microprocessor based coded track circuit system …...this manual provides detailed...

SERVICE MANUAL· 6196

Installation and Signal Applications

MICROPROCESSOR BASED CODED TRACK CIRCUIT SYSTEM

August, 1982 (Rev. Feb. 1983) WP-1250A, DSKT-0167A B-2/83-250-2482-2

PRINTED IN USA

MICROCODE

UNION SWITCH & SIGNAL DIVISION AMERICAN STANDARD INC./ SWISSVALE, PA 15218

m UNION SWITCH & SIGNAL

REVISION INDEX

Revised pages of this manual are listed below:

Page 'N'o.

i ii 6 13/14 15 16 17 18 19

Rev. Date

2/83 2/83 2/83 2/83 2/83 2/83 2/83 2/B3 2/83

Sectiai

I

II

III

UNION SWITCH & SIGNAL EB

INTRODUCTION 1. 1 GENERAL 1.2 GENERAL DESCRIPTION 1 • 3 COMPONENTS 1. 4 SPECIFICATIONS

CDNTENTS

1. 4.1 Physical/Mechanical 1 • 4. 2 Electrical 1.4.3 Installation Related 1.4.4 Miscellaneous

INSTALLATION 2. 1 GENERAL 2. 2 CARD FILE MOUNTING 2. 3 PCB PREPARATION 2.4 BATTERY AND CHARGER 2.5 WIRING AND smGE PROTECTION

2. 5. 1 Connection to Weidmuller Plugs 2.5.2 Battery 2. 5.3 Track Leads 2. 5. 4 Relay Logic

2.6 POWER-UP AND INITIAL DIAGNOSTICS 2. 7 FINAL SYSTEM VERIFICATION

2. 7. 1 General 2. 7 .2 Verifying Master Side Canmunications

2. 7. 2.1 Synchronizing the Track Circuit 2. 7 .2.2 Relay Logic Indications

2.7.3 Verifying Slave Side Conmunicatlons 2.7.3.1 Synchronizing the Track Circuit 2. 7. 3.2 Relay Logic Indications

2.7.4 Operational Checks on the Track Circuit 2. 7. 4. 1 Signal Level 2.7.4.2 Polarity 2.7.4.3 0.06 Ohm Shunt Detecticn

2. 7. 5 Relay I/0 Cross Checking 2.8 WEIDMULLER PLUG DESIGNATIONS

SIGNAL APPLICATIONS 3.1 DESCRIPTION OF SIGNAL DATA 3. 2 SIGNAL CONTROL OPERATIONS

3. 2.1 End of Siding 3.2.2 3-Aspect Color Light /lutanatic Sigp.al, Take Siding 3.2.3 3-Aspect Color Light Autanatic Signal, No Take Sid. 3.2.4 Electric Switch Lock With Insulated Joints and

3.2.5 3. 2.6 3.2.7 3. 2.8

Overlay Rel ease 3-Aspect Search Light Autanatic Sigp.al Multi-Aspect Color Light Autanatic Control Staggered 3-Aspect Color Light Autanatic Sigp.al Regenerating Cut/Repeater Sectiai 3. 2. 8. 1 Standard Uni ts N451 082-11.JO 1 Through -140 4 3. 2. 8.2 Repeater Unit N451082-1405

-i-

1 1 1 3 3 3 4 4 4

5 5 5 5 6 6 6 6 7 7 9 10 10 11 11 11 11 11 12 12 12 12 12 13/14 13/14

15 15 15 15 16 17

17 17 18 18 18 18 19


3. 3 AITTOMATIC BLOCK SYSTEM, 3-ASPECT CDLOR LIGHT AITTOMATIC SIGNAL 19

APPENDIX A SIGNAL APPLICATIONS DRAWINGS

Figure

1-1

2-1

A-1

A.-2

A-3

A.-4

A-5

A-6

A-7

A-8

A-9

ILLUSTRATIONS

Microcode :Iardware References

Microcode Battery, Track Lead and Relay Logic Wiring

East End of Sidtng - Input and Output Circuits

First Approach/Intennediate Signals

First Approach/Intennediate Sigp.als (.Searchlight)

First Approach/Intennediate Signal (Multi-Aspect Color Light)

Intennediate Sigp.als

Staggered Intermediate .Signal

Electric Lock With Insulated Joint Overlay Release

Miscellaneous Functions

Automatic Block Sigp.als

-ii-

2

8

A1

A2

A3

A4

A5

A6

A7

A8

A9

1.1 GENERAL

SECTION I INTRODUCTION

UNION SWITCH & SIGNAL m

This manual provides detailed installation/cut-in instructions for Microcode, and signaling applications examples. Make certain this is the most recent edition of this manual; appendices will be added on a continuing basis to cover further signaling applications developments. For detailed Microcode hardware description and maintenance procedures, refer to SM-6195.

1.2 GENERAL DESCRIPTION

Microcode is a digital logic, coded track circuit system which provides train detection and bi-directional communications between adjacent wayside signal locations. It is also capable of detecting broken rail and insulated joint breakdown. Microcode is used in the same non-electrified territory where conventional DC coded track circuits can be installed. The system contains a _microprocessor, and various relay-interface and transmit/receive hardware arrang~ments. It produces a bipolar alternating signal on the rails; those codes with equal polarity "weighting" are used to reduce track storage effects. Microcode units are installed at insulated joint locations, either as a bridge between adjoining track circuits or at the end of the last track circuit in the signal territory. Each contains an independent track code and relay logic interface system.for each adjoining track circuit.

All communications sequences between blocks are interfaced with and processed by Microcode units. Each unit is controlled by a programmed microprocessor which determines the code format to be transmitted. Each functions independently of the Microcode processors in adjacent blocks. Inputs to Microcode can be taken directly from wayside signal relay contacts, other signal devices or from the alternate track/relay interface system in the unit. Information is encoded and transmitted at one location, received, decoded and output at the adjacent location. Outputs from Microcode are capable of driving relays and/or signal lamps directly.

Multiple internal and external checks are constantly carried out by the microprocessor to monitor operations and maximize system security. A fault detection would cause all outputs from that unit to change signals to the most restrictive state.

Software and various circuit board arrangements allow Microcode to interface up to ten parallel inputs and outputs (five independent I/O's maximum) per track circuit. I/0 can be transmitted/received in any combination to provide up to 32 codes with external relay multiplexing. Each transmitted code can contain instructions to output all or no information bits. All outputs have equal "integrity" and are delivered in parallel to eliminate potential false information flashes. Transmission time for coding and delivery, with redundant check, is approximately 1.9 seconds (except for the repeater unit, which has a duty cycle of 0.9 seconds). Microcode can be employed on track circuits up to 15,000 ft. length with 4 ohms/1000 ft. or 13,000 ft. with 3 ohms/1000 ft. ballast (0.06 ohm shunt detection).

6196, p. 1

Ei3 UNION SWITCH & SIGNAL

PCB COMPLEMENT

SLOT A. TRACK 1/0 B. C. LOGIC 1/0 D.CPS

SLOT

A. TRACK 1/0 B. LOGIC 1/0 C. LOGIC 1/0 D.CPS

SLOT A. TRACK 1/0 B. C. LOGIC 1/0 D.CPS

SLOT

A. B. C. MINI-DRIVER D.CPS

SLOT

A. TRACK 1/0 B. LOGIC 1/0 C. LOGIC 1/0 D.CPS

SLOT

A. B. MINI-DRIVER C. MINI-DRIVER D.CPS

SLOT

A. TRACK 1/0 B. c. D.

SLOT

E. CPU F. LOGIC 1/0 G. H. TRACK 1/0

SLOT

E.CPU F. LOGIC 1/0 G. LOGIC 1/0 H. TRACK 1/0

SLOT

E. CPU F. MINI-DRIVER G. H.

SLOT

E. CPU F. LOGIC 1/0 G. H. TRACK 1/0

SLOT

E.CPU F. MINI-DRIVER G. MINI-DRIVER H.

SLOT

E. CPU F. LOGIC 1/0 G. LOGIC 1/0 H. TRACK 1/0

SLOT

E.CPU F. G. H. TRACK 1/0

68 WEIDMULLER CONNECTORS

0

N451082-1401


0

N451082-1402


0

N451082-1403 (MASTER FUNCTIONAL) *BACK-UP, NOT USED


0

N451082-1403 (SLAVE FUNCTIONAL) *BACK-UP, NOT USED


0

N451082-1404 (MASTER FUNCTIONAL) * BACK-UP, NOT USED


0

N451082-1404 (SLAVE FUNCTIONAL) *BACK-UP, NOT USED

N451082-1405

Figure 1-1. Microcode Hardware References -

6196, p. 2

UNION SWITCH & SIGNAL m Internal transformer coupling is used between Microcode electronics and the rails to protect circuits from power transients common to the wayside environment. Suitable surge protection devices are also installed outside of Microcode for additional protection.

Microcode operates independently of the supervisory control system and can be used for vital data transmission between signals or ABS systems. Each unit operates on 12 vdc (nominal) power.

1.3 CCMPONENTS

Microcode consists of a card file containing various numbers and arrangements of four different printed circuit boards. Microcode card files are shipped with different complements of PCB's, as required by application. The various PCB arrangements and unit part numbers are shown in Figure 1-1.

Unit N451082-1401 is used at an intermediate-block location and is capable of interfacing up to five independent, parallel inputs and outputs on each adjoining track circuit. Unit N451082-1402 is also used at an intermediate location and is capable of interfacing a maximum of two independent and seven "dependent" I/0' s per track circuit. Unit N451082-1403 is only used at an end-of-territory location and has the same I/0 capability as the -1401 unit, but only on one side. Similarly, unit N451082-1404 has the same I/0 capability on one side as one side of the -1402 unit. Units -1403 and -1404 will be equipped with track and relay interfacing PCB's on either the "Master" (left) or "Slave" (right) side. Unit N451082-1405 is used exclusively as a block-to-block repeater and has no relay I/0 capability. Units -1401, -1402 and -1405 are dual-function since they operate as two independent systems, each dedicated to a separate track circuit.

The CPU PCB is common to all Microcode units and contains the decision-making logic which controls all Microcode operations. The CPS PCB is common to all Microcode units used to interface relay logic and is responsible for powering the relay coils and/or signal lights.

The Logic I/0 PCB is the interface between the relay contact inputs and the CPU PCB and the CPU PCB outputs to relay coils and/or signal lamps. The Track I/0 PCB is the transmit/receive interface between the CPU PCB and the rails. The Mini-Driver PCB is used to support the operation of the Logic I/0 PCB(s) on the single-function units (-1403 and -1404).

1.4 SPECIFICATIONS

1.4.1 Physical/Mechanical

Dimensions:

Access:

Mounting:

L = 23- 3/ 4" , W = 11" , H = 9- 3/ 4"

Removable front and rear covers

Shelf or wall (dual position mtg. brackets)

6196, p. 3


Connections:

Temperature environment:

1.4.2 Electrical

Battery voltage limits:

Battery voltage ripple:

Current draw from battery:

Output ioading:

Loading on any one output:

Track lead resistance:

Input driver loop resistance:

Relay wiring resistance:

1.4.3 Installation Related

Battery lead wire gauge:

Track lead wire gauge:

Relay logic connection wire gauge:

Track lead twist pair turns/ft.:

Torque on Weidmuller screws:

1.4.4 Miscellaneous

Track circuit length:

Relay I/0 per track circuit "side'':

Transmission coding/delivery time:

Printed Circuit Board Part Numbers:

Up to 68 Weidmuller plugs

-40 to +70 C (-40 to + 158 F)

9.8 to 16.2 volts de (12 volts de nominal battery)

0.5 volts, peak-to-peak

6 amps (max.), 1.8 amps typical for dual-function unit

37 watts (total of relays and/or lamps)

18 watts (max.)

0.1 ohm (max.)

50 ohms (max.)

75 ohms (for 800 ohm relay)

119 AWG (max., at unit)



1 (min.)

15 inch-pounds (max.)

13,000 ft.@ 3 ohms/1000 ft. ballast 15,000 ft.@ 4 ohms/1000 ft. ballast 0.06 ohms shunt detection for both

5 (max.) for units N451082-1401, -1403 10 (max.) for units -1402, -1404

1. 9 seconds ( approx. ) , units N 451082-1401 through -1404. 0.9 seconds for unit -1405

CPU - N451204-1201 Logic I/0 - N451204-1301 CPS - N451204-1401 Track I/0 - N451204-1501 Mini-Driver·- N451204-2001


2.1 GENERAL

SECTION II INSTALLATION

Because Microcode supervises vital track circuit functions, proper installation and cut-in is essential to achieving reliable system operation. The procedures in this section must be carried out exactly as described, and only by qualified and properly equipped personnel. The installer should have a thorough understanding of Microcode operation, however a knowledge of microprocessor operation is not required.

This section covers installation procedures common to all Microcode applications. The customer should consult his special system documentation for any-additional, application-dependent instructions.

2.2 CARD FILE MOUNTING

The Microcode card file is designed for shelf of wall mounting. The angle brackets may be attached in the vertical or horizontal position. The three holes in each bracket are on 2-13/16 inch centers and are 5/16 inch in diameter. Placement of the card file should take into account the need to minimize cable length to other equipment, access to PCB's etc.

2.3 PCB PREPARATION

Microcode units are shipped with all required PCB's installed, as specified by application (see Figure 1-1). None of the PCB's, except for the Track I/0 (N451204-1501), require any field adjustments prior to system cut-in. Two jumpers must be placed on the Track I/0 board(s) to tune receiver sensitivity to track circuit length. Table 2-1 lists the jumper settings for various track circuit ranges:

Table 2-1. Track I/0 PCB Receiver Sensitivity Adjustment

Track Circuit Length Jumper fl 1 Jumper fl

Less than 8,000 ft. J1 to A4 J2 to B4

8,000 to 11,000 ft. J1 to A3 J2 to B3

11 ,ooo to 12,500 ft. J1 to A2 J2 to B2

Over 12,500 ft. J1 to A1 J2 to B1

CAUTION

TRACK I/0 PCB RECEIVER ADJUSTMENT JUMPERS MUST BE PROPERLY INSTALLED FOR THE TRACK CIRCUIT LENGTH, OTHERWISE THE MICROCODE MAY BE UNABLE TO DETECT A BROKEN RAIL OR 0.06 OHM SHUNT CONDITION.

2

Make certain on dual-function Microcode units which control track circuits of different lengths, that each Track I/0 PCB is reinstalled on the correct side of the card file after jumpers have been installed.

6196, p. 5

£33 UNION SWITCH & SIGNAL

2.4 BATTERY AND CHARGER

A Microcode unit requires one 12 volt battery for operating power in all applications. Battery specifications are as follows:

Voltage range:

Voltage ripple

9 • 8 to 16. 2 volts de , (12 vdc nominal)

0.5 volts, peak-to-peak

Typical current draw on the battery will be about 1.8 amps (dual-function unit ) • Maximum draw wi 11 be about 6 amps.

The battery charger should be a constant voltage type (due to the wide range of current draw of the unit with varying track and output loading). A recommended model is the US&S CVF Battery Charger, part Number J726263.

2.5 WIRING AND SURGE PROTECTION

2.5.1 Ccnnection to Weidmuller Plugs

The maximum wire gauge which may be used in Weidmuller plugs 1, 2, 34, 35, 67 and 68 (battery and track lead connections) is lf9 AWG. All other plugs (relay logic connections) can take up to lf14 AWG. Wires should have at least 1/2 inch-of insulation removed for reliable electrical contact in the plug (the conductor does not have to be "tinned"). Do not attempt to install two wires in one plug. The upper Weidmuller wire locking screw should be tightened to 15 inch-pounds with a flat blade screw driver and the wire pull-tested. Do not loosen the lower wire locking screw. Canpleted wiring should be bundled with wire ties; the ties may be laced through the clips on the top of the card file for orderliness. See sectioo. 2.9 for table of Weidmuller plug designations.

2. 5.2 Battery

CAUTION

REMOVE THE FUSE FROM THE MICROCODE BEFORE INSTALLING BATTERY WIRING, OTHERWISE EQUIPMENT DAMAGE MAY RESULT.

Wiring between the Microcode unit and its battery should be kept as short as possible and away from other wiring which may be subject to large voltage surges which may induce voltage rippled (noise) into the system. Following are battery wiring specifications:

Wire gauge into Weidmuller plugs (34, 35):

Distance fran unit with /f12 AWG wire:

Distance from unit with ff9 AWG wire:

Loop resistance at 1 eads:

6196, p. 6

ff12 AWG (recommended) lf9 AWG (maximum)

15 ft • (maximum)

30 ft. (maximum)

0. 5 ohms (maximum)

UNION SWITCH & SIGNAL m The battery circuit must be protected with lighting arresters and secondary surge suppressors. US&S recommends use of the USSP-11 secondary surge suppressor (N451552-0503), which is intended to provide both forms of protection.

Battery wiring to Microcode is shown in Figure 2-1.

2.5.3 Track Leads

Wiring between the Microcode and track leads should be kept as short as possible. Following are track lead wiring specifications:

Wire gauge into Weidmuller plugs (1, 2 67, 68):

Loop resistance at leads:

#10 AWG (recommended) fl9 AWG (maximum)

0.1 ohms (maximum)

Length of track lead wiring is only constrained by the 0.1 ohm loop resist~nce limit (maximum from unit to track and back). It is usually necessary to use a heavier gauge wire than #9 AWG to reach the tracks at or under 0.1 ohm. Heavier wire should be terminated at the lightning arresters ahead of the Microcode, and #9 AWG used between the arresters and the Microcode. This is also shown in Figure 2-1.

CAUTION

MICROCODE TRACK LEAD WIRING MUST BE INSTALLED SO AS TO ESTABLISH ALTERNATING POLARITY ON THE RAILS BETWEEN BLOCKS. IF POLARITY IS NOT ALTERNATED, THE SYSTEM WILL BE UNABLE TO DETECT A BROKEN RAIL CONDITION.

2.5.4 Relay Logic

Relay logic wiring specifications are as follows:

Wire gauge into Weidmuller input, input-drive and output plugs (3-33, 36-66):

Distance from unit with #16 AWG wire on input and input-drive lines:

Distance from unit with #16 AWG wire on output lines:

Distance from unit with #14 AWG wire on input and input-drive lines:

Distance from unit with #14 AWG wire on output lines:

#16 AWG (recommended) #14 AWG (maximum)

6,000 ft. (maximum)

9,000 ft. (maximum)

10,000 ft. (maximum)

15,000 ft. (maximum)

6196, p. 7

UNION SWITCH & SIGNAL

+ ' INSULATED JOINT

/ +

#9AWG(MAX) #9AWG(MAX) 1

r----1-0 2

680-+----?t--1~-.

#9AWG (MAX)

570--1-----,

0 3 660

0 4 650

0 5 640

0 6 630

#9AWG (MAX)

'---llll"---t-----~ GAUGE USUALLY GREATER THAN #9

#14 AWG (MAX) ---------+--0 7 620

610

·aoo

#14AWG MAX

WEIDMULLER CONNECTORS: 1, 2, 67, 68 = TRACK LEADS 3 • 22, 47 • 66 = OUTPUTS 23 · 32, 37 · 46 = INPUTS 33 = INPUT DRIVE 1 (+) 36 = INPUT DRIVE 2 ( - ) 34 =BATTERY+ 35 = BATTERY -

8

0 9 010 590

011 580

012 570

013 560

014 550

L

#14 AWG (MAX)

LIGHTNING ARRESTER

015 540--1---------,

0 16 53 u--1-----,

017 520

018 510

019 500

020 490

021 480 #14 AWG (MAX)

022 470

-------+--U 23 460--1--------i

• RECOMMENDED LIGHTNING AND SURGE PROTECTION

UNUSED INPUTS ON 28,37

024 450

025 440

026 430

027 420

28 410

029 400

030 390

031 380

0 32 370--1----

..--+-fl34 35n-------·

#9 AWG (MAX)

+

12 VDC BATTERY

Figure 2-1. Microcode Battery, Track Lead and Relay Logic Wiring

6196, p. 8

Loop resistance at leads on input and input-drive lines:

Loop resistance at leads on output lines:

UNION SWITCH & SIGNAL m 50.0 ohms (maximum)

75.0 ohms (maximum)

The resistance of the wiring and the relay contacts between the driver connections and the inputs from the relay logic should be kept as low as possible. Excessive resistance can cause a loss of signal, in which case the Microcode would interpret the inputs as failed.

All "active" Microcode inputs must be hard-wired to one or the other input drivers, even if they are not used. The card file part number determines which inputs require connection to a driver line. These are listed in Table 2-2:

Table 2-2. Microcode Inputs Requiring Driver Connections

Card File Part No. Active Inputs Card File Part No.

N451082-1401 1A-5A, 1B-5B N451082-1404

N451082-1402 1A-10A, 1B-10B N451082-1404

N451082-1403 (M*) 1A-5A. N451082-1405

N451082-1403 (S*) 1B-5B

M* - Unit with Master (left) side functional only. S* - Unit with Slave (right) side functional only.

(M*)

(S*)

Active Input13

1A-10A

1B-10B

Not Used

All relay front contacts must be wired to input-drive 1 (+) and back contacts to input-drive 2 (-). All unused inputs must be wired to input-drive 2, otherwise extraneous relay-energized outputs will be generated by the receiving Microcode. Note in the Figure 2-1 example that the unused inputs are bus-connected to input-drive 2 (see Appendix A Applications Drawings for additional example~. In certain instances, an input may be cross-connected with an output on the opposite side of the unit. Refer to Section III for further information.

When an input is connected to input-drive 1, the input is considered "high" and the output at the other end of the track circuit is energized (during a communication). An input connected to input-drive 2 results in a deenergized output at the other end of the track circuit.

2.6 POWER-UP AND INITIAL DIAGNOSTICS

Before the fuse is reinstalled in the Microcode, equipment and wiring should be given a final check to insure proper termination, resistance limits etc. This includes the proper polarities for the battery connections (+de in Weidmuller plug 34, -de in plug 35), all active inputs wired to the input drivers, and the correct jumper placement on the Track I/0 PCB(s) per track circuit length.

6196, p. 9


When the fuse is installed, it is possible that the power connection will be momentarily erratic, in which case no LED's will light. The Microcode logic has interpreted the voltage irregularity as excessive noise on the battery lines and caused the unit to shut down. The fuse should be reinstalled several times until a smooth power connection is made (LED's light).

When power is connected, the single LED on the CPU PCB (slot E) should go on, then off, indicating system power is on. At the same time, the CPS PCB transformer core should emit a faint tone.

The Microcode will then conduct a series of internal and external diagnostics before proceeding to routine operation. The progress of these tests is indicated by the CPU LED. The fashion in which this LED lights is determined by the type of unit. On units N451082-1401 and-1403, the CPU LED will light once again (after the power-on light), go off, flash twice and go off, flash three times and go off, and so forth up through e~ght flashes, then off. On the repeater Microcode (N451082-1405), the LED routine stops after the threeflash step. As of August, 1982, the CPU LED diagnostics routine was not standardized for units N451082-1402 and 1404.

If the CPU LED lights steadily during a given cycle, the logic has sensed an apparent fault and stopped the .diagnostics program. To verify the failed step, reinstall the fuse to restart the diagnostics. The Microcode cannot be put into operation until the appparent fault is removed. Refer to section IV of SM-6195 for interpretation of the diagnostics indications and troubleshooting procedures.

2.7 FINAL SYSTEM VERIFICATION

2. 7 • 1 General

NOTE

Microcode units in the adjacent track circuits must be fully connected and pass power-up diagnostics before the subject unit can be verified as operational.

After passing the diagnostics program, the Microcode LED's should show the following patterns:

a. The CPU PCB LED will go off.

b. The Track I/0 PCB(s) LED's will flash as the track circuit(s) become "synchronized" •

c. On the relay-interfacing Microcodes (all units except N451082-1405), the CPS PCB LED will come on and the Logic I/0 PCB(s) LED's will light steadily showing the state of the the various relay logic inputs and outputs.

The logical way to evaluate Microcode operation is to examine each side of the unit as an independent system. A side consists of the Track I/0 and, where applicable, the Logic I/0 or Mini-Driver PCB's on one side of the CPU PCB. The left or slot A side of the unit is termed the "Master" side since only it can initiate a transmission to the Microcode at the other end of the

6196, p. 10

UNION SWITCH & SIGNAL m respective track circuit. The right or slot H side of the unit is termed the "Slave" side since it cannot transmit on its respective track circuit until receipt of a transmission from the neighboring Microcode. Note on units N451082-1403 and -1404 that checks are only concerned with the functional side of the unit. Once track circuits are synchronzied (Microcodes at both ends communicating continuously), the Master/Slave description is no longer relevant.

2.7.2 Verifying Master Side Communications (All Units Except Slave Type N451082-1403 and-1404)

2.7.2.1 Synchronizing the Track Circuit

In the unsynchronized mode, the Master side Track I/0 LED's will flash about once evecy second. Each "flash" consists of a rapid, alternating burst between the LED's. When the track circuit is synchronized, the LED's should show the rapid flash pattern continuously.

The Master side Track I/0 LED's should not take more than five seconds to go into the synchronized pattern after the start of the initial, unsynchronized transmission. If the track circuit fails to synchronize (LED's hold in the slow flash state) and the receiving Microcode is known to be working properly, a fault such as a broken rail or poor ballast probably exists in the track circuit itself. Refer to section 2.7.4.1 for recommended track circuit checking procedures.

2.7.2.2 Relay Logic Indications (Not Applicable to Unit N451082-1405)

When the unit switches from the diagnostic to unsynchronized mode (Track I/0 LED's in slow flash mode), Logic I/0 LED's 6-10 (lower on PCB) should display the state of the local relay logic inputs to the unit. LED's 1-5 should be off. When the track circuit becomes synchronized, LED's 1-5 should display the state of the relay logic inputs to the transmitting Microcode. This indicates proper communication of the relay code through the track circuit.

If no LED's among 1-5 light upon track circuit synchronization, one of two problems may be present. Either none of the inputs to the transmitting Microcode are energized (unlikely), or the track leads to the local Microcode are switched. The leads on Weidmuller plugs 1 and 2 may be switched to see if Logic I/0 LED's 1-5 come on. If this procedure works, track lead connections must be rechecked at all points to insure that polarity is being alternated between blocks. Refer to section 2.7.4.2.

2.7.3 Verifying Slave Side Communications (All Units Except Master Type N451082-1403 and -1404)

2.7.3.1 Synchronizing the Track Circuit

In the unsynchronized mode, the Slave side Track I/0 LED's should be dark. When the Microcode at the other end of the track circuit transmits and the

· local Microcode acknowledges, the Track I/0 LED~s should flash continuously (same manner as the Master Track I/0 LED's after synchronization).

6196, p. 11


If the Track I/0 LED's flash momentarily, go dark for about one second, then flash erratically, the signal from the transmitting Microcode may be too weak to be properly received. The track circuit should be examined for a short or open circuit condition. Refer to section 2.7.4.1 for recommended procedures.

2.7.3.2 Relay Logic Indications (Not Applicable to Unit N451082-1405)

When the unit switches from the diagnostics to the unsychronized mode (Track I/0 LED's off), Logic I/0 PCB LED's 6-10 (lower) should display the state of the local relay logic inputs to the unit. When the track circuit becomes synchronized, Logic I/0 LED's 1-5 (upper) should display the state of the relay inputs to the transmitting Microcode at the other end the track circuit. This indicates proper transmission of the relay code through the track circuit.

If no LED's among 1-5 light upon track circuit sy~chronization, switch track leads on Weidmuller connectors 67 and 68. If this procedure works, track lead wiring must be rechecked at all points to insure that polarity is being alternated between blocks. Refer to section 2.7.4.2.

2.7.4 Checking Microcode Operation On the Track Circuit

2.7.4.1 Signal Level (All Units)

A standard VOM (recommended model: Simpson 260) may be used to check the signal level of Microcode transmissions over the length of the track circuit. The VOM should be set to the low ac volt scale.

When a Microcode unit Master side is transmitting, but the Slave side of the receiving unit fails to acknowledge the transmission, excessive signal degradation is the likely cause. Depending on ballast conditions, a voltage of 0.9 to 1.8 vac should be developed across the rails at the transmitting location. If the voltage declines by more than a factor of 10 (below 0.1 volts, approx.) before reaching the receiving Microcode, substandard ballast is indicated. If the voltage declines only slightly for a distance, then drops off to zero, a broken rail is indicated. (When the track circuit is unsynchronized, notice that the VOM needle jumps slightly toward the high end of the scale and pauses for a moment when returning to zero. This is the initial transmission from the Master side of the transmitting Microcode. When the track circuit is synchronized, the needle will continue to jump towards the high end of the scale, but not pause when returning to zero. )

2.7.4.2 Polarity (All Units Except N451082-1405)

Track circuit polarities can be checked by jumpering both insulated joints at the local block division and observing Logic I/0 LED's 1-5. If the rail polarities are properly alternated, all Logic I/0 LED's (both sides of the card file) should be dark. The Track I/0 LED's should be blinking in some fashion (varies from unit to unit) as the signal from the wrong block is being received. Normal operation should be restored when the jumpers are removed.

2.7.4.3 0.06 Ohm Shunt (All Units Except N451082-1405)

A 0.06 ohm shunt should be placed across the rails to confirm that all local Mircocode outputs go to zero. This is indicated by Logic I/0 LED's 1-5 going dark.

6196, p. 12

UNION SWITCH & SIGNAL m 2. 7. 5 Cross Checking Relay Logic I/0

Once all Microcode units are verified operational, the configuration of the relay inputs at one end of the track circui.t should be checked against the outputs at the other end, i.n both directions. The Logic I/0 LED's 1-5 of the transmitting unit should match exactly the Logic I/0 LED's 6-10 of the receiving unit. The complete PCB and LED cross reference list appears in Table 2-1 of SM-6195.

2. 8 WEIDMULLER PLUG DESIGNATIONS

Table 2-3. Weidmuller Plug Designations

No. Designation No. Designation No. Designation No. Designation - - - -1 Track+ A 18 Output 8A- 35 - Battery 52 Output 3B-2 Track - A 19 Output 9A+ 36 Inp. Drive- 53 Output ·4B+ 3 Output 1A+ 20 Output 9A- 37 Input 1B 54 Output 4B-4 Output 1A- 21 Output 10A+ 38 Input 2B 55 Output 5B+ 5 Output 2A+ 22 Output 10A- 39 Input 3B 56 Output 5B-6 Output 2A- 23 Input 1A 40 Input 4B 57 Output 6B+ 7 Output 3A+ 24 Input 2A 41 Input 5B 58 Output 6B-8 Output 3A- 25 Input 3A 42 Input 6B 59 Output 7B+ 9 Output 4A+ 26 Input 4A 43 Input 7B 60 Output 7B-

10 Output 4A- 27 Input 5A 44 Input 8B 61 Output 8B+ 11 Output 5A+ 28 Input 6A 45 Input 9B 62 Output 8B-12 Output 5A- 29 Input 7A 46 Input 10B 63 Output 9B+ 13 Output 6A+ 30 Input 8A 47 Output 1B+ 64 Output 9B-14 Output 6A- 31 Input 9A 48 Output 1B- 65 Output lOB+ 15 Output 7A+ 32 Input 10A 49 Output 2B+ 66 Output 10B-16 Output 7A- 33 Inp. Drive+ 50 Output 2B- 67 Track - B 17 Output 8A+ 34 + Battery 51 Output 3B+ 68 Track+ B

61 96, p • 13 /1 4

3.1 DESCRIPTION OF SIGNAL DAT A

SECTION III SIG~AL APPLICATIONS


The basic Microcode commmication format consists of five information bits per directicn. Out put bi.ts consist of Info.' s 1, 2, and 3 (si. gnal control information), Info. 4 (split block indication) and Info. 5, which is left as a spare, i.m.less required for a special functi01. Absence of Info.'s 1 and 2 is regarded as a train detection. Info. 1 is used primarily for block detection and to provide the basis for an approach aspect or signal. Info. 2 without Info. 1 is used for traffic inhibiting. Info. 1 with Info. 2 is used to upgrade approach aspects. Info. 3 is used with Info. 's 1 and 2 to provide multi-as ~ct sigrial oontrol.

A 3-as pect st gnal is selected as follows:

Info. 1 = Approach (Y) Info.' s 1 and 2 = Proceed (G)

A.bsence of Info. 1 = Stop ('R)

Multi-aspect signals are selected as follows:

Info .1 = Approach (Y /R ) Info.' s 1 and 3 = Approach Slow (Y/Y) Info.'s 1 and 2 = Approach Medi un (Y/G)

Info.' s 1 ' 2 and 3 = Proceed (G/R) Absence of Info.1 = Stop (R/R)

Other customer required aspects may replace the Y/Y or the Y/G, as required.

Due to the cycle checking routine performed by Microcode, inputs are checked whether or not they are required. Unused inputs are always connected to input-dri w 2 (-). Outputs need not be so connected.

An input connected to input-drive 1 (+) causes a positive output at the receiving Microcode unit.

3.2 SIGNAL CONTROL OPERATIONS

NOTES

1. To mini.mi ze signal cl earing time , intermediate sigrials are normally clear.

2. The OS track ts a conventional DC track circuit.

3. 2.1 End of Sidtng (See Application Drawings A.ppendix A, Figure A-1)

For a move fran West to East, the 4E signal request initiates a code change toward the next interlocking of Info. 2 without Info. 1 when the EASR relay is dropped. This code cascades sequentially through each intermediate signal location, cancelling opposing sigrials until reaching the adjacent interlocking

6196, p. 15

m UNJON SWITCH & SIGNAL

where it inhibits the opposing entering sigial. At the option of the custcmer, a 1 ock-out timer can be inooqx:>rat ed to delay signal 4E f rem cl ea.ring until a time, equal to or greater than the traffic cascade inhibit time, has elapsed. This will prevent both entering signals fran being cl ea.red simultaneously, with subsequent cancellation of both. The minimum. time is calculated by multiplying the number of intermediate Microcode units between interl ockings by 1 • 9 seconds •

Sigial 4E aspect is dependent on Info. 1 (FTR) allowing it to clea.r to a yellow and Info. 2 (EDR) to upgrade to a green. Block occupancy causes both FTR and EDR to be dropped together, giving block-occupied indications. A "Take Siding' could be effected by using Info. 3 input to the approach sigial. Info. 4 output (WBKR) indicates split-block occupancy.

Movement of the train onto the OS track would cancel the signal in the manner normally required by the customer.

For a move from East to Woot, the 411 sigial request initiates a code change of Info 2, without Info 1 to the west end of the interlocking in a manner identical to the eastward move. At the customer's discretion, up to two lockout times can be used to provide signal cl earing delay if the distance between ends of siding ls considerably loos than the distance between sigp.al l.JW and its approach signal in the block.

3.2.2 3-Aspect Color Light Autcmatic Sigp.al, With Take Siding (See Applications Drawings Appendix A, Figure A-1)

NOTE

This model of the Microcode does not contain software directional stick logic, therefore vital relays are required to perform this functtcn.

To continue the operating sequence for sigial 4E, Info. 2 without Info. 1 code causes the FTR to drop and the WDR to either pick or remain energized. Since these changes occur simultaneously, no other fmctions are affected.

The FTR releasing alone causes the "W" signal to go to stop and perpetuates the traffic-inhibit through to the next Microcode unit. Since track "E" is part of the split block to signal 4E, a jumper between terminals 26 and 54 includes tracks "E" and "F" into Info. 4.

When the train accepts signal 4E, moves over the OS track and occupies track "F", the WDR relE0.ses. This approach-lights sigial E to display an aspect conditioned by ETR and EDR, approach-picks the ESR and drops out the split block WB KR relay at the interlocking • ·

When the train occupies track "E", the ETR and EDR rel €0.se simultaneously, setting the E signal to stop and sticking the ESR. When track "F" is vacated, FTR picks to allow Info. 1 to be transmitted in both directions. At sigp.al 4E, it will allow for a following-move request. When track "E" is vacated, the ESR rel €0.ses to upgrade for a following move by allowing Info. 1 and Info. 2 to be transmitted to signal 4E. Had this signal been equipped with a "Take Siding" display, this would have been controlled through Info. 1 and Info. 3 being present.

-6196, p. 16

UNION SWITCH & SIGNAL m 3. 2. 3 3-Aspect Color Ligj:lt Autcmati c Sigp.al, No Take Siding (See Application

Drawings Appendix A, Figure A.-5)

This sigpal fmctions identically to that :iescribed in section 3.2.2., except that there is no provision for a "Take Siding'' signal.

3.2.4 Electric Switch Lock With Insulated Joints and Overlay ~elmse (See Application Drawings Appendix A., Figure A.-7)

In i.ts normal mode, the MiO"ocode unit acts as a regenerating cut section location; all input fu.rictlons are re-transmitted. To enter the siding frcm the main line, lock rel mse is obtained by shunting the series overlay track circuit WLTR, which immediately picks up to free the lock. Entering the mainline from the siding requires opening the lock door to drop the NWLPR. This causes Drive+ Info. 1 inputs (to terminals 23 and 37) to be removed, dropping the DTR and CTR (Info. 1) relays at the respective sigp.als on either side of the lock locaticn. Info. 2 (on terminals· 24 and 38) remains, thus requesting a traffic inhibit (Info. 2 without Info. 1). This, in turn, · cancels all opposing signals on either side of the lock and inhibits interlocking entering sigpals. Facing sigpals, (movement away from the lock locaticn) remain cl ear.

With no train on tracks "C" and "D" and no traffic lined over the lock, EAR and WAR wi.11 pick immediately and initiate the delay timer TER. This time (which is customer optional) is set for the long side inhibit time. Once on the main lire, with points normal, the train may progress in e.ither direction with full rear protection and sigp.als conditioned to the next interlocking. Entering signal-inhibits are removed as the train progresses out of the signal block in which the lock is located, allowing a following move to be requested.

3.2.5 3-Aspect Searchlight Autanatic '3lgnal (See Applications Drawings Appendix A, Figure A.-3)

NOTS

Input and control functions relevant to this section are identical to those described in sec-ticn 3.2.2 (3-A.spect Color Light Autcmatic Signal), except for the addi ti.on of the si gpal repeater relay.

With signal 4E re quested as before, dropping FTR but holding the WDR energized, the traffic-inhibit (Info. 2 without tnfo. 1) is progressively shifted eastwards, but through a slightly modified Info. 2 circuit (terminals 24 and 38). When track "F" is occupied with FTR and WDR down, the sigp.al "E" approach lights and the ESR picks. Signal "W'' ls at stop, with WHDGPR down. 'tlhen the train occupies track "E", sigp.al· E is set to stop when the ETR drops; the EHDGPR drops, sticking the ESB. Vacating track "F" allows Info. 1 to be transmitted to sigp.al 4E, with the ESB up. When track "E" is vacated, the pi eking of the ETR allows the signal E to display a yellow, pi eking the EHDGPR and dropping the ESB which, in turn, allows Info.'s 1 and 2 to be transmitted to signal 4E. Should the signal mechanism fan, the EHDGPR would drop, removing Info. 2 code to sigp.al 4E.

61 96, p. 17


3.2.6 Multi-Aspect Color Light Automatic Central (See Applications Drawings Appendix A, Figure A-4)

Situation 1: Signal E cleared to yellow over red (approach) by receipt of track "E" Info. 1, reflecting back a green (proceed) to signal 4E over track "F". Receipt of Info. 2 upgrades the signal to yellow over green (approach medium) and further receipt of Info. 3, upgrading the signal to a green over red (proceed). Should the EALOR drop with the signal displaying yellow over green, Info. 2 transmission would be removed, causing signal 4E to downgrade in as rect. Signal E would display dark over red. When track "F" is occupied, the WDR and the WHDR are dropped. Signal E is now approach lit and the ESR is picked. When track "E" is occupied, signal E goes to stop. Track "F" vacated allows Info. 1 to be transmitted to signal 4E.

Situation 2: Signal W cleared to yellow over red (approach) by receipt of track "F" Info. 1, reflecting back a yellow over _green (approach medium) to the signal in the rear with Info.'s 1 and 2. Receipt of Info. 3 upgrades· the signal to yellow over yellow (approach slow) , reflecting back a green over red (proceed) with Info.'s 1, 2 and 3. Upgrading the signal to green over red (proceai) does not change the transmission of Info.' s 1, 2 and 3 to the signal in the rear. Operation of the directional stick (WSR) and approach lighting is similar to that for the east bound signal.

3. 2. 7 Staggered 3-Aspect Color Light Automatic Signal (See Applications Drawings Appendix A, Figure A-7)

Signal 4E requested initiates traffic-inhibit via Info. 2 without Info. 1. This picks the EZR to perpetuate the traffic inhibit to the next signal. Due to the possible short blocks with staggered signals, approach-lighting signal· E could use Info. 5. A train en track "E" will have the signal approach-lit, and with WDR down, pick the ESR. With the train on track "D" and off track "E", ESR is held up, transmit ting Info. 1 to the signal in the rear. With the train off track "D" , Info. 2 is transmitted to the rear and Info. 1 is transmitted on "I1' eastward to each signal.

For westward moves, Info. 2 without Info. 1 (EDR) would be received. With traffi o-inhi bit, DTR down would set signal E to stop and drop the EZR. The train occupying track "D" would approach-li~t W signal (at the next locaticn). With the train on track "E" and off track "D", signal E remains red due to the EZR being down. The ESR will pick, but does not create any unusual conditions. The train vacating track "E" allows receipt of ETR (Info. 1) only. A train passing W signal will allow Info. 2 to be received and transmitted eastward by picking EZR.

3.2.8 Regenerating Cut/Repeater Section (See Application Drawings Appendix A, Figure A-8)

3.2.8.1 Standard Units N451082-ll.J01 Through -1404

All inputs and outputs are cross-connected to extend track circuits. All information is decoded and regenerated in both directions. A 1.9 second delay t:ime must be included for the traffic-inhibit delay time.

61 96, p. 18

UNION SWITCH & SIGNAL ffi 3.2.8.2 Repe3.ter Unit "N451082-l!J05

This unit contains only six terminals, including two for each track and two for battery connections. The unit functions only to repeat each code through by treating each portion of the code as a separate entity. Thus, the only delay is for receipt and transmission of the message, which requires a delay time of approximately 0. 9 seconds.

3. 3 AUTOMATIC BLOCK SYSTEM, 3-ASPECT CDLOR LIGHT AUTOMATIC SIGNAL ( See Application Drawings Appendix A, Figure A-9)

Since traffic is uni-directional in this type of system, aspect control is solely by Info.' s 1 and 2 (FTR and WDR). ETR is only required for approach lighting. No directi.onal sticks are required. A Microcode unit is required for the· tracks (and signal) on the each track.

61 96, p. 19


In the event that track "F", for example, is falsely shunted with no train present (either momentarily or for an extended period), and the traffic relay (FR) happens to be set in the correct position for a move in that direction, the FVR will pick to isolate the Microcode. When the CCSR is energized by the completion of the TER timing cycle, the cab connection is removed and the Microcode is connected. If the shunt is no longer present, the FTR will pick and all relays will reset. Had the traffic relay been conditioned the other way (FR reverse), the FVR would not pick and Microcode would remain connected to the rails to respond to removal of the shunt.

A train on track "F" followed by a false shunt on track "E" would initially appear as a legitimate move, with the CCSR picking. However, as soon as the false shunt is removed, the CCSR will drop, reconnecting the cab to the train on track "F".

Due to the 1.9 second response time of Microcode,. the cab is overlapped into the next track circuit for the distance covered in approximately one second at V max; this is to reduce the loss of cab to the on-board equipment down to an acceptable level.

6196, p. 20

SERVICE MANUAL· 6196 Appendix A

Signal Applications Drawings

MICROPROCESSOR BASED CODED TRACK CIRCUIT SYSTEM

August, 1982 (Rev. Feb. 1983) WP-1250A, DSKT-0167A B-2/83-250-2482-2

PRINTED IN USA

MICROCODE

UNION SWITCH & SIGNAL DIVISION AMERICAN STANDARD INC./ SWISSVALE, PA 15218

MT 3T ~4W

FT

R

MICROCODE UNIT

MTB

INFO 1 } TO MTN TRACK

"' INFO 1 WASR

INFO 2 D+

+

.&woR ,-------t{

- .- +

~D-

INF02 WASR EAHR ·.---- D+ D+

© -L-_Q+ D- D-

© D-

@) 0-

® D-


MICROCODE UNIT

FTB FTR& TO {

INFO 1 + --... TRACK ·. FTN

EDA_&

EASfl INFO 1 INFO 2 + -.... D+ D-__,

WAHR EASR INFO 2 ' • D+__t

~ .AS )INF03 WBKR_& D+ --D- REQUIRED INF04 + -+ -

o+

D-

NOTES:

&PN-15081800 OHM) RECOMMENDED RELAY

' 2. DELAY TIMER REQ'D FOR OPPOSING TRAFFIC INHIBIT

3. SEE TABLE 2-3 F~R TERMINAL DESIGNATIONS

igure A.-1. East End of Siding - Input and Ouput Circuits

6196, p. A 1

WEST G WDR FTR SIGNAL ,---+-""-4--------- ,-----... ESR

. R

N12

ESR D+----,,

D----;--'

N12 _&.WSR ESR FTR EDA ETA 812

----,A ::-+A_l_r-4,__I -812-_J ~~___,--

L _J

D+

D+

w TAKE

FT

~SIDING

ET

~

MICROCODE UNIT

FTB

FTN

INFO 1

&woR + INF02

INFO 3 TO SIG W "B"{

VIA RELAY OR DIRECT ----H

ETA INFO 1

INFO 2

D-

INF04

D-

E

ETB

ETN

INFO 1

INF02

D-

D+

D-

+ ... -

FTR D+

+ WSR

y---0-

D+


A 812 n . FTR WDR

~~

WSR D+ '-i 0-

NOTES

ffi PN-1508 (800 OHM) RECOMMENDED RELAY

& PN-150BSR (250 OHM) RELAY

& APPROACH LIGHllNG OPTIONAL

4. SEE TABLE 2-3 FQR TERMINAL DESIGNATIONS

y

R

gure A.- 2. First Approach/Intermediate Sig.,.als

61 96, p. A2

WEST SIGNAL

Gh~Y---: _

~ RY RG

WDR

812

ESR FTR 812

N12

A EDR ~ ~ 812

N12 WHO GPR

N12 +M-A

FT

w SL~

ET

~SL

TO TRACK

E

MICROCODE UNIT

0® ©® ©®

ETR INFO 1 D + ---... ,--------11-f'Y.1"\

ETB

INFO 2

ESR t ----..}-'----~ FTR

D+ WSR

812 ETR WSR

..&.

EDR


EAST SIGNAL

81~ WDR

N1.;:;_2 --~--======:::. ·==-:1-EHD N12 ~GPR

-~+ 0 ___ 12 _: ~-~~ RG RY

----... 1 "---o + WSR , D-

IM-------.. .--o- FTR WHO -----i.._.--;GPRJ:---D +

D _ ---!_SR,--___ I_N_F_0_2--H,..t"\ ETR ...

D + ---..._:r----:. 0----

WHD ESR GPA EDR ETR 812

1.s--4-] -012-~~---

L--o+ • o-

NOTES:

EHD GPR

L1}. PN-1508 (~00 OHM) RECOMMENDED RELAY

& PN-150BSA (250 OHM) RELAY

& APPROAqH LIGHTING OPTIONAL

WSR

4. SEE TABl,E 2-3 FOR TERMINAL DESIGNATIONS

ESR N12

igure A-3. First Approach/Intermediate Sigpals (Searchligµt)

6196, p. A3

WEST & G WDR FTR ESA

E~~2 SIGNAL

A TO { TRACK

,&FTR

- .. +

.&_wDR N12 +

&_WHDR

+ y WHDR WDR FTR ESR

B

N12

ETA

ESR D+

O+ ~ D- ESR

D----,.

D+ EA LOR

D- .... D-

N12 .&_ WSR ESR FTR EDA ETA 812

~· Lr'] B12_jj_,-0-

w

FT ~ ET

~E

MICROCODE 812

UNIT FTB ETB

} TO FTN ETN TRACK

ETA,&

INFO 1 INFO 1 + - -

EDRA

INF02 INF02 + --

EHDR,&

INF03 INF03 + - -

INFO 4

INFO 1 INFO 1 FTR

INF02 INF02

INF03 WHDR

INF04 o+

0-

N12

N12

D+ WSR

~ D+

D-


EAST EHDA G SIGNAL

A

y

WSR ETA EALOR EDA EHDR G

D+

D-

WDR ETA WSR

NOTES:

& PN-1508 (800 OHM) RECOMMENDED RELAY

~ PN-150BSR (250 OHM) RELAY

~ PN-150BL RELAY, TO SUIT SIGNAL LAMP

& APPROACH LIGHTING OPTIONAL

5. SEE TABLE 2-3 FOR TERMINAL DESIGNATIONS

B

ESR.&_ N12

!Figure A-4. · First Approach/Intermediate Signal (Multi-Aspect Color Light:

6196, p. A4

WEST SIGNAL G

y

N12 £ WSR ESR ETR EDR DTR

N12

812

-~~+A l.r-""-r B12_fj~~~

DTR ESR D+

D+ r'

... 0-

D+

w

ET

ETB

ETN

INFO 1

INFO 1

INFO 2

0-

MICROCODE UNIT

0® ©® © @)

OT

E

OTB

DTN

INFO 1

TO TRACK

ETR

... D+

WSR D .-- -D+


WSR EAST

DTR ___ EDR..---------f-J"-t---G-, SIGNAL

y

N12

WSR

4-{ .-----0+

...._--0-

812 ETR WDR DTR WSR ESR .&., N12 ---,_LL-s12 r~.-----,·~

NOTES:

&PN-1508 (800 OHM) RECOMMENDED RELAY


& APPROACH LIGHTING OPTIONAL


:Figure A-5. Intermediate °"S'i gnals :

61 96, p. A5

N12 .,&.EzR WDR DTR B12

~ k-'

j *--'

w --1

TO { TRACK

.&.ETA

- ... +

.,&.woR

- .. +

.&. .,&.E-AER

ET

ETB

ETN

INFO 1

INF02

r - ---1::-f=r-- - -I -J~_L+ INF05

L-------DTR INFO 1

DTR _&. INFO 5 EDR D+---:z__r- --- -

D+- -- -i._r- - - - J-D-- - -~

OT

MICROCODE UNIT

0 © ©

OTB

DTN

INFO 1 + ...... -

EDR.,&.

INF02 +_-

® ® @)

INFO 1 ETR 'tt-------:L ,--D +

"----0-EZR

:H-------, .,----o+

---0-

.&. E-AEA

OR


EAST SIGNAL

B~~R EZR DTR G

y

R

& B12 ETR WDR DTR EZR

-._~r:--B12 -...-~Nl2

NOTES:

& PN-150B (800 OHM) RECOMMENDED RELAY


& APPROACH ,LIGHTING OPTIONAL. IF ETR TOO SHORT, USE INFO 5

(ETR & FTR !=TC.)

4. SEE TABLE ?-3 FOR TERMINAL DESIGNATIONS

Staggered Intermediate Signal

61 96, p. A6

DT

WLT

D

MICROCODE UNIT

CT

D-

812 EAR WAR TEA& N12 ---,__~----,y:r

N12

812 WLTR

812

812

TEA

U5 CIRCUIT

ELECTRIC SWITCH

LOCK SL-6A


'-----------1 CONTR.

NOTES:

[11 PN-150E3 (800 OHM) RECOMMENDED RELAY

& PN-150T ELECTRONIC TIMER RELAY. DELAY TIME TO BE FOR LONGER SIDE. ' 3. OVERLAY RELEASE TRACK TYPE ATT-10

4. SEE TA!3LE 2-3 FOR TERMINAL DESIGNATIONS

Figure A.-7. Electric Lock With Insulate~d Joint Overlay Release

6196, p. A7

INFOS

INFO 1

FT-W

INFO 1

MICROCODE UNIT

FT-E

FTB-E

FTN-E

INFO 2

TO TRACK

INFOS

RE-GENERATING CODE AT CUT SECTION USING STANDARD UNIT o L"J ,r

TO f TRACK

FT-W

FTB-W

FTN-W

MICROCODE REPEATER

UNIT

FT-E

FTB-E

--*:-----11. IJ.f--FT_N_-E_,t-_ / TR~OCK

RE-GENERATING CODE AT CUT SECTION USING REPEATER UNIT


NOTf:lS:


, Miscellaneous Functions Figure A

I .

I 6196, p. A8

WEST SIGNAL G WDR

A FTR ____ __,ETR ,..._...,,·~,..,..n.,..... __ B_1_2

~ ___J ~,J,.,.-.

N12

- .. +

_&. WDR

- .... +

w

FT ~ ET

GT HT

~E

WEST (FT/ET)

FTB

FTN

INFO 1

INF02

MICROCODE UNIT

Q)

© @

ETB

ETN

INFO 1

} ETA&

+-. -4>.

FTR

. ... 0-

NOTES:

&PN-1508 (~00 OHM) RECOMMENDED RELAY

&APPROACH LIGHTING OPTIONAL



igure A-9. Autanatic Block Signals

61 96, p. A9

..

WDR

N ER ETR

IA N FVR N

FR

/K + ...

.&. .& ~ 1 SEC. ATV MAX. ------i-·~--- > 1 SEC. ATV MAX. -1

INPUT AND OUTPUTS AS

REQUIRED

ETR

~

B EVR

FR

+ -&

TER

INPUTS AND OUTPUTS AS

REQUIRED

FTR

G

N

TE&_

N

EDR

FR

4R

FTR


EVR N

+~(:&.

NOTES:

ffi PN-150B (800 OHM) RECOMMENDED RELAY


& PN-150T ELECTRONIC TIMER RELAY. TIMER SETTING FOR 10,000 FT.

TRACK WITH Vmax OF 60 MPH AND MEDIUM SPEED OF 30 MPH WILL

BE 3.8 MINUTES (MINIMUM) FOR TRAIN TO RUN THROUGH BLOCK. TIMER

SETTING SHOULD BE 5 MINUTES.

& PP-151 MAGN~TIC STICK RELAY

& TRANSPOSITlbN AS REQUIRED

& LOOP TO COMPENSATE FOR APPROX. 2 SECOND RESPONSE TIME OF

MICROCODE (I.E., TO ALLOW CAB TURN-ON IN 1 SECOND).


?i"~ure A."'." 1 O. i

'l'ypical Application of Cab Sigpal

6196, p. A10

PHILADELPHIA OFFICE

JACKSONVILLE OFFICE

NEW YORK OFFICE

UNION SWITCH & SIGNAL DIVISION

HEADQUARTERS American Standard Inc. Swissvale, PA 15218

( 412) 273-4000

EASTERN OFFICES WESTERN OFFICES

2 Penn Center Plaza (215) 568-8032 ST. PAUL 402 McColl Bldg. Room 1630 OFFICE 5th & Jackson Philadelphia, PA 19102 St. Paul, MN 55101

P.O. Box 8609 (904) 724-2607 SAN 903 Sneath Lane Jacksonville, FL 32211 FRANCISCO Suite 2300

OFFICE San Bruno, CA 94066 40 W. 40th. St. (212) 840-5438

· Room 1105 840-5439 ST. LOUIS 500 Northwest Plaza New York, NY 10018 OFFICE Suite 820

MONTREAL OFFICE

ATLANTA

CANADIAN OFFICE

1155 Dorchester Blvd.,W.Suite 1003 Mont.,PQ Can.,H3B 2J2

REGIONAL OFFICES

ROANOKE OFFICE

HUNTINGTON OFFICE

CHICAGO OFFICE

OMAHA OFFFICE

St. Ann, MO 63074

(514) 866-3677

(404) 458-5916

(703) 989-8400

(304) 736-2629

(312) 759-3577

(402) 334-1516

MAIL ALL ORDERS TO:

ORDER ENTRY DEPARTMENT UNION SWITCH & SIGNAL DIVISION

AMERICAN ST AND ARD INC. SWISSVALE PA 15218

( 612) 222-7562

(415) 588-6788 Or 6789

(314) 291-7400 ~

microprocessor based coded track circuit system …...this manual provides detailed...

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