Sequence Control
Sequence Control integrates Process Recipe and the Aspen
InfoPlus.21 real-time database to deliver recipe information to
process control systems, operators, and other applications that
depend on grade-specific data. The sequence control manager enables
users to create and implement complex recipe transition strategies.
These strategies permit multi-step transitions based on
sophisticated rules and logic that are implemented through an
advanced calculation tool.
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At the time of transition, an operator
selects the product, invoking the appropriate recipe and transition
strategy. Sequence control allows the operator to initiate the
execution of the transition.
Features
Sequence control offers manufacturers
the opportunity to significantly reduce their transition times and
off-spec material losses. This is especially true for processes
that need to either manually or automatically:
- Manage sequence events
- Execute recipe items in a specific
order
- Manage multiple grades
- Manage various steady-state
conditions
Benefits
- Reduce the total transition time, while
maintaining constraint limits
- Specify how and when a recipe item and
its parameters will be invoked
- Provide uniform methods for grade
transition and reduction of transition times
- Maximize production rates to unit
performance constraints
- Maximize and standardize the use of
procedures and best practices