Μ−64 installed in front of the cabinet door. The pad shall be placed on 6 inches of gravel borrow subbase. The concrete shall be Class A concrete conforming to the requirements of SECTION 601; PORTLAND CEMENT CONCRETE , of these Specifications.
movable shelves suitable for placing the controller, MMU, detector racks, modems, radios or any other required equipment. A slide-out document tray shall be mounted below the bottom shelf. The tray shall be of sufficient size to hold cabinet wiring diagrams and two manuals. The tray shall operate by sliding out on nylon rollers or ball bearings and opening a hinged cover to remove documents. The closed cover shall provide a suitable support for resting documents or a laptop computer. All cables shall be tied away to a llow the tray to be opened and closed smoothly without any obstructions.
Section 5.4.2.6, local controller cabinets shall be furnished with a GFI receptacle on the cabinet door and a duplex outlet within the body of the cabi net. Cabinets which are to contain a closed-loop system master controller, a local controller and auxiliary communications equipment (radios or modems) shall have two duplex outlets in addition to the door mounted GFI receptacle.
TS-2 Standards, Section 5.4.2.7, cabinets shall be provided with a “goose neck” lamp having a flexible arm and utilizing a 25 watt R14 bulb (115VAC ). The lamp shall be mounted at a location on the side panel approximately level with the load switch/terminal panel for concentrated illumination of this area. The lamp shall have its own on/off switch on the unit.
operating manuals for the controller unit, loop detec tor units, closed loop system master, modem and any other programmable field hardware supplied shall be included as part of the cabinet documentation. Three hard copy sets of all programmed data shall be supplied to the Department at the time the controller is installed in the field. Each set shall be bound and covered. One set is to remain in the cabinet, one set is to be delivered to Traffic Design, and one set is to be delivered to Traffic Maintenance.
indicate the switch’s function. Toggle switches shall indicate the state of each switch position.
the controller cabinet door. The output of the switch shall be connected to the alarm No. 1 input as defined by the NEMA TS-2 Standards, and record the opening of the cabinet door as a local alarm.
During manual operation, an extendible hand-control pushbutton shall utilize Manual Control Enable and Interval Advance to control the intersection operation. The hand-control pushbutton shall be installed inside the police door. The hand control pushbutton shall be rugged in construction with a weatherproof covering over the cord’s pushbutton switch. The auto/manual switch shall be connected to alarm No. 2 as defined by the NEMA TS-2 Standards. When the switch is placed in the manual position, it shall be recorded as a local alarm.
Μ−65(b) A Signal/Flash switch that toggles between automatic and flashing operation. To insure the controller exits flash properly, the controller External Start input shall be active in the flash position and inactive in the signal (automatic) position. Activation of the Flash switch shall be recorded as a local alarm.
Each switch shall be permanently labeled to identify its function.
main door. These switches shall be accessible only when the main door is open.
concurrent or exclusive pedestrian phases, and calls to intersection pre-empt displays.
other cabinet equipment shall not be affected by this switch.
This switch shall be labeled “Modem Power” and perform the following functions: On - When in this switch position, c onstant power shall be supplied to the modem no matter what the user defined output is set for.
Off - When in this switch position, no power shall be supplied to the modem no matter what the user defined output is set for.
T.O.D. - When in this switch position, power shall be supplied to the modem as a function of the user-defined output controlled by time-of-day programming.
Each switch shall be permanently labeled to identify its function.
number and, where appropriate, the corresponding NEMA function. All labels shall be silk screened or permanent labels.
protection installed at the power distribution panel. The surge protector shall be an EDCO ACP 340 filtering surge protector, or approved equal, and shall meet or exceed the following electrical specifications:
detector circuit. The surge protection shall be an EDCO SRA6LCA vehicle loop detection surge
Μ−66 protection device, or approved equal. The device shall be configured with the type of mounting which best accommodates the type of loop detector lead-in terminal block supplied. It shall meet or exceed the following specifications:
Differential Mode; 400 amps (8x20 microseconds). Common Mode; 1000 amps (8x20 microseconds).
interference suppressor meeting the requirements of Section 5.4 of the NEMA TS-2 Standards.
TS-2 Standards, Section 5, Terminals and Facilities, as it applies to Type 1, Configuration 3 cabinets, unless otherwise specified in these Specifications. Any power supplies must be shielded with a non-conductive material to prevent accidental contact. Sealers or compounds that are not non-conductive will not be accepted. A panel shall be provided suitable for terminating: A minimum of 16 loop lead-ins, Rack Power and Ground, Detector Call Terminations, and Phase 2, 4, 6, and 8 pedestrian pushbuttons.
fully wired for all channels. Detector channels shall be assigned as shown on the Loop Detector Diagram included on the Plans. All loop detector units shall be rack mounted. Detector units and racks shall conform to the NEMA TS-2 Standards, Sections 2, 5, and 6. Racks shall be of metal construction, providing top and bottom guides for all slots. Racks shall be bolted to the top shelf of the cabinet using wing nuts to simplify their removal. Where an emergency vehi cle priority system is being installed, auxiliary rack positions may be used instead of a separate rack to accommodate the selector modules. The Contractor shall supply and install on the upper left-hand corner of the back of the cabinet door a laminated intersection graphic and table depicting the traffic detector relay channel assignments. The diagram shall be a graphic of the intersection oriented similar to the Plans showing the locations of each loop detector. The diagram shall, at a minimum, include detector numbers, street names, north arrow (oriented similar to Plans), and controller cabinet location. The assignment information shall be included in a table, which shall include, at a minimum, approach name, detector number, terminal numbers, detector rack slot number, relay number, relay channel number, and the phase associated with each detector.
Μ−67All detector unit delay and extension timings called for on the Plans shall be programmed in the controller unit, not in the detector unit.
NEMA TS-2 Standards, Section 6, Auxiliary Devices, all load switches shall utilize optically isolated, encapsulated modular solid-state relays. Discrete components on circuit boards will not be accepted. Load switch indicator lights shall be LED type and wired on the input side of the device. The field electrical loading for flash operation shall be wired through the transfer relays such that the load on the 2-circuit flasher is as balanced as possible within the limitations of the signal phasing. Controller cabinets shall be furnished with a full complement of load switches and flash transfer relays. This requires a load switch and a flash transfer relay for each back-panel position, even it the position is not used.
Section 4 of the NEMA TS-2 Standards.
provided at all master controller locations and at selected local controllers as specified on the Plans. At these locations, a shelf mounted modem sha ll be supplied. The modem shall provide a full duplex operation using a 2-wire, dial-up telephone line, and comply with Part 66, FCC Docket 19528. The modem shall support the communications rate of the system software and synchronous and asynchronous data transfer. The modem shall be wired such that it is capable of being powered down and powered up via a user-defined controller output to automatically reset the modem. The user-defined output shall utilize an interface relay in controlling power to the modem. The user-defined output shall be initially programmed to be on at all times except for a one-minute interval starting at 1:00 a.m. each day. Originate Manual or Auto Answer operating modes shall be provided. The modem shall provide an Auto Disconnect function that will disconnect the modem due to lack of carrier after 18 seconds. The front diagnostic L.E.D.s shall display, at a minimum, the operational status of the following: Modem Ready Terminal Ready Receive Data Send Data Off Hook Carrier Detect Auto Answer High Speed
The modem reset shall be controlled by a switch on the cabinet door as described in Subsection M.15.13.2; Para. g.3(c) . The modem shall include an easily accessible on/off switch operating with power supplied from a controller cabinet duplex outlet. The modem shall have an operating temperature range of - 34°C (-30°F) to +74° C (+165°F). Care should be exercised in the organization and construction of the controller cabinet to ensure that the opening and closing of the cabinet door does not interfere with the modem’s power cable.
meet all requirements of Section 8 of the NEMA TS-2 Standards.