© 2006 Swagelok Company. IS CAN Bus – CiA WD 103 Update Low Cost, Intrinsically Safe Transducer Bus Enabling NeSSI Gen II Rick Ales and Doug Nordstrom

© 2006 Swagelok Company.

IS CAN Bus – CiA WD 103 Update

Low Cost, Intrinsically Safe Transducer Bus Enabling NeSSI Gen II

Rick Ales and Doug NordstromSwagelok Company

© 2006 Swagelok Company. Swagelok confidential. For internal use only.

MPC Gen II Architecture

V TPA

NeSSI Device Sample System

FlowSensors

Sensor Analyzer Manager SAM

IS NeSSI™ Bus

Remote Operator StationEthernet

Analyzer

Hazardous Area Class 1 Div 1 (Zone 1)


IS CAN Major Parameters

• The CAN signaling spec. ISO11898-1,2 & CiA301• Co-cabled 10m max Single power source only • 3.3V Transceiver 1/3 the Power • Power bus specification P+F RSD2-PSD-EX4.43• M12 or M8 Connectors 2 Power and 2 CAN wires• Area Classification Class 1 Div 1 (Zone 1)

Entity Parameters

VOC (V) ISC (A) Groups CO (uF) LO (uH)

A, B (IIC) (Acetylene & Hydrogen) 0.8 10

9.5Vdc 1.0 A C (IIB) (ethylene) 2.4 40

D (IIA) (propane) 6.4 80


CiA WD103 Organization

• Joshua Pearl IXXAT Co. Chairman• Reiner Zitzmann CAN in Automation Secretary

• Swagelok• ABB• Siemens• Texas Instruments• Pepperl + Fuchs• Turck• Parker Hannifin• Circor

www.smartshs.org

www.circortech.com

Complete, Modular, Ready Today

CIRCOR Tech NeSSi™ Product Development

& Market Snapshot

Patrick LoweryIFPAC 2007, 1.29.07

www.circortech.com


ProgressProgress

At present, CIRCOR Tech has built and lab tested several different categories of sample system devices based on the Siemens I2C Maxum™ GC Digital Bus

Pressure Sensor Solenoid Pilot Valve Fluid temperature probe Pressure, flow combination sensors

2nd iteration with IS design circuits are in process for All the above components, plus Multi-variable sensor (Pressure, temp, flow) Low-powered combi-valve for closed loop, IS (Zone 1, Div 1), flow

and pressure control Filter monitoring modules

Maxum™ is a trademark of Siemens Energy and Automation

www.circortech.com


CIRCOR Tech “NeSSi-Bus” DevicesCIRCOR Tech “NeSSi-Bus” Devices

www.circortech.com


ProgressProgress

In addition, preparations are being made to test power supply schemes for low powered CAN Bus as per the CiA (CAN in Automation) Intrinsically Safe CAN Bus Working Group

Working network of sensors, valves, and control devices will be online in late Feb according to proposed IS power supply and communication scheme

CIRCOR Tech Core sensing and control modules will have different bus flavors available according to end user or analyzer OEM preference (I2C, CAN Bus, Modbus, RS-485)

Will be working with CAN and other PLC and/or hybrid controller companies to bring control solutions for retrofit activity outside of smart GC’s

www.circortech.com


Mainstream customers will not adopt a “discontinuous” technology without: Having the “whole product concept” fulfilled

Having the entire core product (s) augmented by EVERYTHING that is needed for the customer to have a compelling reason to buy

Distributors or sales people skilled in the new technology Good warranty, strong company, and strong support 2nd Sources and a Competitive Marketplace

This includes the product (s) along with training, support, manuals, cables, connectors, accessories, additional hardware and software, etc.

Example: One cannot implement an IS CAN Bus solution without a certified IS Power Supply, an IS CAN Bus Isolator Repeater, Special Cabling, Wiring Documentation, and Config. Software

What’s Next?What’s Next?

www.circortech.com


What’s Next?What’s Next?Example of IS CAN Bus Network (courtesy of CiA IS CAN Bus working group

Needs further development and certifications

Being developed

Being developed

www.circortech.com


What is still needed to fulfill the Whole Product Concept for Digital Bus? More power supply components Repeaters, Isolators, and Barriers Connectors and Cabling Configuration Management Software A Standalone SAM (Sensor Actuator Manager) for non-GC

analyzer applications with HMI

What is needed for overall NeSSi system success? End users must “change behavior” in order to adopt a

discontinuous technology innovation At a certain point, innovation must cease to allow customer to

digest what is currently being offered. Otherwise, they are waiting on the next revision


www.circortech.com


Examples of what to expect Digital bus system maintenance will require software and hardware

interaction between analyzer and sample system Could get stuck in information overload mode if streaming data is

provided rather than mission critical decision making information Sample system purge systems go away, potentially exposing the

digital devices to concentrated chemical vapors continuously Compromises may have to be made to make digital bus sensors cost

effective in these extreme environments IP65 ratings a necessity, corrosive resistance a must, 85 deg C operation Hot Swap, Plug and play, C1D1, Zone 1 (possibly Zone 0) certifications

become necessary Digital devices must be field addressable rather than “software

addressable” which means that windows, access ports, must be available Some sort of visual indication of system health would be desirable rather

than going back and forth between SHS and analyzer CAN IT ALL BE ACHIEVED COST EFFECTIVELY???


www.circortech.com


Examples of what to expect, cont. Energy budgets will become important due to the relatively high cost

per milliwatt of special IS power supplies Terms like “average cost per node”, and “average power per node”,

will used to as a technical selling advantages for smart digitally controlled sample systems

Multi-function, multi-variable devices will be leveraged to gather multiple pieces of information with a single bus node, minimizing connection cost

Digital bus node functionality and failure modes (FMEA) will have to be taken into account when performing system design and safety reviews of smart sample systems

Will integrators adopt this responsibility quickly?


Documents

© 2006 Swagelok Company. IS CAN Bus – CiA WD 103 Update Low Cost, Intrinsically Safe Transducer Bus Enabling NeSSI Gen II Rick Ales and Doug Nordstrom