Specifying Tuning

Values

Getting Started Guide Tutorial 2 - Modifying the Control Scheme • 2-17

3. In the Integral time box, type an integral time of 30 minutes.

The Tuning tab now looks like this:

To modify the ranges for the process variable (measured variable)

and controller output (manipulated variable):

1. Click the Ranges tab.

2. Under Process Variable, in the Range minimum box, type 0.9.

3. Under Process Variable, in the Range maximum box, type 1.

Modifying Ranges for

Variables

2-18 • Tutorial 2 - Modifying the Control Scheme Getting Started Guide

4. Leave the Output Range values unchanged.

The Ranges tab now looks like this:

You have now completed the controller specifications.

5. Click the Close button to close the Configure dialog box.

To incorporate a dead time for the measured variable:

1. In the Process Flowsheet window, click the MCHCOMPDT

block.

2. Click the right mouse button on the block and from the menu

that appears, point to Forms, then Configure.

The Configure table appears.

3. In the Configure table that appears, click the Value cell and

type 5 to simulate a sensor dead time of 5 minutes.

The MCHCOMPDT PID control block configure table looks

like this:

You have now completed the specification for the dead time

block.

4. Close the Configure table.

Modifying Dead Time

Дата добавления: 2015-08-20