Controller Art. 1073.01 999 The transmitter shall not generate voltage transients on the battery input line which exceed the battery voltage by more than 4 V.
energy from one or both of two axially opposed directions, as indicated on the plans.
The internal circuitry of a detector unit shall be potted in a semi-flexible compound for moisture resistance.
The standard operating amperage shall be less than 6 A.
Internal circuitry shall prevent electrical output due to steady state ambient light.
The confirmation beacon shall be a weatherproof floodlight fixture with a 150 W long life floodlight.
The detector amplifier shall have at least two channels and the capability of interfacing with another detector amplifier for channel expansion.
The detector amplifier shall have LED indicator lights to indicate power on, light energy being received, and channel called.
The detector amplifier, when actuated, shall continue to operate for at least six seconds after any interruption of light energy.
The detector amplifier shall sustain no permanent damage when subject to a transient produced by the discharge of a 10 microfarad capacitor charged to 600 V and applied to the AC line.
1073.01Traffic Actuated Solid State Digital Controller. A traffic actuated
solid state digital controller shall be according to NEMA Standards for Traffic Control Systems, TS 2 and fully compatible with the National Transportation Communications for ITS (Intelligent Transporation Systems) Protocol (NTCIP) standards. Additionally, the controller shall be of digital design having eight independent phases and four overlap phases and shall be according to the following.
on a leading left turn phase (1, 3, 5 or 7) from being served prior to crossing the barrier if the opposing through phase (2, 4, 6, or 8) is on, and thus avoiding left turn trap.
Art. 1073.01 Controller 1000
ensure a minimum RED signal indication in a phase following the YELLOW CHANGE interval of that phase.
length, determined by the difference between the starting point of the coordinated phase green and a system reference point.
to any independent movement(s) of traffic.
utilize a menu structure displayed on a screen. The software shall display on one screen any phase associated parameter for all eight independent phases. The controller shall be capable of being programmed from the front key panel.
Data Storage. All controller programming data shall be retained utilizing EEPROM technology.
connector to interface with a peripheral device. USB or alternate connectors may be substituted with approval of the Engineer.
time base coordination as specified in Article 1073.01(c)(1).
signal according to Article 1073.01(c)(2).
key and Ethernet port. The data key shall be used for controller database backup, transfer, and management.
The controller shall contain a sufficient memory to retain and implement the following programs and shall be manually programmable by a user from the front panel.
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