FAdC Application notes Automatic Block Section

Prepared: Dinesh Thangamariappan sign. Thangamariappan 2020-01-31

Checked: Rajiv Gupta sign. Gupta 2020-02-05

Released: Akhilesh Yadav sign. Yadav 2020-02-05

FAdC Application notes

Automatic Block Section

___

OD100004 Version 1

Classified

Language: EN

Page 1 of 15

FAdC Application notes OD100004-1 EN

Automatic Block Section Classified

© Frauscher Sensor Technology | 2020 2 | 15

© Frauscher Sensor Technology | 2020

Frauscher Sensor Technology India Private Limited

Level 5, Prestige Khoday Tower | No. 5, Raj Bhavan Road | Bengaluru 560001 | INDIA

This document or its content may not be altered, reproduced, disclosed to third parties, or made

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Thank you for your feedback.




Table of contents

Review list....................................................................................................................................... 3

Bibliography .................................................................................................................................... 4

Abbreviation .................................................................................................................................... 4

1 FAdC .................................................................................................................... 5

1.1 General block diagram .................................................................................................... 5

2 Automatic Block .................................................................................................. 6

2.1 Architecture 1 (No intermediate hut) ................................................................................ 6

2.1.1 Architecture ..................................................................................................................... 7

2.2 Architecture 2 (With Intermediate hut) ............................................................................. 8

2.2.1 Architecture ..................................................................................................................... 9

2.3 Interlocking Interface ..................................................................................................... 10

2.3.1 For Relay Interlocking ................................................................................................... 10

2.3.2 For Electronic Interlocking: ............................................................................................ 10

3 Benefits of FAdC ............................................................................................... 11

4 BOQ for ordering ............................................................................................... 12

5 Diagnostics ........................................................................................................ 13

5.1 Frauscher Diagnostics System FDS101 ........................................................................ 13

6 Maintenance ...................................................................................................... 15

6.1 Required tools ............................................................................................................... 15

6.2 Maintenance cycle – Once in 1 Years ........................................................................... 15

Review list

Version Date Prepared by Modified sections Modifications

1 2020-01-31 Dinesh Thangamariappan

All Initial version




Bibliography

[ ] Designation Issue/Version

[1] D210001 System documentation Frauscher Advanced Counter FAdC R2

latest

[2] D1414 Mounting and commissioning of wheel sensor type RSR180

latest

[3] D6336 Brief description of testing plate PB200-TS GS01 for wheel sensor RSR180

latest

Abbreviation

AEB Advanced Evaluation Board

COM Communication board (generic term for the different communication

boards)

COM-AdC Communication board for Advanced Counter

DP Detection Point

DSL Digital Subscriber Line

FAdC Frauscher Advanced Counter

FDS Frauscher Diagnostic System

IO-EXB Input/Output Board

OFC Optical Fibre Cable

PSC Power Supply with Crowbar

TLJB Track Lead Junction Box




1 FAdC

1.1 General block diagram

Function of the FAdC:

In each case at the beginning and at the end of each track section (FMA) is a wheel sensor, which

forms the counting head together with the overvoltage protection board BSI and the evaluation

board AEB. This detects all axles of the rail vehicles which drive on the track as well as their

driving direction by means of 2 electronic sensor systems.

All boards of the FAdC have 2 channels. Furthermore, the system can be designed redundantly.

The axle information of the wheel sensor is transmitted via a four-wire signalling Quad cable to the

AEB, which is connected with other AEB boards via a CAN bus. After evaluation of the axle

information, the AEB generates either a clear or an occupied indication. The clear or occupied

indication can be output for further processing by means of a vital protocol via an Ethernet interface

on the COM. The clear and occupied indication can also be output via voltage-free relay contacts

from an IO-EXB that is connected to an AEB.

Figure 1.1: General block diagram




2 Automatic Block

2.1 Architecture 1 (No intermediate hut)

In this example, automatic block sections without intermediate hut is explained.

TRACK SECTION

1-AC DP1, DP3

2-AC DP2, DP5

3-AC DP4, DP7

4-AC DP6, DP9

5-AC DP8, DP10

11-AC DP11, DP13

12-AC DP12, DP15

13-AC DP14, DP17

14-AC DP16, DP19

15-AC DP18, DP20

SUPERVISORY TRACKS (Virtual)

STS1 DP1, DP5 1AC, 2AC








Figure 2.1: Automatic block architecture




2.1.1 Architecture

The Wheel sensors will be wired to the nearest station. The maximum distance between AEB and

RSR180 will be depending on the quad cable specification. The Figure 2.2 shows the cable

requirements between Indoor & outdoor:

Figure 2.2: Basic block diagram

There will be two independent MSDAC systems, one for UP line and one for DN line. Each

MSDAC will be provided with redundant PSC and COM boards working in hot standby

configuration. The FDS can be placed in any location. The communication between locations can

be made using Dark fiber/quad/E1 channel depending on the availability. The Table 2.1 shows the

communication media requirement.

Media Requirement Distance

Dark fiber 2 cores No limitation

Copper (DSL) 1/2 Quad Upto 8 Km

E1 Channel 2 MBPs channel No limitation

Table 2.1: Communication media

Supervisor track sections can be formed as per railway requirement. It can be formed with/without

additional wheel sensors. The table shown in Figure 2.1 is an example to show supervisor track

sections using same wheel sensors. The interlocking interface and reset are explained in

section 2.3.




2.2 Architecture 2 (With Intermediate hut)

In this example, automatic block sections with one intermediate hut is explained.

TRACK SECTION

1-AC DP1, DP3

2-AC DP2, DP5

3-AC DP4, DP7

4-AC DP6, DP9

5-AC DP8, DP10

11-AC DP11, DP13

12-AC DP12, DP15

13-AC DP14, DP17

14-AC DP16, DP19

15-AC DP18, DP20

SUPERVISORY TRACKS (Virtual)









Figure 2.3: Automatic block architecture




2.2.1 Architecture

The Wheel sensors will be wired to the nearest station. The maximum distance between AEB and

RSR180 will be depending on the quad cable specification. The Figure 2.4 shows the cable

requirements between Indoor & outdoor:

Figure 2.4: Basic block diagram

There will be two independent MSDAC systems, one for UP line and one for DN line. Each

MSDAC will be provided with redundant PSC and COM boards working in hot standby

configuration. The FDS can be placed in any location. The communication between locations can

be made using Dark fiber/quad/E1 channel depending on the availability. The Table 2.1 shows the

communication media requirement.

Media Requirement Distance

Dark fiber 2 cores NIL

Copper (DSL) 1/2 Quad Upto 8 Km

E1 Channel 2 MBPs channel NIL

Table 2.2: Communication media

Supervisor track sections can be formed as per railway requirement. It can be formed with/without

additional wheel sensors. The table shown in Figure 2.3 is an example to show supervisor track

sections using same wheel sensors. The interlocking interface and reset are explained in

section 2.3.




2.3 Interlocking Interface

2.3.1 For Relay Interlocking

DN line:

The track status relay for all tracks delivered in station A. One reset box will be installed in Station

A, respective co-operation box in Station B. The co-operation command from station B will be

transmitted to station A by using additional IO-EXB in data transmission [DT] mode. If the track

status is required at station B, additional IO-EXB boards can be procured and used.

UP line:

The track status relay for all tracks delivered in station B. One reset box will be installed in Station

B, respective co-operation box in Station A. The co-operation command from station A will be

transmitted to station B by using additional IO-EXB in data transmission [DT] mode. If the track

status is required at station A, additional IO-EXB boards can be procured and used.

2.3.2 For Electronic Interlocking:

The track status relay for all tracks for UP line, DN line can be given in either station A or station B

or few in station A and remaining in station B depending on interlocking design. The reset output

from EI must also be available in the same location.

FAdC system provides potential free contacts in IO-EXB boards for ACPR, Reset & PR function.

FAdC system can be interfaced with EI system without relays which can reduce the

failure/maintenance, relay cost & space. EI system compatibility must be ensured before execution

of direct interfaces.

Figure 2.5: FAdC Interfacing with EI without relays




3 Benefits of FAdC

1. Modular structure (scalable, simple to expand).

2. Flexibility: FAdC can deliver track status anywhere and everywhere in the network. No need

for additional Multiplexers to transfer the information.

3. High Availability: Possibility of virtual Supervisor track in a SIL4 level without additional

hardware.

4. Enhanced Safety: The track relay is in indoor, so no possibility of giving a false feed from

location.

5. Add on option: Exchange of additional information (vital & non vital signalling information, Ex:

Signal ECR, Emergency crank handle output, etc.) between locations can be sent between

stations (Ex, Signal ECR, Emergency crank handle output).

6. Easy Diagnostics & Maintenance: The electronic cards are installed in Relay room which

provides easy diagnostics during failure/make maintenance easier.

7. Reduced personnel risk: All electrical adjustments are done at indoor.

8. Easy Installation: Wheel sensor mounting is done without any holes in rail using our patented

rail claw. This leads to faster removal and reinstallation during track maintenance works.

9. There is no need for any signalling or power cable, just a quad cable is required (one quad

per sensor) for FAdC system. This enables faster implementation.

10. Since there are No Electronics at Trackside:

▫ No Earthing required at every Detection Point

▫ No Power cable requirement till DP

▫ No additional protective location case is required

▫ the outdoor components are less impacted by traction interferences and lightning

11. Ethernet Interface with Electronic Interlocking system is possible (using various protocols

COM-FSE, FSFB, WNC etc).

12. Diagnostic system - status of any location can be seen remotely monitored within the network

by using Frauscher Diagnostics System (FDS).

13. If Supervisory Track Sections are required, the in-built supervisory track section functionality

of FAdC will be used to improve the availability of the system. This in-built supervisory Track

Section functionality of the FAdC system does not require any additional hardware.

14. The FAdC components will be supplied in a fully Prewired cubicle, which is fully tested at our

factory to reduce onsite wiring.




4 BOQ for ordering

The example tender requirement of MSDAC for automatic block section is shown below:

Description of MSDAC

Supply of MSDAC (Multi Section Digital Axle Counter) as per RDSO/SPN/176/2013 (Ver 3.0) or

latest amendment for automatic block section of STATION A - STATION B.

It shall be catered for:

▫ 20 DP’s & 10 TS in total

▫ To be installed in 2 locations (Viz., Station A & Station B)

▪ MSDAC shall be provided separately for UP and DN lines.

▪ The MSDAC between locations shall be able to communicate in QUAD/E1/OFC.

▪ Supervisory tracks with same DP as main shall be formed for every 2 track sections and

automatic resetting be provided.

▪ Reset arrangement shall be done independent of existing systems (UFSBI, cable etc.,), the

cooperation shall be sent between stations using MSDAC/independent MUX using QUAD/OFC.

▪ Centralised diagnostics shall be provided.




5 Diagnostics

The following diagnostic options are available for the axle counting system and/or the individual

components:

▪ LED indications on the front panel of the PSC, AEB, COM, IO-EXB

▪ ASD (is connected to the diagnostic interface “Serial Interface” on the front panels of the AEB

and COM)

▪ FDS (diagnostic system)

5.1 Frauscher Diagnostics System FDS101

The FDS is used for global diagnostics, monitoring and preventive maintenance of the Frauscher

axle counting system. The central LOG computer makes the data available for remove access via

a web site or an XML interface.

Figure 5.1: LOG computer of the FDS

For diagnostic purposes the FDS provides the following non-failsafe data:

▪ Track clear indication

▪ Axle counter status (number of axles currently in the track section)

▪ Actual wheel sensor current

▪ Status of track section and counting head include error code

▪ Time of last traversing

▪ Time of last reset

▪ Time of last adjustment process

▪ The FDS is completely maintenance free




Figure 5.2: Overview Frauscher Diagnostic System FDS

Advantages of diagnostics via FDS:

▪ Reduced maintenance effort

▪ Preventive maintenance of the FAdC

▪ Fast and effective troubleshooting




6 Maintenance

6.1 Required tools

For the checks during maintenance, the following tools and measuring equipment are required:

Figure 6.1: Tape measure

Figure 6.2: ASD

Figure 6.3: Voltmeter

Figure 6.4: Testing plate PB200-TS GS01

6.2 Maintenance cycle – Once in 1 Years

Indoor components Outdoor components

AEB RSR180

▪ Measurement of sensor current

▪ Check life signal (RSR180)

▪ Check traversing cycle:

▫ Clear - occupied-clear

▫ Occupied - clear - occupied

▫ Simulation with EB or testing plate PB200 allowed

▪ Visual and mechanical inspection

▫ Correct mounting (torques)

▫ External mechanical damages

▫ Measurement “A”

▪ Track occupancy detection

▫ Traverse with a rail vehicle

▫ Dampen with PB200-TS GS01

Documents

FAdC Application notes Automatic Block Section