Siemens S-40EXIT Instructions for use

INSTRUCTION & MAINTENANCE
S-40EXIT RAILROAD HIGHWAY CROSSING
GATE
NOVEMBER 2008 (REVISED JANUARY 2014)
DOCUMENT NO. 074044-3
VERSION B
Siemens Rail Automation Corporation
9568 Archibald Ave., Suite 100,
Rancho Cucamonga, California 91730
1-800-793-SAFE
Copyright © 2013 Siemens Rail Automation Corporation
All rights reserved

Contents
Introduction, Operation .................................................................................................. 1
Specifications, Standard Features & Options ................................................................ 2
Wiring Diagrams ............................................................................................................ 3
Recommended Battery and Wire Requirements............................................................ 4
Foundations ................................................................................................................... 4
Installation Steps ........................................................................................................5-6
Final Checks .................................................................................................................. 6
Lifting Recommendations............................................................................................... 7
Circuit Controller Adjustment ......................................................................................... 8
Spring Buffer Adjustment ............................................................................................... 9
Counterweight Guidelines............................................................................................ 10
Torque Adjustments ................................................................................................ 10-12
Hand Cranking of Gate Mechanism............................................................................. 12
Maintenance Switch Operation .................................................................................... 13
Maintenance Stop Bar Application............................................................................... 14
General Maintenance, Motor, Maintenance Tools, Relays ......................................... 15
Model S-40 EXIT Gate Type 50, 51 and 52 Replacement Parts.................................. 16
Sidelight Cantilever Assembly and Replacement Parts............................................... 17
S-40EXIT Gate Replacement Parts ........................................................................18-19
Terminal Board Assembly and Replacement Parts...................................................... 20
Relay Panel Assembly & Replacement Parts .............................................................. 21
Gate Arm Supports/Counterweights Replacement Parts ............................................. 22
Hardware Torque Guidelines ....................................................................................... 24
Appendix A, Counterweight Guidelines ....................................................................... 25
I&M 074044-3
Revised: 11-08
Instruction & Maintenance
Railroad Highway Crossing Exit Gate
Model S-40EXIT
Copyright c2003-08 Safetran Systems Corporation, All Rights Reserved

1
INTRODUCTION
Safetran's Model S-40EXIT Railroad Highway Crossing Gate is a "default up" mechanism for use in
four-quadrant gate applications. A typical four-quadrant installation will include two standard S-40
mechanisms and two S-40EXIT mechanisms. The Exit gate is designed to raise the arm in a loss of
power condition clearing the exit portion of the crossing. This differs from the standard gate which
is designed to lower the arm in a loss-of-power condition blocking access to the crossing.
While installation and operation differs, the model S-40 mechanism features of gate snubbing, over-
speed control, and maintenance switch circuits have been incorporated into the model
S-40EXIT.
OPERATION
Installation is counterweight-heavy where the arm will be between 700and 830in a free, or power-
off, position. This necessitates full power-down drive to horizontal (00) and power-up drive to verti-
cal (900), utilizing both power-up and power-down gate control circuits. A brake is used to hold the
arm in both the vertical and horizontal positions.
With standard wiring as shown on page 3, positive and negative battery to terminal locations 4 & 5
is always present and serves to supply power to the motor. An additional positive battery "down
control" serves to energize the control relay (K4). External switching by the user is required which
will lower and hold the gate arm at horizontal when the control is energized and will raise the gate
when de-energized. A test link connection "A" is provided that allows raising the gate arm at the
mechanism.
A second test link connection "B" is provided to:
a.) Protect control circuit by opening before using the maintenance switch
b.) Release brake during installation arm torque measurements
Gate-down control energizes the down-control relay to release the brake and make power-down
drive. At 10the power-down contact #7 opens to de-energize the relay and the motor; and to ener-
gize the brake for hold down. Removing gate-down control drops relay K4 to energize the power-up
circuit. At 900the power up contact #8 opens to de-energize the up relay and the motor; and to
energize the brake.

2
Housing and cover: Permanent mold alloy 356 aluminum castings.
Precision CNC machining of all gear, shaft and motor surfaces.
Gear Train: 240 to 1 Reduction.
Bearings: Maintenance free sealed – both main and gear shaft.
Motor: 12 VDC, 4 pole compound series/permanent magnet.
Brake: Hold up, hold down =165ma @ 12VDC
Operating Voltage: 11 – 16 VDC.
Operating Current: Up = 6 – 15 A @ 12 VDC, Down = 6 – 15 A @ 12 VDC.
Circuit Breaker 7 Amp Auto-reset.
STANDARD FEATURES
Makeup of the S-40EXIT Gate Mechanism – Internal:
• Relay panel assembly complete with down rate resistors and over-speed control.
• Auto-reset circuit breaker motor protection.
• Standard Gate Control Relays.
• Adjustable snap action contact actuating cam for power up and power down (posi-
tions 7 & 8).
• Adjustable contact and cam for flashing light control (position 9).
• Adjustable contact and cam for bell control (position 10).
• Adjustable horizontal snub contact and cam (position 11).
Note: Contact cams are factory set as shown on wiring diagram, page 3.
• Adjustable snub resistors to set up time and down time (.80 ohm max).
• 115 VAC Defroster located under motor end and wired to terminal block position 1
with insulated nuts.
• Mechanism serial number located on motor housing label.
• Maintenance switch assembly with stop bracket – see page 13.
Makeup of the S-40EXIT Gate Mechanism – External:
• Lifting eyebolt.
• Shaft ends with 1”-8 UNC nuts, lock washers and hub keys.
• Mounting bolts and saddles for 5” pipe mounting.
• Mechanism support clamp for 5” pipe mounting.
• 2” x 42” long liquid tight conduit with one straight and one 45 degree connector.
• Mechanism serial number stamped on top outside of cabinet.
OPTIONS
• Additional contact and cam.
• Special contact cam settings.
• Special defroster - 230 VAC, 12 or 24 VDC.
SPECIFICATIONS

3

4
FOUNDATIONS
Prefabricated galvanized steel or poured concrete may be used for the foundation.
When using Safetran’s galvanized steel foundation, part number 035903-500X, be sure bottom of
excavation is flat and level to insure full support to the base plate. Backfill should be compacted, with
height of exposure above ground limited to 4 inches.
Place foundation as dictated by local conditions and clearance requirements, remembering that gate
arm lengths are measured from center of foundation to end of arm.
For field poured concrete foundation, 4 anchor bolts, part number 131702-26X, are required.
RECOMMENDED BATTERY AND WIRE REQUIREMENTS
Sizes of wire used for the motor circuit should be calculated so that there will be not more than
0.1 ohm resistance between the battery and mechanism terminals.
Wire sizes as follows are recommended:
The following battery is recommended with above wire sizes for gates of various lengths:
SteelFoundation
035903-500X
Gate Arm
Length in
Feet
Number of Cells
Lead Nickel
Iron Nickel Cadmium
Up to 24
25 to 42 71111
996
Distance from Battery Terminals to
Mechanism Terminals
Up to 60 feet (120 feet of wire)
From 60 to 120 feet (240 feet of wire)
Size of Soft Drawn Copper Wire to Use
No. 9 AWG
No. 6 AWG
3 1/2"
11 11/16"
11 11/16"
17 "
17 "
11 11/16"
3 1/4"5 7/16"

5
1. Erect mast and base. Erect five inch mast, with junction box base on the track side. Mounting hole for
front and back flashing lights will be on the field side of mast. Place a level on the mast and plumb to
vertical using large shim washers or leveling nuts on the foundation bolts.
2. Mount support clamp on mast. Support clamp 070786-5X mounts on the mast with casting facing 45°
from the field side toward track. The top of casting should be approximately 51” above the top of foun-
dation (page 16, item 5). (Actual height may vary depending on local conditions.)
3. Prepare mechanism. Thread 90° flex conduit coupling into the back of the gate cabinet and insert the 4
square head machine bolts into the slots on the back of cabinet (page 18, items 72 & 76).
4. Clamp mechanism in place. Lift mechanism (see page 7) and set on top of the support clamp. Clamp
to mast with clamps, nuts and washers provided (page 18, items 75, 77, 78 & 79).
5. Install arm supports. Apply a small amount of Safetran No-oxide Grease PN 032401-X on the main
shaft threads. Mount gate arm supports with bolted on hubs over the keys on the main shaft ends.
Install main shaft nuts and washers (page 18, items 36 & 37) but do not fully tighten until after install-
ing the conversion bracket.
6. Install arm coupling or conversion bracket. Bolt to the arm support castings and then fully tighten
the main shaft nuts.
7. Install flexible conduit. Thread coupling into base and install conduit to base and rear of cabinet. See
diagram page 6 (page 18, items 73 & 74).
8. Mount flashing lights, bell and signs. The flashing light units have been factory wired but control
wires from the lights junction box to the junction box base must be field installed. Align the flashing
light units before placing the crossing in service. Bell, when used, is mounted on top of the mast
with the gong facing the roadway. A spare contact is provided on the gate controller to cut off bell when
the gate arm is down (see wiring page 3). Mount the required signs.
9. Connect power to mechanism. See page 4 for recommended battery and wire requirements and
connect per wiring diagram page 3. Seal conduit opening per AREMA Signal Manual Part 2.4.25.
10. Install counterweight stud plates. Ensure the roller spacers are over the studs and in the arm support
slot before mounting clamp bar and locking piece. See page 22, items 8,4,11,12 & 13.
11. Install counterweights and gate arm as follows: If required, the back clamps can be loosened and
the mechanism rotated parallel to the roadway for arm installation.
a. Install counterweights. With the arm supports in “arm up position”, install up to 6 counter
weights (12 short type) at this time. Total number required per tables on pages 10 & 24.
Position the counterweights with the large corner radius to the field or up position and
locate maximum to the field or up position (see diagram page 11).
Short arm installations may require extending counterweights as shown on page 24.
b. Raise counterweights. Raise to horizontal using the maintenance switch per
pages 13 and 14.
INSTALLATION STEPS
(Continuednextpage)
EXITGate
FrontLights
BackLights
EntranceGate
FrontLights
BackLights
EXITGate
TrackSide
EntranceGate
RoadSide
FieldSide

6
FINAL CHECKS
A. Voltage at terminals P & N. Should be no less than 11 or more than 16 volts.
B. Check for possible grounds.
C. Check voltage and current during operation.
Voltage should not drop below 11 volts during gate up or gate down cycle.
Power up current should be 6-15 amps. Power down current should be 6-15 amps.
D. Check clearing and descending times.
Clearing time as set per step 16 of 6-10 seconds.
Descending time as set per step 17 of 10-15 seconds.
Clear position with power removed (arm between 70° and 83°).
E. Check terminal board contacts. Check clearance, square contact and wiping action per page 8.
INSTALLATION STEPS (CONTINUED)
c. Install gate arm. On breakaway pivot type assemblies, install number and type of shear
bolts per arm manufacturers instructions.
d. Raise arm to vertical. Install additional counterweights if required and preset them
maximum to field (vertical torque adjustment).
12.Set horizontal torque and arm height. Set horizontal torque to 100 ± 20 foot-pounds at counterweight
side per instructions on page 10. Note: The default-up requirement of the model S-40EXIT gate requires
counterweight heavy installation. Set arm height by rotating contact cam #7 and operating gate with down
control. Be sure that horizontal buffer (upper position) is clear of segment gear.
See pages 8 and 9.
13. Raise and check vertical position of arm. Set the vertical position by rotating contact cam #8 and
operating gate with up control (see page 8).
14. Adjust buffers. Set both buffers to 1/32 clearance from segment gear per instructions on page 9.
15. Set vertical torque. With arm horizontal, open test terminal "B." The counterweight heavy arm will move
to a near vertical default position. Adjust the counterweights to obtain a default position between 700and
830. See intructions on pages10 and 11.
16. Adjust clearing time. Clearing time varies with length of arm but should be between 6 and 10
seconds. Adjust if needed with up speed resistor R1 (lower position item 54 page 18).
17. Adjust descending time. Total descent time is a sum of the adjustable snubbing circuit (90°-5°) and the
horizontal snub control through contact #11 (5°-0°). Adjust the down speed resistor R2 (upper position item
54 page 18) for 10-15 seconds descent time. If faster descent is desired after adjusting, reduce the
horizontal snub travel as follows.
Horizontal snub. Contact #11 on the terminal board is factory set for approximately 5° full horizontal snub.
This can be reduced to half (2.5°) by rotating the cam if less horizontal snub is desired.

7
LIFTING RECOMMENDATIONS
Weight (as shown)
350 lbs.
Weight (as shown)
700 lbs.
Mechanism only can be
lifted into place using the
lifting eye provided
1. Signal assembly must be without
arm and counterweight.
2. Lift point should be a minimum
of 15" above gate mechanism.
3. Lifting sling can be used around
mast and under the junction box
crossarm for lights as shown.
Recommendations for lifting pre-assembled
signals with gate mechansim.
Description
Adapter Cast
Adapter Fab
Conversion Bracket (cast adapter)
Conversion Bracke (fab adapter)
J. B. Base Assy.
Mast & J. B. Base (5" Alum.)
Mast & J. B. Base (5" Alum.)
Mast & J. B. Base Stud (5" Alum.)
Sidelight Cantilever
Counterweight Std.
Counterweight Short
Counterweight Stud Plate
Arm Supports (1 each)
Arm Supports (1 each)
R.R. Crossing Sign w/mtg. Hardware
#2 Track Sign w/mtg. Hardware
J.B. Crossarm 2 Way w/FLX-12 Heads Complete
S-40EXIT Gate Mechanism
Galvanized Steel Foundation
Part Number
076203-510X
076203-501X
076227-X
076227-22X
041931-X
070519-27AX
070519-40AX
070519-3AX
041442-26X
070755-4
070755-34
070757-26X
070920-LX or
070921-RX
035200-17X or
035236-2X
042003-000616
074008-X
035903-911-1X
Dimensions
14 feet - 0 inches
16 feet - 0 inches
7 feet - 0 inches
15 x 30 x 1/2 inches
15 x 15 x 5/8 inches
Weight
28 lbs.
20 lbs.
75 lbs.
55 lbs.
85 lbs.
140 lbs.
160 lbs.
100 lbs.
38 lbs.
63 lbs.
38 lbs.
15 lbs.
72 lbs.
30 lbs. each
30 lbs. each
40 lbs.
25 lbs.
110 lbs.
350 lbs.
200 lbs.

8
CIRCUIT CONTROLLER ADJUSTMENT
Five spring contacts are provided on a standard mechanism assembly. An additional contact can be
furnishedifrequired.Threecontactsare requiredforgateoperation(position7,8&11)and twocontacts
(position 9 & 10) are factory adjusted and may be used as indicated in the table below.
Contacts are factory set as shown below. The rear or moveable contact rarely requires adjustment
unless being replaced. The contact opening can increase with use and should be checked periodically
and adjusted if required. The openings should not exceed 1/16". Contact adjustment can be made by
adjusting the bend angle of the front or fixed contact with a contact forming tool. Set contact opening
to where there is a light drag on a 1/16" gage. Always check contact operation after adjustment to be
sure there is square contact and a good wiping action when the contact closes. Tension pressure of
closed contact to be between 28 and 48 oz.
Contact tools and gages are available, see page 15 for ordering information.
CAUTION: Repeated or overbending of a contact may cause damage and not allow
proper tension when closed or gap when open
Contact cams are factory set for contact function as shown in the table below, or as specified by
customer. Adjustment may be required at installation. Use the allen wrench provided to loosen the cam
locking screw, then using the allen wrench as a lever, shift the cam positon and retighten the screw.
Term. Board
Position Number
7
8
9
10
11
Wire
Designation
L-M
J-K
R-S
H-I
T-U
Contact Closed at
Gate Arm at:
1 degrees - 90 degrees
0 degrees - 89 degrees
83 degrees - 90 degrees
5 degrees - 90 degrees
0 degrees - 5 degrees
Function of Contact
Power Down Control
Power Up Control
Spare (Suggest Flashing Light Control)
Spare (Bell Control)
Horizontal Snub Control
CHECKCONTACT
TENSIONASSHOWN
FIXED CONTACT BEND
HERETO ADJUST

9
SPRING BUFFER ADJUSTMENT
HORIZONTALPOSITION VERTICAL POSITION
The model S-40EXIT gate mechanism is equipped with adjustable spring buffers to back up the
horizontal and vertical gate arm positioning. They are factory-adjusted for 1/32" clearance between
the buffer and segment gear; however, if the gate arm is repositioned they will require readjustment
as shown below.
Toadjust the vertical buffer: Witharmvertical,removethecap and3/16"cotterpinatthelower buffer.
Turn the nut to obtain 1/32" clearance between buffer and segment gear. Replace cotter pin and cap.
To adjust the horizontal buffer: With arm horizontal, remove the cap and 3/16" cotter pin at the upper
buffer. Turn the nut to obtain 1/32" clearance between buffer and segment gear. Replace cotter pin
and cap.

10
COUNTERWEIGHT GUIDELINES
Counterweight requirements depend on the weight and length of the gate arm, and on the weight and position of
the arm coupling or conversion bracket. The counterweights listed in the tables below are based on new Safetran
arms, conversion bracket and adapter.
--NOTE: If using a gate protection device, refer to counterweight tables Appendix A.
Counterweights can be mounted on a single counterweight support arm for arms up to 22'. Longer arms require
counterweight supports on both sides of the mechanism.
Horizontal torque. Set horizontal torque to 100 ±20 foot-pounds at counterweight side as follows:
1. Close test terminal A (pos. 6) to lower arm to horizontal.
2. Place torque wrench (see page 12) over the ½” hexagon end of the motor shaft (or attach
scale to arm as shown page 11).
3. Holding the torque wrench firmly, release the brake by opening test terminal B (pos. 4).
4. Allow wrench to rotate slowly, then hold steady and read torque. Do not rotate the wrench
against the torque direction as a false high reading will result.
5. Close test terminal B (pos. 4), remove torque wrench and adjust counterweights as needed.
Vertical torque. Set vertical torque to obtain a free position of 70° to 83° as follows:
1. Close test terminal A (pos. 6) to lower arm to horizontal.
2. Open test terminal B (pos. 4) allowing arm to raise to a free balanced condition.
3. Check position of arm per diagram page 11 and adjust counterweights for vertical torque to
obtain an arm position of 70° to 83°.
4. Repeat steps 1, 2 and 3 as required allowing for arm up momentum. Close test terminal B.
Note: The free or “default up” position is based on 70° minimum to clear roadway
and 83° maximum so as to not close contact #9.
TORQUE ADJUSTMENTS
Counterweights
Required
Short Short
070757-30X
Standard
070757-26X
Stud Plate
12 – 14 3 (2+1XT) 6 1 1
15 – 18 4 8 1 1
19 – 22 5 10 1 1
23 – 28 6 12 2 2
29 – 32 7 14 2 2
33 - 36 8 16 2 2
37 - 40 9 18 2 2
41 - 44 10 20 2 2
45 -46 11 22 2 2
Counterweights
mounted on two
Support Arms
Counterweight Requirement Model S-40EXIT
(Standard arms, conversion bracket and adapter)
(+1XT)= One counterweight extended up with support bracket and hardware #070925-4X.
-- See diagram Appendix A

11
TORQUE ADJUSTMENTS
VERTICAL TORQUE
HORIZONTAL TORQUE
- LOOSEN INSIDE NUTS
- ROTATE LOCKING PIECE 900
- SLIDE COUNTERWEIGHTS
- OBTAIN TORQUE
- RETURN LOCKING PIECE
- RETIGHTEN NUTS
700
830
900
00

12
Safetran’s Torque Wrench Kit permits torque measurements to be taken from the ½ inch hexagon
end of the motor shaft providing a simpler method than that of using a spring scale on the arm. The
kit also supplies ratchets for hand cranking the gate mechanism.
The torque wrench is calibrated for both inch-pound and foot-pound readings through the 240 to 1
gear ratio to the ½ inch hexagon end of the motor shaft.
NOTE: Other torque wrenches should not be used.
The Torque Wrench Kit consists of:
· Torque Wrench
· Ratchet Wrench (3/8 inch drive)
· Ratcheting Box End Wrench (1/2 and 9/16 inch openings)
· Socket (½ inch, 3/8 inch drive)
· Hex Key Wrench (3/16 inch)
· Tool Box
· Instruction Sheet
HAND CRANKING OF GATE MECHANISM
Warning: Disconnect power to gate mechanism before inserting tools for hand cranking.
The gate mechanism hand crank feature may be used either to crank the gate up, or in a case
where the arm has been sheared off, to crank the counterweights to the horizontal position. The
tools required are a ratchet wrench with 3/8 inch drive, a ½ inch socket for 3/8 inch drive, and a
ratcheting box end wrench for ½ inch hexagon shaft; all of which are included in the Safetran
Torque Wrench Kit.
1. Place ratcheting box end wrench over the hexagon shaft and slide towards motor. The ratchet
should be set in the direction to prevent its rotation backward ( ON to raise arm, OFF to raise
counterweights).
2. Place the socket ratchet wrench over the end of the hexagon shaft and crank in the desired
direction.
3. At the desired height, align the hole in the lower gear with the hole in the gear frame and insert
a 3/8 inch pin or bolt. The gear train should be locked in this manner whenever working with the
unbalanced condition of removing or replacing an arm or counterweights.
TORQUE WRENCH KIT #070981-X

13
MAINTENANCE SWITCH OPERATION
The Maintenance Switch (patent no. 5,852,350) consists of a push button switch and operating relay as part of
the relay panel located in the upper left area of the gate cabinet, and a stop bar assembly located at the motor
end of the gear train. See diagram below and on next page.
The Maintenance Switch is applicable to fiberglass/aluminum gate arms up to 32’ long. Activating the normally
open, momentary contact, push button switch will raise up to seven full size counterweight plates* to a hori-
zontal position when the gate arm is removed. Once raised the stop bar is used to hold the counterweights at
horizontal until the arm is in place.
OPERATING STEPS
1. Close test terminal A (pos. 6) and open test terminal B (pos. 4)
2. Position the Stop Bar with key-slot over the pivot lug in a ready position (see next page).
3. Depress and hold the Push Button until counterweights are fully raised.
4. Rotate the Stop Bar end against the motor pinion teeth and release the Push Button.
5. Install gate arm.
6. Close test terminal B and replace stop bar.
7. Open test terminal A to raise arm.
* Tests show that six of the full size 58# counterweights in a centered position with 13 VDC at gate
terminals can be raised to a full horizontal position. Five counterweights in a maximum extended
position can be raised to full horizontal with the minimum 11 VDC at gate terminals.
Gates with 7 or more counterweights will require the added use of a come-along or hand cranking
to reach full horizontal position.
MAINTENANCE SWITCH PUSH BUTTON

14
MAINTENANCE STOP BAR APPLICATION
MAINTENANCE HOLD POSITION (DOOR OPEN)
Position Stop Bar with key-slot over pivot lug. When counterweights are fully raised, rotate Stop Bar up
against motor pinion teeth as shown and release the maintenance switch push button.
STORAGEPOSITION
Remove Stop Bar, rotate it and place the key-slot over the lower motor mount bolt head, then rotate up with
the notch under the pivot lug as shown.
HOLE FOR WIRE TIE
KEYSLOT
STOP BAR
PIVOT LUG
Stan-
dard

15
Model S-40EXIT gate mechanisms have self lubricating bearings on the main shaft, gear shafts and on
the auxiliary sidewalk arm shaft when so equipped. No lubrication is required.
Gears should be coated with a thin film of all temperature grease, such as Aeroshell 7, at 3 to 6 month intervals
depending on number of gate operations. Clean thoroughly and reapply grease every two years or when signs of
gear wear are evident.
Ensurethatairvents arekeptunobstructedandflexible conduitbetweenthegatemechanism andthejunctionbox
base is kept sealed. MOTOR
Motor Shaft bearings are sealed with all-temperature grease and no lubrication is required. The brush pressure
shouldbebetween10and16ounces.Normallythebrushpressure,asadjustedatthefactory,willberetainedwithin
proper limits throughout the long life of the brushes.
Required maintenance is to inspect the brushes and commutator annually and following a broken or fouled gate
arm condition that may have held the motor in stall. Clean a darkened commutator by holding a commutator
cleaning stone or non-metallic abrasive cloth to it while rotating the motor shaft. After cleaning, cycle the gate 2-
3 times to clear brushes, then wipe commutator with a lint free cloth. Brushes worn to less than 3/4" length should
be replaced. MAINTENANCE TOOLS
Torque Wrench Kit (contents listed on page 12) - 070981-X
Maintenance Kit Complete-073112-3X (includes following items which can be ordered separately)
- Contact Forming Tool-073112
- Contact Setting Gage-073112-1
- Commutator Cleaning Tool-073112-2
- Contact Cleaning Strips (box of 12)-073000-15
- Tension Gage for Motor Brush Springs and Controller Contacts-073000-16
Torque Card - 070982-2 RELAYS
The relay panel assembly (page 18, item 63) contains the Maintenance Switch Relay K3 (top), the Power Down
Relay K2 (middle) and the Power Up Relay K1 (bottom). Up Control Relay K4 is mounted on the terminal bracket.
Gate-down control energizes the down-control relay to release the brake and make power-down drive. At 10
the power-down contact #7 opens to de-energize the relay and the motor; and to energize the brake for hold
down. Removing gate-down control drops relay K4 to energize the power-up circuit. At 900the power up
contact #8 opens to de-energize the up relay and the motor; and to energize the brake.
Field adjustment of relays is not recommended. Relays failing to pick up at 9.0 volts or release at 2.5 volts require
replacement of the K4 relay or the relay panel assembly.
GENERAL MAINTENANCE
Relay Specifications
Relay Coil Resistance Pick Up Drop Away
12VDC Std 33 Ohm 9.0V max. 2.5V min.
24VDC Std 132 Ohm 18.0 V max. 1.0V nominal

16
MODEL S-40EXIT GATE TYPES 50, 51, AND 52 REPLACEMENT PARTS
Type 50 S-40EXIT Gate
mounted on stub mast Type 50 S-40EXIT Gate with front and/
or back flashing lights and cantilever
mounted sidelights
1 Mast, 5" Stub 070519-3A
2 Mast, 5" Standard 070519-27A
3 Mast, 5", for Front, Back, and 45° Left Lights 070519-43A
4 Base, Junction Box, 11-11/16" Bolt Spacing for 5" Pipe 041931-2X
5 Clamp, Mechanism Support 070786-5X
6 Lamp, Gate Arm 075970-AX
7 Bell, 8-12 VDC Operation, for 5" Mounting 040200-4X
8 Bell, 120 VAC Operation, for 5" Mounting 040200-8X
9 Bell, 12-16 VAC/10-12 VDC Operation, for 5" Mounting 040200-10X
10 Pinnacle, 5" 035045-503X
11 Sign, Railroad Crossing, for 5" Mounting 035200-17X
12 Sign, Track, for 5" Mounting, (specify # of tracks) 035236-(#)X
13 Lamp, Flashing — See flashing lamp section of catalog Specified
14 Mechanism, S-40EXIT Gate 074008-X
15 Cantilever, Sidelight (required for left hand sidelights) 041442-26X
16 Gate Arm & Conversion Bracket — See gate arm section of catalog Specified
Item
No. Description Part Number
To order, specify description and part number.
10 1/8"
8 1/2"
14 1/8"
Type 51 S-40EXIT Gate
with front and/or back
flashing lights

17
SIDELIGHT CANTILEVER ASSEMBLY AND REPLACEMENT PARTS
1
2
3 Casting, Aluminum Clamp 1 070950
4 Pipe, Lower 1 041442-25X
5 Casting, Aluminum Elbow 2 041442-515
6 Pipe, Upper 1 041442-29
7 Pinnacle, 4" – 5" 1 035045-502
8 Set Screw, Square Head, 3/8" – 16 x 1" 1 4932-SC
9 Cap Screw, Hex Head, 1/2" – 13 x 2" 2 4170-HSC
10 Cap Screw, Hex Head, 3/4" – 10 x 6" 2 4286-HSC
11 Cap Screw, Hex Head, 1/2" – 13 x 6" 1 4182-HSC
12 Cap Screw, Hex Head, 1/2" – 13 x 5" 4 4180-HSC
13 Washer, Wrought, 1/2" 7 1755-C
14 Washer, Spring Lock, M, 1/2" 7 1812-MSC
15 Washer, Spring Lock, M, 3/4" 7 1815-MSC
16 Nut, Hex, 1/2 " – 13 7 2108-SC
17 Nut, Hex, 3/4" – 10 2 2114-SC
18 Washer, Flat, 3/4" 4 1737-SC
Part
Number
Qty.
Req'd.
Description
Item
No.
FOR COMPLETE ASSEMBLY, ORDER NUMBER 041442-26X
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18
S-40EXIT Gate
Exploded View