Offshore staff
NEWNAN, Georgia -- Yokogowa has released Centum VP for batch control. It provides features and functions suitable for the chemical, specialty chemical, pharmaceutical, food and beverage industries, and any other batch applications. Based upon ISA-88 and IEC61512 standards, the batch functionality provides recipe management and process management functions layered upon the unit supervision and process control activities within Centum VP.
One enhancement to Centum VP for batch is the configurable unit faceplate that allows monitoring and execution of the batch utilizing a unique interface, Yokogawa says. Using the custom faceplate feature, the unit faceplate provides a dashboard for a unit. It supports the ability to display different types of unit information and control options, including trends, unit status, allocation status, and commands/statuses from a customizable unit state model.
Centum VP maintains core features of running the unit recipe in a dual redundant controller environment, a feature inherent with the system since 1998. By having the batch execution resident in the highly reliable controller provides assurance that the batch will run to completion.
Other basic controller features provided by Centum VP for batch include batch specific function blocks as standard, such as dosing, charging, ramp soaks, reactor temperature controller and a standard function block for arbitrating shared resources. In addition, Centum VP batch control provides resident (equipment-based) and non-resident (recipe-based) units, separation of recipe data (formula) from equipment data (units), units as a standard function block with data and modes as well as a customizable state transition matrix.
It also provides unit-centric exception handling, that allows batch engineers to create procedures in a modular fashion for mainline activities and then engineer exception handling utilizing unit monitors and interrupt processing for individual initialization, pause, restart and stop logic.
By implementing this at the unit level automation engineers only have to implement failure-handling logic one time and do not have to implement it in each phase in a unit. Centum VP batch control provides for pre-configured trains/paths (equipment), and dynamic assignment of units even after the batch is already in progress. These powerful features provide a high degree of modularity and simplicity in designing and executing batch processing
Centum VP batch control functionality provides standard displays for product overview, product control, and unit control for recipe and product selection. These displays provide automatic up-to-the-minute documentation of the batch logic without any engineer intervention. Logic can be followed as it runs and can be used easily for troubleshooting. Control, interlocks, sequential function charts (SFCs), and logic code are displayed in real time. A batch journal - history of alarm/events associated with batch ID, is automatically created as the control recipe executes.
08/21/2008
