Press Release
Entry-level models added to Yokogawas UTAdvanced(TM) Series of digital indicating controllers
Yokogawa Electric Corporation announces the release of the UT35A (quarter DIN size) and the UT32A (one-eighth DIN size), two entry-level models in the UTAdvanced(TM) series of digital indicating controllers.
These new low-cost models, which replace Yokogawas UT300 range, have a sequence control function that is based on the general-purpose ladder logic programming language, and are targeted for use in the single-loop control of production equipment.
The UTAdvanced Series adopts an open system architecture with an Ethernet communications interface. They are compatible with MODBUS/TCP protocol and also (as an option) with the PROFIBUS DP protocol. In addition to eliminating the need for dedicated communication programs and converters for connecting to devices such as data-acquisition units and/or PLCs, this feature makes it easy to develop optimal multi-vendor systems for users.
Development background
Indicating controllers are embedded in industrial furnaces and other relatively small-scale production line equipment and installations, and are used to measure, display and control various types of data including temperature, pressure and flow rate. In April 2009, Yokogawa launched the UTAdvanced series of digital indicating controllers, featuring sequence control based on the widely used ladder logic programming language.
The first models in this series, the UT55A and UT52A, have gained a solid reputation for their contributions in raising efficiency and lowering costs by integrating peripheral devices such as relays. These high-end, high-performance digital indicating controllers have a wealth of control function modes, with the most capable units able to perform full cascade control for controlling relatively complex installations such as continuous furnaces.
However, there is also a need in the market for general-purpose indicating controllers that have only the functionality needed for controlling single-loop production equipment. To meet this need, Yokogawa is releasing the UT35A and UT32A entry-level models. These new products are expected to further enhance Yokogawas digital indicating controller business.
Product features
The new controllers offer an optimum combination of functionality and price. The UT35A and UT32A have a fixed control scan period of 200 ms and 300 steps for ladder programming, compared with the three control scan periods and 500 steps in the high-end UT55A and UT52A models. However, this is more than adequate for the single-loop control of production line installations.
The UT35A and UT32A also have capabilities that to date have been found in only high-end controllers, including a ladder language based sequence control function; support of the Ethernet or RS485 interfaces and MODBUS or PROFIBUS-DP communication protocols; a colour LCD display; and operation guidance functions including navigation keys.
Also included is a user default function. Not only is it possible via a simple function to reset the unit to factory default settings: it is also possible for the user to define his own default profile to which it is possible to return. This means that an engineer can always quickly revert to a known working setup profile - without starting again from scratch or having to load a configuration file from a PC.
Target markets
Main target markets for the new controllers are machining facilities in a wide variety of industries including electrical equipment, machinery, chemicals, foods, semiconductors and automotive manufacturing.
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About Yokogawa Europe B.V.
The European headquarters of Yokogawa were founded in Amersfoort in the Netherlands in 1982. Throughout Europe Yokogawa has its own sales, service and engineering operations. This dedicated network has been extended to Central and East Europe and Southern Africa to further enhance the coverage and support associated with serving the process control and automation market place. Yokogawa develops and produces flowmeters at Rota Yokogawa in Germany and liquid analysers and industrial safety systems in the Netherlands. In addition to this dedicated network of Yokogawa subsidiaries, a select organisation of Test & Measurement (T&M) subsidiaries and distributors is established in certain areas to support the specific customer needs of this continuously developing and specific market of T&M instrumentation.
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