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IS CAN Bus – CiA DSP 103 V 1.0. Low Cost, Intrinsically Safe Transducer Bus Enabling NeSSI Gen II Rick Ales Swagelok Company. Analyzer. 10 Meters. V. A. P. T. MPC Gen II Architecture. Ethernet. Remote Operator Station. Hazardous Area Class 1 Div 1 (Zone 1). IS NeSSI Bus. Flow
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IS CAN Bus – CiA DSP 103 V 1.0 Low Cost, Intrinsically Safe Transducer Bus Enabling NeSSI Gen II Rick Ales Swagelok Company
Analyzer 10 Meters V A P T MPC Gen II Architecture Ethernet Remote Operator Station Hazardous Area Class 1 Div 1 (Zone 1) IS NeSSI Bus Flow Sensors NeSSI Device Sample System Sensor Analyzer Manager SAM
Voltage = Frequency-1 * Distance 24V = Frequency-1 * 2000M 9.5V = Frequency-1 * 10M IS and the Ignition Curve
Virtual Message Path Actual Message Path Communications Model
IS CAN Major Parameters • The CAN physical layer ISO11898-1,2 & CiA301 • Co-cabled 10m max Single power source only • 3.3V Driver 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
IS CAN Physical Layer Topology 4 Circuits 8.5 Watts each
Gen II NeSSI Bus Open Standard CiA 103 DSP V1.0 April 2007 www.can-cia.org
Ex Harmonization Zone 0 Div 1 UL 913 specifies all Div 1 Equipment meet Zone 0 Requirements in 2012 Zone 1 Div 2 Zone 2 Safe