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Application Note: AN-114 - Closed Loop Valve Control

 This application uses a Harsh Environment Controller and controls a proportional valve and includes active feedback of the valve coil current. The application uses a setpoint and drives the valve coil to a constant current (using Pulse Width Modulation). Using the coil current as a setpoint, the control is accurate regardless of temperature changes.

File Link Download Appnote
File Size: 203K
Release Date: 4/12/2010
Program Language: Ladder Diagram
File Includes: AN-114.pdf, Application Program AN-114_HEC4X.dld