NeSSI Update An Implementation of the Generation 2 Bus Siemens Activities November 2006

Topics Summary Siemens activities Review of key bus requirements Current status of Siemens implementation

Summary of Siemens Activities Siemens is implementing a large analyzer system project Owner has requested NeSSI Generation 2 sampling systems Siemens is proposing an implementation Compliant with project time frame Based on available technology but consistent with long term NeSSI vision Cooperative with major substrate and component suppliers

Initial Implementation “Smart” analyzers Smart modular process sample conditioning implementation through the cooperation of: Siemens CIRCOR Instrumentation Technologies Parker Hannifin Swagelok Siemens Maxum edition II GC with integrated NeSSI Generation 2 Bus Control capability. I.S. Power Supply Intrinsically safe, Generation 2 Bus V P T A Sampling systems built with substrates and smart, Generation 2- compatible components. SAM functionality is integral to the analyzer

Initial Implementation “Dumb” analyzers Continuous Gas Analyzers with system control and network integration provided by Siemens Network Access Unit (NAU) with integrated NeSSI Generation 2 Bus Control capability. I.S. Power Supply Intrinsically safe, Generation 2 Bus V P T A Sampling systems built with substrates and smart, Generation 2- compatible components. SAM functionality is external to the analyzer

Review of Key Generation 2 Requirements 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 Complete; Available from a variety of suppliers. Lots of discussion. Various standards considered; none adopted. Various implementations are possible.

Key Bus Physical / Functional Requirements Sampling System Sampling System Sampling System Analyzer Analyzer Analyzer Analyzer House (typical) Note: ** Often, sampling systems are mounted separately from related analyzer. ** Some systems mounted attached to analyzer. Analyzer may be up to 10m from sampling system. Total cable length <=20m Number of bus “instances” to be limited to simplify analyzer control and reduce cost; <= 2 instances preferred, excluding power sources Bus to support very large number of participating component and analyzer suppliers (unlimited ~ >1000’s) Bus to provide for sensing and control of: valves, pressure, flow, temperature Component power to be supplied via bus (rather than separate power bus) to simplify I.S. and physical issues Analyzer Local Power and Air

Key Bus Physical / Functional Requirements (Continued) Components to be mounted in Division 1 / Zone 1 hazardous area. Bus to be intrinsically safe and to support components mounted in hazardous area Design goal for flammability ignition temperature to be T4 (135°C) with minimum at least T3 (200°C). Component ambient temperature to be >=70°C Sampling system to be capable of supporting at least 30 separate streams Bus to support at least 200 component / functional instances Bus to support component types in any combination up to the total number of components in the system. Bus to support at least 4 simultaneously active valves Bus to supply necessary component power management functions Bus to support replacement of components while live without interruption of bus operation Bus to provide for control of high-power components that do not draw power from the bus itself (eg. heaters) Interior of cabinet is considered hazardous due to leakage of flammable gases in a closed area. Mounting area may be hazardous or not. Note: Requirements listed in no particular order.

Key Bus Requirements Functions Defined by Bus Method of human interface for SAM. External communications Bus must provide a method for analyzers to get “on” the bus. Bus must provide a method for components connect “to” the bus… Analyzer SAM “SAM” may be either a physical device or a software implementation in the analyzer. V T P A

Status of Siemens Implementation Overview I.S. Power Supply(ies) As needed… Media Access Controller Chip (chip spec and burn image by Siemens; assembly by component manufacturer) Intrinsically Safe NeSSI Generation 2 Bus Bus buffer and I.S. barrier Existing I/O Link with proprietary protocol Siemens GC Mechanical component Component interface electronics (by component manufacturer) Substrate

Status of Siemens Implementation Analyzer and software Communications Software / Protocol: existing proprietary, complete External bus Buffer / drivers and I.S. barriers: in test I.S. certification: preliminary review complete EMI / RFI testing: bus validation proven; components pending Robustness, bit error rate testing: bus validation proven; components pending Components Media Access Controller chip: Version 1 operating in test Component interface and software: in test I.S. certification: pending Component functions: in test Field Schedule Live demonstration at engineering facility: November 2006 Planned field delivery: 2007 Compatibility with NeSSI Vision Direct implementation of NeSSI concept; meets all key requirements Architecture consistent with other Bus technologies currently being considered (CAN, Fieldbus, Profibus)