government of india ministry of railways maintenance
TRANSCRIPT
End Users: SSEs/JEs & Signal Maintainers
INDIAN RAILWAYS
Centre for Advanced Maintenance Technology
Maharajpur, Gwalior (M.P.) Pin Code – 474 005
Maintenance Handbook on
Block Proving By Axle Counter using
UFSBI
GOVERNMENT OF INDIA
MINISTRY OF RAILWAYS
CAMTECH/S/PROJ/2020-21/SP11/1.0
March 2021
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Maintenance Handbook on
Block Proving By Axle Counter using
UFSBI
CAMTECH/S/PROJ/2020-21/SP11/1.0
March 2021
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Foreword
Railway Signalling has come a long way from Mechanical Signalling, Electro-
Mechanical Signalling to present day Electronics, Communications and
software based Signalling. Block working is an integrated part of Railway
Signalling and this area is also not untouched with regard to modernisation.
Application of Universal Failsafe Block Interface (UFSBI) in Block Working
has improved the safety of operation and eliminated some inherent problems of
conventional system like generally present noise in the transmission system. Its
user friendly and non-cooperative features make its operation smooth for
operating personnel.
As Block Proving by Axle Counter using UFSBI is being installed at a large
number of stations on Indian Railways, CAMTECH has issued this maintenance
handbook for SSEs/JEs and Signal Maintainers to help them in maintaining the
system. The information given in this handbook is compiled in an easy to
understand steps.
I hope that this handbook will be helpful to Signal personnel of Indian Railways
in enhancing their knowledge. I wish them all the success.
CAMTECH Gwalior Jitendra Singh
Principal Executive Director
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Preface
The Universal Fail Safe Block Interface (UFSBI) has applications in Automatic
Signalling, IBS, Gate and slot transfer to reduce the number of copper
conductors. The UFSBI system acts as a failsafe multiplexer for communicating
the commands from one block panel to other in Block Proving by Axle Counter
(BPAC). It has applications in all types of single line and double line block
instruments. Further improvements like provision of Electronic Logic Block
Module (EBLM) for avoiding use of relays in UFSBI cubicle has also been
done.
CAMTECH has prepared this maintenance handbook for SSEs, JEs and Signal
Maintainers maintaining BPAC system using UFSBI in their section. For quick
reference, Maintenance guidelines, Troubleshooting and Pre-commissioning
check lists for systems of RDSO approved manufacturers have been
incorporated in the maintenance handbook.
We are sincerely thankful to Signal Directorate RDSO, M/s Webfil Ltd.,
Kolkata and M/s Deltron Equipment & Systems Pvt. Ltd., Kolkata, who helped
us in preparing this handbook. Since technological upgradation and learning is a
continuous process, you may feel the need for some addition/modification in
this handbook. If so, please give your comments on email address
[email protected] or write to us at Indian Railways Centre for
Advanced Maintenance Technology, In front of Adityaz Hotel, Airport Road,
Near DD Nagar, Maharajpur, Gwalior (M.P.) 474005.
CAMTECH Gwalior Dinesh Kumar Kalame
Date: Director (S&T)
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Table of Contents
Foreword ................................................................................................................................................ iv
Preface ................................................................................................................................................... vi
Table of Contents ................................................................................................................................. viii
Issue of correction slips .......................................................................................................................... x
Disclaimer............................................................................................................................................... xi
Our Objective ........................................................................................................................................ xii
CAMTECH Publications......................................................................................................................... xiii
List of Figures ........................................................................................................................................xiv
List of Tables ......................................................................................................................................... xv
Chapter I ................................................................................................................................................. 1
Universal Fail Safe Block Interface (UFSBI) ......................................................................................... 1
1.1 Introduction ............................................................................................................................... 1
1.2 Block Proving By Axle Counter (BPAC) using UFSBI ............................................................ 2
Chapter II ................................................................................................................................................ 5
Block Proving By Axle Counter using UFSBI –Webfil Make ............................................................... 5
2.1 Introduction ............................................................................................................................... 5
2.2 Sub systems of BPAC with UFSBI............................................................................................ 5
2.3 Salient features .......................................................................................................................... 5
2.4 UFSBI Cubicle ........................................................................................................................... 6
2.5 Cable requirements ................................................................................................................... 9
2.6 Power Supply arrangement..................................................................................................... 10
2.7 Relay Rack & Signalling Relays .......................................................................................... 10
2.8 Description of Modules ............................................................................................................. 17
2.9 Troubleshooting through Alarm display .................................................................................... 27
2.10 Do’s & Don’ts ........................................................................................................................... 32
Annexure I – Details of Quad Cable Connection.............................................................................. 33
Annexure II ....................................................................................................................................... 37
Pre installation check-list for BPAC (As per IRS:S 105/2012 Ver. 0) ............................................. 37
Annexure III ...................................................................................................................................... 38
Pre-commissioning Check List for BPAC (Single Line) (As per IRS:S 105/2012 Ver. 0) .............. 38
Annexure IV...................................................................................................................................... 40
ix
Pre-commissioning Check List for BPAC (Double Line) (As per IRS:S 105/2012 Ver. 0) ............. 40
Chapter III ............................................................................................................................................. 42
Block Proving By Axle Counter using UFSBI -Deltron ....................................................................... 42
3.1 Introduction ............................................................................................................................. 42
3.2 Subsystems of Deltron UFSBI ................................................................................................ 42
3.3 UFSBI Address Configuration Jumpers ..................................................................................... 53
3.4 Relay Rack & Signalling Relays ............................................................................................. 54
3.5 Block Proving with Axle counter –Single Line Block Panel ................................................... 58
3.6 Block Proving with Axle counter –Double Line Block Panel ............................................. 59
3.7 Installation pre-requisites of UFSBI ........................................................................................ 61
3.8 Improvements in UFSBI ............................................................................................................ 62
3.9 Maintenance .............................................................................................................................. 63
3.10 Do’s & Don’ts ........................................................................................................................... 65
3.11 Error code list & recommended actions ............................................................................... 66
Annexure V ....................................................................................................................................... 81
Pre-commissioning Check List for Deltron BPAC using UFSBI & SSDAC ................................... 81
References ............................................................................................................................................ 88
x
Issue of correction slips
The correction slips to be issued in future for this report will be numbered as follows:
CAMTECH/S/PROJ/2020-21/SP11/1.0# XX date .......
Where “XX” is the serial number of the concerned correction slip (starting from 01
onwards).
CORRECTION SLIPS ISSUED
Sr. No. of
Correction
Slip
Date of issue Page no. and Item
No. modified
Remarks
xi
Disclaimer
It is clarified that the information given in this handbook does not
supersede any existing provisions laid down in the Signal
Engineering Manual, Railway Board and RDSO publications. This
document is not statuary and instructions given are for the purpose
of guidance only. If at any point contradiction is observed, then
Signal Engineering Manual, Telecom Engineering Manual Railway
Board/RDSO guidelines may be referred or prevalent Zonal
Railways instructions may be followed.
xii
Our Objective
To upgrade Maintenance Technologies and Methodologies and achieve
improvement in Productivity and Performance of all Railway assets and
manpower which inter-alia would cover Reliability, Availability and
Utilisation.
If you have any suggestion & any specific comments, please write to us:
Contact person : Director (Signal & Telecommunication)
Postal Address : Centre for Advanced Maintenance Technology,
Maharajpur, Gwalior (M.P.) Pin Code – 474 005
Phone : 0751 - 2470185
Fax : 0751 – 2470841
Email : [email protected]
xiii
CAMTECH Publications
CAMTECH is continuing its efforts in the documentation and up-gradation of information on
maintenance practices of Signalling & Telecom assets. Over the years a large number of
publications on Signalling & Telecom subjects have been prepared in the form of handbooks,
pocket books, pamphlets and video films. These publications have been uploaded on the
internet as well as railnet.
For downloading these publications
On Internet:
Visit www.rdso.indianrailways.gov.in Go to Directorates → CAMTECH Gwalior → Other Important links → Publications for
download - S&T Engineering or click on link
https://rdso.indianrailways.gov.in/view_section.jsp?lang=0&id=0,2,17,6313,6321,6326
On Railnet:
Visit RDSO website at 10.100.2.19
Go to Directorates → CAMTECH → Publications → S&T Engineering Or click on the link
http://10.100.2.19/camtech/Publications/CAMTECH%20Publications%20Online/SntPub.htm
A limited number of publications in hard copy are also available in CAMTECH library which
can be got issued by deputing staff with official letter from controllong officer. The letter
should be addressed to Director (S&T), CAMTECH, Gwalior.
For any further information regarding publications please contact:
Director (S&T) – 0751-2470185 (O)(BSNL)
SSE/Signal - 7024141046 (CUG)
Or
Email at [email protected]
Or
FAX to 0751-2470841 (BSNL)
Or
Write at
Director (S&T)
Indian Railways Centre for Advanced Maintenance Technology,
In front of Hotel Adityaz, Airport Road, Maharajpur,
Gwalior (M.P.) 474005
xiv
List of Figures Figure 1: Front view of Webfil UFSBI cubicle for Single Line ................................................................... 7
Figure 2: Front view of Webfil UFSBI Equipment for Double Line ........................................................... 8
Figure 3: Power Supply Unit Module ..................................................................................................... 17
Figure 4: System Module ....................................................................................................................... 18
Figure 5: Communication Driver ........................................................................................................... 19
Figure 6: Relay Input Module ................................................................................................................ 20
Figure 7: Relay Output Module ............................................................................................................. 21
Figure 8: Relay Feedback Module ......................................................................................................... 22
Figure 9: Display & Reset Panel front view ........................................................................................... 23
Figure 10: Alarm Extender Module front view ...................................................................................... 24
Figure 11: Alarm Panel for SM .............................................................................................................. 25
Figure 12: Block level interconnection diagram (Single Line) ............................................................... 35
Figure 13: Block Level interconnection diagram Double Line ............................................................... 36
Figure 14: Deltron UFSBI Cubicle front view ......................................................................................... 42
Figure 15: Deltron UFSBI Cubicle rear view ........................................................................................... 43
Figure 16: DC-DC Converter front view ................................................................................................. 44
Figure 17: DC-DC Converter rear view .................................................................................................. 44
Figure 18 : UFSBI Digital System ........................................................................................................... 46
Figure 19: Sensing of relays by Input Cards .......................................................................................... 47
Figure 20: Function of CPU & CC Cards ................................................................................................. 48
Figure 21: Function of Output Card ....................................................................................................... 48
Figure 22: Modem Front and Rear views .............................................................................................. 49
Figure 23 : Modem Power connection .................................................................................................. 49
Figure 24 : Modem to Motherboard data connection .......................................................................... 49
Figure 25 : Modem to TX & Rx terminals .............................................................................................. 50
Figure 26 : Modem to Modem interconnection between two UFSBI on Voice channel of OFC ............ 50
Figure 27 : Connectivity between two modems through copper conductor of quad cable .................. 50
Figure 28 : Reset Box Front & Rear views ............................................................................................. 50
Figure 29: UFSBI Alarm Panel Front & Rear view .................................................................................. 52
Figure 30: Pattern of Address Configuration Jumpers .......................................................................... 53
Figure 31: BPAC Single Line Block Panel ............................................................................................... 58
Figure 32: Block Panel front view .......................................................................................................... 58
Figure 33: Block Panel front view .......................................................................................................... 59
Figure 34: BPAC Double Line Block Panel .............................................................................................. 59
Figure 35: Provision of EBLM in UFSBI application ............................................................................... 62
Figure 36 :Flowchart for Rectification of Communication link failure Deltron make UFSBI ................. 77
Figure 37: Block Proving with Single Section Digital Axle Counter & UFSBI for Single Line .................. 78
Figure 38 :Block Proving with Single Section Digital Axle Counter & UFSBI for Double Line ................ 80
xv
List of Tables
Table 1: BPAC (Block Panel & UFSBI) RDSO/SPN/188/2004 4
Table 2: Description of Relays for BPAC with UFSBI on Single Line 11
Table 3: Description of Relays for BPAC with UFSBI on Double Line 14
Table 4: Fault codes of Webfil UFSBI 27
Table 13: Colour scheme of PE insulated Quads 34
Table 5: Inputs & Outputs of DC-DC Converter 44
Table 6:Block Proving with Axle Counter : Relay disposition for Single Line 54
Table 7:Block Proving with Axle Counter : Relay disposition for Double Line 54
Table 8: Relays Description 55
Table 9 : Single Line Block Panel Indications & Controls 58
Table 10: Double Line Block Panel Indications & Controls 60
Table 11: Maintenance Schedule for UFSBI 64
Table 12: Error code list & Recommended actions for Block Working With UFSBI & DAC(Deltron) in
case of Faults/ Errors 67
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Chapter I
Universal Fail Safe Block Interface (UFSBI)
1.1 Introduction
Universal Fail Safe Block Interface (UFSBI) is used as a Block Interface to Conventional
Block Instruments. UFSBI conforms to IRS specification No.S104/2012. It has wide
applications as a 16 I/O Fail-Safe MUX to reduce the dependency on copper conductors.
UFSBI is a 2 out of 3 fail-safe (SIL-4) multiplexer capable of exchanging 16 relay states
simultaneously over each direction between two locations separated by a distance but
connected over Quad -Cable, OFC or Radio.
System description The UFSBI system acts as multiplexer for communicating the commands from one
block panel to other in a fail safe manner to transfer block instrument signals (DC and
analog FM signals converted to status) to the other end. The communication is in full
duplex mode. The medium of communication is digital channels of Optical fiber,
Copper cable or Microwave radio (Through RS232 Serial Port). The MUX with its
accessories, Interlocking relays and power supply are housed in a cubicle called UFSBI
cubicle. .
Salient features
(a). The equipment is capable of driving safety signalling relays conforming to
specification BRS:930 (Q series relays).
(b). The equipment is capable of working on Quad cable as per TC 30/97 as well as
Voice/Data Channel provided over Optical Fibre. The coding of signal
transmission takes care of types of noise generally encountered in the transmission
system and ensures safety of operation.
(c). Each equipment in the section has a unique address, which can be set through
back-panel jumpers.
(d). The information exchanged between the pair of the interface equipment
contains the source & destination address.
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(e). Wrongly addressed information packets are promptly rejected by the system and
frequent receipt of such packets is detected as link failure by the system.
(f). The telephone will work on a separate voice channel.
(g). The system works on 24V DC + 20% - 10%.
(h). A push button is provided for resetting UFSBI inside the cubicle on a reset box.
The resetting system is provided with a veeder counter to count the number of reset
action.
Applications of UFSBI
The various applications of UFSBI as approved by RDSO are given below:-
1. As a Fail-safe Signal Interface for the following Block Instruments to work on OFC /
Microwave.
(i). SGE Double Line Block Instrument.
(ii). NEALS Ball Token (NBT) single Line Block Instrument
(iii). DIODO TLBI Single Line Block Instrument
(iv). Token Less Push Button type Block Instrument.
2. As a Fail-safe Mux in Block Proving with Axle Counter (As Per IRS S:105/2012).
3. As a 16 I/O MUX used for relay state transfer in ABS / IBS / Gate / Slot transfer
application to reduce the number of copper conductors.
1.2 Block Proving By Axle Counter (BPAC) using UFSBI
Block Proving with Axle Counter Using UFSBI conforms to specification IRS S: 105/2012.
In this application, the UFSBI is an integral part of the Block Instrument.
The number of UFSBI I/O used for this application is 7.
Salient features It is a non-co-operative, user-friendly push button type Block Instrument capable of
providing the last vehicle detection in both single & double line sections.
The Block Panel provided, offers audio-visual indications for all vital information.
The interlocking circuits and input/output through Q-series relays provide galvanic
isolation, making the system suitable in both RE & Non- RE sections.
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The system is media independent i.e. it works on Copper cable, OFC or microwave
without hampering the fail-safety of the operation.
The system is triple modular redundant which means increase in availability. This
system also holds the final status using latch relays so that during Power supply or any
failure it remains in last operating state.
The total system (Including UFSBI, Axle Counter and Telephone) can work on Dark
Fibre also. 3 cores (out of 24 Cores) are needed for Single Line and 4 cores for double
line Block operation. Hence it requires no STM or Primary Multiplexers.
Uses Axle Counter for Block Occupied / Free verification & Last Vehicle Check.
Working principle
The trains are worked on Absolute Block system.
Each block section is provided with an Axle Counter to verify the occupation or
clearance of block section and indicated on Block Panel.
It is not possible to take Last Stop Signal to ‘OFF’ unless “LINE CLEAR” has been
obtained from the station in advance.
It is not possible to take “LINE CLEAR” unless block section and an adequate
distance beyond first stop signal of station in advance is clear of trains.
The Last Stop Signal assumes ‘ON’ aspect automatically on entry of train into block
section and retains this ‘ON’ position, till a fresh “LINE CLEAR” is obtained.
Block section automatically shows “TRAIN ON LINE” on block panel when a train
enters into the block section on “LINE CLEAR”.
Audio – Visual alarms for Train entry/exit, to/ from block section are provided and
are to be acknowledged.
“LINE CLOSE” feature is automatic after complete arrival of train.
“LINE CLEAR” cannot be taken without taking consent of receiving station.
“LINE CLEAR” cancellation is Co-operative.
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Table 1: BPAC (Block Panel & UFSBI) RDSO/SPN/188/2004
BPAC (BLOCK PANEL & UFSBI) RDSO/SPN/188/2004
BLOCK OPERATION Push Button Type
BLOCK MEDIA Copper 6-Quad Cable / Voice channel of P-Mux /
Microwave / E1/ Dark Fibre
BLOCK COMMUNICATION Fail-safe Digital Communication at 2400 bps.
Optional Media fall-back with Auto Media C/O
BLOCK LENGTH
Upto 25 Km (typically) on 6Q-Cable
Upto 50 Km typically on OFC
Upto 30 Km typically on mW Radio
RE COMPATIBILITY Workable in RE area
TIME FOR TAKING LINE
CLEAR, TOL & LINE CLOSE 1-2 sec. (max.)
LAST VEHICLE VERIFICATION
& LINE CLOSE Automatic (Auto TOL & Auto Line Close)
OPERATOR INVOLVEMENT
PER TRAIN MOVEMENT Only once ( for taking Line Clear)
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Chapter II
Block Proving By Axle Counter using
UFSBI –Webfil Make
2.1 Introduction
Webil make BPAC using UFSBI consists of Triple redundant hardware at all levels with
2/3 decision logic for safety and availability. All input-output connections are optically
and/or galvanically isolated to eliminate ground noise and earth faults. It consists of 16-
digit dot-matrix alpha-numeric display for user friendly man-machine interface.
2.2 Sub systems of BPAC with UFSBI
The system is a Block Proving system and it works with other subsystems mentioned
below:
(i) Universal Fail Safe Block Interface
(ii) Block Panel
(iii) Single section Digital Axle Counter
(iv) Block Telephone
(v) Quad Cable or Voice channel on OFC
(vi) Battery Set
(vii) Battery Charger / IPS module
(viii) Relay rack with relays
2.3 Salient features
The BPAC is of 2 out of 3 hardware architecture with implementations of the fail safety
principles. It complies with the CENELEC standards and conforming to Safety Integrity
Level - 4 (SIL-4).
The system incorporates auto features and eliminates manual co-operations from other end
for
(i). Line Clear operation.
(ii). Emergency cancellation at the receiving station.
(iii). Automatic Train On Line.
(iv). Automatic Line Close after sequence proved at receiving end.
(v). Simplified Block Back / Block Forward Operations.
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(vi). Cooperative Cancellation.
(vii). Line Clear Blocking Key (LCB Key) to prevent automatic granting of
Line Clear.
(viii). Station Master Key (SM Key) to prevent unauthorized panel operations.
(ix). Data logger connectivity.
(x). Communication media: (1 pair cable in quad or on voice channel in
OFC.
(xi). Block bell and telephone on separate pair of quad or voice channel of
OFC.
2.4 UFSBI Cubicle
The UFSBI cubicle consists of following modules:
Alarm Extender Module
Display & Reset Panel
Power Supply unit -2 Nos.
Communication Driver -1 No.
System Module – 3 Nos. (Sys A, Sys B, Sys C)
Relay Input Module -2 Nos. (I/P A, I/P B)
Relay Feedback Module-2 Nos. (F/P A, F/P B)
Relay Output Module-2 Nos. (O/P A, O/P B)
Sealing arrangement with double locking is provided at the back door of the panel.
Faceplate of the Block Panel is covered with transparent acrylic sheet of 4mm thickness.
Front views of UFSBI Panels for Single Line and Double Line are given on next page:
Figure 1 & Figure 2
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Figure 1: Front view of Webfil UFSBI cubicle for Single Line
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Figure 2: Front view of Webfil UFSBI Equipment for Double Line
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2.5 Cable requirements
Quad Cable or Voice channel
For Single Line:
SSDAC of Station A to SSDAC of Station B – Voice Channel 2 wire in OFC or
½ quad
Digital MUX UFSBI of Station A to Digital MUX of Station B – Voice Channel
4 wire in OFC or 1 quad.
For Telephone communication from Station A to Station B - Voice Channel 2
wire in OFC or ½ quad
Hence total requirement - 2 quad or 3 voice channels (1 no. 4 wire & 2 nos. 2 wire) in
OFC
For Double Line:
DN SSDAC of Station A to DN SSDAC of Station B – Voice Channel 2 wire in
OFC or ½ quad
UP SSDAC of Station A to UP SSDAC of Station B – Voice Channel 2 wire in
OFC or ½ quad
Digital MUX UFSBI of Station A to Digital MUX of Station B – Voice Channel 4
wire in OFC or 1 quad.
For Telephone communication from Station A to Station B - Voice Channel 2 wire
in OFC or ½ quad
Hence total requirement - 2 ½ quad or 4 voice channels (1 no. 4 wire & 3 nos. 2 wire) in
OFC
Specification:
Cables shall be as per specification TC 30/97 or latest.
S/N ratio: At least 20dB
Attenuation 0-3dB (at 1 KHz )
For connecting BPAC to the optical mux
0.9mm / 600 ohms telephone cable without joints.
56/0.3mm copper wire for power input.
(Length as per distance between battery charger or IPS room to BPAC cubicle.)
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2.6 Power Supply arrangement
There should be
Separate power supply for Block Panel, UFSBI & relays
Separate power supply for Digital Axle Counter
Separate power supply for Block Telephone
Battery Set
The Block Proving with Axle Counter system comprising of Block Panel, Universal Fail
Safe Block Interface and the relays work on 24 V D.C. with a maximum current
consumption of 5A.
Good quality 24V 80AH battery with low internal resistance should be used for BPAC.
BPAC battery should not be shared with any other gear or any other adjacent BPAC. Battery
Voltage should not exceed the range: 21.6 to 28.8V DC.
Battery Charger / Module of IPS
The charger will be as per IRS S-86 / 2000 to cater 5A/24V DC load.
The IPS module as per RDSO SPN 165/2004 to cater 5A/24V DC load. Normal voltage:
24V/5A (-10% to + 20%) at the output voltage at following 2 condition must be within
21.6V to 28.8V.
Charger ON & BPAC ON.
Charger OFF (for 15 min) & BPAC ON.
(Note: The output voltage must be measured at the terminals of DC-DC converter input).
2.7 Relay Rack & Signalling Relays
All the relays used as per the circuit diagram are of RDSO approved make. Relay rack is
housed inside the same UFSBI cabinet. The Electronic Fail Safe Timer (IRS: S
61/2000) is micro controller based. Description of Relays is given on next page.
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Table 2: Description of Relays for BPAC with UFSBI on Single Line
Sr
No.
Relay
Type of Relay and
normal status
Description
01
TGTR
QL1 (11F,4B)
DROP
TRAIN GOING TO Relay.
Operates to pick up on receipt of LINE CLEAR at
train sending station.
Normalizes when station in advance sets to
LINECLOSED after train arrival or cancellation of LINE CLEAR.
02
TCFR
QL1 (11F,4B)
DROP
TRAIN COMING FROM Relay. Operates to pick up on receipt of LINE CLEAR
enquiry from train sending station. Normalizes after complete train arrival or cancellation of LINE CLEAR.
03
ASCR
QN1 (8F,8B)
DROP
ADVANCE STARTER SIGNAL
CONTROL Relay.
Picks up when LINE CLEAR is available and
necessary controls corresponding to the operation
are reversed by the SM.
Drops if either entry of Train in Block Section or withdrawal of any SM control.
04
TGTXR
QN1 (8F,8B)
DROP
TRAIN GOING TO CODE Relay.
Picks up at train sending station pressing of buttons
for LINE CLEAR enquiry.
Drops when train sending station releases button of
LINE CLEAR enquiry or picking up of TGTR whichever is earlier.
05
TCFXR
QN1 (8F,8B)
DROP
TRAIN COMING FROM CODE
RECEIVE Relay.
Picks up on receipt of LINE CLEAR enquiry
from train sending station.
Drops when station in rear releases Buttons for
LINE CLEAR enquiry or TGTR picks up
whichever is earlier.
06
TGTYR
QN1 (8F,8B)
DROP
TRAIN GOING TO CODE
RECEIVE
Relay.
Picks up on receipt of LINE CLEAR at train
sending station. Drops if either entry of train in Block Section or cancellation of LINE CLEAR.
07
120 JPR QN1 (8F,8B)
DROP
TIMER MATURE REPEATER Relay. Picks up on maturity of Timer for cancellation.
Drops when Block status set to LINE CLOSED.
08
BPNR QN1 (8F,8B)
DROP
BELL PUSH BUTTON Relay. Picks up on pressing of BELL push button with SM’s key IN, else drops.
09
TGTNR QN1 (8F,8B)
DROP
TRAIN GOING TO BUTTON Relay. Picks up on pressing of TRAIN GOING TO push button else drops.
10
CNR QN1 (8F,8B)
DROP
CANCEL BUTTON Relay. Picks up on pressing of CANCEL push button else drops.
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Sr
No.
Relay
Type of Relay and
normal status
Description
11 FR1 QN1 (8F,8B)
DROP FLASH CONTROLLER Relay No.1
12 FR2 QN1 (8F,8B)
DROP FLASH CONTROLLER Relay No.2
13
TAR 1
QNA1 (8F,8B)
DROP
TRAIN ARRIVAL FIRST Relay.
Picks up when control of Reception Signal is
Reverse and HSAT occupied by train and HSBT
clear. Drops when AT clear with a delay.
14
TAR 2
QN1 (8F,8B)
DROP
TRAIN ARRIVAL SECOND Relay.
Picks up when control on Reception Signal is
Reverse and HSAT clear and HSBT occupied by
the train. Drops when block status set to LINE CLOSED.
15
CAR
QN1 (8F,8B)
DROP
CANCEL Relay.
Picks up at train Receiving station on initiation of
cancellation provided all controls pertaining to
Advance Starter and Reception Signal/Signals & Signals controlled by them are at Normal at both the stations.
16
BTSR
QN1 (8F,8B)
PICK UP
BLOCK TRACK STICK Relay.
Picks up when Block status is LINE CLOSED and
Block track is clear. Drops in any of the under-mentioned cases…
(a) Entry of train in Block Section. (b) Cancellation.
17
AZTR
QNA1 (8F,8B)
PICK UP
BLOCK SECTION TRACK Relay of Dispatch Line.
Drops in the under mentioned case:-
(a) Entry of train in the Block Section (b) Failure of Axle Counter.
18
TGTZR
QN1 (8F,8B)
PICK UP
ADVANCE STARTER
SIGNAL NORMAL
CHECKING REPEATER Relay. Picks up to repeat LINE CLOSED condition at train
receiving station after arrival of train or after a LINE CLEAR cancellation has been initiated, else drops.
19
120 EJ
Electronic Time
Delay unit (Fail Safe)
Timer unit for cancellation time of 120 seconds.
20
HSATPR
QNA1 (8F,8B)
PICK UP
FIRST TRACK FOR DIRECTION
PROVING REPEATER Relay. Picks up when HSAT Track circuit is vacant else drops.
21
HSBTPR
QNA1 (8F,8B)
PICK UP
SECOND TRACK FOR DIRECTION
PROVING REPEATER Relay.
Picks up when HSBT Track circuit is vacant else drops.
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Sr
No.
Relay
Type of Relay and
normal status
Description
22
ASGNCR
QNA1 (8F,8B)
PICK UP
ADVANCE STARTER SIGNAL
NORMAL CHECKING Relay.
Picks up when Advance Starter Signal and all its controls are NORMAL, else DROP.
23
HSGNCR
QNA1 (8F,8B)
PICK UP
RECEPTION SIGNAL NORMAL
CHECKING Relay. Picks up when reception signal/signals and all its controls are at Normal else drop.
24
TCFCR
QN1 (8F,8B)
PICK UP
TRAIN COMING FROM CANCEL
Relay.- Picks up at receiving station when
CANCEL CO OP button is pressed at sending
station else drops.
25
TCFZR
QN1 (8F,8B)
PICK UP
TRAIN COMING FROM normal proving
relay.-Picks up at receiving station when TCFR
drops else drops.
26
TGTPR QN1 (8F,8B)
PICK UP
TRAIN GOING TO normal proving relay. Picks
up at sending station when TGTR drops else drops.
27
SHKR QN1 (8F,8B)
PICK UP
SHUNT KEY INDICATING relay. Picks up when key of EKT is ‘IN’ & shunt Release key is ‘OUT’, else drops.
28
ASGNCPR
QN1 (8F,8B)
PICK UP
ADVANCE STARTER SIGNAL NORMAL
CHECKING Relay (for other station).
Picks up when Advance Starter Signal and all its
controls are NORMAL at the other station, else
DROPS.
29 BLR QN1 (8F,8B)
DROP
BELL Relay. Picks up when other station presses the Bell
Button.
30 SD1 QN1 (8F,8B)
TOGGLE
SHUT DOWN Relay 1.
UFSBI health check Relay.
31 SD2 QN1 (8F,8B) TOGGLE
SHUT DOWN Relay 2. UFSBI health check Relay.
32 WD QN1 (8F,8B) PICK UP
WATCH DOG Relay. Refreshes system S/W after every 2 hrs.
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Table 3: Description of Relays for BPAC with UFSBI on Double Line
Sr
No.
Relay
Type of Relay and
normal status
Description
01
WD QN1
(8F,8B)
PICK UP
WATCH DOG Relay. Refreshes system S/W after every 2 hrs if all inputs
and outputs are de-energised.
02
TGTXR
QN1
(8F,8B)
DROP
TRAIN GOING TO CODE Relay.
Picks up at train sending station pressing of buttons for
LINE CLEAR enquiry.
Drops when train sending station releases
button of LINE CLEAR enquiry or picking up of
TGTR whichever is earlier.
03
ASGNCR
QNA1
(8F,8B)
PICK UP
ADVANCE STARTER SIGNAL NORMAL
CHECKING Relay.
Picks up when Advance Starter Signal and all its controls are NORMAL, else DROP.
04
TCFR
QL1
(11F,4B)
DROP
TRAIN COMING FROM Relay. Operates to pick up on receipt of LINE CLEAR enquiry
from train sending station.
Normalizes after complete train arrival or cancellation of LINE CLEAR.
05
HSGNCR
QNA1
(8F,8B)
PICK UP
RECEPTION SIGNAL NORMAL
CHECKING Relay. Picks up when reception signal/signals and all its controls are at Normal else drop.
06
BPNR QN1
(8F,8B)
DROP
BELL PUSH BUTTON Relay. Picks up on pressing of BELL push button with SM’s
key IN, else drops.
07 FR1 QN1 (8F,8B)
DROP FLASH CONTROLLER Relay No.1
08
SD1 QN1
(8F,8B)
TOGGLE
SHUT DOWN Relay 1.
UFSBI health check Relay.
09
TCFXR
QN1
(8F,8B)
DROP
TRAIN COMING FROM CODE
RECEIVE Relay.
Picks up on receipt of LINE CLEAR enquiry from
train sending station.
Drops when station in rear releases Buttons for LINE
CLEAR enquiry or TGTR picks up whichever is earlier.
10
TCFCR
QN1
(8F,8B)
PICK UP
TRAIN COMING FROM CANCEL Relay. Picks up at receiving station when CANCEL CO OP button is pressed at sending station else drops.
11
TGTYR
QN1
(8F,8B)
DROP
TRAIN GOING TO CODE RECEIVE
Relay.
Picks up on receipt of LINE CLEAR at train sending
station.
Drops if either entry of train in Block Section or cancellation of LINE CLEAR.
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Sr
No.
Relay
Type of Relay and
normal status
Description
12
ASGNCPR
QN1
(8F,8B)
PICK UP
ADVANCE STARTER SIGNAL
NORMAL CHECKING Relay (for other station).
Picks up when Advance Starter Signal and all
its controls are NORMAL at the other station, else
DROPS.
13
TGTZR
QN1
(8F,8B)
PICK UP
ADVANCE STARTER SIGNAL
NORMAL CHECKING REPEATER Relay. Picks up to repeat LINE CLOSED condition at train
receiving station after arrival of train or after a LINE
CLEAR cancellation has been initiated, else drops.
14
BLR QN1
(8F,8B)
DROP
BELL Relay. Picks up when other station presses the Bell Button.
15 FR2 QN1 (8F,8B)
DROP FLASH CONTROLLER Relay No.2
16 SD2 QN1 (8F,8B)
TOGGLE SHUT DOWN Relay 2. UFSBI health check Relay.
17
BTSR
QN1
(8F,8B)
PICK UP
BLOCK TRACK STICK Relay.
Picks up when Block status is LINE CLOSED and
Block track is clear.
Drops in any of the under-mentioned cases…
1. Entry of train in Block Section. 2. Cancellation of LINE CLEAR.
18
TAR 2
QN1
(8F,8B)
DROP
TRAIN ARRIVAL SECOND Relay.
Picks up when control on Reception Signal is Reverse
and HSAT clear and HSBT occupied by the train. Drops when block status set to LINE CLOSED.
19
TAR 1
QNA1
(8F,8B)
DROP
TRAIN ARRIVAL FIRST Relay. Picks up when control of Reception Signal is Reverse
and HSAT occupied by train and HSBT clear. Drops when AT clear with a delay.
20
HSBTPR
QNA1
(8F,8B)
PICK UP
SECOND TRACK FOR DIRECTION
PROVING REPEATER Relay.
Picks up when HSBT Track circuit is vacant else drops.
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Sr
No.
Relay
Type of Relay and
normal status
Description
21
HSATPR
QNA1(8F,8B)
PICK UP
FIRST TRACK FOR DIRECTION
PROVING REPEATER Relay.
Picks up when HSAT Track circuit is vacant else drops.
22
AZTR(D)
QNA1
(8F,8B)
PICK UP
BLOCK SECTION TRACK Relay for
dispatch line.
Drops in the under mentioned cases:-
1. Entry of train in the Block Section. 2. Axle Counter failure.
23
120 EJ
Electronic Time
Delay unit (Fail Safe)
Timer unit for cancellation time of 120 seconds.
24
120 JPR
QN1(8F,8B)
DROP
TIMER MATURE REPEATER Relay. Picks up on maturity of Timer for cancellation. Drops when Block status set to LINE CLOSED.
25
CAR
QN1(8F,8B)
DROP
CANCEL Relay. Picks up at train Receiving station on initiation of
cancellation provided all controls pertaining to Advance
Starter and Reception Signal/Signals & Signals
controlled by them are at Normal at both the stations.
26
CNR QN1 (8F,8B)
DROP
CANCEL BUTTON Relay. Picks up on pressing of CANCEL push button else
drops.
27
TGTNR QN1 (8F,8B)
DROP
TRAIN GOING TO BUTTON Relay. Picks up on pressing of TRAIN GOING TO push button
else drops.
28
ASCR
QN1 (8F,8B)
DROP
ADVANCE STARTER SIGNAL
CONTROL Relay.
Picks up when LINE CLEAR is available and necessary
controls corresponding to the operation are reversed by
the SM.
Drops if either entry of Train in Block Section or withdrawal of any SM control.
29
TGTR
QL1 (11F,4B)
DROP
TRAIN GOING TO Relay. Operates to pick up on receipt of LINE CLEAR at train
sending station.
Normalizes when station in advance sets to LINE
CLOSED after train arrival or cancellation of LINE
CLEAR.
30
AZTR(R)
QNA1
(8F,8B)
PICK UP
BLOCK SECTION TRACK Relay for
receive line.
Drops in the under mentioned cases:- 1.Entry
of train in the Block Section 2. Axle Counter failure.
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2.8 Description of Modules
(i) Power Supply Unit Module
Table of Contents
Functions
The power supply unit operates from isolated
24V supply
Each PSU has two separate switching power
supply modules ,one for +5V and the other for
+12V.
Input Under-voltage & Over-voltage alarm
Since two power supplies are in hot standby
mode, withdrawal of one PSU due to any
failure does not inhibit operation of the system.
Alarm Indications in PSU Module
BATT : Input Battery supply present
IP SHUT : Input Battery voltage goes beyond the
tolerable range
IP OV : Input Battery voltage goes beyond the
stipulated level but below the highest tolerable
range
IP UV : Input Battery voltage falls below stipulated
level
OK : Output voltage (5V/12V) within tolerable
range
SHUT : Output voltage (5V/12V) goes beyond the
tolerable range
UV : Output voltage (5V/12V) falls below the
tolerable range
Figure 3: Power
Supply Unit Module
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(ii) System module
Figure 4: System Module
Functions
The System Module is based on high
performance 80C196KC microcontroller from
Intel
By virtue of the Inter-Processor Communication
(IPC) each of the processors is having status and
alarm information of the other two processors
and their I/O sub-system
Communication of Inter-Block data is carried out
through a built-in modem device
Alarm Indications in SYSTEM Module
ALM : Indicates any alarm in the Equipment
RMT : Indicates any alarm in the Remote Equipment
2/3 : System works in 2 out of 3 modes
SD : Processor goes to shut down state due to any
failure
SSB : System fails to receive valid packets from the
remote end
RSSB : Remote end system has gone to SSB state
LNK OK : Tx-Rx path is OK between the local end
UBX 2000 and the remote end
SYS OK : As long as there is no alarm in the system
PROC ACTV : Reflects the health of the System card
and its associated hardware in other cards
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(iii) Communication Driver
Figure 5: Communication Driver
Functions
Drives hardware for operating the power
shutdown relay (SD1 & SD2) and watchdog
relay (WD) .
Global Reset hardware logic which will
initiate reset of all the three processors
Inter-Block Communication (IBC) is carried
out for voice channel interface
Alarm Indications in Communication Driver
Module
SYS ACTV: System works in 3/3 or 2/3 mode
TXA : Inter block transmission takes place
through System Module A at the local end
TXB : Inter block transmission takes place
through System Module B at the local end
TXC : Inter block transmission takes place
through System Module C at the local end
CNTL VOLT : Health of SD1 & SD2
Table of Contents
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(iv) Relay Input Module
Functions
Accepts 8 external potential-free
changeover contacts
All the contacts are sensed
through opto-isolators
Status of each input is displayed
on the front panel through
LEDs
Alarm Indications in Relay Input
Module
GREEN : Input channel senses the
back contact of the input relay
AMBER : Input channel senses the
front contact of the input relay
Figure 6: Relay Input Module
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(v) Relay Output Module
Functions
The Output Module drives 8 Q-
series safety relays.
Receives feedback of the output
status from various stages to
ensure the integrity of data .
Status of each Output is
displayed on the front panel
through LEDs
Alarm Indications in Relay output
Module
AMBER : Output relay activates, the
corresponding amber LED glows
DAG - A : System A is in
disagreement regarding the status of
the output relays
DAG - B : System B is in
disagreement regarding the status of
the output relays
DAG - C : System C is in
disagreement regarding the status of
the output relays
Figure 7: Relay Output Module
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(vi) Relay Feedback Module
(vi) Display and Reset Panel
Functional Description – Display Section
A 16 character alphanumeric display is used to prompt the various alarm conditions with
short mnemonics for easy understanding of the problem. The display part is fitted centrally in
the Display & Reset Panel below the Alarm Extender Module in the subrack and is common
for all the three processors. Normally the display will show “SYSTEM OK”. In case of any
alarm in the system a piezo buzzer is activated to draw the attention of the operating staff.
Functions
Same as the Input Module
except the hardwired
identity code for the feedback
module
Read the feedback of the
external relays connected to
the Relay Output Module.
Status of each Feedback is
displayed on the front panel
through LEDs
Alarm Indications in Relay
Feedback Module
GREEN : Senses the back
contact of an output relay
AMBER : Senses the font contact
of an output relay
Figure 8: Relay Feedback Module
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Acknowledgement of alarm through “ACKN” key on the display panel stops the buzzer but
the alarm is still displayed on-line as long as it is continued. The display panel also
accommodates the veeder counter for registering external resets. Three green LED indicators
naming A, B, C indicate to which system card display is connected. B y pressing the SYS
key this connectivity can be changed. Being the “RMT” key pressed, pressing the “ACKN”
key the status of the remote end can be viewed when communication link between local end
& remote end is OK. Otherwise “RMT:STAT UNKNOWN” will be displayed.
Figure 9: Display & Reset Panel front view
Functional Description – Reset Section
When initially power is applied to the system,
(1). The count no. of veeder counter will increase by one as soon as the system passes
through Power on Reset.
(2). The system goes through some initial self checking showing ‘SYSTEM CHECK’. If any
of the checks fails system goes to shutdown. Now the system comes to a point where it
looks for control voltage of the output card showing ‘CNTL. VOLT ABSENT’. When
“CNTL VOLT” switch is pressed momentarily, desired voltage gets available, otherwise
system goes to shutdown. Now the system will transit to SSB state, assuming failure of
inter block communication and will display the message “IB RX FAIL”. When the
system at the other end is also powered ON, the local end system will transit to the
normal state after successful reception of at least three interblock communication packets
and will display the message “SYSTEM OK”.
Procedure – Reset Operation
To Reset and bring the BPAC into operation, follow the following steps:-
Press the “RESET” switch.
Note that the veeder counter value in the panel increase by one.
Wait till the UFSBI completes initial self checking showing “SYSTEM CHECK”.
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If UFSBI detects any fault during initial self checking system will go to
shut down, giving respective alarm.
Otherwise, at the end of successful self checking, when the display shows
“CNTL VOLT ABSENT”, press the “CNTL VOLT” switch.
If everything is OK, the UFSBI will display “SYSTEM OK”.
Alarm Extender Module
Figure 10: Alarm Extender Module front view
Functional Description of Alarm Extender Module
Processes & annunciates various alarm conditions Provides additional amplification to
combat 30dB attenuation.
Checks both the local and remote loopback. It also comprises a RS232-c port which is
provided for directly connecting to low speed data channel on OFC .
Depending on the various alarm conditions, corresponding relays, whose NO & NC contacts
are made available through a tag block for extension to SM’s panel & data- logger, are
picked up.
The Alarm Extender Module has the facility to check both the local and remote loopback. It
also comprises a RS232-c port which is provided for directly connecting to low speed data
channel on OFC / Microwave Radio.
The Alarm Extender is based on high performance 80C196KC microcontroller
from Intel. The module has three functional sections for its operation-
The alarm processing section – Processes & annunciates various alarm conditions.
The amplifier section – Provides additional amplification to combat 30dB
attenuation.
The power supply section – To drive internal circuitry.
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Alarm Indications in ALARM EXTENDER Module
SYS FAIL (SINGLE) : Indicates that the system works in 2 out of 3 mode
PSU-FAIL (SINGLE) : Indicates that any one of the two power supply unit goes into
shutdown condition
LINK-FAIL : Problem occurs in the communication link between the local end and remote
end
SYS-FAIL (SD) : Indicates that the UFSBI has gone into SD State.
PSU-FAIL (SD) : Indicates that both the power supply units go into shutdown condition
resulting in SD mode of the UFSBI
UFSBI-OK : Indicates that the Equipment is in OK condition.
CNTL.-VOLT. : Indicates absence of Control voltage.
ALMOD-OK : Indicates health of the Alarm Extender Module is OK.
LOOP BACK ENABLE : Indicates the system is loopbacked
(vii) Alarm Panel for SM
Figure 11: Alarm Panel for SM
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Functional Description of Alarm Panel for SM
The functionality of the UFSBI Alarm Panel is to indicate proper alarm to draw attention of
the SM to enable him to understand the health of UFSBI, which is located at a distance &
take necessary action. Whenever any alarm condition takes place in UFSBI, alarm extender
module picks up certain relays, whose dry contacts are used to extend driving voltages for the
alarm LEDs in the panel based on the UFSBI status & alarm relay to enable buzzer, which
stops after pressing the acknowledgement switch.
Alarm Indications in ALARM Panel for SM
1PSU
This is an amber LED. Under normal operating condition, this LED is OFF. When this
LED glows, it indicates that any one of the two power supply unit goes into shutdown
condition.
1SYS
This is an amber LED. Under normal operating condition, this LED is OFF. When this
LED glows, it indicates that the system works in 2 out of 3 modes.
2PSU
This is a red LED. Under normal operating condition, this LED is OFF. . When this LED
glows, it indicates that both the power supply units go into shutdown condition resulting in
SD state of UFSBI.
2SYS
This is a red LED. Under normal operating condition, this LED is OFF. When this LED
glows, it indicates that the UFSBI has gone into SD State.
LINK
This is a red LED. Under normal operating condition, this LED is OFF. If any problem
occurs in the communication link between the local end and remote end of UFSBI, this will
glow.
ALMOD
This is a red LED. Under normal operating condition, this LED is OFF confirming that the
health of the Alarm Extender Module is OK. This LED becomes ON when Alarm Extender
Module goes faulty.
UFSBI
This is a bicoloured LED. Under normal operating condition, this LED is green. When any
alarm appears in UFSBI due to any reason, internal or external, this LED becomes red.
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2.9 Troubleshooting through Alarm display
A 16 character alphanumeric display is used to prompt the various alarm conditions with
short mnemonics for easy understanding of the problem.
As long as no failure occurs in the system, the display remains “SYSTEM OK”. But if any
failure occurs then the buzzer will start beeping and the summarised alarm will come in the
display in the form “MAJOR: X MINOR: Y”, where X & Y are integers. The operator /
maintainer will then have to press the ACKN switch to see the alarm status. As soon as the
ACKN switch is pressed, the buzzer will stop beeping and the relevant faulty message
information will be displayed
Alarm display during fault conditions
Three LED indicators naming A, B, C indicate to which system module display is connected.
By pressing the SYS switch the connectivity of the display panel to the particular system
module A, B, C can be selected.
Different alarms in the system normally displayed as ‘alpha numeric’ characters in the
Display Panel during a faulty condition are given along with their corrective action in the
tabular form below:
Nomenclature: SD = Shutdown SSB = Safe standby NML = Normal
Table 4: Fault codes of Webfil UFSBI Alarm Display Alarm type Reason Corrective Action
*INPUT X
FAULTY
(X = 1, 2 ... , 16)
Major : SD Both front & back contacts of
I/P relay either open or shorted.
Check the connectivity of the
complementary contacts of
respective input relay.
*IP-X NO
MATCH
(X = 1, 2 ... , 16)
Major : SD Self input data different from
both adjacent processors.
Reset UFSBI, if not retrieved
into OK condition, change the
respective I/P card.
*OUTPUT X
FAULTY
(X = 1, 2 ... , 16)
Major : SD Both front & back contacts of
OP relay either open or shorted.
Final valid latch data different
from OP relay status.
Reset UFSBI, if not retrieved
into OK condition, then check
contacts of the respective
output relay, otherwise change
the respective O/P FEEDBACK
card.
*OP-X NO
MATCH
(X = 1, 2 ... , 16)
Major : SD Self latch data different from
both adjacent processors.
Reset UFSBI, if not retrieved
into OK condition, change the
respective O/P card.
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Alarm Display Alarm type Reason Corrective Action
*SPO X
FAULTY
(X = 1, 2 ... , 16)
Major : SD Relay driver feedback wrong.
Final valid latch data different
from relay driver status.
Reset UFSBI, if not retrieved
into OK condition, change the
respective O/P card.
*INPUT-A
FAULTY
Major : SD Input card signature invalid.
Self input data valid but
different from adjacent
processors.
Reset UFSBI, if not retrieved
into OK condition, change the
respective I/P card.
*OUTPUT-A
FAULTY
Major : SD Output card signature invalid. Reset UFSBI, if not retrieved
into OK condition, change the
respective O/P card.
*FEEDBACK-
A FLTY
Major : SD Feedback card signature
invalid.
Self feedback data valid but
different from adjacent
processors.
Reset UFSBI, if not retrieved
into OK condition, change the
respective O/P FEEDBACK
card.
*INPUT-B
FAULTY
Major : SD Input card signature invalid.
Self input data valid but
different from adjacent
processors.
Reset UFSBI, if not retrieved
into OK condition, change the
respective I/P card.
*OUTPUT-B
FAULTY
Major : SD Output card signature invalid. Reset UFSBI, if not retrieved
into OK condition, change the
respective O/P card.
*FEEDBACK-
B FLTY
Major : SD Feedback card signature
invalid. Self feedback data valid
but different from adjacent
processors.
Reset UFSBI, if not retrieved
into OK condition, change the
respective O/P FEEDBACK
card.
*ROM
FAULTY
Major : SD Computed ROM checksum
different from that of stored
value.
Reset UFSBI, if not retrieved
into OK condition, change the
respective SYSTEM card(s).
*RAM
FAULTY
Major : SD Test pattern written to a
particular RAM location is
different from that of read-back
value.
Reset UFSBI, if not retrieved
into OK condition, change the
respective SYSTEM card(s).
*TIMER
ERROR
Major : SD Timer 2 value not within
tolerable range.
Reset UFSBI, if not retrieved
into OK condition, change the
respective SYSTEM card(s).
*TASK
ERROR
Major : SD Five ms. task / second task if
not executed properly.
Reset UFSBI, if not retrieved
into OK condition, change the
respective SYSTEM card(s).
*PROC ID
ERR
Major : SD Identity & inverted identity
mismatch.
Identity read different from that
of stored value.
Reset UFSBI, if not retrieved
into OK condition, change the
respective SYSTEM card(s).
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Alarm Display Alarm type Reason Corrective Action
*BP BUS
FAULTY
Major : SD Stuck at fault at either I/O
address lines or data lines or
control lines.
Reset UFSBI, if not retrieved
into OK condition, check the
Euro connector of respective
System card and
BACKPLANE. If these are OK
then problem is with System
card or Backplane. Change one
by one to identify the faulty
card. Replace that and rectify
the system.
*ADDR
SETUP ERR
Major : SD Difference between local &
remote address not equal to 5.
Self address setting different
from adjacent values.
Check the proper value of
hardware ADDRESS at
BACKPLANE otherwise
change the BACKPLANE.
*PROCESSING
ERR
Major : SD Normal input & complemented
input mismatch.
Data corruption (00 or 11)
while processing.
Software timer counters beyond
limit.
Reset UFSBI, if not retrieved
into OK condition, Change the
respective I/P card.
*I/O CONFIG
WRONG
Major : SD I/O configuration of local &
remote systems different.
Configuration of I/O modules at
the local end faulty.
Configure I/O cards properly in
the respective I/O slots of
UFSBI subrack.
*OUTPUT
DISAGREE
Major : SD Self output data different from
both adjacent processors.
Reset UFSBI, if it is not
retrieved into OK condition,
check whether any “SD” alarm
of System card exists. If found
replace the System card
otherwise replace the O/P card.
CNTL. VOLT
ABSENT
Major : SD Switched voltage at the output
card not available.
Reset UFSBI, if not retrieved
into OK condition, measure
switched voltage (12V) at
TB18A of BACKPLANE.
*MODE
MISMATCH
Major : SD Processor mode different from
both adjacent processors.
Reset UFSBI, if not retrieved
into OK condition, Change the
respective SYSTEM card(s).
*TABLE
CKSM ERR
Major : SD Computed majority voter table
checksum different from that of
stored value.
Reset UFSBI, if not retrieved
into OK condition, replace the
respective SYSTEM card(s).
*SD WD HW
FAULT
Major : SD Feedback from various stages
of shutdown and watchdog
hardware different from the
desired status.
Reset UFSBI, if not retrieved
into OK condition, check SD1,
SD2 & WD relays and their
respective connections, if not
yet retrieved, replace the
Communication Driver card
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Alarm Display Alarm type Reason Corrective Action
*FAULT IN SD
H/W
Major : SD Feedback from various stages
of shutdown hardware different
from the desired status.
Reset UFSBI, if not retrieved
into OK condition, check SD1
& SD2 relays and their
respective connections, if not
yet retrieved, replace the
Communication Driver card
*STACK
ERROR
Major : SD Stack pointer not remain in its
original position due to some
software failure.
Reset UFSBI, if not retrieved
into OK condition, replace the
respective SYSTEM card(s).
*CPU ERROR Major : SD Instruction execution of CPU
wrong.
Reset UFSBI, if not retrieved
into OK condition, replace the
respective SYSTEM card(s).
*INPUT-A
ABSENT
Major : SD Input card pulled out from the
slot during operation.
Insert the card into the
respective slot properly and
reset UFSBI.
*INPUT-B
ABSENT
Major : SD Input card pulled out from the
slot during operation.
Insert the card into the
respective slot properly and
reset UFSBI.
*OUTPUT-A
ABSENT
Major : SD Output card pulled out from the
slot during operation.
Insert the card into the
respective slot properly and
reset UFSBI.
*OUTPUT-B
ABSENT
Major : SD Output card pulled out from the
slot during operation.
Insert the card into the
respective slot properly and
reset UFSBI.
*FEEDBK-A
ABSENT
Major : SD Feedback card pulled out from
the slot during operation.
Insert the card into the
respective slot properly and
reset UFSBI.
*FEEDBK-B
ABSENT
Major : SD Feedback card pulled out from
the slot during operation.
Insert the card into the
respective slot properly and
reset UFSBI.
*IBC RX FAIL Major : SSB Non receipt of three successive
interblock packets.
If remote UFSBI is in OK
condition then check the
communication link.
*IB ADDR
MISMACH
Major : SSB Address of local & remote
systems different for three
successive interblock packets.
Check the proper value of
hardware ADDRESS at
BACKPLANE for local and
remote, otherwise change the
BACKPLANE.
*IBC PKT
MISMACH
Major : SD No match in all three sub
packets for three successive
frames.
Reset UFSBI
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Alarm Display Alarm type Reason Corrective Action
*IBC TX FAIL Major : SD Protocol of IBC Trans
Feedback frame wrong.
Trans Feedback not available.
Reset UFSBI, if not retrieved
into OK condition, replace the
respective SYSTEM card(s).
*BOTH IPC
RXFL
Major : SD Non availability of IPC packets
from both adjacent processors.
Reset UFSBI, if not retrieved
into OK condition, replace the
respective SYSTEM card(s).
*IPC TX FAIL Major : SD Receipt of IPC RXFL alarm
from both adjacent processors.
Reset UFSBI, if not retrieved
into OK condition, replace the
respective SYSTEM card(s).
*PROC ACTV
FAIL
Major : SD Processor Activity signal in
inactive state (logic high).
During power on the software
would check for both logic high
& low status of Processor
Activity signal. In case of
anomaly, this alarm would be
raised.
Reset UFSBI, if not retrieved
into OK condition, replace the
respective SYSTEM card(s).
*PROC ID
ERR
Major : SD System Activity signal in
inactive state (logic high).
Reset UFSBI, if not retrieved
into OK condition, replace the
respective SYSTEM card(s).
*FALSE
INTERRUPT
Major : SD Invoking of any undesired
interrupt.
Reset UFSBI, if not retrieved
into OK condition, replace the
respective SYSTEM card(s).
PROC-A
INACTIVE
Minor :
NML
If A system goes to SD due to
any reason, the other two
processors would raise this
alarm.
Reset UFSBI, if not retrieved
into OK condition, replace the
respective SYSTEM card.
PROC-B
INACTIVE
Minor :
NML
If B system goes to SD due to
any reason, the other two
processors would raise this
alarm.
Reset UFSBI, if not retrieved
into OK condition, replace the
respective SYSTEM card.
PROC-C
INACTIVE
Minor :
NML
If C system goes to SD due to
any reason, the other two
processors would raise this
alarm.
Reset UFSBI, if not retrieved
into OK condition, replace the
respective SYSTEM card.
IBC PACKET
2/3
Minor:
NML
One of three sub packets of a
frame does not match with
other two for three successive
frames.
Reset UFSBI, if not retrieved
into OK condition, replace the
respective SYSTEM card(s).
PROC-X IPC
RXFL
(X = A,B,C)
Minor :
NML
If a system card goes to SD due
to any reason, the other two
processors would raise this
alarm.
Check if other system card(s)
are in OK or shutdown state. If
so, reset UFSBI, if not retrieved
into OK condition, replace the
SYSTEM card(s) one by one to
identify the faulty one. Replace
the identified faulty one and
restore the system.
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Alarm Display Alarm type Reason Corrective Action
PROC-B IPC
RXFL
Minor :
NML
If B system goes to SD due to
any reason, the other two
processors would raise this
alarm.
Reset UFSBI, if not retrieved
into OK condition, replace the
SYSTEM –B card.
PROC-C IPC
RXFL
Minor :
NML
If C system goes to SD due to
any reason, the other two
processors would raise this
alarm.
Reset UFSBI, if not retrieved
into OK condition, replace the
SYSTEM –C card.
PSU-A O/P
ERROR
Minor :
NML
Output of PSU A alarming but
PSU-B OK.
Replace PSU-A card.
PSU-B O/P
ERROR
Minor :
NML
Output of PSU B alarming but
PSU A OK.
Replace PSU-B card.
BAT BEYOND
LIMIT
Minor :
NML
Battery voltage exceeds its
lower or upper limit.
Check and correct Battery,
Charger or IPS.
2.10 Do’s & Don’ts
Do’s Trained and knowledgeable persons should operate & maintain the BPAC.
Battery voltage for BPAC should be checked periodically. It should be within the operating
range (21.6V – 28.8V).
Connectors or Modules should be plugged / unplugged after switching off the Power
Supply.
Replacements of modules should be done with proper spares supplied by the
manufacturer.
Arbitrary or stray earthing connections are to be avoided. Periodic checking of earthing
connection is recommended.
Modules are to be inserted with proper alignment and with reasonable pressure to ensure that
no damage to the connector pins occur.
In case of any alarm, all the processors alarm conditions are to be recorded for proper
analysis and remedial measures.
Don’ts
1. The system should not be ‘RESET’ in case of link failure.
2. Relay testing should not be performed involving found ‘PICK
UP’ or ‘DROP’ in on-line condition.
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Annexure I – Details of Quad Cable Connection
Table of Contents
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Quadding arrangement of cable
Table 5: Colour scheme of PE insulated Quads
Quad
Colour
Quad
Number
Colour of Conductor Insulation
‘A’
wire ‘B’ wire ‘C’ wire ‘D’ wire
Orange 1 White Orange Red Grey
Blue 2 White Blue Red Grey
Brown 3 White Brown Red Grey
Green 4 White Green Red Grey
Yellow 5 White Yellow Red Grey
Bla ck 6 White Black Red Grey
Wire ‘ A’ & ‘B’ shall form a pair and ‘C’ & ‘D’ shall form another pair of quad
colour.
Precautions to be taken during wiring / connections of Axle Counter systems during
Installation or maintenance
In a quad of ea ch colour, the designated pair of quad (mentioned in
Table I) should be used for circuits.
‘ A’ wire & ‘B’ wire : Pair 1 of each colour of quad
‘C’ wire & ‘D’ wire : Pair 2 of each colour of quad
No parallel signalling / other cable should be connected to the quad c able for the
circuit operation
If any wire of the pair of quad is broken / no n-functional, then use fresh pair of
other quad colour
Do not make the two different wires of different quad pairs (colour) for making a
pair to run a circuit operational.
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Figure 12: Block level interconnection diagram (Single Line)
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Figure 13: Block Level interconnection diagram Double Line
Table of Contents
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Annexure II
Pre installation check-list for BPAC (As per IRS:S 105/2012 Ver. 0) Site Requirement details (To be provided by Railways for installation of BPAC)
Station Name:
Railway: Division: Section:
BPAC working between stations: &
Communication Medium/Type: OFC/Microwave/Quad Cable:
Sl.
N
o .
Description Specified Value/
Nos.
Remarks
1. Site condition Spacious, clean, dry, well ventilated room preferably with a fan/exhaust fan with adequate space for installation of BPAC.
2. Battery 24 V / 120 AH 3. Battery charger i) Good quality low ripple battery charger (Axle counter
type) 24V/10A as per IRS: S-86/2000 or IPS module
(24V/5A) as per RDSO/SPN/165/2004 for each BPAC. ii) Power supply for BPAC should be separate from Axle
Counter and Block telephone power supply.
4. Earthing i) Provision for separate earth pit (preferable) ii) Value of Earth resistance:< 2 Ω
5. Lightning arrestor Good lightning protection system with proper connection with earth.
6. Communication
channel
4 wire Voice Channel on OFC Jelly Filled Quad Cable (1 Quad) as per IRS TC 30-05
S/N ratio: At least 20dB Attenuation 0-3dB (at 1 KHz )
7. Cables Indoor Cable of 0.6 / 0.9 mm diameter will suffice the requirement of picking up I/P or O/P relays.
No. of core requirement will be decided as per no. of I/P
and O/P at Station. 56/0.3mm copper wire for power input (Length is as per
distance between battery charger or IPS room to BPAC cubicle.)
8. External terminals
(Centre Link Open
type)
No. of terminals required at CTR will be as per
requirement at station.
9. V/F matching
transformer (as
per communication
cable type)
For the system which has to run on Copper cable in RE area
V/F tapping transformer is required as per IRS:TC 76-2006.
Characteristics impedance for V/F transformer is 600 Ω on
primary side(i.e. BPAC side ) and Quad cable impedance on
secondary side (normally it is 470 Ω )
.......................................... ..........................................
(WEBFIL Representative) (Railway Representative)
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Annexure III
Pre-commissioning Check List for BPAC (Single Line) (As per IRS:S
105/2012 Ver. 0) PART-A: Site Requirement details (Provided by Railways for installation of BPAC) Station Name:
Railway: Division: Section:
BPAC working between stations: &
Communication Medium/Type: OFC/Microwave/Quad Cable: ________________________
Date of installation: Date of commissioning: Sl.
No .
Description Specified Value/ Nos. Obtained
Value / Nos.
(if any)
Remarks
1. Site condition Spacious, clean, dry, well ventilated room preferably with a fan/exhaust fan.
2. Battery 24 V / 120 AH
3. Battery charger Good quality low ripple battery charger (Axle counter type)
24V/10A as per IRS: S-86/2000 or IPS module (24V/5A) as per
RDSO/SPN/165/2004 for each BPAC.
Power supply for BPAC should be separate from Axle
Counter and Block telephone power supply.
Normal voltage: 24V/5A (-10% to + 20%) at the output voltage at
following 2 condition must be within 21.6V to 28.8V.
Charger ON & BPAC ON.
Charger OFF (for 15 min) & BPAC ON.
(Note: The output voltage must be measured at the
terminals DC-DC converter input).
4. Earthing i) Provision for separate earth pit (preferable) ii) Value of Earth resistance:< 2 Ω
Ω
5. Lightning arrestor Good lightning protection system with proper connection with earth.
6. Communication
channel
4 wire Voice Channel
S/N ratio: At least 20dB
Attenuation 0-3dB (at 1 KHz )
dB
dB
7. Communication
Cable
Jelly filled Quad cable as per specn:IRS:TC 30-05
Length of Quad cable :
The cable insulation(must be better than 10 M
Ω/Km when tested with 500V Megger):
Loop resistance (should be less than 55 Ω/Km):
Signal loss (should be less than 30dB at 2.5 KHz):
Near end cross talk (should be better than
Km
M Ω
Ω
dB
55dB/Km at a frequency of 150KHz):
Far end cross talk (should be better than 67.8 dB
dB/Km at a frequency of 150KHz):
The armour of the cable must be properly earthed. dB
8. External terminals
(Centre Link Open
type)
All inputs from the Field, Block Instruments and the Relay room
should be terminated with proper identification in a separate
location to connect to the BPAC terminals.
9. V/F matching
transformer (as per
communication
cable)
To be provided at both ends of Tx and Rx path of the
communication cable Characteristics impedance for V/F
transformer is 600 Ω on primary side(i.e. BPAC side ) and
Quad cable impedance on secondary side (normally it is 470 Ω )
……………………………………… ………………………
(WEBFIL Representative) (Railway Representative)
Table of Contents
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Part B : BPAC Equipment Details (Single line)
Station Name:
Equipment Sl No. : SYS -……..-……………….
Constituent Cards/Modules
Description Sl No. Quantity
Power Supply Card UPS-…-……. UPS-…-…….
2 Nos.
Communication Driver Card UCD-…-……. 1 No
System Card
USY-…-…….
USY-…-…….
USY-…-…….
3 Nos.
Relay Input Card UIP-…-……. UIP-…-…….
2 Nos.
Output Feedback Card UFB-…-……. UFB-…-…….
2 Nos.
Relay Output Card UOP-…-……. UOP-…-…….
2 Nos.
Mother Board UBP-…-……. 1 No
Alarm Extender Module UAM-…-……. 1 No
Display Module UDM-.....-........ 1 No
UFSBI Alarm Panel UAP-…-……. 1 No
Sub Rack
UFSBI Rack
- USR-…-…….
- BPACDL-…-……
1 No.
1 No.
BPAC Panel - BPDL-…-……. 1 No.
Relays:
1. Type: - QN-1 Series (8F / 8B) / 24 V (23 Nos.)
2. Type: - QNA1 Series (8F / 8B) / 24 V (6 Nos.)
3. Type: - QL-1 Series (11F / 4B) / 24 V (2 Nos.)
4. Electronic Time Delay Unit (Fail Safe) – (1 No.)
Address Pairs:
Self: ………………………. Remote: ……………………………..
(WEBFIL Representative) (Railway Representative)
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Annexure IV
Pre-commissioning Check List for BPAC (Double Line) (As per IRS:S
105/2012 Ver. 0) PART-A: Site Requirement details (Provided by Railways for installation of BPAC) Station Name:
Railway: Division: Section:
BPAC working between stations: &
Communication Medium/Type: OFC/Microwave/Quad Cable: ________________________
Date of installation: Date of commissioning: Sl.
No .
Description Specified Value/ Nos. Obtained
Value / Nos.
(if any)
Remarks
1. Site condition Spacious, clean, dry, well ventilated room preferably with a fan/exhaust fan.
2. Battery 24 V / 120 AH
3. Battery charger Good quality low ripple battery charger (Axle counter type)
24V/10A as per IRS: S-86/2000 or IPS module (24V/5A) as per
RDSO/SPN/165/2004 for each BPAC.
Power supply for BPAC should be separate from Axle
Counter and Block telephone power supply.
Normal voltage: 24V/5A (-10% to + 20%) at the output voltage at
following 2 condition must be within 21.6V to 28.8V.
Charger ON & BPAC ON.
Charger OFF (for 15 min) & BPAC ON.
(Note: The output voltage must be measured at the
terminals DC-DC converter input).
4. Earthing iii) Provision for separate earth pit (preferable) iv) Value of Earth resistance:< 2 Ω
Ω
5. Lightning arrestor Good lightning protection system with proper connection with earth.
6. Communication
channel
4 wire Voice Channel
S/N ratio: At least 20dB
Attenuation 0-3dB (at 1 KHz )
dB
dB
7. Communication
Cable
Jelly filled Quad cable as per specn:IRS:TC 30-05
Length of Quad cable :
The cable insulation(must be better than 10 M
Ω/Km when tested with 500V Megger):
Loop resistance (should be less than 55 Ω/Km):
Signal loss (should be less than 30dB at 2.5 KHz):
Near end cross talk (should be better than
Km
M Ω
Ω
dB
55dB/Km at a frequency of 150KHz):
Far end cross talk (should be better than 67.8 dB
dB/Km at a frequency of 150KHz):
The armour of the cable must be properly earthed. dB
8. External terminals
(Centre Link Open
type)
All inputs from the Field, Block Instruments and the Relay room
should be terminated with proper identification in a separate
location to connect to the BPAC terminals.
9. V/F matching
transformer (as per
communication
cable)
To be provided at both ends of Tx and Rx path of the
communication cable Characteristics impedance for V/F
transformer is 600 Ω on primary side(i.e. BPAC side ) and
Quad cable impedance on secondary side (normally it is 470 Ω )
……………………………………… ………………………
(WEBFIL Representative) (Railway Representative) Table of Contents
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BPAC Equipment Details (Double line)
Station Name:
Equipment Sl No. : SYS -……..-……………….
Constituent Cards/Modules
Description Sl No. Quantity
Power Supply Card UPS-…-……. UPS-…-…….
2 Nos.
Communication Driver Card UCD-…-……. 1 No
System Card
USY-…-…….
USY-…-…….
USY-…-…….
3 Nos.
Relay Input Card UIP-…-……. UIP-…-…….
2 Nos.
Output Feedback Card UFB-…-……. UFB-…-…….
2 Nos.
Relay Output Card UOP-…-……. UOP-…-…….
2 Nos.
Mother Board UBP-…-……. 1 No
Alarm Extender Module UAM-…-
……. 1 No
Display Module UDM-.....-
........ 1 No
UFSBI Alarm Panel UAP-…-……. 1 No
Sub Rack
UFSBI Rack
- USR-…-…….
- BPACDL-…-……
1 No.
1 No.
BLOCK Panel - BPDL-…-……. 1 No.
Relays:
1. Type: - QN-1 Series (8F / 8B) / 24 V (20 Nos.)
2. Type: - QNA1 Series (8F / 8B) / 24 V (7 Nos.)
3. Type: - QL-1 Series (11F / 4B) / 24 V (2 Nos.)
4. Electronic Time Delay Unit (Fail Safe) – (1 No.)
Address Pairs:
Self: ………………………. Remote: ……………………………..
(WEBFIL Representative) (Railway Representative)
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Chapter III
Block Proving By Axle Counter using UFSBI
-Deltron
3.1 Introduction
Deltron make BPAC using UFSBI consists of Triple redundant hardware at all levels with 2/3
decision logic for safety and availability. All input-output connections are optically and/or
galvanically isolated to eliminate ground noise and earth faults. It consists of 16-digit dot-
matrix alpha-numeric display for user friendly man-machine interface.
3.2 Subsystems of Deltron UFSBI
1. DC-DC Converter
2. UFSBI-Digital System
3. Relay Rack
Table of Contents
Figure 14: Deltron UFSBI Cubicle front view
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Figure 15: Deltron UFSBI Cubicle rear view
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(i) DC-DC Converter
Figure 16: DC-DC Converter front view
Figure 17: DC-DC Converter rear view
Table 6: Inputs & Outputs of DC-DC Converter
Input 24V DC +20% - 10%, 10 Amps 10 Amps
Output 24V DC 4 Amps For Input Sensing & Pickup
Output Relay
5V DC 4 Amps For Digital ICs &
Microcontroller
+12V DC 1.5 Amps For Comm. as per RS232
–12V DC 1.5 Amps For Comm. as per RS232
Works on “HOT STAND-BY” mode. PSMON(Power Supply Monitoring Unit) is
provided to initiate audio visual alarm in SM’s room on UFSBI ALARM PANEL
discussed in a later chapter
Table of Contents
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Indication & Switches: The following Indication and switches are provided on DC- DC
Converter
Indication Description
Input 24V DC
ON
The input 24V from Battery charger or UPS is coming to the
I /P of DC-DC converter through LPF and MCB
Input 24V DC
Reverse
The 24V input connection from Battery charger or is
connected to DC – DC converter with reverse polarity.
UV Trip The Input Voltage to DC-DC converter is below 19.2 volts. The
system will not start.
OV Trip The Input Voltage to DC-DC converter is above 30.2
volts. The system will not start.
IP ON This indic ation is provided to check that 24V input for
that specific card is present or not
OP ON This indication is provided to check that output of that
specific c ard is on or not
SWITCH For ON / OFF operation of DC-DC Converter w hich in turn
Put On or Shut down the UFSBI DS
(ii) UFSBI Digital System
UFSBI-DS consists of the following parts
Input c ard
CPU card
Control cum Communication Card (CCC)
Output Card
Reset Box.
MODEM.
UFSBI Alarm Panel
The functionalities of each card is given below
Table of Contents
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(a) Input Card
It is responsible for complementary sensing of the relay status of UFSBI. i.e. for sensing one
pick up and one drop contact of each input relays.
INPUT CARD 1, 3 & 5
I/P Relays 1 -8, O/P Relays 1 -8, BIPR1 & BIPR2 Relays feed the input processor cards 1, 3
& 5 provided with opto-isolators.
I/P Relays 9 -16, O/P Relays 9 -16, feed the input processor cards 2, 4 & 6 provided with
opto-isolators.
Input cards convert input 24V DC to 5 V DC
Input Card 1 - 6 CPU Card 1 - 3 Output Card 1 & 2 CC Card
Modems Reset Box
Figure 18 : UFSBI Digital System
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The sensing of relays is described in the figures below:
Figure 19: Sensing of relays by Input Cards
(b) CPU Card
The UFSBI system works on a 2 out of 3 majority voting logic i.e. if one CPU card or its
corresponding Input cards goes bad then also system can work. CPU – A read the
Inputs through Input Card 1&2, CPU – B read the Inputs through Input Card 3&4 and
CPU – C read the Inputs through Input Card 5&6. Thereafter the system validates
the data by Inter-processor communication, adds CRC code and send this to CC
card for transmission. On the other end after receiving the data from CC card it decodes
it and sends that to Output card to pick up the Output relay.
(c) Control & Communication Card The CC Card mainly performs two important functions
It drives health check relays (BIPR1 & BIPR 2) and
It converts the data provided by the CPU card as per RS 232 protocol and sends it to
the Modem.
The functioning of CPU and CC Cards is shown in the figure below:
Table of Contents
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Figure 20: Function of CPU & CC Cards
(d) Output Card
2 numbers of such cards are provided for driving Output relay. 1 st Output card drives Output
relay 1 to 8 and rest 9 - 16 number output relay is driven by O u t p u t C a r d 2
Figure 21: Function of Output Card
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(e) Modem
VF Modem is provided to convert the serial data as per RS232 to Voice Frequency. The following
Fig shows the front and ba ck view of the Modem. Modem works on 4 wire, Asynchronous,
2400 bps mode. Maximum permitted loss between two modems is 30db.
Figure 22: Modem Front and Rear views
Figure 23 : Modem Power connection
Figure 24 : Modem to Motherboard data connection
Table of Contents
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Figure 25 : Modem to TX & Rx terminals
Figure 26 : Modem to Modem interconnection between two UFSBI on Voice channel of
OFC
Figure 27 : Connectivity between two modems through copper conductor of quad cable
(f) Reset Box
Figure 28 : Reset Box Front & Rear views
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The functions of all the components are given below:
Counter
It keeps track of the number of Reset operations taking place. The counter is non-resettable
electro-magnetic type.
RESET Button
Sometimes the power-off and power-on sequence may not lead to display "0b” (ready to
press BI- ON button) on all CPUs. In that case press the RESET button so that the CPUs again
resets itself to show “0b” (ready to press BI-ON button) on all CPUs.
BI-ON Button
This button is required for starting the system. Whenever all the CPUs display “0b”, it
indicates that it is ready for start. The user has to press this button for starting the system.
BZ-ACK Button: This button is required for acknowledging the buzzer whenever it sounds
due to dropping of “Shut down relays” (BIPR1 & BIPR2).
BI-OK IND.: This indication (green) glows when the UFSBI is in working condition.
BI-FAIL IND.: This indication (red) glows when the Block Interface is in failure mode.
LINK FAIL IND.
This indication (yellow) glows steadily when the modem fails to receive any data from
remote station. In normal working condition, when the modem receives data from
remote station, this indication (yellow) will flicker continuously. Flickering of this
indication does not necessarily means that the UFSBI communication is fully established.
Full establishment of UFSBI communication is only decided by seeing “00” in the CPU
cards and O/P relays are picking up.
POWER-ON-RESET Operation
The following steps are to be performed for carrying out the RESET operation of the UFSBI:
Turn off the system power.
Wait for 1 minute.
Power-on the system.
Check the display of the CPU.
Wait till the display on all the CPUs display “0b”
If “0b” is not displayed, try by pressing the RESET button. If the problem persists
check corresponding codes in the error code list and take appropriate action as
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suggested in the remedial action column.
If all the CPUs display “0b” then press the BI-ON button.
Observe that both BIPR1 and BIPR2 pick up immediately after BI-ON is pressed.
Once BIPR1 and BIPR2 pick up, BI fail (Red) indication goes off and BI OK (Green)
indication comes on.
Link fail (Yellow) steady indication goes off & starts flickering as soon as the modem
starts communicating with remote station modem and all the CPU’s display “00”
RESET Operation
The following steps are to be performed for carrying out the RESET operation of the UFSBI:
Press the Reset Button and see that the display in all 3 CPU’s becomes “--“Wait till
the display on all the CPUs display “0b”
If “0b” is not displayed, try by pressing the RESET button. If the problem persists
check corresponding codes in the error code list and take appropriate a ction as
suggested in the remedial action column.
If all the CPUs display “0b” then press the BI-ON button.
Observe that both BIPR1 and BIPR2 pick up immediately after BI-ON is pressed.
Once BIPR1 and BIPR2 pick up, BI fail (Red) indication goes off and BIOK (Green)
indication comes on.
Link fail (Yellow) steady indication goes off & starts flickering as soon as the modem
starts communicating with remo te station modem and all the CPU’s display “00”
(g) UFSBI Alarm Panel The UFSBI alarm panel is provided at SM room to give preventive alarm for single CPU failure,
Redundant DC-DC converter failure and System total failure.
Figure 29: UFSBI Alarm Panel Front & Rear view
The UFSBI alarm panel box consists of following components is given below:
1. ACKN. Button for Single CPU fail: To mute the buzzer if any one of the CPU of
UFSBI goes bad.
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2. ACKN. Button for redundant DC-DC Converter: To mute the buzzer if any module
of DC-DC converter goes bad.
3. ACKN. Button for system failure: To mute the buzzer if UFSBI system goes to shut
down mode.
4. Indication (R) for Single CPU fail: It glows when any one of the CPU of UFSBI goes bad
and remains “ ON” till the fault rectified.
5. Indication (R) for Redundant DC-DC: It glows when any module of DC-DC converter
goes bad and remains “ O N” till the fault rectified.
6. Indication (R) for system failure: It glows when UFSBI system goes to shut down
mode and remains “ ON” till the fault rectified.
Note
The System failure indication (audio & visual) would be “ON” till the UFSBI functioning
normally (BIPR1 and BIPR2 picks up).
3.3 UFSBI Address Configuration Jumpers The Address Configuration jumpers are set in the Connector side of the motherboard. A pattern
of this jumper setting is shown below:
Figure 30: Pattern of Address Configuration Jumpers
The TX Address of one unit should correspond with the RX Address of other unit. The
same type of settings should not be used in the adjacent pair of units.
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3.4 Relay Rack & Signalling Relays
All the relays used as per the circuit diagram are of RDSO approved make. Relay
rack is housed inside the same UFSBI cabinet. The Electronic Fail Safe Timer (IRS: S
61/2000) is microcontroller based. Relays are as per nomenclature described below:
Table 7:Block Proving with Axle Counter : Relay disposition for Single Line
BIPR1
QN1
(8F/8B)
TIMER
(120EJ)
TGTXR
QN1
(8F/8B)
SHKR
QN1
(8F/8B)
TGTR
QL1
(11F/4B)
ASGNCR
QNA1
(8F/8B)
HSGNCR
QNA1
(8F/8B)
TCFR
QL1
(11F/4B)
FR1
QN1
(8F/8B)
BIPR2
QN1
(8F/8B)
LFR
4R-3-24
(3 CO)
TCFXR
QN1
(8F/8B)
TCFCR
QN1
(8F/8B)
TGTYR
QN1
(8F/8B)
ASGNCPR
QN1
(8F/8B)
TGTZR
QN1
(8F/8B)
BLR
QN1
(8F/8B)
FR2
QN1
(8F/8B)
CAR
QN1
(8F/8B)
BTSR
QN1
(8F/8B)
TAR2
QN1
(8F/8B)
TAR1
QNA1
(8F/8B)
HSBTPR
QNA1
(8F/8B)
HSATPR
QNA1
(8F/8B)
TGTPR
QN1
(8F/8B)
AZTR
QNA1
(8F/8B)
CNR
QN1
(8F/8B)
TGTNR
QN1
(8F/8B)
ASCR
QN1
(8F/8B)
12O
JPR
QN1
(8F/8B)
BPNR
QN1
(8F/8B)
TCFZR
QN1
(8F/8B)
Table 8:Block Proving with Axle Counter : Relay disposition for Double Line
BIPR1
QN1
(8F/8B)
TIMER
(120EJ)
TGTXR
QN1
(8F/8B)
TGTR
QL1
(11F/4B)
ASGNCR
QNA1
(8F/8B)
HSGNCR
QNA1
(8F/8B)
TCFR
QL1
(11F/4B)
FR1
QN1
(8F/8B)
BIPR2
QN1
(8F/8B)
LFR
4R-3-24
(3 CO)
TCFXR
QN1
(8F/8B)
TCFCR
QN1
(8F/8B)
TGTYR
QN1
(8F/8B)
ASGNCPR
QN1
(8F/8B)
TGTZR
QN1
(8F/8B)
BLR
QN1
(8F/8B)
FR2
QN1
(8F/8B)
CAR
QN1
(8F/8B)
BTSR
QN1
(8F/8B)
TAR2
QN1
(8F/8B)
TAR1
QNA1
(8F/8B)
HSBTPR
QNA1
(8F/8B)
HSATPR
QNA1
(8F/8B)
[D]AZTR
QNA1
(8F/8B)
CNR
QN1
(8F/8B)
TGTNR
QN1
(8F/8B)
ASCR
QN1
(8F/8B)
12O JPR
QN1
(8F/8B)
BPNR
QN1
(8F/8B)
[R]AZTR
QNA1
(8F/8B)
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Table 9: Relays Description
Sr.
No.
Relay
Type &
Normal Status
Description
1 TGTR
(SL &
DL)
QL1, 11F.4B
DROP
Train Going To Relay.
Operates to pick up on receipt of LINE CLEAR at train
sending station.
Normalizes, when station in advance sets to Line closed after
train arrival or cancellation of LINE CLEAR.
2 TCFR
(SL &
DL)
QL1, 11F.4B
DROP
Train Coming From Relay.
Operates to pick up on receipt of LINE CLEAR enquiry from
train sending station.
Normalizes after complete train arrival or cancellation of
LINE CLEAR.
3 ASCR
(SL &
DL)
QN1, 8F.8B
DROP
Advance Starter Signal Control Relay
Picks up, when LINE CLEAR is available and necessary
controls are reversed by SM.
Drops in any of the under-mentioned cases:
a) Entry of train in Block Section.
b) Withdrawal of any SM control.
4 TGTXR
(SL &
DL)
QN1,8F.8B
DROP
Train Going To code Relay.
Picks up at train sending station pressing of buttons for LINE
CLEAR enquiry. Drops when train sending station releases
buttons for LINE CLEAR enquiry or picking up of TGTR
which ever is earlier.
5 TCFXR
(SL &
DL)
QN1, 8F.8B
DROP
TRAIN COMING FROM code Receive Relay.
Picks up on receipt of LINE CLEAR enquiry from train
sending station.
Drops when station in rear releases buttons for LINE CLEAR
enquiry or TGTR pick up which ever is earlier.
6 TGTYR
(SL &
DL)
QN1, 8F.8B
DROP
Train Going To code Receive Relay.
Picks up on receipt of LINE CLEAR at train sending station
Drops in any of the under-mentioned cases:
a) Entry of train in Block Section.
b) Cancellation of Line Clear.
7 120 JPR
(SL &
DL)
QN1, 8F.8B
DROP
Timer mature repeater Relay.
Picks up on maturity of Timer for cancellation.
Drops when block status set to Line Closed.
8 BPNR
(SL &
DL)
QN1, 8F.8B
DROP
Bell Push button Relay.
Picks up on pressing of BELL push button with SM’s Key IN,
else drops.
9 TGTNR
(SL &
DL)
QN1, 8F.8B
DROP
Train Going To button Relay.
Picks up on pressing of TRAIN GOING TO push button else
drops.
10 CNR (SL
& DL)
QN1, 8F.8B
DROP
Cancel button Relay.
Picks up on pressing of CANCEL push button else drops.
11 FR1 (SL
& DL)
QN1, 8F.8B
DROP
Flash controller Relay No. 1.
Toggles when Cancellation commenced or any other
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Sr.
No.
Relay
Type &
Normal Status
Description
abnormal condition occur.
12 FR2 (SL
& DL)
QN1, 8F.8B
DROP
Flash controller Relay No. 2.
Toggles when Cancellation commenced or any other
abnormal condition occur.
13 TAR1
(SL &
DL)
QNA1, 8F.8B
DROP
Train Arrival First Relay.
Picks up when control on Reception Signal is Reverse and HS
AT occupied by train and HS BT clear.
Drops when AT clear with a delay.
14 TAR2
(SL &
DL)
QN1, 8F.8B
DROP
Train Arrival Second Relay.
Picks up when control on Reception Signal is Reverse and HS
AT is clear and HS BT occupied by train.
Drops when block status set to Line Closed.
15 CAR (SL
& DL)
QN1, 8F.8B
DROP
Cancel relay.
Picks up at Train receiving station on initiation of
cancellation, provided all controls pertaining to Advance
Starter and Reception Signal/Signals and signals controlled by
them are at Normal at both the stations.
Drops when cancellation matures and system goes to Line
Closed condition.
16 BTSR
(SL &
DL)
QN1, 8F.8B
PICK UP
Block Track Stick Relay.
Picks up when Block status is LINE CLOSED and Block
track is clear.
Drops in any of the under-mentioned cases:
a) Entry of train in Block Section.
b) Cancellation of Line Clear.
17 AZTR
(SL)
QNA1, 8F.8B
PICK UP
Block Section track Relay of dispatch line.
Drops in the under mentioned cases:
(a) Entry of train in block section, or
(b) Axle Counter failure
18 TGTZR
(SL &
DL)
QN1, 8F.8B
PICK UP
Advance starter signal normal checking repeater Relay.
Picks up to repeat Line Closed condition at train receiving
station after arrival of train or after a Line Clear cancellation
has been initiated, else drops.
19 120 EJ
(SL &
DL)
Electronic
Time delay
unit (Fail Safe)
Timer unit for cancellation time of 120 seconds.
20 HS
ATPR
(SL &
DL)
QNA1, 8F.8B
PICK UP
First track for direction proving repeater Relay.
Picks up when HSAT track circuit is vacant else drops.
21 HS
BTPR
(SL &
DL)
QNA1, 8F.8B
PICK UP
Second track for direction proving repeater Relay.
Picks up when HS BT track circuit is vacant else drops.
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Sr.
No.
Relay
Type &
Normal Status
Description
22 AS
GNCR
(SL &
DL)
QNA1, 8F.8B
PICK UP
Advance Starter Signal Normal Checking Relay.
Picks up when Advance Starter Signal and all its controls are
at Normal, else drops.
23 HS
GNCR
(SL &
DL)
QNA1, 8F.8B
PICK UP
Reception Signal Normal Checking Relay
Picks up when Reception signal/signals and all its controls are
at Normal, else drops.
24 TCFCR
(SL &
DL)
QN1, 8F.8B
PICK UP
Train Coming From Cancellation Relay.
Picks up at receiving station when CANCEL CO OP button is
pressed at sending station else drops.
25 TCFZR
(SL)
QN1, 8F.8B
PICK UP
Train Coming From Normal Proving Relay.
Picks up at receiving station when TCFR drops, else drops
26 TGTPR
(SL)
QN1, 8F.8B
PICK UP
Train Going To Normal Proving Relay.
Picks up at train sending station when TGTR drops, else
drops
27 SHKR
(SL)
QN1, 8F.8B
PICK UP
Shunt Key Indicating Relay
Picks up when EKT is “IN” & Shunt Release Key is “OUT”,
else drops
28 AS
GNCPR
(SL &
DL)
QN1, 8F.8B
PICK UP
Advance Starter Signal Normal checking (for other station)
Relay
Picks up when Advance Starter Signal and all its controls are
Normal at the other station, else drops.
29 BIPR1
(SL &
DL)
QN1, 8F.8B
TOGGLE
UFSBI health checks Relay.
30 BIPR2
(SL &
DL)
QN1, 8F.8B
TOGGLE
UFSBI health checks Relay.
31 BLR(SL
& DL)
QN1, 8F.8B
DROP
Bell Relay
Picks Up When Other Station Presses the Bell Button
32 [D]AZTR
(DL)
QNA1, 8F.8B
PICK UP
Block Section track Relay of dispatch line.
Drops in the under mentioned cases:
(a) Entry of train in block section, or
(b) Axle Counter failure
33 [R]AZTR
(DL)
QNA1, 8F.8B
PICK UP
Block Section track Relay Of Receive line.
Drops in the under mentioned cases:
(a) Entry of train in block section, or
(b) Axle Counter failure
Total relay requirement for SL (1 pair) : QN1 – 44, QNA1 – 12, QL1 – 4, Timer – 2
Total relay requirement for DL (1 pair) : QL1 – 38, QNA1 – 14, QL1 – 4, Timer - 2
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3.5 Block Proving with Axle counter –Single Line Block Panel
Table 10 : Single Line Block Panel Indications & Controls
Description Colour/Type
Line close indication Yellow
Train Coming from Indication Green
Train Going to Indication Green
TOL Indication Red
Cancel CO-OP Indication Yellow
Cancel Indication Yellow
SNK Indication (Advance & Home) Yellow
SNOEK Indication Yellow
LSS Indication Red
LSS Indication Green
Line Free Indication Green
Line Occupied Indication Red
SHK IN Indication Green
SHK OUT Indication Red
MUX/ UFSBI status OK Indication Green
Figure 31: BPAC Single Line Block Panel Figure 32: Block Panel front view
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Description Colour/Type
MUX/ UFSBI status Fail Indication Red
Communication Link Fail Indication Yellow
“Bell” Button Black
“Train Going To” Button Red
“ACKN” Button Black
“Cancel” Co-op Button Green
“Cancel” Button Yellow
“Shunt Release” Key --
SM’s Key --
Counter Cancellation
Call attention Buzzer Intermittent
Train Entry/ Exit buzzer Continuous
3.6 Block Proving with Axle counter –Double Line Block Panel
Figure 34: BPAC Double Line
Block Panel
Figure 33: Block Panel front view
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Table 11: Double Line Block Panel Indications & Controls
Description Colour
Line close indication (UP & DN) Yellow
Train Coming from Indication Green
Train Going to Indication Green
TOL Indication (UP & DN) Red
Cancel CO-OP Indication Yellow
Cancel Indication Yellow
SNK Indication (Advance & Home) Yellow
SNOEK Indication Yellow
LSS Indication Red
LSS Indication Green
Line Free Indication (UP & DN) Green
Line Occupied Indication (UP & DN) Red
MUX/ UFSBI status Ok Indication Green
MUX/ UFSBI status Fail Indication Red
Communication Link Fail Indication Yellow
“Bell” Button Black
“Train Going To” Button Red
“ACKN” Button (UP & DN) Black
“Cancel” Co-op Button Green
“Cancel” Button Yellow
“LCB” Key
SMs Key
Counter Cancellation
Call attention Buzzer Intermittent
Train Entry/ Exit buzzer (Sending) Continuous
Train Entry/ Exit buzzer (Sending) Intermittent
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3.7 Installation pre-requisites of UFSBI
Sl.
No. Description
Specified Value / Nos.
1 Environment Spacious, Clean, Dry, Well ventilated room preferably
with a fan/ exhaust fan.
2 Battery 24 V / 120 AH
3 Battery Charger i) Good Quality low ripple battery charger (Axle Counter
type) as per IRS: S-86/2000 or IPS module as per
RDSO/SPN/165/2004
Nominal Voltage – 24 V/10A (-10% to +20%) at
The Output voltage at following 2 conditions must be
within 21.6V to 28.8V:
Charger ON & UFSBI ON
Charger OFF (for 15 min) & UFSBI ON
ii) Separate Power Supply provided for each of BPAC,
SSDAC & Block Telephone.
4 Earthing Value of Earth resistance: < 2
5 Communication
Channel
4 wire Voice Channel on OFC (2400 bps , asynchronous)
S/N ratio: At least 20 dB
Max. TX Signal: -7 dBm to -5 dBm
Min. RX Level: -12 dBm to -14dBm
6 Communication Cable Jelly filled Quad Cable as per specn: IRS: TC 30-05.
Out of the 6 Quad or 4 Quad One Full Quad is to be
assigned for UFSBI. Do not make Four different wires of
different Quads for making a Quad to run the system.
Length of quad cable : as per requirement
The cable insulation (must be better than10 M when
tested with 500V Megger)
Loop resistance (should be less than 55 /Km)
Signal loss (should be less than 30 dB at 2.5 KHz)
The armour of the cable must be properly earthed.
The cable shall be terminated as stated in Annexure I
7 External Terminals
(Centre Link Open type )
All inputs from the Field and the Relay room shall be
terminated with proper identification in a separate location
to connect to the UFSBI terminals.
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8 V/F Tapping
Transformer
Characteristics impedance 470Ω in cable side and 600Ω
on UFSBI side. If the communication link between two
UFSBI is QUAD cable then only it is required.
9 Relays As per requirement
10 Signalling Cable (0.9
mm dia)
As per requirement
3.8 Improvements in UFSBI
To improve the system performance and reduce relays in case of Block Proving with axle counter
Electronic Block Logic Module (EBLM) has been introduced.
Avoiding Relay use in the BPAC application with EBLM
It stands for Electronic Block Logic Module.
It replaces the Block working logic (earlier done with Q-series relay) using EBLM Card vide
Cl. 3.8.1 of spec. IRS S:105/2012
Functionality achieved by using 2 x 2oo2 Fail-Safe Digital Electronic Hardware Logic gates
of CPLD.
Achieves the
functionality of both
Single and Double Line
Logics
Validated as per
CENELEC SIL-4
standard
Figure 35: Provision of EBLM in UFSBI application
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Advantages
Reduction of relay contact related failures.
Reduction in wiring.
Reduction in maintenance.
Greater availability with Hot Swap feature for any failed card in 2oo2 x 2
Enhanced Availability which is only achieved by parallel wiring of relay rack at site thereby
reducing time of installation.
3.9 Maintenance
Preventive maintenance
Power supply: regular check on power supply units such as battery banks, battery charger
and DC-DC converters is mandatory to prevent equipment faults and malfunctioning.
Relays: Special care and testing is required for those relays which are to be used after long
storage. No attempt is to be made to repair a relay. Always new relay should be used.
Maintenance of Communication Link
Telecom cable is to be protected from injury during other kinds of installation at its
vicinity.
If disconnection of cable is required, the c able terminal is to be refitted firmly.
The loss of signal due to defective cable is to be kept under check.
The display indication “33” indicates link failure. If the modem is found to be O.K, next to
be checked is the telecom c able.
Maintenance of Equipment
UFSBI unit will automatically trip-off if the Battery supply goes below 19.2V & above
28.8V DC. In case of repeated trip-off, both the DC supply level and the loading are
to be checked. A healthy UFSBI should not draw more than 1.8 Amp DC.
No attempt of “resetting” is to be made in case of supply impairment or link failure.
If a faulty UFSBI system is not brought ba ck to normal after “resetting” one must
check:
If there is any loosely fitted connector or improperly pressed PCB module.
Connecting leads inserted in Terminal.
The DC supply levels of the DC-DC converter.
For specific information on faults, refer “UFSBI Error Code List”.
Once a fault is found, the user should not attempt repairing at component level. The
impaired module / PCB needs to be replaced by a spare one.
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Table 12: Maintenance Schedule for UFSBI
Sr.
No.
Description ESM JE/SSE SSE
1
Check the Display in all 3 CPU's. It must display flashing 0
(ZERO). 0 (ZERO) indicates that the system is healthy &
functioning properly.
F M Q
2
Check the working voltage of UFSBI unit. It should not be
below 21.6 V & above 28.8 V DC. (ALTHOUGH IT CAN
WORK FROM 19.2V TO 31.2V)
F M Q
3
Check the various outputs of DC-DC converter and record all
the output supply voltages & output level should be as follows :
(i) 5V [+/- 3%] (ii) +12V [+/- 2%] (iii) -12V [+/- 2%] (iv)
24V [+/- 5%]
F M Q
4 Check the working current. A healthy UFSBI should not draw
more than 1.8 Amp DC. F M Q
5
Check the communication channel (OFC) loss with Telecom
staff & it should not be more than 30 db between two modems
of UFSBI.
- HY Y
6
Check the link parameters with Telecom staff
(i) For trans = -05 to -10 db (After removing cable side
connection)
(ii) For Receive = -12 to -22 db
- HY Y
7 Check the surge arrester module working properly with zero
voltage drop. F M Q
8
Check the link fail indication on reset box. This indication
(yellow) will normally flicker continuously meaning modem
receiving data from remote station modem. Link failure is
indicated by steady yellow.
F M Q
9 Check proper functioning of all push buttons, indications,
buzzers, counter & keys provided on ASM block panel. F M Q
10 Check that all the connectors & PCBs in the 6U rack are
inserted properly. F M Q
11 Check that all UFSBI relay contacts are clean and free from
pitting. F M Q
12 Check that all fuses provided are of proper capacity F M Q
13
Check that ripple voltages are not more than the specified
voltage which are as follows :-
i) 5 V DC not more than 40 mv
ii) +12 V DC not more than 30 mv
iii) -12 V DC not more than 30 mv
F M Q
14
i) If Single CPU fail indication appears on UFSBI alarm panel
then check all 3 CPUs cards. If anyone is not working, replace
defective CPU
ii) If redundant DC-DC convertor fail indication appears on
UFSBI alarm Panel then check the DC-DC convertor.
iii) If System failure indication (audio & visual) appears on
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Sr.
No.
Description ESM JE/SSE SSE
UFSBI alarm panel it would be ON till the UFSBI functioning
normally (till BIPR1& BIPR2 picks up) then reset the system. If
not reset then check error codes shown on the CPU & the LED
on the Output cards & the control & communication card & take
the actions recommended by manufacturer
15 Check that all the relays in UFSBI relay rack are properly
plugged and holding clips are intact. F M Q
16 Check that all cable terminations are tight and properly
connected. F M Q
17 Measure the earth resistance & it should be less than 2 ohm HY HY Y
18 Check the earthing wire & its connectivity for tightness F Q HY
19 Check address jumper of both mother cards of connected
UFSBI unit for their correspondence unit. - HY y
20 Check all the parameters of communication link along with
telecom staff. - HY Y
21 Check that proper gasket is provided in the UFSBI cubicle to
prevent the ingress of water dust, insects / pests etc. F M Q
22 Check that terminations of wires are with a unique number for
easy identification. - - Y
23 Wiring of relay rack is properly dressed and laced. - - Y
24 Ensure that ASM alarm panel indications are extended to
ESM's duty room & to the Data loggers. - - Y
25
Ensure that all potential free contact of UFSBI ( power supply
monitor , single CPU failure detection & single System failure
detection ) are wired in Data logger and extended to ESM's
duty room.
- - Y
3.10 Do’s & Don’ts
UFSBI system is to be operated or maintained only by trained persons.
No attempt is to be made to operate the equipment at Battery Voltage ranging
bellow 19.2V and above 28.8V DC.
Connectors or PCBs is to be plugged in or out after switching off the Power Supply.
“RESET” should not be applied in case of “Link Failure” or “Supply” Break Down.
Replacement of components or modules is to be done with spares
supplied/prescribed by the manufacturer.
While plugging in / out a PCB, c are is to be taken to avoid application of excessive
force.
Arbitrary grounding should not be done to any “common” terminal inside the
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equipment.
Relay testing should not be performed involving forced ‘pick-up’ or ‘drop’ while
the instrument is “ON”.
Standard restrictions against mishandling and opening of Block Instrument are
applicable also to UFSBI.
3.11 Error code list & recommended actions
In case of any fault, please follow the steps in the order as stated below:
(1). Note the codes shown on the CPU and the LED on the Output cards and the
Control & Communicat ion Card.
(2). It should also be recorded that under which condition the failure occurs, i.e.
whether it occurs repeatedly during a certain operation or is it intermittent in
nature.
(3). Perform a Power-On-Reset following the steps given in item Power- On-Reset under
para 3.2 (f) on page 44.
(4). In case the problem persists or recurs even after Power-On-Reset then follow the
troubleshooting given in Error code list Table
(5). During troubleshooting, whenever directed to check the effect of any change or
replacement of card, please perform Power-On-Reset as stated above.
Detailed error code list along with recommended remedial actions is given on next page
NOTE:
BEFORE TAKING OUT OR INSERTING A CARD, ALWAYS TURN-OFF THE POWER SUPPLY
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Table 13: Error code list & Recommended actions for Block Working With UFSBI &
DAC(Deltron) in case of Faults/ Errors Codes Failure Cause Recommended Actions
00
NORMAL MODE.
a) Flashing ‘00’ indicates that the system is
healthy & functioning properly.
b) If this code becomes steady in certain CPU
and an error code of ‘37’, ‘38’ or ‘39’
appears (according to the stuck CPU) on the
other CPU’s try “RESETTING” the system as
stated in item Resetting operation under para
3.2 (f) on page 45. b) In case the problem persists change the
CPU showing the steady code.
01 Output Latch 1 Read-back bad a) If the code is displayed simultaneously in
more than 1 CPU:
Then check if the CCC card is inserted
properly in the slot. If the problem still persists
replace the CCC card.
b) If the code comes on a single CPU:
i) First swap the faulty CPU with another slot.
ii) If the c ode shifts with the CPU to the new
slot, change the CPU c ard else change the
Output c ard
02
Output Latch 2 Read-back bad
05
UFSBI source address mismatch in
receive message
Check Address jumpers of both mother cards of
connected UFSBI units for their correspondence
refer page 33. If the fault is in one CPU card only
(unlikely) replace the CPU card.
06
UFSBI destination address
mismatch in receive message
Check Address jumpers of both mother cards of
connected UFSBI units for their correspondence
refer page 33. If the fault is in one CPU card only
(unlikely) replace the CPU card.
07
TXENABLE-A/B/C signal
produced by Inter-block data
selector logic in CCC not
matching with Inter-block
phase.
If this occurs in all the CPUs, change the CCC
Card. This can also happen when the UFSBI is
working in 2/2 mode and a further failure occurs.
This is not a serious problemand will go up on
“RESET”.
08 CPU failed to transmit a) Swap the CPU with another slot, if the
problem shifts with the CPU, and then change the
CPU card. b) Check the system, if the fault persists in the
same slot, change the CCC card.
0A Clear input to U9 low
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Codes Failure Cause Recommended Actions
0B
(Ob)
Ready to accept 'start'
command after POST
a) Press “BI-ON” button to start the system
within 30 sec. If the button is not pressed in time
then all the three CPUs will display “99”
code and go to shut down. To recover from
this problem the power supply is to be turned
off and the on. After the POST process all the
CPUs will display “ 0b ” again.
b) In case anyone CPU is showing steady 0B,
while others are running with 37, 38 or 39, try
“RESETTING” the system.
0C PS monitor test in progress in
POST
Wait for all CPUs to display “0b”.
10 IN1 complementary
failure (Ckt ref. W2 & W10)
Manually RESET the system. If the problem persists
then
i) In case the Error Code is appearing in 1 of the 3
CPUs,
a) Swap the Input Card 1 with another Input
Card 1 for Error Codes “10” to “1F”,
observe the outcome
b) Swap the Input Card 2 with another Input
Card 2 for Error Codes “20” to “2F”,
observe the outcome
11
IN2 complementary failure
(Ckt ref. W3 & W11)
12 IN3 complementary
failure (Ckt ref. W4 & W12)
13 IN4 complementary
failure (Ckt ref. W5 & W13)
14 IN5 complementary
failure (Ckt ref. W6 & W14)
In case (I)-a,b fails to solve the problem,
c) Change Input Card 1 for Error Codes
“10” to “ 1F” d) Change Input Card 2 for
Error Codes “20” to “ 2F”
Manually RESET the system and observe its
operation
ii) If the Error codes are appearing in at least 2 of
the 3 CPU’s simultaneously then check volta
ges at the respective relay conta cts and wa
go terminals as per circuit dia gram Sh. 6A and
6B of 12 of RDSO/S/32018 (atta ched in the
Manual) for the inputs IN1-IN7 (Wago W2-W8
) and inputs IN1’-IN7’ (Wago W10-W15) . For
other inputs like IN8, IN9- IN16 (Wago W9,
W64-W71) and IN8’, IN9’-IN16’ (Wa go W17,
W72-W79) check the loopin g as per circuit
referred above. Manually RESET the system and
observe its operation
iii) If the problem still persists check the flat
15 IN6 complementary
failure (Ckt ref. W7 & W15)
16 IN7 complementary
failure (Ckt ref. W8 & W16)
17 IN8 complementary
failure (Ckt ref. W9 & W17)
18 OUT1 complementary
failure (Ckt ref. W18
& W26)
19 OUT2 complementary
failure (Ckt ref. W19 & W27)
1A OUT3 complementary
failure (Ckt ref. W20 & W28)
1B OUT4 complementary
failure (Ckt ref. W21 & W29)
1C OUT5 complementary
failure (Ckt ref. W22
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Codes Failure Cause Recommended Actions & W30) cable connections between the wa go board
and motherboard as per di g. 2.1. Manually
RESET the system and observe its operation
iv) In c ase the error still persists, repla ce-
a) Input Card 1 for Error Codes
“10” to “1F” b) Input Card 2 for
Error Codes “20” to “2F”
Manually RESET the system and observe its
operation
1D OUT6 complementary
failure (Ckt ref. W23 & W31)
1E OUT7 complementary
failure (Ckt ref. W24
& W32)
'1 ' (1F) OUT8 complementary
failure (Ckt ref. W25
& W33)
20 IN9 complementary
failure (Ckt ref. W64 & W72)
Manually RESET the system following the same
process as stated in item no. ****. If the problem
persists then
In case the Error Code is appearing in 1 of the 3
CPU’s,
a) Swap the Input Card 1 with another Input
Card 1 for Error Codes “10” to “1F”,
observe the outcome
b) Swap the Input Card 2 with another Input
Card 2 for Error Codes “20” to “2F”,
observe the outcome.
In case (I)-a,b fails to solve the problem,
c) Change Input Card 1 for Error Codes
“10” to “ 1F” d) Change Input Card 2 for
Error Codes “20” to “ 2F”
Manually RESET the system and observe its
operation
If the Error codes are appearing in at least 2 of
the 3 CPU’s simultaneously then check
voltages at the respective relay contacts and
wago terminals as per circuit diagram Sh. 6A
and 6B of 12 of RDSO/S/32018 (attached in the
Manual) for the inputs. Manually RESET the
system and observe its operation
i) If the problem still persists check the
flat cable connections between the wago
board and motherboard as per dig. 2.1.
Manually RESET the system and observe its
operation
ii)In case the error still persists, replace-
a) Input Card 1 for Error Codes
“10” to “1F” b) Input Card 2 for
21 IN10 complementary
failure (Ckt ref. W65 & W73)
22 IN11 complementary
failure (Ckt ref. W66 & W74)
23 IN12 complementary
failure (Ckt ref.
W67 & W75)
24 IN13 complementary
failure (Ckt ref.
W68 & W76)
25 IN14 complementary
failure (Ckt ref. W69 & W77)
26 IN15 complementary
failure (Ckt ref. W70 & W78)
27 IN16 complementary
failure (Ckt ref. W71 & W79)
28 OUT9 complementary
failure (Ckt ref. W80 & W88)
29 OUT10 complementary
failure (Ckt ref. W81 & W89)
2A OUT11 complementary
failure (Ckt ref. W82 & W90)
2B OUT12 complementary
failure (Ckt ref. W83 & W91)
2C OUT13 complementary
failure (Ckt ref. W84 & W92)
2D OUT14 complementary
failure (Ckt ref. W85 & W93)
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Codes Failure Cause Recommended Actions
2E OUT15 complementary
failure (Ckt ref. W86 & W94)
Error Codes “20” to “2F”
Manually RESET the system and observe its
operation '2 ' (2F)
OUT16 complementary
failure (Ckt ref. W87 & W95)
30 BIPR1 complementary failure Take similar steps as in the case for other relays.
31 BIPR2com plementary failure
33 Link Fail (SSB mode) If the error code appears in any one of the CPU card: i) Swap it with other slot. If the error shifts
with the card Change the CPU c ard.
If the error code appears in any one of the CPU
card:
i) Check the communication link from crone box,
terminal, to modem RJ11 jack. If external
communication link
is confirmed OK change the CCC Card.
ii) If the problem still persists, Switch off the
Modem, and then restart it after 60s.
iii) If the problem still persists perform Power-On
Reset of the System and observe its operation
34
RSSB mode This mode indicates that the UFSBI on the other side
is not receiving data. Try by checking the channel,
modem and communication in that order as stated
for error code ‘33’. Ensure that the other side
System is working and showing error
code ‘33’ only.
37 CPU A bad i) Change corresponding CPU Cards in which the
static error code is showing. Manually RESET the
system and observe its operation.
ii) If this indication is on all the CPU cards then
change the CCC (Communication) Card. Manually
RESET the system and
observe its operation
38 CPU B bad
39 CPU C bad
3A Inter-pro cessor c ommunic ation channel failure (common mode)
If occurs in all the CPUs, change the communication
card. Manually RESET the system and observe its
operation
40 OUT1 forced
pickup [LFR Non-
Manually RESET the system following the same
process as stated in item no. II.15. If the problem
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Codes Failure Cause Recommended Actions
vital relay] persists then For codes “40” to “4F” check the
corresponding relays as follows
i) Check if the relay is properly plugged and the
retaining clip is place correctly. Also ensure
that all its receptacles are rightly placed and
locked in the plug board. Manually RESET
the system and observe its operation.
ii) Check the corresponding relays to see if the
front contacts somehow got voltage or ba ck
contacts got broken or if the relay has got
picked up out of sequence by some stray feed
given externally. Manually RESET the
system and observe its operation.
iii) Check the wago terminals for unwanted
shorting between terminals other than those
showed in circuit. In case any such short
circuits found please remove the same.
Manually RESET the system and observe
its operation.
41 OUT2 forced pickup
[TCFXR vital relay]
42 OUT3 forced pickup
[TCFCR vital relay]
43 OUT4 forced pickup
[TGTYR vital relay]
44 OUT5 forced pickup
[ASGNCPR vital relay]
45 OUT6 forced pickup
[TGTZR vital relay]
46 OUT7 forced pickup
[BLR vital relay]
47 OUT8 forced pickup
48 OUT9 forced pickup Manually RESET the system following the same
process as stated in item no. II.15. If the problem
persists then For codes “40” to “4F” check the
corresp onding relays as follows
iv) Check if the relay is properly plugged and the
retaining clip is place corre ctly. Also ensure
that all its recepta cles are rightly placed and
locked in the plug board. Manually RESET
the system and observe its operation.
v) Check the corresp onding relays to see if the
front conta cts somehow got voltage or ba ck
conta cts got broken or if the relay has got
picked up out of sequence by some stray feed
given externally.
Manually RESET the system and observe
its operation.
vi) Check the wa go terminals for unwanted
shortin g between terminals other than those
showed in circuit. In case any such short
49 OUT10 forced pickup
4A OUT11 forced pickup
4B OUT12 forced pickup
4C OUT13 forced pickup
4D OUT14 forced pickup
4E OUT15 forced pickup
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Codes Failure Cause Recommended Actions
4F OUT16 forced pickup circuits found please remove the same.
Manually RESET the system and observe its
operation.
50 IN1 jitter Jittery contacts of the relay may occur when a
particular relay does not stabilize, i.e. it ‘chatters’.
This may happen due to low coil voltage, faulty
receptacles (coil or contacts ) or improper plugging
of the relays without retaining clips.
51 IN2 jitter
52 IN3 jitter
53 IN4 jitter
54 IN5 jitter The following actions are suggested: a) Check the setting in the plug board for proper
plugging
b) Check firmness of the contacts and all
connections from output connector coil (for
output relays).
c) Check coil and contact voltage for each input
paths from the circuit. Try removing and
re-plugging each relay in the circuit path
separately ensuring that it is fitted firmly to the
plug board and the retaining clip is in the
right place
d) For output relays, try to measure the coil voltage
at the corresponding wago terminal as well as
the relay coil R1- R2. Note that this voltage is
available for less than ½ sec, so using an
analog voltmeter is preferred. It is advisable to
try by changing the corresponding output card.
Manually RESET the system and observe its
operation.
55 IN6 jitter
56 IN7 jitter
57 IN8 jitter
58 OUT1 jitter [LFR Non-vital
relay]
59 OUT2 jitter [TCFXR vital relay]
5A OUT3 jitter [TCFCR vital relay]
5B OUT4 jitter [TGTYR vital relay]
5C OUT5 jitter [ASGNCPR vital
relay]
5D OUT6 jitter [TGTZR vital relay]
5E OUT7 jitter [BLR vital relay]
5F OUT8 jitter
60 IN9 jitter
61 IN10 jitter Jittery contacts of the relay may occur when a
particular relay does not stabilize, i.e. it ‘chatters’.
This may happen due to low coil voltage, faulty
receptacles (coil or contacts ) or improper plugging
of the relays without retaining clips.
62 IN11 jitter
63 IN12 jitter
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Codes Failure Cause Recommended Actions
64 IN13 jitter The following actions are suggested:
a) Check the setting in the plug board for proper
plugging
b) Check firmness of the contacts and all
connections from output connector coil (for
output relays).
c) Check coil and contact voltage for each input
paths from the circuit. Try removing and
re-plugging each relay in the circuit path
separately ensuring that it is fitted firmly to the
plug board and the retaining clip is in the
right place
d) For output relays, try to measure the coil voltage
at the corresponding wago terminal as well as
the relay coil R1- R2. Note that this voltage is
available for less than ½ sec, so using an
analog voltmeter is preferred. It is advisable to
try by changing the corresponding output card.
Manually RESET the system and observe its
operation.
65 IN14 jitter
66 IN15 jitter
67 IN16 jitter
68 OUT9 jitter
69 OUT10 jitter
6A OUT11 jitter
6B OUT12 jitter
6C OUT13 jitter
6D OUT14 jitter
6E OUT15 jitter
6F OUT16 jitter
70 BIPR1 jitter
71 BIPR2 jitter
73 Shut down relay phase generator
failure (phase not changing
within 30 minutes)
If this indication is on a single CPU card change
the CPU card.
If all the 3 CPUs show this code then change the
communication c ard.
75 Timer2 input bad RESET the system by pressing RESET button and
then BI-OK button in a sequential manner. If
problem persists chan ge corresponding CPU c ard. 78 Data bus check failed
79 EPROM Checksum failed
7A BIPR1 input to GAL stuck at low
RESET the system by pressing RESET button and
then BI-OK button in a sequential manner. If
problem persists change corresponding CPU card.
If the problem still remains change CCC Card.
When all CPUs show the code, change CCC
7B
BIPR2 input to GAL stuck at
low
7C BIPR1 command output not
matching with shutdown
relay phase.
RESET the system by pressing RESET button and then
BI-OK button in a sequential manner. If problem
persists change corresponding CPU c ard. 7D BIPR1 command output not
matching with shutdown
relay phase.
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Relay forced/ fail to pick up failure codes of UFSBI
Failure
Code
Relay Name Contact No.
to be checked
Corresponding
WAGO No.
80 OUT1 R1, R2 W47, W48
81 OUT2 R1, R2 W49,W50
82 OUT3 R1, R2 W51, W52
83 OUT4 R1, R2 W53, W54
84 OUT5 R1, R2 W55, W56
85 OUT6 R1, R2 W57, W58
86 OUT7 R1, R2 W59, W60
87 OUT8 R1, R2 W61, W62
88 OUT 9 R1, R2 W102, W103
89 OUT10 R1, R2 W104, W105
8A OUT11 R1, R2 W106, W107
8b OUT12 R1, R2 W108, W109
8C OUT13 R1, R2 W110,W 111
8d OUT14 R1, R2 W112, W113
8E OUT15 R1, R2 W114, W115
8 OUT16 R1, R2 W116, W117
Communication link failures codes of UFSBI
For this failure the Error cod e would be “33” / “34”
First check the +12V & -12V power supply from DC-DC converter is present or not.
Then Check all the physical connection from Modem To OFC Primary Mux/ Quad Cable.
Put the Loop/ Normal Switch which is placed in the back MODEM to the Loop position and
check if all the CPU’s are showing “06” or not.
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(a). If all the CPU’s are showing “06” then the digital part of Modem and CC card of
UFSBI is OK. Check the communication link for this failure. To check this
communication line first check the Modem TX power which has to be in the range of -
7dB to - 12dB. Then check the receive power at other end. The Loss should not be
more than 30dB in the line.
(b). If the system does not show “06” change the CC Card first and see the result. If this
does not solve the problem change the corresponding Modem.
Please refer Flowchart on page 75 Figure 36
Cards or DC-DC Converter failure of UFSBI
Card failure For any Hard failure i.e. components/ IC’s failure in Cards the corresponding codes will be shown in
the CPU cards. Power OFF the system then Power On the system again. If it does not solve the
problem change the corresponding card. The main reason of this hard type of failure are Improper
Battery Charger, Battery Charger without Battery bank, Improper earthing, Direct Lightning. So
before inserting a new card ensures these are proper.
This system is 2/3 Active Redundant system so if any one CPU card fails the system can continue to
work without any hindrance in block working operation but Single CPU failure alarm will come to the
SM room so that maintainer can attend the system and rectify the fault, as a preventive measure.
DC-DC converter failure DC-DC converter used in UFSBI is Dual redundant hot standby type. So any of the module fails
system can work as each module is capable of taking full load of UFSBI on it’s rated voltage. Like
CPU, redundant DC-DC converter failure indication is also extended to the SM’s room.
The Following Cards has to be replaced during the following error codes showing in all the 3 CPUs:
.
Error Code Card To be Replaced
01, 02, 05, 07, 08, 0A, 3A, 73, 7A, 7B, A0,
A1, A2,A3,A4, A5,A6,A7,A8, B5,B6,
B7,B8,B9, BA, BD, C1, C6, C9, CA, E1,
E2, E8,E9, EB, EC, ED, FA, FB, FD
CCC
93 O/P 1 then O/P 2
95, AA O/P 1
96, AB O/P 2
If these errors are shown in only one CPU change the corresponding CPU card.
Please note that before changing any of the card perform at least TWO Power-On-Resets to
ensure that card is permanently damaged not a temporary hang.
For Detailed failure Code Refer Failure Code List.
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Figure 36 :Flowchart for Rectification of Communication link failure Deltron make UFSBI
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Figure 37: Block Proving with Single Section Digital Axle Counter & UFSBI for Single Line
System Components
The System comprises of the following items as per IRS S:105/2012
BLOCK PANEL (As per drawing no. RDSO/S 32019) (1 PAIR)
UFSBI (As per IRS S:104/2012) (1 PAIR)
RELAY RACK (As per drawing no. RDSO/S 32020) (1 PAIR)
Block Telephone (As per RDSO/SPN/191/2006) (1 PAIR)
Single Section Digital Axle Counter (As per RDSO/SPN/177/2003) (1 PAIR)
Typically 10-20 Km
UFSBI - 1
Block Interlocking
Circuit w ith
Q-type relays
(designed by RDSO)
2/3 Fail-Safe Digital
Mux - UFSBI ( as per
RDSO/SPN/147/97)
Push Button type
Block Operating
Panel (designed
by RDSO )
Status of Vital
Relay (through
potential
f ree contacts)
AXLE
SENSOREVALUATOR
SSDAC - 1
4 4
UFSBI - 2
Block Interlocking
Circuit w ith
Q-type relays
(designed by RDSO )
2/3 Fail-Safe Digital
Mux - UFSBI ( as per
RDSO/SPN/147/97)
Push Button type
Block Operating
Panel (designed by
RDSO )
Status of Vital
Relay (through
potential
f ree contacts)
AXLE
SENSOREVALUATOR
SSDAC - 2
44
STATION - A STATION - BBLOCK SECTION
Block Proving with single section Digital Axle Counter & UFSBI
Station Interlocking
System (MACL, RRI,
PI, SSI
Station Interlocking
System (MACL, RRI,
PI, SSI
1 Quad Cable or 4 WireVoice Channel on OFC
1/2 Quad Cable or2 Wire Voice
Channel on OFCBlock Panel - 1 Block Panel - 2
Relay
interlocking ckt.-2Relay
Interlocking ckt.-11/2 Quad Cable or 2 Wire Voice
Channel on OFC
Block Telephone Block Telephone
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CAMTECH/S/PROJ/2020-21/SP11/1.0 80
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System Components
The System comprises of the following items as per IRS S:105/2012
BLOCK PANEL (As per drawing no. RDSO/S 32017) (1 PAIR)
UFSBI (As per IRS S:104/2012) (1 PAIR)
RELAY RACK (As per drawing no. RDSO/S 32018) (1 PAIR)
Block Telephone (As per RDSO/SPN/191/2006) (1 PAIR)
Single Section Digital Axle Counter (As per RDSO/SPN/177/2003) (2 PAIRS)
Table of Contents
Typically 10-20 Km
UFSBI - 1
Block Interlocking
Circuit w ith
Q-type relays
(designed by RDSO)
2/3 Fail-Safe Digital
Mux - UFSBI ( as per
RDSO/SPN/147/97)
Push Button type
Block Operating
Panel (designed
by RDSO )
Status of Vital Relay
for UP & DN Line
(through seperate
potential
f ree contacts)
AXLE
SENSOREVALUATOR
SSDAC - 1 (DN)
4 4
UFSBI - 2
Block Interlocking
Circuit w ith
Q-type relays
(designed by RDSO )
2/3 Fail-Safe Digital
Mux - UFSBI ( as per
RDSO/SPN/147/97)
Push Button type
Block Operating
Panel (designed
by RDSO )
Status of Vital Relay for UP &
DN Line (through seperate
potential f ree contacts)
AXLE
SENSOREVALUATOR
SSDAC - 2 (DN)
44
STATION - A STATION - BBLOCK SECTION
Station Interlocking
System (MACL, RRI,
PI, SSI
Station Interlocking
System (MACL, RRI,
PI, SSI
1 Quad Cable or 4 WireVoice Channel on OFC
1/2 Quad Cable or2 Wire Voice
Channel on OFCBlock Panel - 1
Relay
Interlocking ckt.-1
Typically 10-20 Km
AXLE
SENSOREVALUATOR
SSDAC - 1 (UP)
4 4
AXLE
SENSOREVALUATOR
SSDAC - 2 (UP)
44
STATION - A STATION - BBLOCK SECTION
1/2 Quad Cable or2 Wire Voice Channel
on OFC
1/2 Quad Cable or 2 Wire VoiceChannel on OFC
Block Telephone Block Telephone
Relay
Interlocking ckt.-2
Block Panel - 2
Block Proving with single section Digital Axle Counter & UFSBI
Figure 38 :Block Proving with Single Section Digital Axle Counter & UFSBI for Double Line
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Annexure V
Pre-commissioning Check List for Deltron BPAC using UFSBI & SSDAC Name and Type of Equipment: BPAC using Universal Fail Safe Block
Interface (UFSBI) and SSDAC
Specific ation No: IRS:S-105/2012
Name and Address of
manufacturer/supplier:
M/s Deltron Equipment & Systems
Pvt.Ltd. 26, Convent Road, Kolkata-700 014
Serial number of the equipment:
Station Name:
Division/Zonal Railway:
Software checksum:
‘B7 0E’
UFSBI working on:
OFC / Microwave / Quad Cable
DATE OF INSTALLATION:
DATE OF COMMISSIONING:
DATE OF INSPECTION:
Note:
System should be installed and commissioned by authorized technical staff of manufacturer only.
Commissioning of Universal Fail Safe Block Interface (UFSBI) 4 has to be done by OEM as per
RDSO approved pre-commissioning checklist No. SIG 0611 Ver.0.
OEM shall certify that verification of system installation has been completed by OEM and
all necessary arrangements meet the required standards of engineering for trouble free
working of installed system.
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Sl.
No.
Description Specified Value / nos. Obtained Value / Nos. (if any)
Ok/ Not Ok
1. Environment Spacious, Clean, Dry, Well ventilated room
preferably with a fan/ exhaust fan.
Space for SM’s panel at SM room – 610 x
400 x 465 Cubic mm.
Space for UFSBI alarm panel at SM’s room
- 265 x 170 x 105 Cubic mm
Space for UFSBI cubicle at Relay room -
1430 x 710 x 480 Cubic mm
2. Battery 2 x 12 V / 120 AH
3. Battery Charger Good Quality low ripple battery charger
(Axle Counter type) as per IRS: S-
86/2000 or IPS module as per
RDSO/SPN/165/2004
Nominal Voltage – 24 V/ 10A (-10% to
+20%) at
The Output voltage at following 2
conditions must be within 21.6V to 28.8V:
V
Charger ON & UFSBI ON
Charger OFF (for 15 min) & UFSBI ON V
(Note: The output voltage must be measured
at the terminals DC-DC Converter Input)
4. Earthing Separate earthing should be provided for UFSBI cubicle. Value of Earth resistance: < 1 ohms
5. Lightning
Arrestor
Good lightning protection system with
proper connection with earth provided
from any of the following firms:-
M/s Phoenix Conta cts or M/s Cape Electric
Corpn. or M/s MCML Systems Pvt. Ltd. or
M/s Adhunik Power Systems or OBO
Bettermann India (P) Ltd. Or CITEL or
ERICO.
6. Communication
Channel
4 wire Voice Channel on OFC (2400
asynchronous)
Max. Tx Signal: -7 dBm to -5 dBm
Min. Rx. Level: -12 dBm to-14dBm
bps ,
dBm
dBm
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Sl.
No
Description Specified
Value/
nos.
Obtained
Value/ Nos. (if any)
Ok/
Not Ok
7.
Communication
Jelly filled Quad Cable as per specn: IRS: TC
30-05 Length of quad cable: The c able insulation (must be better than
10 M Ohm when tested with 500V
Megger): Loop resistance (should be less than 55
Ohm/Km): Signal loss (should be less than 30 dB at
2.5 KHz): Near End Cross talk (should be better
than 55dB/Km at a frequency of 150
KHz):
Far End Cross talk (should be better
than 67.8 dB/Km at a frequency of 150
KHz)
The armor of the cable must be
properly earthed. The cable shall be terminated
as stated in Annexure A
Cable
Km
MOhm
Ohm
dB
dB
dB
8. External
Terminals
(Centre Link
Open type )
All inputs from the Field, Block
Instruments and the Relay room shall be
terminated with proper identification in a
separate location to connect to the UFSBI
terminals
9. 1 x 60C indoor For interconnection between SM-
Panel to BPAC cubicle.
Sq.mm diameter Length is as per distance between
SM panel at SM room to BPAC
cable cubicle. Out of 60 core 48 cores are
used and rest are spare
10. 1 x 40C indoor
cable of 0.9
Sq.mm diameter
cable
For interconnection between relay rack to
BPAC cubicle. Length is as per
distance between CTR at relay room to
BPAC cubicle.
11 Copper Wire of
2.5 Sq.mm dia
(Red & Black in
colour)
For provision of power supply for BPAC.
Length is as per distance between
battery charger or IPS room to BPAC to
cubicle.
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12. V/ F tapping
transformer
For the system which has to run on
copper c able in RE area V/F tapping
transformer is required as per IRS:TC 76-
2000
Characteristics impedance of the V/F
transformer is 600 on primary side (i.e.
BPAC MODEM side) and Quad cable
impedance on secondary side (normally
470).
13. Relays For One Block section number of relays
are given below
For Double Line: QN1(8F/8B) – 38,
QNA1(8F/8B)
– 14, QL1 (11F/4B) – 4, Electronic fail safe
Timer- 2
Signal checking
Check the Block Instruments Indication for the Following condition: Sl.
No.
Test Observed result (OK / NOT OK)
STATION “ A” STATION “B”
01. SM’s Key Control on Line Clear
02. Refusal of Line Clear enquiry through LCB Key Control
03. Normal Train Movement ( For at least 2 trains from both
direction)
04. Cancella tion of Line Clear (From Both side) and check Cancel Counter
05. Advance Starter should not go to Green (taken OFF) without
Line Clear
06. Advance Starter should not go to Green (taken OFF) if
UFSBI fails after taking of Line Clea r
07. Advance Starter should not go to Green (taken OFF) after
Train enters block section
08. Advance Starter should not go to Green (taken OFF) after
Train clears the block section but the Block instrument
does not go to Line Closed condition due to any
reason. The advance starter should come only after
Block Instrument goes to First Line Closed then a fresh
Line Clear is taken. (One train One Slot condition)
09. Advance Starter should not Fly Back from Green to Red
(OFF - ON) due to UFSBI System failure or UFSBI Link
failure.
10. Cancel CO-OP cannot be extended from train
sending station unless and until Advance starter signal
and it’s all c ontrols are normal.
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Unit details.
(A) Input Cards. : 6 nos.
1. Sl. no. : Deltron /UFSBI / Input ……………….
2. Sl. no. : Deltron /UFSBI / Input ……………….
3. Sl. no. : Deltron /UFSBI / Input ……………….
4. Sl. no. : Deltron /UFSBI / Input ……………….
5. Sl. no. : Deltron /UFSBI / Input ……………….
6. Sl. no. : Deltron /UFSBI / Input ……………….
(B) CPU Cards. : 3 nos.
1. Sl. no. : Deltron/UFSBI/CPU ……………….
2. Sl. no. : Deltron /UFSBI /CPU ……………….
3. Sl. no. : Deltron /UFSBI /CPU ……………….
(C) Output Cards. : 2 nos.
1. Sl. no. : Deltron/UFSBI / Output……………….
2. Sl. no. : Deltron /UFSBI / Output……………….
(D) Com. & Con. Card. : 1 no.
1. Sl. no. : Deltron/UFSBI/ CCC……………….
(E) Reset Box. : 1 no.
1. Sl. no. : Deltron/UFSBI / RSTBX……………….
(F) Modem. : 1 no.
1. Sl. no. : Deltron/ UFSBI/ Modem/P……………….
Settings : LOOP ANS
1 2
NORMAL ORG
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(G) Relays. : To be supplied by
Railways as per
system Requirement.
(H) Power supply. : 1 no (with hot
standby) 1. Sl. no. :
……………………………
(I) Personality module. : 1 set.
1. PSM card. : 1 no.
Sl no. : Deltron/UFSBI / PSM……………….
2. IFU TX : 1 no.
Sl no. : …………………………………
3. IFU RX : 1 no..
Sl no. : …………………………………
4. IFU Driver : 1 no.
Sl no. : …………………………………
(J) Initial Reset Count. : Commissioning Reset Count. :
(K) Address Pairs. TX RX
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
. . . . . .
Table of Contents
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References
IRS Specification No. IRS:S104-2012 for Universal fail safe Block interface
(UFSBI)
IRS Specification No. IRS:S105 Block Proving with Axle Counter using
UFSBI/MUX combiner.
User's Manual for Block Proving with Axle Counter using UFSBI -M/s Deltron
Equipment & Systems Pvt. Ltd., Kolkata
User's Manual - Block Proving by Axle Counter(For Single Line with UFSBI) -
M/s Webfil Ltd., Kolkata
User's Manual - Block Proving by Axle Counter(For Double Line with UFSBI) -
M/s Webfil Ltd., Kolkata
Quality Policy
“We at RDSO Lucknow are committed to maintain and
update transparent standards of services to develop safe,
modern and cost effective railway technology complying with
statutory and regulatory requirements, through excellence in
research, designs and standards by setting quality
objectives, commitment to satisfy applicable requirements
and continual improvements of the quality management
system to cater to growing needs, demand and expectations
of passenger and freight traffic on the railways through
periodic review of quality management systems to achieve
continual improvement and customer appreciation. It is
communicated and applied within the organization and
making it available to all the relevant interested parties.”
INDIAN RAILWAYS Centre for Advanced Maintenance Technology Maharajpur, Gwalior (M.P.) Pin Code – 474 005