© 2006 Swagelok Company. IS CAN Bus – CiA DSP 103 V 1.0 Low Cost, Intrinsically Safe Transducer...
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Transcript of © 2006 Swagelok Company. IS CAN Bus – CiA DSP 103 V 1.0 Low Cost, Intrinsically Safe Transducer...
© 2006 Swagelok Company.
IS CAN Bus – CiA DSP 103 V 1.0
Low Cost, Intrinsically Safe Transducer Bus Enabling NeSSI Gen II
Rick Ales Swagelok 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 Station
Ethernet
Analyzer
Hazardous Area Class 1 Div 1 (Zone 1)
10 Meters
© 2006 Swagelok Company. Swagelok confidential. For internal use only.
IS and the Ignition Curve
Voltage = Frequency-1 * Distance
24V = Frequency-1 * 2000M
9.5V = Frequency-1 * 10M
© 2006 Swagelok Company. Swagelok confidential. For internal use only.
Communications Model
Virtual Message Path
Actual M
essage P
ath
© 2006 Swagelok Company. Swagelok confidential. For internal use only.
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
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
© 2006 Swagelok Company. Swagelok confidential. For internal use only.
IS CAN Physical Layer Topology
4 Circuits 8.5 Watts each
© 2006 Swagelok Company. Swagelok confidential. For internal use only.
NeSSI Gen II Architecture
© 2006 Swagelok Company. Swagelok confidential. For internal use only.
Gen II NeSSI Bus Open Standard
www.can-cia.org
CiA 103 DSP V1.0
April 2007
© 2006 Swagelok Company. Swagelok confidential. For internal use only.
Ex Harmonization
Div 2 Zone 2
Div 1 Zone 1
Zone 0UL 913 specifies all Div 1Equipment meet Zone 0Requirements in 2012
Safe
© 2006 Swagelok Company. Swagelok confidential. For internal use only.
Discussion?