Upgrade to network control system
A
Yokogawa product story
Edited by the Engineeringtalk editorial team
Feb 7, 2006
Upgraded version of network-based control system includes strengthened network functions, communications functions and pulse-width output modules.
Yokogawa has released an upgraded version of the Stardom network-based control system.
Improvements include strengthened network functions, communications functions and pulse-width output modules.
The system is for high-speed distributed control over a wide area, and can be used with Centum, Yokogawa's flagship distributed control system (DCS) for large-scale main processes.
Stardom is an open network control system comprised of function-specific control, operation and monitoring components that can be connected flexibly and on a scaleable basis using networking technology.
The system has the same reliability and supportability of a DCS while having the openness, versatility and cost-effectiveness of systems that combine PCs, PLCs and other devices.
It is widely used in the control of shared-use plant facilities, including boilers and compressors.
The improvements to its network functions make it possible for a Centum DCS to connect to Stardom through a general-purpose Ethernet network capable of high-speed data communication.
An operator at a Centum operation and monitoring station can now view the operating status information of a Stardom controlled plant.
By combining these two platforms, users can build systems for plant-wide operation and monitoring.
Stardom now supports DNP3 (Distributed Network Protocol 3) communication to ensure fault-free data exchange even when general-purpose telephone circuits and other types of low-stability communication lines are used.
Consequently, highly reliable supervisory control systems can be configured even at remote oil and natural gas drilling sites or pipeline sites.
The DNP3 protocol was originally developed for the electric utility industry in Europe, and has recently been introduced to the wide-area distributed control of oil and gas drilling sites, pipelines, and water supply and sewerage systems.
With the pulse-width output modules, it is possible to control the gating of electrically operated valves in 2ms.
This allows the system to be used in applications such as continuous casting processes in iron and steel plants which require high-speed precision control.
By using these modules with a Centum DCS for blast furnace control, a user can build a system that can control an entire iron and steel plant.
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