters should be set within certain limits to avoid damage to the valve or actuator.