Control Strategy Building - Honeywell Experion PKS Specifications And Technical Data

EP03-300-200 December, 2003
Release 200 Version 1.0

Control Strategy Building

Experion PKS control strategies are built using Control Builder, a graphical, object-oriented tool that
supports the Control Execution Environments of the Experion PKS Control Processor, Application
Control Environment and Simulation Control Environment. It allows system design, documentation, and
monitoring. It provides comprehensive handling of various I/O points, including Fieldbus, Profibus,
and DeviceNet. In addition, it covers continuous, logic, motor, sequential, batch and advanced control
functions through a library of Function Blocks (FBs). Function Blocks are basic block types provided
by Honeywell to perform different control functions. Each block supports parameters that provide an
external view of what the block is doing. FBs easily interconnect via "soft wires" to construct control
applications or strategies.
Function Blocks are grouped together and contained in Control Modules (CMs) and, in the case of
sequential FBs, Sequential Control Modules (SCMs). SCMs greatly simplify batch logic
implementation by sequencing a group of process equipment through a series of distinct steps to
accomplish one or more process tasks. CMs and SCMs act as "containers" for Function Blocks.
This is a very powerful tool for creating, organizing, and checking out control strategies. Figure 3
illustrates a simple Control Module -- in this case a PID loop -- consisting of basic FBs. In this
example, several FBs are "contained" within the CM named FIC101, and the AI and AO FBs are
executing in F Fieldbus devices. Each Control Module may be scheduled at its own
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execution rate from 5 msec to 20 sec (depending on the controller), and the user can schedule
Function Blocks and Control Modules to execute in any desired order.
Figure 2. Control Builder Supports a Powerful Set of Algorithm
Libraries for Implementing Process Control Strategies
Experion PKS CEE-based Controller Specifications and Models
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