Actuator control device
AssigneeForac Limited
InventorAdam Bunyard
Life of this patent
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Abstract
A valve actuator control device adapted to control the position of a valve actuator by means of solenoid valves, in which if the actuator position deviates from a desired position, but remains within a predetermined distance from said desired position, the control device is adapted to only return the actuator to the desired position after a delay period, thereby to increase the life span of said solenoid valves.
Claims9
A valve actuator control device adapted to control the position of a valve actuator by means of solenoid valves, in which if the actuator position deviates from a desired position, but remains within a predetermined distance from said desired position, the control device is adapted to only return the actuator to the desired position after a delay period, thereby to increase the life span of said solenoid valves, in which the predetermined distance is divided into a number of sections, and in which a different delay period is applied when the actuator is positioned in each section.
Dependencies are inferred from the claim text.