PATH
Underground Commuter Railway Traction Power Control System
Owner:
Port Authority of NY & NJ
Location:
Metro New York City, NY
Project Description:
The Port Authority of New York and New Jersey operates a rapid transit
system under the name Port Authority Trans-Hudson (PATH).
Transporting over 215,000 passengers each day, PATH currently
connects midtown Manhattan (from a terminal at 33rd Street and 6th
Avenue) with Hoboken, Jersey City and Newark, New Jersey.
Transdyn provided a traction power control, life safety monitoring,
and facilities management system for the entire PATH system. The
system consists of eleven fully redundant and seven non-redundant
control systems in the eighteen stations on the PATH line. Each fully
redundant system consists of dual Programmable Logic Controllers
(PLCs), redundant I/O, redundant relaying and positive feedback
from each control output relay. Seven of the stations have an
emergency backup control system consisting of a local computer
controlled system executing the DYNACTM software suite, a local
workstation, and network interface to the PLC. The local control
center backup systems provide data acquisition and control
capabilities for over 5000 I/O points allocated for power distribution,
safety circuits, ventilation, security and other station facilities.