TRAFFIC SIGNAL PARTS MANDATORY SPECIFICATIONS.pdf

TRAFFIC SIGNAL CABINET ASSEMBLIES

Cabinet Assembly. Cabinet Assemblies shall include a Type 1 actuated controller, MMU2, four (4) loop detector amplifiers, adequate number of flash transfer relays, PS175 power supply, NEMA load switches, load switch arrestors, loop detector arrestors and anything else required for a fully operational traffic signal cabinet.

Cabinet Assemblies shall meet the NEMA 3R requirements and be constructed principally of

0.125-inch thick, 5052-H32 aluminum. The aluminum shall have a mill finish per NEMA TS

2 7.7.3. Intermittent welds may be used for construction and any un-welded cabinet seams shall be sealed with clear RTV silicone. All external fasteners shall be stainless steel and no holes will be allowed in top of cabinet.

The door handles shall be stainless steel or cast aluminum. Door hinges shall be of the continuous type with a stainless steel hinge pin. Rivets are not be used to attach the hinge. The main door stop rod shall be constructed using stainless steel. The door stop mechanism shall be adjustable and capable of being securely latched in multiple opened positions including 90 degrees and a maximum of 120 degrees. The brackets attaching the stop rod to the door and cabinet shall be aluminum and welded in place. The main door cylinder lock shall be a #2 key type lock. Two (2) traffic industry standard No. 2 keys shall be provided with each cabinet and shall be made using heavy duty key blanks.

Extruded aluminum channels permanently attached to the right and left cabinet sides shall be provided for attaching adjustable shelving and mounting of other component panels. The cabinet shall have two (2) shelves installed. Both shelves shall be provided with the front edge pre-drilled with 0.25-inch holes located twelve (12) inches apart.

Physical Features.

Pull Out Drawer. A pull out drawer shall be installed and centered under the bottom shelf.

The drawer shall be made of 0.080-inch thick, 5052-H32 aluminum and come out on full extension drawer slides. The pull out drawer shall provide an approximate

16-inch x 14-inch working area and have the ability to bear a constant 25 pound burden. There shall be a compartment for document storage. The lid shall be hinged at the rear, to gain access to the storage area. The drawer will be used to store documents as well as support a notebook computer. The drawer slides shall be of the full extension ball bearing type.

Dimensions of the drawer shall be large enough to support a notebook computer and a drawer of sufficient size to hold at least two (2) copies of the cabinet drawings and other related cabinet documentation. The surface of the lid shall have a non-slip surface.

Cabinet Lighting. Cabinets shall be provided with a minimum of two (2) white light LED modules. One (1) lighting module shall be installed along the front top section of the cabinet and the second lighting module shall be installed underneath the bottom cabinet shelf in such a location as to provide direct lighting of the load bay area of the cabinet but must not interfere with the cabinet drawer operation.

Both LED lighting modules shall be controlled by a NEMA rated, commercial quality, pushbutton door switch. The cabinet lighting shall turn on when the cabinet main door is opened and shall turn off when the main door is closed or an ON/OFF NEMA rated, commercial quality, toggle switch mounted on the inside cabinet door service panel shall be provided to turn both LED lighting modules on or off.

Police Panel Switches. Police panel switches shall be provided with all controller cabinets.

All switches shall be hard wired and labeled as to their function.

NORMAL-FLASH: When this switch is in the FLASH position, all signal indications shall transfer to the flashing mode. AC power shall be removed from the load switches when the signal indications transfer to the flashing mode.

The controller unit shall operate in accordance with appropriate specifications during the flashing mode. When the switch is placed in the NORMAL position, transfer from the flash mode to normal operation shall be made in accordance with uniform code flash requirements.

SIGNAL ON-OFF: AC power shall be removed from the signal heads and the intersection will become dark when this switch is in the OFF position.

MANUAL CONTROL ON-OFF: When this switch is in the ON position, a logic ground shall be applied to the manual control enable input of the controller unit.

INTERVAL ADVANCE INPUT JACK: A manual jack shall be installed on the police panel. The jack shall inter-mate with a 3-circuit, ¼-inch diameter phone plug. The tip and ring

(middle) circuits of the jack shall be connected to the logic ground and the interval advance inputs of the controller unit. When the manual hand cord is plugged into the jack and the pushbutton is pressed, logic ground shall be connected to the interval advance input of the controller unit.

When specified in the contract documents, an interval advance cord shall be provided. The cord shall have a minimum length of three (3) feet. It shall have a ¼-inch diameter, three circuit plug connected to one end and a manual pushbutton enclosed in a hand-held enclosure at the other end. A complete cycle (push-release) of the manual pushbutton shall terminate the controller unit interval which is active except the vehicular yellow and red clearance intervals. Cycling the push-button during the vehicular yellow or all red clearance intervals shall not terminate the timing of those intervals.

Service Panel Switches. Service panel switches shall be hard wired and clearly labeled to identify as to their functions. Service panel switches shall be mounted on the service panel located on the inside of the main cabinet door. Alternate switch locations may be described in the plans or contract documents but final switch design and location shall be approved by the Engineer prior to cabinet fabrication.

NORMAL-FLASH: When this switch is in the FLASH position, all signal indications shall transfer to the flashing mode. AC power shall be removed from the load switches when the signal indications transfer to the flashing mode.

The controller unit shall operate in accordance with appropriate specifications during the flashing mode. When the switch is placed in the NORMAL position transfer from the flash mode to normal operation shall be made in accordance with uniform code flash requirements.

CONTROLLER ON-OFF: When this switch is in the OFF position, AC power shall be removed from the controller. When this switch is returned to the ON position, the controller unit shall perform normal start up functions and resume normal operation in accordance with the applicable specification.

STOP TIME-RUN-NORMAL: A 3-position manual switch shall be provided which places the controller into Stop Time mode manually or through remote input.

VEHICLE DETECTORS: A 3-position switch shall be provided for each vehicle and pedestrian detector circuit. All switches shall be located on a panel mounted on the inside of the main cabinet door. The switch panel shall be labeled CALL SWITCH. Labeling of phase number and intended function (vehicles or pedestrian calls) shall be provided for each switch.

The vehicle detector switch functions are defined as follows:

Locked Call Call is continually placed into the controller unit.

Off (center) Vehicle detector is connected to the controller unit vehicle detector input, i.e. normal detector operation.

Momentary Call Call is continuous as long as the switch is manually held in this position.

Police and Service Panel Locations. The police and service panels shall be constructed of

5052-H32 0.125-inch thick aluminum.

The police panel shall be located behind the police door which is enclosed within the main door. The police door shall be hinged and provided with a neoprene gasket seal. Access to any portion or equipment contained behind the main cabinet door shall not be accessible through any part of the police panel. The police panel shall be of appropriate dimensions to accommodate all switch or devices described within this specification, the plans or contract document. The police door shall be provided with a treasury #2 key type lock and two (2) keys for the police door lock shall be provided with each cabinet.

The service panel shall be mounted on the inside portion of the main cabinet door, adjacent to the back side of the police panel or on the left hand side of the cabinet.

Cabinet Ventilation. Cabinets shall be vented to allow dissipation of the heat generated by the equipment contained within. All cabinets shall have a thermostatically controlled exhaust fan located at the top of the cabinet that is capable of 100 cubic feet per minute air displacement. The thermostat shall be mounted on the inside top of the cabinet and shall have a nominal temperature range from 80°F to 170°F.

The intake vent shall be louvered or equivalent design to prevent rain infiltration. The vent area will be located along the bottom portion of the cabinet door. A 16-inch x 12-inch x

1-inch disposable pleated air filter shall be provided on the inside portion of the cabinet and shall fully cover the vent area.

Air Filter Assembly. Air filters shall be one piece and shall be held firmly in place against the cabinet door in order to prevent dust from bypassing the perimeter of the filter and shall fully cover the vent area. Wing nuts or thumbscrews are preferred. Air filter shall be a 16-inch x 12-inch x 1-inch disposable pleated filter.

Cabinet Sizes.

Type I Cabinet. A Type I cabinet, 51”H x 30”W x 18”D, may be used for both pole and base mounted cabinets that require a maximum eight (8) position load bay. Pole mounted cabinets do not require rear access.

Type II Cabinet. A Type II cabinet, 51”H x 36”W x 18”D, may be used for both pole and base mounted cabinets that require a maximum twelve (12) position load bay. Pole mounted cabinets do not require rear access.

Type III Cabinet. A Type III cabinet, 56”H x 44”W x 27”D, shall be used for base mount installations and shall require a sixteen (16) position load bay and rear access door.

Type IV Cabinet. A Type IV dual chamber cabinet, 56”H x 57”W x 29”D, shall be used for base mount installations and shall require a sixteen (16) position load bay, rear access door, and external generator plug. When called for in the plans, a UPS shall be housed inside this cabinet.

Type V Cabinet. A Type V cabinet, 77”H x 44”W x 27”D, shall be used for base mount installations and shall require a sixteen (16) position load bay and rear access door.

Power Distribution Panel. The power panel shall be wired to provide the necessary power to all equipment. It shall be manufactured from 0.125-inch thick, 5052- H32 aluminum. The power panel shall house the following components: Main Breaker, Auxiliary Breakers, and

Terminal Block. The panel shall be of such design so as to allow a technician to easily access the main and auxiliary breakers.

A 3-position terminal block with a removable insulated cover accepting up to AWG #4 stranded wire shall be supplied for accepting only the incoming power lines. This terminal block shall be in advance of and supply only the 30-amp main breaker, 10-amp and 5-amp

Auxiliary breakers, AC neutral buss and earth ground buss.

Ground and Neutral Busbars. A solid copper ground busbar shall be mounted on the side of the cabinet wall adjacent to the power panel for the connection of chassis ground wires. If more than one (1) ground busbar is used in a cabinet, a minimum of a AWG #6 copper wire shall be used to bond them.

The copper ground busbar shall have a minimum of thirteen (13) connector points, each capable of securing at least one (1) AWG #6 conductor.

A solid copper neutral busbar shall be mounted on the side of the cabinet wall adjacent to the power panel for the connection of AC neutral wires.

The copper neutral busbar shall have a minimum of thirteen (13) connector points, each capable of securing at least one (1) AWG #6 conductor.

Grounding and Ground Rods. Ground rods used shall be copper clad, steel rods of the diameter and length shown on the plans. Ground rods shall conform to the requirements of UL-467. Grounding rod couplers shall be UL approved, made from bronze, stainless steel or copper clad with a solid center providing 100 percent conductivity.

Single ground rods shall be driven vertically until the top of the rod is at least 12 inches below the finished ground.

Bare solid conductor copper wire, AWG 6 shall be used for grounding conductor and bonding jumpers unless otherwise stated in the plans. Bare solid conductor copper wire shall meet the requirements of ASTM B2.

The grounding conductor shall be continuous and shall be connected to a common ground system between all supporting poles and structures, to each transformer, to each sign support assembly, to each gate, and to each grounding conductor in a multi-conductor cable assembly.

Additional grounding rods electrodes (up to four (4) rods) shall be installed to obtain a maximum value of five (5) ohms to ground.

Bolted grounding connections of solder-less type made of the high strength electrical bronze with silicon bronze clamping bolts and hardware may be used; designed such that, bolts, nuts, lock washers and similar hardware that might nick or otherwise damage the ground wire will not directly contact the ground wire. Grounding splices shall not be insulated.

Exothermic welded ground connections shall be use where specified.

Terminal Strips. Conductors shall be terminated on terminal strips with insulated terminal lugs. When two (2) or more conductors are terminated on field wiring terminal strip screws, a terminal ring lug shall be used for termination of those conductors. The voltage and current rating of terminal strips shall be greater than the voltage and current rating of the wire which is terminated on the terminal strip.

Cabinet Receptacles. A 3-wire 115 Volt AC (15A) Ground Fault Circuit Interrupt (GFCI) duplex receptacle shall be provided in the cabinet for maintenance use. It shall be securely mounted near the bottom right side of the cabinet and easily accessible.

Two (2) 3-wire 115 Volt AC (15A) non-GFCI protected outlets shall be installed, one on each side of the cabinet. These two (2) outlets are used for communication or other auxiliary equipment.

Operating Line Voltage. All equipment shall be designed to operate from a 120 volt, 60 cycle AC supply. Operation shall be satisfactory at voltages from 105 volts to 130 volts. All operating voltages into and out of the controller shall be NEMA level DC voltages except for the controller AC power source (Connector A, Pin p – AC-Control and Pin U – AC Common).

Circuit Breakers. A 30-amp main breaker, with a minimum of 10,000 amp interrupting capacity, shall be provided for all cabinets to supply power to the controller, MMU, signals, and rack power supply.

Two (2) auxiliary breakers shall be provided. The first breaker, 10-amp, shall supply power to the fan, light, GFCI utility receptacle and two (2) auxiliary standard receptacles. The second breaker, 5-amp, shall be installed to supply power for the Controller Unit and MMU2. The above circuit breakers line side shall be jumpered together and will be fed from an external main circuit. A third 5-amp breaker shall be required if an ITS camera panel is called for in the plans.

Circuit breakers shall be a fixed mount, instantaneous magnetic trip-only type, fully enclosed in a molded case of insulating material rated according to the UL 489 Standard. The current carrying parts, mechanisms and trip devices shall be completely contained within the molded case of insulating material.

Each AC circuit breaker used shall interrupt the specified amperage at various voltages. Each circuit breaker shall be independently removable from the enclosure for inspection or replacement. The ON and OFF positions on each circuit breaker shall be clearly labeled. The operating handle shall be trip-free so that contact cannot be prevented from tripping by holding the operating handle in the ON position.

The circuit breakers maximum rating should always be in excess of the utilization equipment rating to provide for a short-time overload capability. The short circuit current shall be rated at the breaker's maximum voltage (ANSI) or voltage class (IEC). The continuous current rating shall be at the rated voltage for ANSI breakers or the normal current on IEC breakers.

Circuit breakers shall be such that their current rating and the instantaneous trip point and the continuous current rating are unaffected by ambient temperature variations. The instantaneous trip point shall be no greater than eight (8) times the continuous current rating.

Circuit breakers shall have built in arc flash boundary protection and quick break when tripping automatically.

Expansion Fittings. Expansion fitting shall be made from exterior and interior zinc galvanized, ductile iron, fixed and expansion jointed by rigid steel conduit sleeves. The fitting may be constructed such that disassembly is not required for installation. The fixed head may be integral with the sleeve, forming a one (1) piece body of galvanized malleable iron. Tin copper braid jumpers shall be provided.

Miscellaneous Hardware. All bolts, nuts, washers and other hardware shall be galvanized steel, stainless steel, or aluminum unless otherwise specified on the plans. Steel hardware that is galvanized shall be coated through hot-dip process in accordance with ASTM A153.

Surge Suppressors. This section describes the minimum requirements for surge suppressors including surge suppressors for electrical power and data cabling.

Transient Voltage Surge Suppressor (TVSS). The Contractor shall provide TVSS on all electrical service points and the input side of all transformers.

The Contractor shall install TVSS as follows:

(a) The placement of equipment and wiring within an outside enclosure shall be arranged so that the surge suppressors are located near the conductor’s point of entry.

(b) Surge suppressor shall be located as far as possible from electronic equipment.

(c) TVSS shall be mounted on the underside of riser and ground-mounted demarcation point breaker panel enclosures and on the underside of transformers.

(d) The surge suppressors grounding conductor shall be free from sharp bends.

All electrical interconnects shall be protected from transient over-voltages (surges) including lightning and external electromagnetic fields coming into the cabinet. All cables shall be protected from a surge coming in on the ground and load side of the cabinet. The surge protection requirements include:

(a) Surge suppressors shall be furnished for all non-dielectric cable and conductors

(video, data/signal and device/assembly power) between the equipment and the equipment cabinet.

(b) The surge suppressors shall have leads that are kept to a minimum length as recommended by the surge device manufacturer.

(c) All surge suppressor devices shall be designed and selected to meet the temperature and humidity requirements expected in this type of outdoor application. Surge suppressors including variable temperature components (i.e., PTCs) shall not impede signals at any elevated temperatures.

(d) All surge suppressors shall be UL listed (UL 1449 3rd Edition, UL 497, 497A, 497B,) and bonded to the same single-point ground point. Any DIN rail mounted SPDs shall be grounded via conductor and shall not rely solely upon the DIN rail’s mechanical connection as a grounding point.

(e) Any directional SPDs shall be clearly marked as “Protected Side” and “Unprotected

Side” and installed such that the Protected Side faces the equipment and the

Unprotected Side faces the conductors coming into the cabinet.

(f) Low Voltage/Signal Cable Surge protectors for data/signal/control cable shall meet/provide the following functionality:

(i) Peak Surge Current: 10,000-amperes for an 8x20 microsecond waveform.

(ii) Shall be rated for the appropriate voltage.

(iii) Response Time: one (1) nanosecond or less.

(iv) Life Expectancy: capable of surviving at a minimum of 25 occurrences at

2,000 amperes.

(v) Surge suppressor shall be self-resetting.

(g) Power surge protectors for power from equipment cabinet power distribution to the

System shall meet/provide the following functionality:

(i) Frequency: DC to 10MHz.

(ii) Clamping Voltage: < 30VAC (rms) or 42VDC.

(iii) Insertion Loss: < 0.2dB

(iv) Input/Output Impedance: 75 ohms, typical.

(v) Peak Surge Current: 3,000-amperes. (vi)

Response Time: 1 nanosecond or less.

(vii) Surge suppressor shall be self-resetting.

(h) Coaxial cable surge protectors are used from acceptance by the Engineer, the Coaxial

Cable Surge suppressors for coaxial cable shall meet/provide the following functionality:

(i) Attenuation: 0.3dB @ 10 MHz, typical.

(ii) Input/Output Impedance: 75 ohms nominal.

(iii) Operating Voltage of the surge protector shall match characteristics of the

ITS device/assembly.

(iv) Peak Surge Current: 5,000-amperes for an 8x20 microsecond waveform.

(v) Response Time: 1 nanosecond or less.

(vi) Surge suppressor shall be self-resetting.

(vii) Coaxial SPDs shall be installed in a manner that prevents ground loops and resulting signal deterioration. This is usually caused where the cable has different references to ground at either end and connecting SPDs at both ends that have only Pin to Shield protection completes a ground loop circuit through the Shield. SPDs having Pin to Shield protection, and separate

Shield to Ground protection are acceptable to eliminate ground loops.

Main Line Arrestors. Surge protection shall be provided that meets the requirements set forth in the above section. A main line arrestor shall be provided to reduce the effects of voltage transients on the AC power line. It shall be installed after the circuit breaker. The main line arrestor shall be sufficient to protect all equipment and devices as per the plans and the following minimum specifications.

Multi-stage Hybrid Design

Series induction filtering

Thermally protected Metal Oxide Varistors (TMOV’s)

Operating Voltage: 120 VAC

Clamping Voltage: 395 VAC

Operating Current: 15 A

Peak Surge Current: 50 kA/Mode, 100 kA/Phase

Operating Frequency: 47-63Hz

EMI Attenuation: 40 dB Typ

SPD Technology: TMOV’s w/ W-C Filter

Modes of Protection: L-N, L-G, N-G

Status Indication: Power On & TMOV’s Functional

Connection Type: ¼-20 Stainless Steel Stud

Operating Temperature: -40°F to +185°F

Solid State Main Line Relay (SSR). A normally-open, 75-amp, hybrid SSR shall be provided on the power distribution panel. The relay shall include a LED indicator to verify circuit power.

Terminal Facilities Board. The Terminal Facility shall be a hardwired load bay for NEMA

TS 2 Type 1 actuated controllers. The load bay shall include either eight (8), twelve (12) or sixteen (16) load switch positions, as specified by the plans, and shall be centered along the back of the cabinet below the bottom shelf.

All wires terminated behind the backboard, as well as any additional panels, shall be soldered.

No pressure or solderless connectors shall be used, unless they are soldered to the wire and tab after connection.

Terminal Blocks. Each field wiring terminal block shall be a heavy-duty or industrial rated UL and NEMA Class 600 volt, direct mount barrier type device. Terminal blocks shall be constructed of a single piece molded phenolic base with a twelve (12) double point, corrosion resistant, strap screw configuration. Terminal screws shall be binding head type, no smaller than size 10-32 with no less than 9/16 inch center to center spacing. Terminal block slots shall fit spade lug type terminating devices. Waterproof labeling strips shall be provided on all terminal blocks.

All current carrying parts of the terminal blocks shall be insulated from the fixture with integral plugs or strips to provide an insulating value in excess of the line-to-ground flashover voltage. If the Contractor elects to use sectionalized terminal blocks, each section shall be provided with an integral barrier on each side.

Load Switches and Flashers. Solid State Load Switches, compatible with low wattage

LED signals, shall be provided for the sequence called for on the plans. The load switch sockets shall be wired for triple-signal load switches conforming to NEMA TS 1-1994 and

NEMA TS 2-2003 requirements.

The flasher socket shall be wired for and provided with a Type 3, two (2) circuit Solid State

Flasher conforming to NEMA TS 1-1994 and NEMA TS 2-2003 requirements. It shall be possible to flash either the amber or red indication on any load switch outputs. It shall be possible to easily change the flash indication from the front side of the panel using readily available tools such as a screwdriver. A nominal flash rate of 50 to 60 FPM shall be provided.

Flash rate shall be stable when used with generators or inverters.

Support(s) shall be provided to support the Flasher and Load Switches at some point approximately half of the total length from the panel surface. Sufficient area beneath the Load

Switch or Flasher shall be clear in order to allow for free flow of air across the Load Switches or Flasher. Load Switches and Flashers must be provided with LED indicator lights on the side facing the cabinet door.

Flash Transfer Relay. All flash transfer relays, as a minimum, shall meet

NEMA TS 1 requirements. The number of relays that shall be supplied with each cabinet shall accommodate the number of signal phases as indicated in the project plans. The coil of the flash transfer relay must be de-energized for flash operation.

Cabinet Wiring. Controller cabinets shall be wired in accordance with the signal phasing plans. If phases are indicated as omitted for future use, or if phases are not shown to be used in the plans, the cabinet shall be wired for use of the phases shown as future or unused. Load

Switches shall not be provided for future or unused phases.

Wiring in the cabinets shall conform to the requirements of the National Electrical Code

(NEC) and all of these specifications. All conductors in the cabinet shall be stranded copper.

All wiring shall be laced. All wiring shall be in accordance as specified by the Electrical Cable

Section of these specifications and by Electric Cable and IMSA Specification 19 and/or 20 for Signal Wiring.

Connector harnesses for controller, conflict monitor, vehicle detectors, and accessory equipment (including NEMA defined Card Rack with power supply and pre-wired optical detection slots) shall be provided and wired into the cabinet circuitry. Connecting cables for controller and conflict monitor harnesses shall be sleeved in a braided mesh. All wires shall be securely terminated on terminal strips. The lay of the interconnect cable between the components must be such that when the door is closed, it does not press against the cables or force the cables against the various components inside the cabinets.

All communication wiring shall be bundled and routed independently of all other wiring. All live conductors shall be covered with suitable insulating material. All equipment grounds shall run directly and independently to the grounding bus.

All wires shall be cut and terminated as close as possible to the proper length before assembly.

Consideration of equipment location adjustments must be made when determining appropriate wire lengths. Excessive lengths of wire or cable shall not be allowed. All line voltage conductors used in controller cabinet shall conform to the following color code:

AC Neutral: White

AC Hot: Black

Safety Ground: Green

Signal Terminal Arrestor Grounding Bar. A field terminal arrestor grounding bar shall be provided along the back portion of the cabinet for the installation of signal arrestors. This bar shall be attached using a AWG #10 stranded copper to the earth ground circuitry.

Signal Terminal Arrestors. The field terminal arrestor shall be a three (3) circuit protective device intended for use on traffic control load relay outputs. The arrestor shall be furnished with three (3) leads and a grounding stud which will be used to attach the arrestor to the grounding bar. The field terminal arrestor shall meet the following minimum specifications:

Operating Voltage: 120 VAC

Clamping Voltage: 475 VAC

Peak Surge Current: 10 kA

Operating Frequency: 47 – 63 Hz

SPD Technology: MOV’s

Connection Type: Wire Leads

Lead Wire: 14 AWG 12” Length

Ground Stud: 10 x 32 5/8” Length

Communications Arrestor. The Controller Cabinet network shall consist of an SDLC connection between the Controller Unit and MMU2. Surge suppression for this network shall meet the requirements set forth in in the Surge Suppressors section above and the following minimum requirements below:

Operating Voltage: 5 VDC

Clamping Voltage: 8 VDC

Operating Current: 1.5 A

Peak Surge Current: 47 A (10x1000 μs)

Frequency Range: 0 to 20 MHz

Insertion Loss: < 0.1 dB at 20 MHz

SPD Technology: SAD

Connection Type: DB-15

Traffic Signal Ethernet Switch. When specified in the plans or contract documents, a traffic signal Ethernet switch shall be installed in the cabinet assembly. Ethernet patch cables of sufficient length shall be provided for all supplied Ethernet ready cabinet components.

The switch and all components shall be connected and configured.

Fiber Optic Patch Panel. When specified in the plans or contract documents, fiber optic attenuator patch cords shall be installed in the cabinet assembly.

Wireless Communications. When specified in the plans or contract documents, wireless communication components shall be installed in the cabinet assembly.

Serial Port Server or Terminal Server. When specified in the plans or contract documents, serial port servers shall be installed in the cabinet assembly.

Power-Over-Ethernet Arrestor. Surge suppression that meets the requirements set forth in the Surge Suppressors section above shall be provided. In addition, the following minimum specifications shall be supplied for loads that require Power-Over-Ethernet with isolated shielded or non-shielded cable:

Operating Voltage: 48 VDC

Clamping Voltage: 68 VDC

Operating Current: 0.75 A per Pin Continuous

Peak Surge Current: 10 kA

Insertion Loss: < 0.1 dB

SPD Technology: GDT, SAD, with series PTC

Modes of Protection: All Lines (1-8) Protected (L-L) and (L-G): Signal High-

Low; High-Ground; Low-Ground

Transmission Speeds: 10BaseT; 100BaseT; 1000BaseT

Connection Type: RJ-45

Detector Panel. A vehicle detector harness shall be provided to connect the detector panel to the card rack. The detector panel shall accept the connection of sixteen (16) field loop inputs and four (4) pedestrian detector inputs.

Detector Input Arrestors. Field Loop and Pedestrian input arrestors shall meet the requirements set forth in the Surge Suppressors section above. Field loop arrestors shall have differential and common mode protection and be provided with the following minimum specifications:

Operating Voltage: 75 VDC

Clamping Voltage: 130 VDC

Peak Surge Current: 250 A

SPD Technology: Silicon Break-Over

Pedestrian input arrestors shall be a four (4) circuit device provided with the following minimum specifications:

Operating Voltage: 30 VDC

Clamping Voltage: 36 VDC

Operating Current: 0.15 A

Peak Surge Current: 10 kA (8 x 20 μs)

Frequency Range: 0 to 20 MHz

Insertion Loss: < 0.1 dB at 20 MHz

SPD Technology: GDT, SAD, with Series PTC

Connection Type: Terminal Block with compression lugs; Terminals accept up to

10 AWG

System Detectors. The controller shall have the ability to receive input data from up to eight (8) special system detectors in addition to the normal actuated controller unit phase detectors. The user shall have the option to assign any of the phase detectors as “system detectors”.

Preemption. The cabinet shall be completely wired to accept and service calls from preemption phase selector modules, associated optical detector units and GPS units. Optical detector units and GPS unit cabinet components shall be as specified in the Traffic Signal

Preemption Systems section of this specification. Provision for two (2) standard card modules shall be accommodated in a separate card rack for preemption. The preemption card rack shall provide a minimum of eight (8) channels.

Provisions shall also be made in the cabinet to accommodate Railroad Preemption when specified in the plans or contract documents. Railroad Preemption shall meet the requirements set forth in the Traffic Signal Preemption Systems section of this specification.

While it is not necessary that a Railroad Preemption interface board be provided with the cabinet, the cabinet and back panel shall be designed so that a Railroad Preemption interface panel that uses a relay to isolate the track switch from the controller cabinet circuitry can be installed. Preempt 1 and 2, in the case of gate down preemption, shall be reserved for Railroad

Preemptions; all subsequent preemptions shall be reserved for Emergency Vehicle, Fire

Station, or Police Preemption.

Uninterruptable Power Supply. When specified in the plans or contract documents an

Uninterruptable Power Supply (UPS) System shall be installed in the cabinet assembly. The

UPS shall be installed in the cabinet and meet the requirements set forth in the Uninterruptable

Power Supply section of this specification.

Documentation. Documentation packages shall be delivered for each unit at the same time as the equipment to which it pertains.

A minimum of two (2) sets of complete schematic drawings and equipment documentation shall be supplied with each cabinet. The first copy shall be placed in a clear re-sealable print pouch of sufficient size to accommodate one (1) complete set of folded cabinet prints and placed in the pull-out drawer of the cabinet and the second copy shall be provided to the

Department. Comprehensive controller data shall be included as part of the cabinet documentation package and shall be placed in the cabinet drawer pouch. Digital copies of all cabinet documentation shall be provided to the Department before final acceptance.

The documentation packages shall contain a schematic wiring diagram of the controller cabinet assembly and all auxiliary equipment. The schematic wiring diagram, including a symbols legend, shall show in detail all integrated circuits, transistors, resistors, capacitors, inductors as well as switches and indicators. All parts shown shall be easily identified on both in the cabinet and on the schematic diagram. Model numbers shall be used on schematic diagram when available.

A complete physical description of the signal cabinet assembly shall be provided to include at least the physical dimensions of the unit, weight, temperature ratings, voltage requirements, power requirements, material of construction, and complete performance specifications.

A complete set of operation guides, user manuals, and performance specifications shall be provided.

Detailed programming instructions, preventative maintenance requirements, and troubleshooting procedures shall also be provided for the controllers. These documents shall fully cover all programming procedures and programmable options capable of being made to the controllers and associated traffic control equipment. Instructions for modifications within the range of the capabilities of the unit such as changes in phases or sequences and programming matrix boards shall be included.

An intersection diagram shall be provided on the cabinet door showing geometric configuration, lane use assignments, controller cabinet and signal pole locations, vehicle and pedestrian signal head locations, vehicle and pedestrian detector zone locations, ring- barrier phasing diagram, and detector channel assignments. The intersection diagram shall be labeled with, at a minimum, a North Arrow, main street name(s), side street name(s), signal pole numbers, vehicle and pedestrian head type(s), detector zone designations, volume density and phase recall requirements, flash sequence. All field wires within the cabinet shall be labeled to coincide with those shown on the intersection diagram.

TRAFFIC SIGNAL ACTUATED CONTROLLERS

The fully actuated controller unit shall, at a minimum, meet the requirements of both NEMA

TS 1–1989 and NEMA TS 2-2003 requirements for actuated controller units. The controller shall be of the TS 2 Type 2 configuration. The controller shall be provided with the multiple communication interface devices or properties as defined below.

10 Base-T Ethernet with front panel RJ-45 connector

IEEE defined MAC address

EIA-232 port

External Serial Fiber options for both single and multi-mode (optional as per plans)

External FSK 1200 bps modem (optional as per plans)

D connector with 37 pin configuration for TS 1 compatibility

USB port for signal controller database upload/download to the controller flash

Controller

ECOMM Compatible

The controller unit must have an alphanumeric backlit LCD display with a minimum of sixteen (16) lines at 40 characters per line. The controller must be air-cooled with sufficient ventilation openings and capable of operating between -30°F and 165°F. The controller unit must be provided with a time-of-day clock, automatic daylight savings time adjustment and a power supply for maintaining SRAM during a power outage. The controller unit shall be capable of being used in a Closed-Loop System and must be capable of operating in the role of master controller in a Closed Loop System. The controller unit firmware shall be fully compatible with the Department’s existing Traffic Signal Management Software. The

Contractor shall ensure all controller firmware versions are compatible with the existing

Traffic Signal Management Software that the Regional Department staff currently utilizes prior to submitting the controller for approval. The Contractor shall notify the Department if any special controller configuration or firmware is needed prior to submitting the controller for approval based on project requirements.

Where Flashing Yellow Arrow (FYA) operations are being used, all traffic signal controller firmware shall be capable of delaying the onset of the flashing yellow arrow.

All operator entered data shall be stored and backed up on to a flash memory device provided with the controller unit at no cost. This flash memory device shall require no battery to support value storage. No internal components of circuitry shall require battery support. The database shall be able to be backed up to a USB drive via the USB drive on the controller.

Traffic Actuated Controllers shall be of the Type shown on the plans. Type 1 Controllers shall have a Linux based processor and a minimum of one (1) USB port. Type 2 Controllers shall have the same features as Type 1 Controllers with the addition of an ATC backplane.

Type 3 Controllers shall have all features of the Type 2 Controller with the addition of the ATC module. All three (3) types of actuated controllers shall have Master controller capability, and if required shall be designated with ‘M’ in the plans.

Closed Loop Master Controller Unit. When called for in the plans, this work also consists of furnishing, installing and configuring the equipment, software and accessories necessary to connect one (1) traffic Closed-Loop Master Controller to its corresponding central or portable

PC-based Traffic Computer Facility Control System via a communications connection. The communications or network connection device will be either existing or provided by the

Contractor.

General. The Master shall monitor intersections in the system, display status and operational state and provide traffic flow data from intersection vehicle detectors. The Master shall include all communications equipment and software necessary to provide reporting to a remote terminal as well as upload/download of all local intersection data and provide timing synchronization. Communications to local controllers from the Master and from the Master to the central-office computer facility shall be by FSK, 900 MHz Radio, Broadband Radio, Serial Fiber, Ethernet, Fiber, Cell Modem or Leased Line, as indicated in the plans. The

Master shall be able to run on the same controller simultaneously operating the intersection, with the local signal control software, on any given controller unit.

System Configuration. The system architecture shall be designed to minimize the effect of equipment failures on system operation and performance. The system consists of four (4) principal elements:

Local System Intersection Controllers

Communication (Telemetry Links)

On-Street Master(s)

Central-Office Computer Software

Local System Intersection Controller. The local system intersection controllers connected to the Master controller unit shall be capable of controlling a fully actuated two (2) to sixteen

(16) phase intersection and shall meet or exceed NEMA TS 1-1989 and TS 2-2003 standards for fully actuated traffic control units. The local controller shall have internal communication capability with direct access to the data memory. The local system controller shall be capable of processing controller and detector data and provide all necessary intersection control functions. The local system intersection controller shall meet the requirements of the Traffic

Actuated Controller Unit.

Communications (Telemetry) Links. The communications links for the

“Closed-Loop” System shall perform the following functions:

Provide the medium (radio/fiber/hardwire/etc.) for two-way communications between the On-Street Master and the local intersection controllers.

Provide the medium for two-way communication between the On-Street Master and the central-office computer facility.

Error checking shall be included in both mediums to assure transmission and reception of valid data.

On-Street Master. The On-Street Master may be located at an intersection and connected via the communication network to at least 32 local intersection controllers. The Master shall be capable of implementing Traffic Responsive Control, Time Base Control, Manual Control or Remote Control modes of operation.

Analysis of sampling sensor data from at least 64 system detectors and corresponding selection of the best Traffic Responsive timing pattern shall be provided by the On-Street

Master during the Traffic Responsive mode of operation.

Automatic and continuous monitoring of system activity shall be provided by the On-Street

Master to include both Master and intersection alarm conditions.

System parameter entry shall be provided via the On-Street Master including all Master and local intersection assignment and group parameters. Master parameters shall include:

System coordination setup and pattern data entry by group

System time base event scheduler

System traffic responsive computational and pattern selection setup by group

Intersection system group and detector assignments

The On-Street Master shall provide comprehensive system report generation including, as a minimum: system, intersection, detector and failure status and history reports in addition to system performance reporting.

A RS-232C interface shall be provided on the On-Street Master to allow for printing of reports or for interconnecting to a remote central site.

To enhance overall system operation and increase system management flexibility, the On-

Street Master shall also support two-way dial-up communications to a central office computer for control, monitoring, data collection and for timing pattern updating purposes, all from a remote central office location. Continuous, seven (7) days/week - 24 hours/day, system monitoring shall be enhanced by the On-Street Master's capability to automatically dial-up the central office computer upon detection of user defined critical alarm conditions.

System Functional Requirements.

Operator Interface. In order to provide ease in programming and operation, the system shall provide a simplified user-friendly menu format at each local, master and central office facility. No special programming skills shall be required for the user to fully access and operate this control and monitoring system at any level.

All programming, both of the local intersection controllers and the On-Street Master(s) shall be via a front panel keyboard and display, driven by English Language menus. All data change entries will be automatically verified against established ranges prior to acceptance to prevent programming data errors. Data access shall be controlled by user- definable access controls.

System Traffic Control. The system shall have the capability of controlling a minimum of sixteen (16) vehicle phases and eight (8) pedestrian phases. The system shall have the capability of implementing a minimum of four (4) timing rings, fifteen

(15) alternate sequences, and sixteen (16) offsets.

The system shall provide the capability of selecting any of the following operational modes on a group basis:

Traffic Responsive

Time Base (Time-of-Day/Day-of-Week)

Remote (External Command)

Manual (Operator Entry)

The system shall be capable of implementing system FLASH and system FREE operation. The system shall have the capability to command, on/off based on time, up to eight (8) independent special functions.

Detectors. The system shall have the capability of accepting and processing data from at least 632 system detectors for Traffic Responsive program selection.

Pattern Selection. In addition to providing Manual and Remote program selection capability, the Master shall provide for Traffic Responsive and Time Base modes of operation for timing pattern selection.

Traffic Responsive Mode. Traffic plan selection in the Traffic Responsive mode shall be user-enabled and supplied with the controller, per the plans and specifications. The pattern selection shall be based on sampling detector volume and occupancy analysis by the On-Street

Master.

Time Base Mode. The system shall provide the capability of implementing time-of-day, day-of-week and week-of-year control for each of the two (2) groups using an internal time clock referenced to the 60-Hz AC power line frequency for its time base. The Time Base mode shall contain automatic adjustment for leap year and daylight savings time changes.

The system Time Base mode shall provide, as a minimum, 100 events each capable of requesting any of the 48 traffic control patterns along with Traffic Responsive override enable or auxiliary events consisting of enable/disable any of up to four (4) system-wide special functions and setting sample and log interval time periods.

System Control Priority. The system coordination control (program-in- effect) for each group shall be selected on a priority basis. The priority from highest to lowest shall be as follows:

Manual Control Entry

External Control (Remote Command)

Time Base Control (Time-of-Day/Day-of-Week) (Traffic Responsive control will prevail whenever Traffic Responsive Override Enable is active and the selected cycle length is greater than that being commanded by Time Base)

Traffic Responsive Control

Measures of Effectiveness. The system shall have the capability to report selected Measures of Effectiveness (MOE's) on an intersection basis. MOE calculations shall be made on all phases by the local system intersection controller and as a minimum shall include measures such as: volume, number of stops, delays and green utilization. These measures shall be calculated on the basis of the active timing plan. Alternate ways of reporting MOE'S may be approved on a case-by-case review.

Uploading and Downloading. The system shall provide, for any selected local system intersection controller, the capability of uploading and downloading any or all, new or modified local intersection parameters from the central-office computer and the Department

Central Traffic Signal Management Software, and shall include, as a minimum, all: Phase

Timing and Unit Data; Coordination Data, Time Base Data; Preemption Data, System

Communication Parameters, System Traffic Responsive Data, and any other System Data residing at the intersection such as Detector Diagnostic Values, Report Parameters and Speed

Parameters.

During either uploading or downloading operations, normal traffic control operations shall not be suspended. All data shall be continually accessible and may be displayed at the On- Street

Master or the central office computer.

System Monitoring and Diagnostics. The system shall automatically and continually monitor system activity and log/report occurrences of Master and intersection alarm conditions. All alarm condition events shall include at the intersection, (Master and central-office computer) an alpha-numeric description of the event as well as the time and date of occurrence.

As a minimum, monitored master alarms conditions shall include:

Insufficient or Improper Data

Failed Computational Channels

Failed System Detectors

Intersection Communication Failure

Failed Controllers

Minimum of six (6) special user defined alarms for user application flexibility

Monitored intersection alarms conditions shall include as a minimum:

Cycle Faults and Failures

Coordination Failures

Voltage Monitor

Conflict, Local and Remote Flash Conditions

Preempt

Local Free

Minimum of six (6) special user defined alarms for additional user flexibility.

When the Master detects a critical alarm condition, as defined by the user, it shall automatically dial-up the central office computer and report the condition. On a BUSY or NO

ANSWER, the system may be programmed, at user option, to alert a secondary computer.

The system shall also automatically and continually monitor, verify and attempt to correct

Sync Pulse, Time Base Clock and Pattern-In-Effect. The system shall provide capabilities to perform diagnostics on system and local detectors, communications and intersection operations. When a fault has been detected, an indication shall be provided. It shall be possible to isolate the fault to the failed unit from controls and indicators available on the Master unit.

Auxiliary equipment such as a data terminal or CRT shall not be required to identify the failure.

Real Time Display. The Master shall provide for any selected local system intersection controller,…