ANSIEIA 709 Powerline Communications Test Results

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ANSI/EIA 709 Powerline CommunicationsTest
Results Technology Summary

• NYC Transit, SF BART Association of American
  Railroads

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Presentation Overview
Ref LonWorks Engineering Bulletin -- LonTalk
Protocol
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Overview Summary

• What is ANSI/EIA 709?
• 709.1
• New advanced control network standard
• 709.2
• New powerline transceiver standard
• Permits piggybacking control data over existing
  wires
• Powerline Tests
• Application areas
• Subway stations
• Track and tunnels
• Rail vehicles
• Results
• Verified secure, error-free communication using
  existing wires
• Significant noise margin remains even after 3
  miles

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NYCT Power Line Communication TestCommunicating
over existing lighting circuits at 57th St.
station

• Secure Communications
• Sent data over existing lighting circuits
• Robust and error-free
• Inconspicuous
• Hard to see
• Hard to vandalize
• Installation
• Fast
• Easy
• Cost effective
• Compare with conduit at 50/foot _at_ NYCT

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Secure Data Communications in Subways Secure
data communications backbone using existing
subway wires
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BART Train Control Overlay Tests - 2001Powerline
tests for potential broken rail/silent train
detection systems
Verified secure error-free communications over
one mile using existing 220 VAC mains
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BART Transbay Tube Tests - 2001Cathodic
Protection Monitoring and load shed Communications
Verified secure, error-free communicationsover 3
miles using existing 4,160 Volt AC 3 Phase Feeders
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Freight Railroad ApplicationsAssociation of
American Railroads ECP Brake Standard

• New AAR Brake Standard
• 70 reduced braking distance on downgrades
• Tests verified trains over 3 miles long are
  possible
• Potential future applications
• Refrigeration car monitoring
• Hot axle detection
• Hazardous materials monitoring
• Telemetry of wayside device information to
  central office

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ANSI/EIA 709 Power Line Transceivers
ANSI/EIA standard for use worldwide

• Virtually any powered or un-powered wires
• AC or DC 0/12/24/48/110/220/4kV/400kV
• 0/25/50/60/ 400 Hz
• Also works over voice, PA, video or
  telephone or most other control signal lines

PLT 10A/20/21/30
ECHELON
Neuron
Coupling Circuit
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ANSI/EIA 709 Summary
Ref LonWorks Engineering Bulletin -- LonTalk
Protocol
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ANSI/EIA 709 Summary

• Features
• Signals piggyback over existing wires
• Open standard
• Widely deployed around the world
• Widely used in rail and bus transit
• Off-The-Shelf-Products
• Benefits
• Secure, error-free communications
• Easy inexpensive to install
• Interoperable with other protocols
• Wired Wireless Networks
• Secure Web

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For more information

• Transportation Applications
• Transportation Systems Design, Inc.
• Web www.tsd.org
• Tom Sullivan
• Phone [phone]
• Email tom.sullivan_at_tsd.org
• Standards Group
• LonMark Association
• Web www.lonmark.org
• Technical Information
• Echelon Corporation
• Web www.echelon.com
• Glenn Dahl
• Phone [phone]
• Email gdahl_at_echelon.com

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