Traffic Signal Cabinets Specifications.docx

TRAFFIC SIGNAL CABINETS SPECIFICATIONS

COMMODITY SPECIFICATIONS

Provide and deliver F.O.B. Helena, Montana, Traffic Signal Cabinets/Components as specified herein or approved equal. Demonstration of proposed equipment may be required. The cabinets must be wired to accept the controllers described in Sub Section 2.3 EIGHT PHASE SIGNAL CONTROLLER and the conflict monitors in Sub Section 2.6.2.4 or malfunction management units in Sub Section 2.7.2.4, and the preemption system in Sub Section 2.5., but will not include them with the cabinets.

EQUIPMENT

0. PERFORMANCE REQUIREMENTS

Equipment failing to meet the Department’s performance requirements will be rejected and returned at sole expense of vendor. All components used are to be easily and readily available. Equipment manufacturer will maintain a parts supply for all components for a minimum of ten (10) years after the last date of manufacture. If a proprietary part fails, it must be furnished for replacement at no cost.

0. TRAFFIC SIGNAL EQUIPMENT SPECIFICATIONS

The traffic signal equipment shall conform to one of two National Electrical Manufacturer’s Association (NEMA) specifications according to which configuration is ordered:

0.1.1. TS1 configuration

National Electrical Manufacturer’s Association (NEMA) Standards Publication No. TS 1-1976 through TS 1-1989, and any revision thereof, for traffic control systems.

0.1.2. TS2 configuration

National Electrical Manufacturer’s Association (NEMA) Standards Publication TS 2-2003 Traffic Controller Assemblies with NTCIP Requirements Version 02.06, and any revision thereof.

Both TS1 and TS2 specified equipment shall also comply with the Radio Manufacturers Association, National Electric Code (NEC), American Society for Testing and Materials (ASTM), American National Standards Institute (ANSI), manual on Uniform Traffic Control Devices (MUTCD) and state and local requirements.

All items not covered by these specifications shall conform to Montana Department of Transportation Standard and Supplemental Specifications for Road and Bridge Construction, 2020 Edition. Traffic signal cabinets shall also comply with NEMA specifications where applicable.

0. EIGHT PHASE SIGNAL CONTROLLER

Cabinets must be wired to meet all requirements of this specification, specifically the traffic signal controller (Siemens M50/M60), and emergency pre-emption specifications contained herein.

The Department currently installs exclusively Siemens M50/M60 signal controllers with TS2 type 2 configuration, which must be accommodated by the traffic signal cabinets in both TS1 and TS2 configurations.

0. EIGHT PHASE “P” CABINET CONSTRUCTION SPECIFICAITONS: TS1 AND TS2

0.3.1. The controller cabinet shall be equipped with all auxiliary equipment and plug-ins required to operate 8 vehicle phases, 4 pedestrian phases and 4 overlap phases.

0.3.2. The cabinet shall be designed for 16 channel operation. Loadswitches 1-8 shall be vehicle phases 1-8; load switches 9-12 shall be pedestrian phases 2, 4, 6, 8; Load switches 13-16 shall be overlaps A, B, C & D. These load switch sockets shall be configured in this manor without rewiring the back side of the load-bay.

0.3.3. The cabinet shall be wired for four (4) channels of Opticom™ preemption.

0.3.4. The use of PC boards shall not be allowed except in SDLC panels for TS2 cabinets and detector racks for all cabinets.

0.3.5. The use of plug and play modules shall not be allowed, except for detector rack(s).

0.3.6. All cabinet 120vac wires shall be 18awg or greater, including controller “A” and CMU/MMU “A & B” cables.

0.3.7. The complete cabinet assembly with electronics shall undergo complete input/output function testing by the manufacturer before being released to the State of Montana.

0.3.8. The wired cabinet facility shall use the latest technology applicable, and the cabinet assembly shall be completely manufactured and assembled in the United States of America.

0.3.9. NEMA Type 3R Enclosure

0.3.9.1. The cabinet enclosure shall have nominal dimensions of 56” high x 44” width x 25.5” depth and meet the footprint dimensions as specified in Section 7.3, table 7-1 of NEMA TS2 standards for a Type P cabinet. The cabinet base shall have continuously welded interior mounting reinforcement plates with the same anchor bolt hole pattern as the footprint dimensions.

0.3.9.2. Shall be fabricated from 5052-H32 0.125-inch-thick aluminum and be rated NEMA 3R.

0.3.9.3. The cabinet shall be double flanged where it meets the cabinet door.

0.3.9.4. The top of the cabinet shall be sloped 1” towards the rear to facilitate water runoff and shall bend at a 90° angle at the front of the cabinet. Lesser slope angles are not allowed.

0.3.9.5. The inside of the cabinet shall utilize C channel rails. Two (2) C channels will be welded on the back wall on 34” center and four (4) channels welded on each side wall on 8” center with 4” between sets of channel rails. The C channel rails on the back wall shall be 35” in length and start 4.75” from the bottom of the cabinet interior. The C channel rails on the side walls shall be 48” in length and start 5” from the bottom of the cabinet interior. Adjustable rails are not allowed.

0.3.9.6. The Cabinet shall be supplied with interior natural mill finish and exterior natural mill finish.

0.3.9.7. All external fasteners shall be stainless steel. Pop rivets shall not be allowed on any external surface. The door handle shall be ¾” round stock stainless steel bar. The door handle shall rotate counterclockwise to open the cabinet, so handle does not cause interference with key when opening the door.

0.3.9.8. The exterior of the main door shall have (2) flush mount locking recessed compartments. The upper compartment shall contain the police panel and have a conventional police door lock. The lower compartment shall contain the generator panel with generator bypass switch and receptacle. The generator compartment door shall have an integrated door slide mechanism that allows the door to be closed and locked after the generator cord has been connected to the internal receptacle. The door shall have a Corbin #2 tumbler series lock. The police and generator doors shall be recessed so they are flush with the main door. A closed-cell, neoprene gasket shall be used to seal all areas where these doors contact the cabinet door and be thick enough to provide a watertight seal.

0.3.9.9. Closed-cell, neoprene gaskets shall be bonded to the inside of the cabinet door. The gaskets shall cover all areas where the door contacts the double flanged cabinet housing exterior and be thick enough to provide a watertight seal. A stiffener plate shall be welded across the width of the inside of the main door to prevent flexing. A main door bar stop shall be a two-position, three-point stop that accommodates open-angles at 90, 125, and 150 degrees. A louvered air entrance located at the bottom of the main door shall satisfy NEMA rod entry test requirements for 3R ventilated enclosures. Bearing rollers shall be applied to ends of door latches to discourage metal-on-metal surfaces from rubbing. The lock assembly shall be positioned so handle does not cause interference with key when opening the door.

0.3.9.10. A complete set of keys shall be supplied providing access to the cabinet front door, generator door and police door. The cabinet shall be equipped with a universal lock bracket capable of accepting a Best™ style lock and a Corbin #2 tumbler series lock. The cabinet shall come equipped with a Corbin #2 lock. The stainless-steel door handle will have provisions for padlocking.

0.3.9.11. All exterior seams shall be manufactured with a neatly formed continuously weld construction. The weld for the police and generator doors shall be done on the inside of the cabinet door. All welds shall be free from burrs, cracks, blowholes, or other irregularities.

0.3.9.12. The fan baffle panel seams shall be sealed with RTV sealant or equivalent material on the interior of the cabinet.

0.3.9.13. The cabinet shall be UL listed.

0.3.9.14. The cabinet shall come with lifting ears affixed to the upper exterior of the cabinet. These ears shall utilize only one bolt for easy reorientation.

0.3.9.15. The cabinet shall come with one (1) dual-ply Dustlock™ Media polyester, disposable air filter. The filter performance shall conform to listed UL 900 Class 2 and conform to MERV-8 & ASHRAE Standard 52.2-1999. The filter element shall be secured to the louvered entrance on the main door with a metal filter cover that allows air flow through the filter. The filter and metal cover shall be secured to entrance on main door by two (2) horizontally mounted restraints.

0.3.9.16. The cabinet door shall be mounted with a single continuous stainless-steel piano hinge that runs the length of the door. The hinge shall be attached via stainless steel tamper resistant bolts.

0.3.9.17. Each “P” cabinet shall be furnished with four (4) anchor bolts. Each anchor bolt shall have two (2) washers and one (1) nut. The anchor bolts shall be per manufacturer’s recommendations.

0.3.10. Cabinet Hardware, Wiring / Operation

0.3.10.1. Hardware

0.3.10.1.1. The cabinet shall come with two (2) double beveled shelves 10” deep that are reinforced welded with V channel, fabricated from 5052-H32 0.125-inch-thick aluminum with double flanged edges rolled front to back. Slotted holes shall be inserted every 8” for the purpose of tying off wire bundles on the bottom front of each shelf.

0.3.10.1.2. The shelves shall be populated as follows. The controller shall be placed on the right side of the bottom shelf, while the conflict monitor shall be placed on the left side of the bottom shelf. The detector rack and power supply shall be placed on the top shelf.

0.3.10.1.3. A slide-out computer shelf 16” length by 12” width by 2” depth shall be installed below the bottom shelf underneath the controller. The shelf shall be mounted just left of center so that controller cables will not interfere with the operation of the shelf when equipment is installed. The shelf shall have a hinged cover that opens from the front. The drawer when fully extended shall hold up to 50lbs.

0.3.10.1.4. The load bay shall be mounted on the back wall with 7” of clearance to the bottom of the cabinet.

0.3.10.1.5. The detector panel for all field inputs shall be located on the lower left wall.

0.3.10.1.6. The power panel shall be located on the lower right wall.

0.3.10.1.7. The power strip shall be mounted on the right wall, at the top of the “C” channel.

0.3.10.1.8. The interconnect terminal panel shall be mounted on the left wall, front “C” channels above the detector panel.

0.3.10.1.9. A permanent printed thermo vinyl, engraved or silk-screened label shall be provided for all terminals and sockets. Labels shall be legible and shall not be obstructed by cabinet wiring, panels, or cables. All labels shall conform to the designations on the cabinet wiring prints.

0.3.10.1.10. The cabinet shall be equipped with an electric, finger-safe fan assembly capable of moving a minimum of 100 cubic feet of air per minute. The fan shall be mounted in the top of the cabinet in a manner that prevents rain from entering. The fan shall be thermostatically controlled and shall be manually adjustable to turn on between at least 32F and 150F. The cabinet fan circuit shall be fused at 125% of the capacity of the fan motor.

0.3.10.1.11. The cabinet shall have a 150-watt heater with a variable adjustable thermostat equivalent to Johnson Controls/Penn Temperature Control part number A19BBC-2C. The wiring to the heater itself shall be of XHHW type insulation to withstand the temperature of the heater connections. The heater will be safe to the touch and not require protective covers to prevent burning anything touching it and will be mounted on the door at the bottom of the air filter bracket and cannot interfere with any cabinet wiring or operation.

0.3.10.1.12. The cabinet shall have two (2) strips of LED lighting with at least 6 high power LEDs on each strip that emit a cool white color. The LED strips shall be low profile to limit protrusion from the panel or surface they are mounted to. The power supply for the LED strips shall be mounted on the inside top of the cabinet near the front edge. One LED lighting strip shall be mounted on the inside top of the cabinet near the front edge, near the lighting power supply. The second LED lighting strip shall be attached under the cabinet drawer so that it remains stationary when the drawer is extended. The LED strips shall provide cabinet illumination whenever the cabinet door is open.

0.3.10.1.13. Terminal blocks will be of the barrier type.

0.3.10.1.14. All terminal blocks for field wire connections will have #10 screws and must be accessible by the technician using a standard 6” screwdriver.

0.3.10.1.15. A readily accessible mounting panel shall be furnished in each controller cabinet with adequate provisions for terminating all field circuits. This includes but is not limited to the termination of loop lead-in, pedestrian pushbuttons, signal indications for green, yellow, red, walk, don’t walk, and traffic signal interconnect.

0.3.10.1.16. Terminal blocks for the traffic signal controller, conflict monitor or malfunction management unit, and inductive loop detector interfaces will have #6 screws or larger. All terminal blocks located on the back panel shall be silk screen labeled.

0.3.10.1.17. All controller inputs and outputs shall be wired to terminal blocks located on the front side of the load bay to allow checking voltage inputs to the load switch sockets without dropping the load bay. The inputs and outputs may connect to the terminals from the back of the load bay.

0.3.10.1.18. A bar or rest shall be in place for the load switches and flasher to rest on.

0.3.10.2. Wiring / Operation

0.3.10.2.1. The following items have a specific wire color code that must be followed:

0.3.10.2.2. All wiring harnesses must have a nylon mesh covering for wire protection.

0.3.10.2.3. All wiring shall be marked for easy identification. Permanent labels should be used whenever possible.

0.3.10.2.4. The spare output circuits of pedestrian load switches shall be terminated on field terminals for future use. The pedestrian load switches unused inputs shall not be connected to any controller output, but it shall be possible to make the load switch connection easily from the front of the load bay.

0.3.10.2.5. If a conflict monitor or malfunction management unit channel is unused, all unused inputs shall be brought out to a terminal for future use.

0.3.10.2.6. Loop detection, push button and preemption field wiring shall be terminated on the left side of the controller cabinet. Provide additional access points for cable ties on the left side of the cabinet to help support this wiring. Field wiring for vehicle and pedestrian phases and overlaps shall be terminated on the bottom of the back panel.

0.3.10.2.7. Three (3) copies of the cabinet wiring diagram shall be supplied with each cabinet and stored in the roll out computer shelf.

0.3.10.3. Power Panel

The power panel shall handle all the power distribution and protection for the cabinet and shall be mounted in the bottom right side of the facility. All equipment shall be mounted on a silkscreened aluminum panel and include the following equipment at minimum:

0.3.10.3.1. Circuit breakers for cabinet operation, dependent on TS1 or TS2 configuration.

0.3.10.3.2. Surge Protection Device (SPD) that is UL Std. 1449 listed or recognized and equivalent to Citel model DS72US-120S/G-F-ASSM. It shall provide a modular surge protector for AC line and another for the AC neutral and ground. It shall provide a real time diagnostic indication to show if SPD has failed.

0.3.10.3.3. Radio interference suppressor equivalent to Citel DUC31 that is UL 1283 listed or recognized for noise filtering.

0.3.10.3.4. Johnson Controls/Penn Temperature Control A19BBC-2C thermostat for control of the door-mounted cabinet heater.

0.3.10.3.5. Two (2) 19-position or better solid aluminum, tin plated neutral buss bars with raised slotted & torque style screw heads. No tube bars shall be allowed.

0.3.10.3.6. One (1) 19-position or better solid aluminum, tin plated ground buss bar with raised slotted & torque style screw heads. No tube bars shall be allowed.

0.3.10.3.7. 80 Amp normally open solid-state relay for power to the signal bus. The solid-state relay shall have an LED indication when the relay is energized.

0.3.10.3.8. A clear Plexiglas cover to protect personnel from any exposed AC voltages that aren’t touch safe. It shall cover the top and front of the power panel. Circuit breaker trip handles and neutral and ground bus bars shall be accessible without removing the cover. The cover shall mount on standoffs and be removeable without completely removing mounting screws. The Plexiglas cover, or a separate Plexiglas cover, shall also cover the incoming 120 VAC power terminals.

0.3.10.4. Auxiliary Relay for both TS1 and TS2 cabinets.

0.3.10.4.1. Auxiliary Relay – 24 VDC, 8 pin octal base relay: All pins of this relay shall be terminated on an accessible terminal block located with the field wiring terminal blocks on the lower left side of the cabinet.

0.3.10.4.2. Supply all auxiliary relays as part of the cabinet.

0.3.10.4.3. The cabinet must operate correctly with or without any, or all, of the auxiliary relays previously described. Only those operations directly related to the auxiliary relays should not function if relays are not installed.

0.3.10.5. Police Panel

0.3.10.5.1. The cabinet shall include a police panel accessible from the outside with a police door key with an Auto-Flash switch. The operation of the switch in each position is dependent on TS1 or TS2.

0.3.10.6. Generator Panel

0.3.10.6.1. The generator panel shall be housed inside the generator compartment on the front door. The generator panel shall contain a 30amp NEMA L5-30 twist lock panel mount male receptacle and 50amp break before make rotary switch. It shall switch both 120AC line and neutral. There shall be two red LED indication lights, one for utility power and one for generator power, that illuminate when power is available. The LED’s shall be labeled to indicate which is for utility and generator power. A 14ft, 14AWG generator cord shall be supplied with each cabinet. The cord shall have a standard NEMA 5-15 plug on the generator end and NEMA L5-30 female socket on the cabinet end with the ground and neutral tied together.

0.3.10.7. Auxiliary Test Panel

0.3.10.7.1. The cabinet shall include an auxiliary switch panel mounted to the interior side of the police panel compartment on the main cabinet door. The panel shall be secured to the police panel compartment by (2) screws and shall be hinged at the bottom to allow access to the soldered side of the switches with the use of only a screwdriver. Both sides of the panel shall be silkscreened. Silk-screening on the backside of the switch panel shall be upside down so that when the panel is opened for maintenance the silk-screening will read right side up. All the switches shall be protected by a hinged, see-through Plexiglas cover.

Controller On-Off Power the controller on or off.

Red Rest The on position shall allow the controller to rest in an all-red state for TS1 cabinets only.

Vehicle Call All eight (8) vehicle phase inputs by momentary pushbutton test switches. Each switch shall directly input a vehicle call on its phase in the controller. In TS2, vehicle calls shall be input via special detector inputs in D cable as detailed in section 2.7.1.

Pedestrian call All eight (8) pedestrian phase inputs by momentary pushbutton test switches. Each switch shall directly input a pedestrian call on its phase in the controller.

0.3.10.8. Convenience Outlets

0.3.10.8.1. The cabinet shall be wired with one (1) convenience outlet with a ground fault interrupter (GFI) and one (1) six position power strip outlet without ground fault interrupters. The ground fault outlet (GFI) shall be mounted on the right side of the cabinet on or near the power panel. The power strip outlet shall be mounted on the right side at top of the “C” channel. No outlets shall be mounted on the door. The GFI power shall be fed through the 20-amp auxiliary breaker. The power strip shall be fed through the power panel 40-amp main breaker in TS2 cabinets or 15-amp signal equipment breaker in TS1 cabinets. There shall be a 2-position terminal block on the power panel, between the power strip and the incoming power, for replacement of the power strip if necessary.

0.3.10.9. Interconnect terminal block

0.3.10.9.1. The cabinet shall include a terminal block dedicated for termination of twisted-pair interconnect cable(s). The terminal block shall provide at least 16 screw terminals for connecting eight (8) pairs of interconnect conductors of at least AWG No. 24. The interconnect terminal block shall not be wired to anything and attached to a panel mounted to the C channels. Locate the interconnect terminal block on the left cabinet wall above the detection panel.

0.3.10.10. Cabinet Flash

0.3.10.10.1. Operation of the flash circuit shall cut in the flasher and isolate the controller from signal light circuits. The NEMA flash circuit is a cabinet specification and shall not be controlled by the controller. Cabinet flash shall remove power from the preemption cards. The cabinet flash color, yellow, red or none for each vehicle or overlap channel shall be modifiable. The method of modifying each channel flash color will depend on TS1 or TS2.

0.3.10.10.2. All vehicle and overlap channels shall be wired for cabinet flash. The channels shall flash alternately depending on which flasher circuit is wired to each channel:

Flasher circuit 1: Vehicle phases 1, 2, 5, 6 and Overlaps A, C Flasher circuit 2: Vehicle phases 3, 4, 7, 8 and Overlaps B, D

0.3.10.11. Load Bay

0.3.10.11.1. The design of the panel shall conform to NEMA TS-1 unless modified herein. This panel shall be the termination point for the controller unit (CU) cables, Conflict Monitor Unit (CMU) or Malfunction Management Unit (MMU) A and B cables depending on TS1 or TS2, and field terminal facilities. The terminal and facilities layout shall be arranged in a manner that allows all equipment in the cabinet and all screw terminals to be readily accessible by maintenance personnel.

0.3.10.11.2. The load-bay shall be fully wired and meet the following requirements:

0.3.10.11.2.1. The load-bay shall have the following dimensions: constructed from aluminum with a nominal thickness of 0.125”, a maximum height of 19” and maximum width of 38” including attached wiring bundles.

0.3.10.11.2.2. The entire assembly shall roll down and provide access to all the wiring on the back of the panel. All solder terminals shall be accessible when the load-bay is rolled down. The assembly shall be able to roll down without requiring other components, cables or switches to be removed.

0.3.10.11.2.3. The load-bay shall be designed so that all other cabinet screw terminals are accessible without removing cabinet electronics.

0.3.10.11.2.4. All the controller (CU) and conflict monitor (CMU) or malfunction management unit (MMU) cables shall be routed through the back of the load-bay so that they will not be subject to damage during load-bay roll down.

0.3.10.11.2.5. The top of the load-bay panel shall attach directly to “C” channel.

0.3.10.11.2.6. The load-bay shall be balanced such that it will not roll down when the top of the load bay is detached from the “C” channels, even when fully loaded with load switches, flasher, and flash transfer relays.

0.3.10.11.2.7. The load-bay facility shall be wired for 16 channels. Load switch(s) 1-8 shall be vehicle phases 1-8; load switch(s) 9-12 shall be pedestrian phases 2, 4, 6 & 8; load switches 13-16 shall be overlaps A, B, C & D. Load switches 1-8 & 13-16 shall be routed through flash transfer relays.

0.3.10.11.2.8. Constrain all 120 VAC wiring to one terminal block on the load bay.

0.3.10.11.2.9. Sixteen (16) Load switch sockets spaced on 2” center per NEMA TS2 section 5.3.1.2, figure 5-2.

0.3.10.11.2.10. Six (6) Flash transfer relay sockets.

0.3.10.11.2.11. One (1) Flasher socket.

0.3.10.11.2.12. All load switches and flasher shall be supported by a bracket extending at least ½ the length of the load switch.

0.3.10.11.2.13. Load the yellow and green load switch outputs of vehicle phases 1, 3, 5, 7 and all Overlaps with 2K-ohm, 5% resistance. Each load resistor shall be soldered to the back of the loadswitch socket for access from the back side of the load bay.

0.3.10.11.2.14. The load-bay terminals shall be silkscreened on the front and back of the load bay. Silkscreen shall be numbers and functions on the front side, and numbers only on the back side. The back side shall have labels upside down, so when load bay is rolled down the labels will appear right side up and can be read from the front of the cabinet.

0.3.10.11.2.15. Field wiring terminations shall be per channel across the bottom of the load-bay. Each channel shall have 3 terminations corresponding to the appropriate vehicle phase Green, Yellow, Red. Default wiring for each channel shall be left to right Green, Yellow, Red, and the default channel layout left to right shall be vehicle phases 1-8, pedestrian phases 2, 4, 6 & 8 and overlap channels A, B, C & D following the order of the load switches. Field terminals shall be #10 screw terminal and be rated for 600V.

0.3.10.11.2.16. All cable wires shall be terminated. No tie-off of unused terminals will be allowed.

0.3.10.11.2.17. Shall be 100% manufactured in the United States of America.

0.3.10.11.3. All wiring shall conform to NEMA TS2 section 5.2.5 and table 5-1. Conductors shall conform to military specification MIL-W-16878D, electrical insulated high heat wire, type B. Conductors #14 or larger shall be permitted to be UL type THHN. Main panel wiring shall conform to the following colors and minimum wire sizes:

* The load switch channel inputs and outputs must have unique conductor colors like those proposed if the exact colors are not used.

Controller A, B, C, D cables 22-gauge blue (with the exception of power wires: AC+ black, AC- white & earth ground green. These wires shall be 18awg)

CMU or MMU A & B cables 22-gauge orange (with the exception of power wires: AC+ black, AC- white & earth ground green start delay relay common black, normally open black & normally closed black. These wires shall be 18awg)

0.3.10.11.4. The vehicle field terminal blocks shall have a screw Type No. 10 post capable of accepting no less than 3 No. 12 AWG wires fitted with spade connectors. Four (4) 12-position terminal blocks shall be provided in a single row across the bottom of the main panel. Internal cabinet wiring shall be soldered to the back of the field terminal blocks. Spade lugs from internal cabinet wiring are not allowed on field terminal screws.

0.3.10.11.5. All load switches, flasher, and flash transfer relay sockets shall be marked and mounted with screws. Rivets and clip-mounting is unacceptable.

0.3.10.11.6. Wire size 16 AWG or smaller at solder joints shall be hooked or looped around the eyelet or terminal block post prior to soldering to ensure circuit integrity. All wires shall have lugs or terminal fittings when not soldered. Lap joint/tack on soldering is not acceptable. All soldered connections shall be made with 60/40 solder and non-corrosive, non-conductive flux. All wiring shall be run neatly and shall use mechanical clamps and conductors shall not be spliced between terminations. Cables shall be sleeved in braided nylon mesh and wires shall not be exposed.

0.3.10.11.7. All wires terminated behind the main panel or on the back side of other panels shall be SOLDERED. No pressure or solder-less connectors shall be used.

0.3.10.12. Detection Panel

0.3.10.12.1. The detection panel shall support 32 channels of vehicle detection for TS1 cabinets or 16 channels for TS2 cabinets, 4 channels of emergency vehicle preemption detection, 8 channels of pedestrian detection and 4 pedestrian returns on a single panel. The loop wires connecting to the detector rack shall be 22AWG twisted pairs, color coded with a single color for each channel of a rack slot, with one of the twisted pair wires for each channel having a white tracer and land on the second position terminal of each loop.

0.3.10.12.2. The emergency preempt wires shall be color coded with orange for +24VDC, yellow for preempt inputs and blue for ground.

0.3.10.12.3. The detection panel will be mounted on the left side of the cabinet below the bottom shelf, in front of the load bay. The panel shall also include two (2) 19-position solid aluminum, tin plated bus bars with raised slotted & torque style screws heads: one bus bar for neutral and one bus bar for ground attachments on the left side of the cabinet.

0.3.10.13. Detector Racks

0.3.10.13.1. Detector rack shall have connectors so they can be easily removed from the cabinet. All wiring shall be marked for easy identification. Rack size and configuration will depend on TS1 or TS2 configured cabinets.

0.3.10.13.2. All racks shall have an external shelf mounted 24-volt DC power supply. The power supply must meet NEMA TS-2 specification. Connect all inputs and outputs of the power supply to a separate terminal block for only the rack power supply. Provide a Plexiglass cover for the power supply terminal block to provide protection from the 120 VAC terminals. Supply the rack power supply with the cabinet.

0.3.11. Pluggables

0.3.11.1. Loadswitches

0.3.11.1.1. Switching of signal lights (external to the controller mechanism) shall be accomplished by means of solid-state switching assemblies. Loadswitches shall be discrete component type rated for a maximum load current of 15 amps. The loadswitch shall meet all NEMA requirements as applicable by type.

0.3.11.1.2. Supply sixteen (16) loadswitches with each “P” cabinet.

0.3.11.2. Flasher

0.3.11.2.1. Furnish a solid-state electronic flasher producing between 50 and 60 flashes per minute with equal on and off time intervals meeting all NEMA type 3 requirements and conforming to part 4b-18 of the MUTCD.

0.3.11.2.2. Supply one (1) flasher for each controller cabinet ordered.

0.3.11.3. Flash Transfer Relays

0.3.11.3.1. Supply six (6) heavy duty flash transfer relays with each “P” cabinet.

0.3.11.4. Loop Detectors

0.3.11.4.1. Loop detectors shall be of the rack mount type. All loop detectors shall be either two channel or four channel. The loop detectors shall be a solid-state digital device using external power. The front panel shall contain sensitivity controls, mode selector switch, and an actuation indicator LED.

0.3.11.4.2. The detectors shall have LCD displays and be capable of monitoring the call strength on the detector front panel. These devices must have the capability to perform directional logic and 3rd car queuing for protected/permissive operation.

0.3.11.4.3. The loop detectors shall not use more than 120 mA of current at 24 volts DC for two channel loop detectors, and not more than 220 mA of current at 24 volts DC for four channel loop detectors. Two channel loop detectors require the detector output to utilize socket mounted relays.

0.3.11.4.4. The relays shall be normally energized to provide fail-safe functioning in the event of power failure. Four channel loop detectors may use optically coupled transistors for the detector output. The loop detectors shall meet all NEMA temperature requirements. All electrical connections shall be by means of a 44-pin edge card connector.

0.3.11.4.5. Rack mount loop detectors shall be equivalent to:

Eberle Design Model Oracle 2E or Oracle 2EC Reno A&E model C1XXX Supply four (4) two channel detectors with each “P” cabinet.

0.4. EMERGENCY PREEMPTION SYSTEM

0.4.1.1. An emergency preemption system based on Global Traffic Technologies Opticom system shall be incorporated into the controller cabinet. The system is used to temporarily assign priority to the emergency vehicle upon its demand. Emergency preemption cable (manufacturer recommended or supplied) and auxiliary equipment as recommended by the manufacturer and as required for proper operation of the system with respect to the eight phase controller cabinets shall be included as part of this specification.

0.4.1.2. The system shall use a high intensity pulsating light sent as a coded message from the emitter on the emergency vehicle to the optical detector at the intersection. The detector shall then trigger the discriminator. The discriminator processes the signal then interfaces into the cabinet wiring such that it performs the desired function of the proper traffic control during emergency vehicle passage.

0.4.1.3. Necessary logic and wiring shall be provided to allow the following operation:

0.4.1.3.1. Immediate advance of the controller to the clearance intervals of the phase timing.

0.4.1.3.2. All clearance intervals to be timed as set on the controller.

0.4.1.3.3. After proper clearances the controller shall go directly to the preempted phase skipping over any intervening phases in the normal sequences.

0.4.1.3.4. During preemption all pedestrian indications shall be held in DON’T WALK.

0.4.1.3.5. Following preemption, a minimum vehicle recall shall be placed on all phases.

0.4.1.4. The preemption interface panel shall provide terminations for up to four (4) single channel preemption detectors for the controller cabinets. The preemption detector rack slots shall accommodate preemption card for the four (4) channels of preemption. One detector shall be assigned to correspond to each of the channels available on the discriminators. The four preemption channels shall be wired to call controller unit (CU) preempt inputs 3-6.

0.4.1.5. Do not provide the emergency vehicle preemption devices with the controller cabinet but ensure each cabinet can accommodate the preemption devices described.

0.5. TS1 “P” CABINET CONFIGURATION

In addition to the general “P” cabinet specifications in 2.4 and emergency preemption system specifications in 2.5, meet the following requirements for TS1 specified cabinets.

0.5.1. Eight phase signal controller

The Department currently installs exclusively Siemens M50/M60 signal controllers, which must be accommodated by any TS1 traffic signal cabinets. The controller is configured as TS2 Type 2, so the TS1 cabinet must meet the requirements of the controller A, B, and C connectors according to NEMA Standards Publication No. TS 1-1976 through TS 1-1989.

The 4th connector (D or Special Functions connector) shall have the following pin assignments, to be configured for the Siemens M50/M60 controller:

0.5.2. TS1 Configuration eight phase “P” cabinet construction specifications

0.5.2.1. In addition to the four (4) channels of preemption, the cabinet shall be wired for thirty-two (32) channels of loop detection.

0.5.2.2. The cabinet shall be supplied with two (2) door switches, one which controls the cabinet interior lighting circuit and one for the Conflict Monitor interlock circuitry.

0.5.2.3. Terminal block numbering for TS1 cabinets must conform to the following numbering sequence:

1 to 199 Controller functions 200’s Field outputs to signal indications 500’s Opticom detector terminals 700’s Pedestrian inputs and returns 800’s NEMA vehicle detectors – Second number denotes NEMA phase number 900’s Auxiliary vehicle detectors – Second number denotes aux detector

0.5.2.4. Cabinet Wiring/Operation

In addition to the general cabinet wiring/operations requirements of section 2.4.2.2, meet the following for TS1 configuration.

0.5.2.4.1. Power Panel

Circuit breakers:

0.5.2.4.1.1. (1) Main Circuit Breaker – A 40-amp circuit breaker for eight phase cabinets is required. This circuit breaker will act as the main disconnect for power to the back panel and control equipment. This circuit breaker will supply power to the back panel of the controller cabinet. Incoming power will be routed through this circuit breaker and into all circuit protection equipment prior to being distributed throughout the cabinet. It shall be possible to put the cabinet into flash operation by energizing this circuit breaker.

0.5.2.4.1.2. (2) Traffic Signal Equipment Circuit Breaker – A 15-amp circuit breaker for eight phase cabinets is required. This circuit breaker will supply power to the traffic signal controller, conflict monitor, 24-volt power supply, and the Opticom emergency pre-emption equipment. Incoming power to this circuit breaker shall come after the main circuit breaker and all circuit protection equipment.

0.5.2.4.1.3. (3) Auxiliary Circuit Breaker – A 20-amp circuit breaker for eight phase cabinets is required. This circuit breaker will supply power to the heater, the fan, the LED cabinet lighting, and a ground fault outlet fused at 15 amps. Incoming power to this circuit breaker will be achieved by placing this circuit breaker in parallel to the main circuit breaker. This will allow the auxiliary equipment to remain energized even when the back panel and control equipment are de-energized.

0.5.2.4.2. Auxiliary Relays

Supply the following relays for the TS1 configured “P” cabinets, in addition to the auxiliary relays required by section 2.4.10.4. Relays will be of 8 pin octal base style for 24 VDC relays, and 11 pin for 120 VAC relays. The relays will be for the following operation:

0.5.2.4.2.1. Flash Status – 120 VAC relay shall be used as an input to the controller for telemetry monitoring.

0.5.2.4.2.2. Cabinet Interlock – 24 VDC relay: when the conflict monitor is removed, and the cabinet door is closed this relay shall cause the intersection to be placed in flash.

0.5.2.4.2.3. MUTCD Flash – 24 VDC relay shall monitor the flash output of the controller and put the cabinet into flash.

0.5.2.4.2.4. Supply all auxiliary relays as part of the cabinet.

0.5.2.4.2.5. The cabinet must operate correctly with or without any, or all, of the auxiliary relays previously described. Only those operations directly related to the auxiliary relays should not function.

0.5.2.4.3. Police Panel

0.5.2.4.3.1. The cabinet shall include a police panel accessible from the outside with a police door key with the following switch:

Switch Function

Auto-Flash The Flash position shall place the intersection in Flash, turn the conflict monitor and preemption cards off, and stop time the controller. Upon return from the Flash position to the Auto position, the controller shall begin its mode of operation in the startup routine. Utilize the start delay relays from the conflict monitor to initialize the startup routine of the controller.

0.5.2.4.4. Cabinet Flash – TS1 configured “P” cabinets

0.5.2.4.4.1. Operation of the flash circuit shall cut in the flasher and isolate the controller from signal light circuits and remove power from the preemption cards. The NEMA flash circuit is a cabinet specification and shall not be controlled by the controller. The flash color, yellow or red, for each vehicle or overlap channel shall be modifiable by changing the configuration of program flash jumpers for a Program Terminal for each channel. The program terminal wiring for each channel shall be (viewed from front of load bay):

The program terminal wiring will provide yellow, red or no flash on each channel with these flash jumper connections:

The program flash jumpers shall be AWG No. 14 conductor with banana plug jumper ends for easier flash color modification.

0.5.2.4.5. Load Bay

Include wiring for one 12-channel CMU in addition to the general load bay requirements of 2.4.10.10. All CMU wiring shall be soldered to backside of a screw terminal. The screw terminals shall provide access to all functions of the CMU.

Configuration of pedestrian channels that are monitored shall be accomplished by program jumpers with banana plug ends. The program jumpers will modify how the four pedestrian channel Walks are monitored by the CMU. Provide pedestrian monitor jumpers to monitor pedestrian phases 2, 4, 6, and 8.

0.5.2.4.6. Detector Racks

In addition to the general cabinet detector rack requirements of section 2.4.10.12, meet the following for TS1 configured cabinets.

0.5.2.4.6.1. “P” cabinet shall have a ten (10) position detector rack: eight (8) 4-channel card slots to provide 32 channels of vehicle detection, and two (2) 2-channel emergency vehicle preemption slots for 4 total channels of preemption. Each slot for vehicle detection channels shall be wide enough to accommodate full-width 4-channel vehicle detector cards. The rack shall be capable of using both 2-channel or 4-channel detection cards, and 2-channel or 4-channel preemption cards. The second channel of each vehicle detector rack slot shall call the auxiliary/special detector of the phase associated with its rack slot.

0.5.2.4.6.2. Slots 1 through 8 shall be wired for 4-channel loop detectors. Slot 9 and 10 shall be wired for 2- channel preemption discriminators, though it shall be possible to also use a single 4-channel preemption discriminator.

0.5.2.4.6.3. Slot one shall have the detector outputs wired as follows: channel one shall call NEMA Phase 1, channel two shall call Auxiliary 1, channels three and four shall call NEMA Phase 1.

0.5.2.4.6.4. Remaining slots two through eight shall continue to be wired like slot one: the first channel of each slot calls the NEMA phase corresponding to the slot number, the second channel calls the corresponding Auxiliary phase, and channels three and four should call the NEMA phase.

0.5.2.4.6.5. Rack slots 9 and 10 shall be wired for emergency vehicle pre-empts 3, 4, 5, and 6 in the controller.

0.5.2.5. Conflict Monitor

0.5.2.5.1. The conflict monitor shall be a self-contained solid-state device capable of detecting the presence of conflicting signal indications and the absence of proper voltage at the field connection terminals of the red signals. It shall also be capable of monitoring for the presence of proper operating voltages in the controller and within itself.

0.5.2.5.2. The conflict monitor shall monitor loadswitch fail conditions and yellow timing that is too short.

0.5.2.5.3. The conflict monitor shall have an IP/Ethernet port for configuration, retrieval of logs and monitoring of real time operation.

0.5.2.5.4. The conflict monitor shall allow and be capable of monitoring flashing yellow arrow operation.

0.5.2.5.5. The unit shall be a NEMA Twelve Channel conflict monitor corresponding to an eight-phase controller cabinet. It shall monitor the Green, Yellow, Red and Walk of each phase.

0.5.2.5.6. The front of the monitor unit shall contain the MS connector, AC+ power fuse, power indicator, reset switch, signal conflict and red failure indicators, +24 volts DC #1 and #2 indicators, controller voltage failure indicator, signal status indicators for each channel, universal removable programming card, initial flash time adjustment control, the Ethernet communications port, and LCD display indicating which input on each channel is the conflicting display.

0.5.2.5.7. Each “P” cabinet must be able to connect to and operate a NEMA twelve channel monitor.

0.5.2.5.8. Provide operation of a conflict monitor as specified, but do not include any conflict monitors with each “P” cabinet.

0.6. TS2 “P” CABINET CONFIGURATION

In addition to the general “P” cabinet specifications in 2.4 and emergency preemption system specifications in 2.5, meet the following requirements for TS2 specified cabinets.

0.6.1. Eight phase signal controller

The Department currently installs exclusively Siemens M50/M60 signal controllers, which must be accommodated by any TS2 traffic signal cabinets. The controller is configured as TS2 Type 2, so the TS2 cabinet must provide power to the controller through the 55-pin TS1 A connector. Wire and test the cabinet to the NEMA Standards Publication No. TS 2-2003 Traffic Controller Assemblies with NTCIP Requirements Version 02.06 and amendments contained herein.

Provide a D connector (Special Functions connector) with the following pin assignments to be configured for the Siemens M50/M60 controller. Use the D connector special detector inputs to place vehicle calls from vehicle call test switches on the Auxiliary Test Panel. Terminate D cable pins associated with special detectors 1 – 8 on a terminal block located on right wall of cabinet. Wire the terminal block to the vehicle test switches so that vehicle test switches 1 – 8 place calls on special detectors 1 – 8. Tie off unused conductors in D cable for future use.

PIN

0.6.2. TS2 configuration eight phase “P” cabinet construction specifications

0.6.2.1. In addition to the four (4) channels of preemption, the cabinet shall be wired for sixteen (16) channels of loop detection.

0.6.2.2. The cabinet shall be supplied with a door switch to control the cabinet interior lighting circuit.

0.6.2.3. Terminal block numbering shall conform to the following numbering sequence:

1 to 199 Load bay, controller functions 200 to 248 Red, yellow, or dark flash program terminals 300 to 348 Field terminals to signal indications 581 to 589 Opticom detector terminals 700’s Pedestrian calls and returns 800’s Loop detector inputs

0.6.2.4. Cabinet Wiring/Operation

In addition to the general cabinet wiring/operations requirements of section 2.4.10.2, meet the following for TS2 configuration.

0.6.2.4.1. Synchronous Data Link Control (SDLC)

Provide an SDLC panel with twelve (12) 15-pin socket DB connectors for SDLC cables, mounted to a printed circuit board (PCB). Mount the PCB to a bracket for attaching the SDLC panel to “C” channel in the cabinet. Attach the panel to “C” channel so that all twelve SDLC ports point toward the front of the cabinet.

Locate the SDLC interface panel on the left wall between the cabinet shelves.

All SDLC cables shall be terminated on both ends and securely terminated to the SDLC panel with screw type connection and professionally routed in the cabinet to easily reach the load bay, controller, MMU, and detector racks. Populate all SDLC connectors with all 15 pins.

Provide each TS2 cabinet with the SDLC cabling necessary for the controller, MMU, detection racks Bus Interface Unit (BIU) and two (2) terminal facilities BIUs.

0.6.2.4.2. Power Panel

Circuit breakers:

0.6.2.4.2.1. (1) Main Circuit Breaker – A 40-amp circuit breaker for eight phase cabinets is required. This circuit breaker will act as the main disconnect for power to the back panel and control equipment. This circuit breaker will supply power to the back panel of the controller cabinet. Incoming power will be routed through this circuit breaker and into all circuit protection equipment prior to being distributed throughout the cabinet. It shall be possible to put the cabinet into flash operation by energizing this circuit breaker.

0.6.2.4.2.2. (2) Auxiliary Circuit Breaker – A 20-amp circuit breaker for eight phase cabinets is required. This circuit breaker will supply power to the heater, the fan, the LED cabinet lighting, and a ground fault outlet fused at 15 amps.