Alfa Laval Corporate Ab

Thomas Priisholm

Karsten Schack Madsen

Axel Lund Henriksen

A valve controller for a valve that comprises an actuator mechanically coupled to at least one flow controlling element. The valve controller comprises at least one pilot valve for controlling the position of the flow controlling element(s) by the actuator. The valve controller comprises a position sensor for obtaining a position signal indicative of the position of one of said at least one flow controlling element. The valve controller is configured to execute a configuration phase comprising establishing a pilot valve integer corresponding to number of pilot valves, and determining a tolerance criterion for the position signal based on the pilot valve integer. A valve arrangement comprising the valve controller and a valve. A method of controlling a valve comprising the configuration phase.

Valve controller and method of controlling a valve

A valve controller for controlling a valve and a valve comprising the valve controller are disclosed. The valve has an actuator and a flow controlling unit. The valve controller is configured to execute a setup process and comprises a first pilot valve that can energize the actuator by allowing a first pressurized fluid to enter the actuator and de-energizing the actuator by allowing the fluid to leave the actuator. The valve controller further has an input device by which the setup process can be initiated, and a memory unit for storing setup parameter values. The setup process comprises: determining parameter values indicative of the functionality of at least one of the valve controller, the actuator and the flow controlling unit, and storing the parameter values as setup parameter values in the memory unit.

Setup of valve controller

A valve controller for controlling a valve and a valve comprising the valve controller are disclosed. The valve comprises an actuator and a flow controlling unit. The valve controller comprises equipment for controlling the function of at least one of the actuator and the flow controlling unit. The valve controller is further configured to obtain one or more first parameter values indicative of a functionality of the equipment at startup of the valve controller. The valve controller is configured to monitor the equipment during operation of the valve controller for determining one or more second parameter values indicative of the functionality of the equipment and determining if a change in functionality of the equipment has occurred based on a comparison of the one or more second parameter values with the one or more first parameter values.

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Kolding, Denmark

Thomas Priisholm