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Process Gas Chromatography Siemens Process Chromatographs CPAC-NeSSI Report.pptSlide 1; November 8, 2007 Criteria for Design and Specification Discussion.

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Presentation on theme: "Process Gas Chromatography Siemens Process Chromatographs CPAC-NeSSI Report.pptSlide 1; November 8, 2007 Criteria for Design and Specification Discussion."— Presentation transcript:

1 Process Gas Chromatography Siemens Process Chromatographs CPAC-NeSSI Report.pptSlide 1; November 8, 2007 Criteria for Design and Specification Discussion at CPAC / NeSSI Regarding NeSSI Generation 2 Bus November, 8, 2007 Bob Farmer

2 CPAC-NeSSI Report.pptSlide 2; November 8, 2007 Process Gas Chromatography Siemens Process Chromatographs Topics Overview; terminology Criteria regarding bus and system Criteria regarding components and component parts

3 CPAC-NeSSI Report.pptSlide 3; November 8, 2007 Process Gas Chromatography Siemens Process Chromatographs Basic Bus Configuration and System Concept V T P A Controlling Unit (SAM) BBBB

4 CPAC-NeSSI Report.pptSlide 4; November 8, 2007 Process Gas Chromatography Siemens Process Chromatographs Extended System Concept V T P A Controlling Unit (SAM) BBBB DC Power AC Power ? ?

5 CPAC-NeSSI Report.pptSlide 5; November 8, 2007 Process Gas Chromatography Siemens Process Chromatographs Extended System Concept V T P A Controlling Unit (SAM) BBBB DC Power AC Power B B Cabinet System Environment Ambient Environment

6 CPAC-NeSSI Report.pptSlide 6; November 8, 2007 Process Gas Chromatography Siemens Process Chromatographs SAM – including Bus source and software Component Electrical Implementation NeSSI Substrates by: Swagelok, Parker or CIRCOR Proprietary mechanical NeSSI component by component vendors Bus including drivers and power source Proprietary component-specific electronics by component vendor Bus electronics; Intrinsic Safety barriers; and Standardized interface to component electronics Assembly and certification of the complete component Bus Definition Point of Bus Interface Substrate Definition Point of Substrate Interface

7 CPAC-NeSSI Report.pptSlide 7; November 8, 2007 Process Gas Chromatography Siemens Process Chromatographs Conditions To Be Considered In Bus Design Overall system configuration and size Minimum Typical Maximum Ambient environment Impact on bus external to system enclosure System environment Impact on bus internal to system enclosure Impact on components and devices in system Component capabilities and requirements Power issues Native capabilities and implementation methods regarding safety concerns Market volume: available development resource commitment and impact on bus interface development

8 CPAC-NeSSI Report.pptSlide 8; November 8, 2007 Process Gas Chromatography Siemens Process Chromatographs Bus Design Criteria Capacity Number of devices Types of devices Participating suppliers Physical Issues / Installation IP ratings / protection Ambient conditions Certifications / safety Chemical resistance Electrical Length Installed base / compatibility Load capacity / load management Power distribution Interruption / interchange Reliability / EMI / RFI Instances / continuity Software Device representation Device function Maintenance issues Configuration / addressing / identity Component ambient temperature to be >=70°C Design goal for flammability ignition temperature to be T4 (135°C) with minimum at least T3 (200°C). Capability for the standard functions to be implemented in a variety of ways. Number of components on bus: Typical: 5-15 Common: Maxum: 200 Power Requirements: Sensors: 10-40ma Controllers: 20-70ma Valve pilots: ma

9 CPAC-NeSSI Report.pptSlide 9; November 8, 2007 Process Gas Chromatography Siemens Process Chromatographs Cabling Issues Cable size, bend radius, height Connection methods and system design Jacket materials Cost

10 CPAC-NeSSI Report.pptSlide 10; November 8, 2007 Process Gas Chromatography Siemens Process Chromatographs Other Product Marketability Issues System responsibility Supplier: Integrator, component manufacturer, bus provider System elements: Bus master, components, cables and peripherals Field support Training Configuration and implementation difficulties Issues with interchangeability Spare parts and long term support Field diagnosis and repair plan Component support life: longevity in a capital investment versus short life span of electronic and software techniques

11 CPAC-NeSSI Report.pptSlide 11; November 8, 2007 Process Gas Chromatography Siemens Process Chromatographs Questions - Discussion


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