Autonomous controller

Tuesday, 17 January, 2006 | Supplied by: http://www.yokogawa.com.au


Yokogawa Electric Corporation has upgraded the autonomous controllers for its Stardom network-based control system.

Stardom is made up of control, operation and monitoring components that can be interconnected flexibly and scalably using commercial networking technology. The system has both the reliability and supportability of distributed control systems (DCS) and the openness, versatility and cost-effectiveness of systems that combine PCs, programmable logic controllers (PLC).

Program processing is said to be 1.5 times faster. Consequently, it is now possible to introduce the autonomous controllers to processes such as compressor control that require high reliability and fast response. CPU-to-CPU equalisation processing for redundancy is claimed to be 20 times faster, so it is now possible to replace and repair one of the CPU boards in the redundant CPU configuration while the plant is still in operation.

Since many field devices currently in general use employ the HART protocol, HART-compliant I/O modules have been added to the product line-up. The online download function makes it possible to download controller modules and updated control programs from a PC to the Stardom controller without taking the plant offline.

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