The basic steps to test a process and generate a model are:
Select the module.
If PredictPro was
launched in context from Control Studio or DeltaV Explorer, the module appears
at the top level in the model list.
If PredictPro is
opened from the Start menu, click
File → Select
Block, and then browse for the module.
Put the downstream blocks in the correct mode.
Select MPC control in
the Operation area to put the downstream blocks in the correct mode (Remote
Cascade or Cascade depending upon the connection). (Notice that the actual mode
of the function block changes from IMAN to MAN.)
Set up the trends.
Select Trend Setup in
the Tree View to set up the trends that plot the function block's input and
output parameters. Up to six of the block inputs and outputs can be trended at
one time in a selected trend. To add a parameter to a trend, select the
parameter, and click the add arrow (-->) at the color that you want to use
to plot the parameter on the graph. To remove a parameter from a trend, click
the remove arrow (<--).
Set up the test.
Verify that all loops
are properly tuned and that the transmitters and valves that provide the inputs
and use the outputs of the block are working correctly. Select Test Setup in
the Tree View to define the parameters included in the test and the manipulated
parameters that will be tested at one time. Use the
Select All for Test button to select all
the manipulated parameters. Select an individual parameter and select
Modify to define the setup of the
Manipulated parameter.
Run the Test.
Once the test is set
up and the downstream blocks associated with the manipulated parameters
included in the test are in their remote mode, select Model in the Tree View,
and then click
Test to initiate automatic testing of the
process. In response, the manipulated parameters will automatically change in a
pseudo-random manner over the test time. While testing is active, the actual
mode of the function block changes to LO. You can change a manipulated
parameter during testing by right-clicking the associated manipulated
parameter, and then selecting
Set Value. The portion of testing that is
complete is indicated by a progression bar. The estimated time remaining to
complete the test is shown below the progression bar.
Select the data.
If you are running a
test, a green area automatically covers the portion of the trend associated
with the test beginning and end times.
If you are not running
a test, drag the green bars over the data that you wish to use to create the
model and control.
You can also create a
model from data stored in a valid MPC data file format. Refer to for more
information. To use a data file, select
File → Autogenerate
From File, and then browse to the desired data file.
Generate a model and control for the MPCPro block.
Click
Autogenerate. (See note below.) The model
and control is generated from the data and automatically assigned to the block.
(Download the controller to put the model online.)
In Expert mode, click
Create Model only if you want to create
the model from the selected data. The model is not assigned to the block and no
control is generated. To create a model and/or control from data stored in a
valid MPC data file, select the appropriate option from the
File menu.
Note
Be sure that the module containing the function block is
not open in Control Studio when you click
Autogenerate because the block is
updated when the model is being generated.
Create a model for the MPCPlus block.
Click
Create Model
Assign the model using the
Assign context menu command or the
Assign button.