Control Loop Foundation

Batch and Continuous Processes -
Interactive Source for Process Control

Valve Position Control

This workshop is designed to allow the operation of valve position control to be explored. The exercise is based on flow control using a small valve and a large valve.

Step 1. In the valve position control workspace, change the mode of the flow controller to Auto.

Step 2. Change the flow controller SP (Setpoint) over the following range: 40, 50, and 60. Observe the change in the two outputs. Why is the small valve maintained at 50%?

Step 3. Change the SP of the valve position controller and observe the response.