System Configurations; Type 170 Controller Installations; Nema Controller Installations; Installation - Type 170 Controllers - GTT Opticom GPS System Installation Manual

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5.4 System Configurations

This section describes two configurations for
installing Opticom™ GPS System Phase Selectors:
Type 170 controller installations and NEMA
controller installations. Determine which
configuration applies to your system, then go to
the section number shown for the installation
instructions.
NOTE: Read through the section for your
configuration and perform the applicable
installation procedures, then go to Section 8 to
check out the installation.

5.4.1 Type 170 Controller Installations

CA/NY Type 170 controller cabinets (and some
NEMA cabinets) have input files that will accept
one phase selector. Logic wiring is factory
installed in the cabinet for the phase selector.
Power for the phase selector is provided by an
external power supply.
See Section 5.4 for installation of phase selectors
into Type 170 controllers.

5.4.2 NEMA Controller Installations

NEMA controllers with priority control inputs
usually require a card rack. Each phase selector
plugs directly into the card rack. The card rack
wiring harness provides inputs and outputs to the
traffic controller system hardware.
See Section 5.5 for installation of phase selectors
into NEMA controllers.
5.5 Installation — Type 170 Controllers
These instructions include:
•
Installing the phase selector. See Section
5.4.1.
•
Connecting the radio/GPS cable to the phase
selector. See Section 5.4.2.
•
Installing the auxiliary interface panel.
See Section 5.4.3.
•
Wiring for green sense.
See Sections 5.4.4 and 5.4.5.
•
Cabling for remote communication.
See Section 5.4.6.
Intersection Equipment Installation Instructions

5.5.1 Phase Selector Installation

Improper or incomplete programming of the
traffic controller may cause improper
operation of the traffic signals, which may
result in accidents and/or injuries. To avoid
this problem, verify that the operation of
the traffic controller is appropriate for your
needs before, during, and after actuation of
the priority control inputs. Improper
operation of the traffic signals may result in
unsafe driver action.
Two input file slots are dedicated for use by
Opticom GPS System Phase Selectors. These slots
are usually J12 and J13 in the lower input file.
They are pre-wired and have a direct association
with particular priority control inputs to the traffic
controller. Both J12 and J13 supply two priority
control inputs to the traffic controller. Refer to
your cabinet drawings to verify the slots, which
are usually referred to as EVA, EVB, EVC, or EVD.
The outputs from the phase selector are
connected to the preemption inputs of the traffic
controller. Each phase selector output must be
connected to a separate controller preemption
input. Consult the manual for your controller to
determine if the preemption inputs are handled
with the same priority. For some traffic
controllers, preemption inputs one and two are
intended for railroad and draw bridge preemption
and are given precedence over the rest of the
preemption inputs.
WARNING