ETS was presented at Tokyo (photo) and other locationsThe Fieldbus Foundation logoCENTUM CS 1000ProSafe-RS51Yokogawa 100th AnniversaryIn the late 1980s, there was an increasing need to integrate control systems for optimizing and streamlining all factory operations. In addition, customers wanted to integrate control systems with management systems, and consolidate the control rooms used for separate production facilities. Control systems were also required to support general-purpose technologies.To satisfy customer’s needs for a sophisticated control platform that was both exible and open, Yokogawa introduced the CENTUM CS integrated production control system in 1992. Its CPU relied on a pair & spare architecture that eventually enabled CENTUM series systems to achieve seven-9s (99.99999%) availability.Meanwhile, since the mid-1980s, several suppliers had developed their own digital communication bus systems, which made it dicult to interconnect eld devices. For the convenience of its customers, Yokogawa advocated the development of a new international eldbus standard, and worked hard to make it happen. By leading the eort to develop consensus among multiple standardization bodies, Yokogawa played a key role in getting a new standard created in 2000.Reforming the Control Business and ETSAs technologies were becoming increasingly open, Yokogawa noticed changes in the DCS market and started reforming its control business accordingly.In July 1997, Yokogawa announced a new business concept, “Enterprise Technology Solutions (ETS).” With ETS, Yokogawa aimed to provide optimum, cutting-edge control technology solutions to address specic needs that its customers faced in their business operations. Thus, Yokogawa shifted its focus from the product business to the solution business.As platforms to achieve ETS, Yokogawa released CENTUM CS 1000 for small- to medium-size processes in 1997 and CENTUM CS 3000 for large-size processes in 1998. These systems met customers’ expectations by having the same capabilities and open features of the latest general-purpose computers, and the capability to support eldbuses, while maintaining the reliability of the DCS platform and backwards compatibility with previous CENTUM generations.To expand the range of solutions, Yokogawa also jointly developed advanced control software packages with customers and engaged in M&A. In 1997, Yokogawa acquired GTI-IA, a Dutch company specializing in safety instrumented systems, and in 2005, released the ProSafe-RS safety instrumented system. In the analyzer business eld, Yokogawa took a 51% stake in Measurementation, a leading analyzer systems integrator in the US (later integrated into Yokogawa’s US subsidiary).To take the information business to the next level, Yokogawa acquired Marex Technology, a British company, to develop a common platform for manufacturing execution systems (MES) that manage and use data collected by DCSs. In 2000, Yokogawa added to its lineup the Exaquantum plant information management system, which uses Marex’s technology.A New Long-term Corporate Strategy for Achieving a Protable StructureIn 1998, Yokogawa’s sales and prot dropped sharply due to unprecedented negative economic growth in Japan and the Asian currency crisis. Amidst these diculties, President Mikawa passed away in June 1999 and Isao Uchida, executive vice president, took over.
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