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Let’s Do It!

Let’s Do It!. Using NeSSI IFPAC: February 2006. A Bit Of Philosophy. Some projects are easy to get started: A clear goal One way to proceed with one set of benefits and problems A clear task to do. Some projects are more difficult to get started: Various overlapping objectives

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Let’s Do It!

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  1. Let’s Do It! Using NeSSI IFPAC: February 2006

  2. A Bit Of Philosophy • Some projects are easy to get started: • A clear goal • One way to proceed with one set of benefits and problems • A clear task to do • Some projects are more difficult to get started: • Various overlapping objectives • Multiple, valid ways to proceed with differing benefits and problems • Several tasks to be accomplished This is particularly true when the benefits and problems must be estimated and you are lacking in practical experience because you’re dealing with a new idea.

  3. So What Does a Project Manager Do? • Stick to a schedule • Stick to a budget • Sometimes, you need to do something – maybe ANYTHING – even if it’s not perfect – in order to get things going. • This can be true EVEN if you’re dealing with possible rework later on. • On a project intended to result in the benefits of doing a thing better: • The costs continue to occur even if you do nothing; • The benefits NEVER occur if you do nothing!

  4. Sometimes… …you just have to shoot the engineer and start production.

  5. Dumb Analyzer Smart Analyzer HMI SAM SAM HMI HMI The NeSSI Vision Air Air Power Power

  6. SAM HMI The Vision – One More Point Dumb Analyzer Ax

  7. Dumb Analyzer Smart Analyzer HMI SAM SAM HMI HMI The NeSSI Vision Air Air Power Power

  8. Dumb Analyzer Smart Analyzer HMI Doing This Today HMI Air Air Air Power Power

  9. The Benefits • Reduced Cost • Size – space consumption • Utility consumption • Engineering • Assembly • Maintenance • Higher Availability • Better intrinsic reliability • Higher MTBF • Shorter MTTR • Reduced training cost for maintenance / repair • Parallel paths – back up hardware – fail-safe design • Improved Performance • Reduced volumes • Shorter flow paths • Other?

  10. Pieces Of the NeSSI Idea • New mechanical components • Modular • Standardized mounting platform • Interchangeable function • New electrical interconnection • Serial connection – plug in • Intrinsically safe • Self-identifying components • New smart design features (SAM) • Helpful HMI • Programmability • Standardized, transportable user programming

  11. Tabulating the Benefits X O X X X X X X X O X X - X X X X O X X X

  12. Dumb Analyzer Smart Analyzer HMI SAM SAM HMI HMI The NeSSI Vision Air Air Power Power

  13. Dumb Analyzer Smart Analyzer HMI PLC SAM HMI HMI The NeSSI Vision – Partial Implementation Vendor selection: Fieldbus CAN Open I2C Other Vendor selection Air Air Power Power

  14. A Bit More On the Bus Question • Fieldbus • Advantages:Intended for field process use; well defined; widely deployed; device definition available; IS available… • Disadvantages:??; Join in costs; stack costs; development knowledge; support resources • CAN Open • Advantages:Inexpensive; very rugged chip set; very widely deployed; device definition available • Disadvantages:??; IS not yet available; intended for automotive, not process • I2C or Other • Advantages:Extremely inexpensive; very widely known; no development overhead; electrical devices defined • Disadvantages:IS by third party; not originally intended for outside the box; device definitions may be limited

  15. Another Note • The bus questions is only ONE of the issues awaiting standardization • The bus question is probably the LEAST difficult issue!

  16. Dumb Analyzer Smart Analyzer HMI PLC SAM HMI HMI So again – so MUCH is there now… Vendor selection: Fieldbus CAN Open I2C Other Vendor selection Air Air Power Power

  17. Mechanical components are here Electrical interface is here in a variety of forms NeSSI standard not agreed= > limited interchangeability= > some components not available Intrinsic safety not standardized= > field inspection required SAM can be implemented by PLCs and some “smart” analyzers in a variety of ways HMI features controlled by PLCs Interchangeability of software modules is limited So, there are some limitations that are not available until the NeSSI committee completes it’s actions Many valuable benefits are here, however There might be a cost of retrofit in the future – IF it was desirable in the future to shift to a pure NeSSI standard The architecture and philosophy is available now Retrofit costs might not be extensive The retrofit itself is optional So – why wait?

  18. Conclusions • Users should implement with what is available now • Use “closest available” from their preferred supplier • Be sure “closest available” is in the same direction as NeSSI is going • Don’t worry if “closest available” does not exactly match in the future • Plan to field retrofit IF desirable and needed • Siemens • Plans to support this approach using our available busses now • Plans to continue to support the NeSSI efforts toward full standardization

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