In System 800xA APC extension there is a control module for an MPC controller in the AC 800M controller. Using this control module the MPC controller is easily connected to measured signals and to downstream PID controllers. Once this is done, and the application is downloaded to the AC 800M controller, the MPC can be operated manually using preconfigured operator displays and faceplates.
The connections between the MPC and the other objects are established using “control connections.” These are bidirectional multi-signal connections where not only signal values are transported but also the Boolean information about operational modes for the downstream PID.
System 800xA APC utilizes the 800xA infrastructure fully. Since an MPC controller can be computationally demanding the execution of the APC service for the MPC engine can be distributed to any server in the 800xA system. If desired, eg, for additional reliability, a redundant service can also be configured. Further, the System 800xA infrastructure provides all the necessary supervision, and all events and anomalies are recorded in the 800xA alarm and event functionality.
Other benefits of the System 800xA APC are:
- Built on already established ABB products
- Migration path for Predict & Control (P&C) and Expert Optimizer controllers
- A structure for the MPC application is enforced, which simplifies maintenance since all related artifacts are stored in one location