AnsaldoSTS | User manual | Model 95 Highway Crossing Gate Mechanism

Highway Crossing

Equipment

Ansaldo STS USA

(Formerly known as Union Switch & Signal)

RSE-5A1

Rev. 3-09

Model 95 Highway Crossing Gate Mechanism

ASTS USA’s Model 95 Highway Gate Crossing

Mechanism is the industry standard for simplicity, reliability, durability, ease of maintenance and value. It is completely reengineered from earlier models, meets or exceeds AREMA and other industry standards, and responds to customer requests for a state-of-the-art mechanism built with both safety and value in mind. The mechanism represents a leap into the use of modern techniques and materials. Its modular design features an uncluttered mechanism with fewer moveable parts. Each unit part can be easily accessed and replaced in the field if necessary, making the Model 95 simpler to service. Models are available for standard highway vehicle crossing locations, sites with pedestrian sidewalks, and ASTS USA’s Four-

Quadrant Gate System (see RSE-5A3).

General Description

Completely redesigned to meet or exceed AREMA and American Association of Highway Officials’ specifications, the Model 95 Gate Mechanism is a compact, easily maintained device. It features a cast aluminum housing and cover and is driven by a highly efficient and durable gear motor. The result is a smaller, lighter unit that is extremely serviceable and stronger than other models. In fact, the Model 95 is

100 pounds (43 kg) lighter than previous mechanisms, yet has a stall torque of 2,000 footpounds (8896 Newtons). Other features of the Model

95 include heavy duty coil springs for vertical and horizontal dampeners; availability with vital or nonvital relay; capability of indefinite motor stall; and higher-strength gears. The Model 95 is designed for ease of installation and ease of maintenance, with convenient access to the gear train.

During development testing of the Model 95, the gear motor prototypes performed to expectations through more than 200,000 operations. At an average of 10 trains a day, that translates to more than 55 years of operation.

The Model 95 Gate mechanism has been adapted for a variety of applications including:

•

Standard highway crossing entrance gate

•

Highway crossing entrance combined with pedestrian (sidewalk) gate

•

Pedestrian sidewalk-only

•

Highway crossing “Four-Quadrant Gate” system with entrance and “Exit” gate mechanisms (see

RSE-5A3)

Advantages

•

Lightweight, compact design

•

Completely re-engineered for increased durability and serviceability

•

Easily removed and installed

•

Fits 4-inch or 5-inch (10.2 cm or 12.7 cm) masts

•

Capable of indefinite motor stall

•

Self-restoring internal circuit breakers

•

Cast aluminum housing Cast aluminum housing

To order, call 1-800-652-7276 e-mail: [email protected]

www.ansaldo-sts.com

RSE-5A1, p. 1

Ansaldo STS USA


RSE-5A1

Rev. 3-09

Model 95 Highway Crossing

Gate Mechanism

Typical

Highway

Crossing

Application

RR

CROSSING

GATE ARM

GATE ARM

ADAPTER

GATE ARM

SUPPORT

Typical

Highway Crossing

Application with Pedestrian

Gate Arm

COUNTER-

WEIGHTS/

STUD PLATE

MODEL 95

GATE MECH.

UNIT

Typical

Sidewalk

(Pedestrian)

Gate Arm

Application

RR

CROSSING

GATE ARM

GATE ARM

ADAPTER

RR GATE ARM

SUPPORT

MODEL 95

GATE MECH.

UNIT

COUNTER-

WEIGHTS/

STUD

PLATE

PEDESTRIAN

GATE ARM

SUPPORT

PEDESTRIAN

GATE ARM

SIDEWALK

GATE ARM

SUPPORT

MODEL 95

GATE MECH.

UNIT

SIDEWALK

(PEDESTRIAN)

GATE ARM

Advantages (cont’d)

•

Available with vital or non-vital relays

•

Highly efficient drive motor and gears

•

Heavy duty horizontal and vertical buffers

•

Built-in thermal and surge protection

•

“Break-away” gate arm adapter

•

Mechanisms with pedestrian and sidewalk crossing arms available

•

Entrance and exit versions for ASTS USA Quad

Gate System

Design Features

Housing and Gate Arm

The Model 95 features a 1-piece cast aluminum housing and light weight removable cover (vertically hinged). A heavy-duty spring steel hasp on the housing latches the cover to the housing and accepts any standard padlock. Mounting may be done on 4”,

5” and 10” (10.2 cm, 12.7 cm and 25.4 cm) masts.

Overall, the Model 95 is smaller and about one-third lighter than similar mechanisms. Standard gate arm assemblies are easily fastened and wired to the Model

95 drive shaft. A universal breakaway adapter on the arm joint includes shear pins and a right angle, fallaway hinge to control separation of the arm if it is hit by a motor vehicle.

Within the housing, the electrical assembly is platemounted so that all of the electrical components can be easily removed and replaced.

RSE-5A1, p. 2


Gate Mechanism

Design Features (cont’d)

Gearing and Drive Motor

The Model 95 includes a 2-stage, high-strength gear reduction mechanism. Heavy duty damper springs on the main drive shaft prevent any gate arm backlash into the gear train. The Model 95 is driven by a compact but powerful permanent magnet gear motor that generates more torque than larger and heavier motors in use. Stall torque is 2000 ft./lbs. (8896 Newtons), a major improvement over the typical 1300 ft./lbs. (5783

Newton) rating of other gate mechanisms. Also, this motor is capable of moving the gate mechanism off balance with the gate arm missing.

If needed, the motor shaft can also be hand cranked via a square shaft extension.

Motor Control Relay (MCR) contacts are used to control the drive motor. The unique snap-action contact design extends contact life, while helping to operate the mechanism more smoothly. The

MCR is de-energized when the gate is clear; therefore none of the circuit controller contacts carry motor current.

The Model 95 incorporates a simplified hold-clear circuit using an electric brake. This device permits the gate to be locked in the upright position. The brake disengages and allows the arm to lower when a train approaches the gate mechanism.

The Model 95 also has built-in self-restoring internal circuit breakers for thermal and voltage protection, which guard the device from damage due to harsh weather conditions, electrical storms and surges. It is also resistant to overload damage from gate arm obstructions.

Ansaldo STS USA


RSE-5A1

Rev. 3-09

Additional Model 95 Applications

The Model 95 Pedestrian Gate Mechanism utilizes the same basic design as the standard highway crossing version, but is equipped with an additional 8 foot (2.4 m) arm for deployment over a pedestrian sidewalk adjacent to the highway. Both the main highway arm and the pedestrian arm deploy at the same time and same speed from the internal mechanism. Versions of this mechanism are available with vital or non-vital relay.

Gate arm support hubs permit right-hand or left-hand placement of the pedestrian arm.

In addition to the complete Highway/Pedestrian assembly, ASTS USA provides several retrofit kits for converting an existing Model 95 crossing mechanism to include the pedestrian arm feature.

The Model 95 Sidewalk Gate mechanism is also based on the standard gate mechanism, but is only equipped with the 8 foot (2.4 m) pedestrian arm for locations where only a pedestrian sidewalk crosses the tracks. Left and right-hand arm versions are available with this assembly.

The Model 95 Exit Gate Mechanism is an integral part of

ASTS USA’s “Four-Quadrant Gate” system. This gate mechanism is mounted on the signals installed on the exit-side of the crossing (the side through which a motor vehicle must pass when leaving the crossing).

Electrical Controls

The Model 95 uses a dependable circuit controller that is easily accessed and designed to minimize contact burning. This allows for on-site operation with the gate arm missing. One adjustable resistor allows convenient setting of the arm descent speed.

Foundation Mounting

Standard pre-cast or poured concrete may be used as a foundation for the Model 95 Gate

Mechanism (per AREMA guidelines). Bolt spacing is a standard 4-bolt pattern spaced 11-11/16” on centers for 5” junction box.

RSE-5A1, p. 3

Ansaldo STS USA


RSE-5A1

Rev. 3-09


Gate Mechanism

Additional Model 95 Applications (cont’d)

It is designed to raise should power to the highwaycrossing warning system fail, thus preventing a motor vehicle being trapped on the crossing by a down gate blocking the crossing location’s exit-side lane. Refer to RSE-5A3 for additional details.

Specifications

Dimensions:

Weight:

Mounting:

23” H x 21”W x 13-3/4”D

(58.4 cm H x 53.3 cm W x

34.9 cm D)

185 lbs (83.9 kg). with cover,

160 lbs. (72.6 kg) without cover

4”, 5” and 10” ” (10.2 cm, 12.7

cm and 25.4 cm) pipe masts

Eyebolt for lifting

12 Vdc or 24 Vdc

15.0 A

Handling:

Motor Voltage:

Motor Current:

Motor Stall Torque:

Hold Clear:

Ckt. Breaker:

2000 ft./lbs. (8896 Newtons)

12 Vdc unit: 150 to 160 mA

24 Vdc unit: 185 mA

12 Vdc unit: 20A

24 Vdc unit: 10A

Ckt. Brkr. Open Time: 100% of load rating for 1 hour

125% of load rating for up to

1 hour

200% of load rating within 1 minute

Specifications (cont’d)

Ckt. Breaker Reset: Within 1 minute to several minutes

Heater: 25W resistive element

Motor Relay:

Voltages: 24V, 120V, 240V

PN-150HD vital plug-in (see

RSE-4E2) or non-vital

Ordering Information

•

Refer to ordering tabulation below and on page 5 to order the following Model 95 items:

‐ Standard highway crossing entrance mechanism

‐ Highway crossing mechanism with pedestrian

(sidewalk) gate arm

‐ Pedestrian (sidewalk) gate mechanism only

•

If replacing a non-ASTS USA gate mechanism with the Model 95, gate arm supports must be ordered.

•

Model 95 Exit Gate Mechanism only available as part of “Quad Gate” system; contact your ASTS

USA Account Executive for details and any other special equipment configurations required.

•

Request Service Manual SM-6495 for highway, pedestrian and sidewalk gate mechanism replacement parts.

•

Refer to RSE-5A2 for various Model 95 Gate

Mechanism installation, upgrade and retrofit assemblies:

Order No.

N46780101

N46780102

N46780105

N46780106

N46780108

N46780201

N46780202

N46780204

N46780206

Model 95 Crossing Gate Mechanisms

Relay

Type

Non-Vital

Motor

12 Vdc

Non-Vital

Non-Vital

Non-Vital

Non-Vital

24 Vdc

12 Vdc

12 Vdc

12 Vdc

Vital

Vital

12 Vdc

24 Vdc

Vital 12 Vdc

Vital 12 Vdc

Note (1): See RSE-5A2 for description.

3-Wire

Control

--

--

--

--

--

--

--

X

--

120 Vac

Heater

--

--

X

X

--

--

--

--

--

Maint.

Switch (1)

--

--

--

X

X

--

--

--

X

RSE-5A1, p. 4


Gate Mechanism

Ordering Information (cont’d)

Order No.

N46780103

N46780104

N46780109

N46780110

N46780111

N46780112

N46780107

N46780205

N46780207

N46780208

N46780209

N46780210

Model 95 Sidewalk Gate Mechanisms

Relay Left or

Type

Non-Vital

Right Hand

R.H.

Non-Vital

Non-Vital

Non-Vital

Non-Vital

Non-Vital

Vital

L.H.

R.H.

L.H.

R.H.

L.H.

--

Vital

Vital

Vital

Vital

R.H.

R.H.

L.H.

R.H.

Vital L.H.


3-Wire

Control

--

--

--

--

--

--

X

X

--

--

--

--

Ansaldo STS USA


RSE-5A1

Rev. 3-09

120 Vac

Heater

--

--

X

X

X

X

--

--

--

--

X

X

Maint.

Switch (1)

--

--

--

--

X

X

--

--

--

--

X

X

Order No.

N46780301

N46780302

N46780304

N46780305

N46780401

N46780402

N46780403

N46780405

Order No.

N46710401

N46710402

N46710406

Model 95 Pedestrian Gate Mechanisms

(Highway and Sidewalk Crossings in same unit)

Relay

Type

120 Vac

Heater

Maint.

Switch (1)

Non-Vital

Non-Vital

Non-Vital

--

X

--

--

--

--

Non-Vital

Vital

Vital

Vital

X

--

X

--

Vital X


Note (2): With upgrade option (see description).

X

X

--

--

--

Model 95 Exit Gate Mechanisms

Relay

Type

Non-Vital

Vital

Non-Vital

Mode

Fail Up

Fail Up

Fail Up

120 Vac

Heater

--

--

X

Notes

--

--

(2)

--

--

--

(2)

--

Timer

--

--

X

RSE-5A1, p. 5

RSE-5A1, p. 6