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Automation Technologies 4/2015

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Automation Technologies 4/2015

CONTROL AND DRIVE

CONTROL AND DRIVE TECHNOLOGY previous page 01 Part of compressor and transmission station production plant with a wide range of the most varied control and safety requirements, owing to its success in the past, it was worth considering the automation system PSS 4000 for this project. The automation system from Pilz stands for optimum interaction between hardware and software components, network devices and the real-time Ethernet SafetyNET p. The system features the most varied functions and combination options, which distinguish it from classic automation solutions. This applies to both stand-alone machines and interlinked plants: due to its consistent distribution of control functions, project implementation can be flexible and therefore simpler. At the same time, it can also construct the “classic” automation structures with a centralised PLC control system. PSS 4000: Safe monitoring of PID controllers A mandatory requirement in terms of safe monitoring of gas temperature and flow was that the intended solution should be able to implement safe PID controllers. Although there are numerous automation systems on the market that are able to monitor nonsafety-related PID controllers, only a very few PLC control systems are currently able to implement safe process control. The automation system PSS 4000 offers reliable safety and automation in one system: the PID controller is implemented via a specific software block in the software platform PAS4000. The control system PSS-universal PLC belongs to the automation system PSS 4000, which communi- AUTOMATION TECHNOLOGIES 4/2015

CONTROL AND DRIVE TECHNOLOGY cates with the higher level plant control system via Modbus/TCP and is used in each of the 14 compressor stations. It can safely monitor the gas flow, temperature, pressure, but it can also monitor and control automation functions such as sirens or signal lamps. “The key factors for us were that PSS 4000 provides safety and automation in one system, the whole thing can be implemented simply using intuitive software” says Zhu Yi Ming. And with various editors for programming in accordance with EN/IEC 61131-3 or for configuration, any changes and adjustments are easy to implement in future via software. “On this project Pilz not only supplied the technology but was also an equal partner in developing an optimum project solution, a safety expert consultant, and a supporter when programming and during the ramp-up process“ says Zhu Yi Ming. Judging by its use in the classic engineering sector, application of the modular automation system PSS 4000 on pipeline projects is still somewhat exotic. However, the wealth of solutions that can be implemented using this system, the logical structure, simple implementation and, last but not least, positive experiences in daily use, have still proved convincing: there is currently another gas pipeline project between China and Uzbekistan at the planning stage where the PSS 4000 is to be employed. Photographs: Fotolia, Stratfor.com, Pilz www.pilz.com About Company name: Pilz GmbH & Co.KG Headquarters: Ostfildern, Germany Turnover: € 260 Million Employees: 1 900 worldwide Products: Sensor technology, electronic monitoring relays, automation solutions with motion control, safety relays, programmable control systems, safe bus systems and Ethernet systems 02 Cabinet with PSS 4000 AUTOMATION TECHNOLOGIES 4/2015

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