Delhi Metro Rail CorporationTraining InstituteISO 9001:2008ASCV

ISO 9001:2008

GeneralThe ASCV, inside the CBI, is the static interlocking system that controls and checks all the field equipment for each station. The ASCV in its hardware form is a computer, located in SER at an IXL station.Typically it has three cubicles namely, SLE-N, SLE-R and SSW i.e., sub-system for logic elaboration Normal, Reverse and sub system for communication.

ISO 9001:2008

The cubicle structureAll of the ASCV subsystems are housed in standard cubicles:Metal boxes containing electronic boards: 565x800x2013mm (WxDxH).

ISO 9001:2008

Power supply requirementsASCV main power supply:230 Vac10% single phase380 Vac10% three-phasePower supply has to be guaranteed from an uninterruptible power sourceA Power distribution cubicle PDC generates the voltages required by the system with relative protection switches and breakers

ISO 9001:2008

ASCV Basic Design

ISO 9001:2008

SLE STATUS(Subsystem for Logic Elaboration)ASCV contain two SLE, one is named SLE/N (Normal) ,the other one named SLE/R (Reserve). During operation both SLE can in one of the following statusIn Service : The SLE which is currently working Standby : The SLE which is not in service but which can enter to service when requestNon active : SLE may be off , fault, or in maintenance or momentarily disturbed

Inside SLE there are two or more units:1 ULE (Unit for Logic & Elaboration )1 to 3 UVIO (Unit for Vital Input Output)

ISO 9001:2008

ULE basic modulesThe ULE unit includes the following basic modules:MAIN

RECHECK

VCOM

NVIO

EVPD

ISO 9001:2008

Main ModuleThe MAIN module is made up of the following types of cards:ECPU3 + ESYMODEIOINTWhile the ECPU3 + ESYMOD board is always one in the ULE rack, the number of EIOINT board can be 1 or 2, depending on the amount of vital inputs to acquire.

ISO 9001:2008

Main module identificationBoards belonging to the main module are always placed in the leftmost positions of the rack.EIOINT boards are placed in slots 1 (and 2)ECPU3/ESYMOD board is placed in slots 3 and 4

ISO 9001:2008

Main Module:

ECPU3 + ESYMOD card: controls vital input reading using the EIOINT card; performs all information collection and distribution operations from and to the other functioning modules, processes the Boolean equations, controls non-vital synchronisation with the other ULE. EIOINT card: implements hardware mechanisms used to securely check its own identity and correct access to vital input cards. Inserts and reads codewords on vital input modules, converts signal electric levels ensuring a reliable connection from a distance with the EIOBUF card, that is to say the UVIO unit.

ELOB

iSBX

MAIN

ELOB

RCHK

ELOB

VCOM

EVPD

ULE

SYSTEM BUS

NVIO

ECPU3

ESYMOD

EIOINT

ECPU2

EIOINT

EVPD

ECPU1

DMS

EHICOM

E32OUT

EHICOM

N/R

ATC

EHICOM

Connection to the

FSFB NET NED(for SKG only)

Connection to the

ATC NET

Vital link to the

other ULE

Connection to the

DMS system

Vital Power

Enabling signal

to UVPS

Connection to

the vital output

board (UVIO)

Connection to

the vital input

board (UVIO)

Main cycle

sychronizing

signal

Connection to the local

non vital I/O

Connection to the

diagnostic system

NET 1

EHICOM

Connection to the

FSFB NET NEL

NET 2

EHICOM

Connection to the UCS

for ELH relays status

Non vital link to the

other ULE

Autoinclusion

from EOVCM

E32INP

SLE

ALIM_5_12

5Vcc to

UVIO rack

220 Vca

from PDC

Figure 3 : Main and secondary station ULE details.

ISO 9001:2008

Recheck ModuleThe RCHK module is made up of the following types of cards: ECPU2EIOINT.

ISO 9001:2008

Recheck module IdentificationBoards belonging to the Recheck module are always placed immediately to the right of the main module.EIOINT board is placed in slot 5ECPU2 board is placed in slot 6For Maximum configurations, second recheck modules is in slots 7 and 8

ISO 9001:2008

Recheck ModuleIn the RCHK module, the functions are divided amongst the cards as follows:ECPU2 card: manages codeword reading and writing operations on the EIOINT card for controlling vital outputs and SLE subsystem ON switch, for vital output state readouts and reading SLE identification vital information. Checks that the command received matches vital output state. EIOINT card: implements hardware mechanisms used to securely check its own identity and correct access to vital output cards. Inserts and reads codewords on vital output modules, converts signal electric levels ensuring a reliable connection from a distance with the EIOBUF card, that is to say the UVIO rack containing the vital outputs.

ELOB

iSBX

MAIN

ELOB

RCHK

ELOB

VCOM

EVPD

ULE

SYSTEM BUS

NVIO

ECPU3

ESYMOD

EIOINT

ECPU2

EIOINT

EVPD

ECPU1

DMS

EHICOM

E32OUT

EHICOM

N/R

ATC

EHICOM

Connection to the

FSFB NET NED(for SKG only)

Connection to the

ATC NET

Vital link to the

other ULE

Connection to the

DMS system

Vital Power

Enabling signal

to UVPS

Connection to

the vital output

board (UVIO)

Connection to

the vital input

board (UVIO)

Main cycle

sychronizing

signal

Connection to the local

non vital I/O

Connection to the

diagnostic system

NET 1

EHICOM

Connection to the

FSFB NET NEL

NET 2

EHICOM

Connection to the UCS

for ELH relays status

Non vital link to the

other ULE

Autoinclusion

from EOVCM

E32INP

SLE

ALIM_5_12

5Vcc to

UVIO rack

220 Vca

from PDC

Figure 3 : Main and secondary station ULE details.

ISO 9001:2008

Vital Communication ModuleThe VCOM module is made up of the following cards: EHICOM N/R, EHICOM ASCV NET cardsOther EHICOM NET cards for other vital nets

ISO 9001:2008

Vital Communication ModuleIn the VCOM module, the functions are divided amongst the cards as follows:EHICOM NET 1 card: this card controls communications to the 1st FSFB network using the optic modems contained in the UCS unit. The card controls and checks communication up to the excluded application level.EHICOM NET 2 card: carries out the same functions as the EHICOM NET 1 card and is connected to the 2nd FSFB network. 12

ELOB

iSBX

MAIN

ELOB

RCHK

ELOB

VCOM

EVPD

ULE

SYSTEM BUS

NVIO

ECPU3

ESYMOD

EIOINT

ECPU2

EIOINT

EVPD

ECPU1

DMS

EHICOM

E32OUT

EHICOM

N/R

ATC

EHICOM

Connection to the

FSFB NET NED(for SKG only)

Connection to the

ATC NET

Vital link to the

other ULE

Connection to the

DMS system

Vital Power

Enabling signal

to UVPS

Connection to

the vital output

board (UVIO)

Connection to

the vital input

board (UVIO)

Main cycle

sychronizing

signal

Connection to the local

non vital I/O

Connection to the

diagnostic system

NET 1

EHICOM

Connection to the

FSFB NET NEL

NET 2

EHICOM

Connection to the UCS

for ELH relays status

Non vital link to the

other ULE

Autoinclusion

from EOVCM

E32INP

SLE

ALIM_5_12

5Vcc to

UVIO rack

220 Vca

from PDC

Figure 3 : Main and secondary station ULE details.

ISO 9001:2008

Vital Communication ModuleIn the VCOM module, the functions are divided amongst the cards as follows:EHICOM ATC card: controls communications to the ATC network using the optic modems contained in the UCS unit. The card controls and checks communication up to the excluded application level. EHICOM N/R card: supports and controls communications with the other SLE subsystem to maintain alignment with the stand-by system. The card controls and checks communication up to the application level.

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EVPD moduleBoards belonging to the EVPD module are always placed in the rightmost positions of the rack.EVPD board is placed in slots 16 and 17

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Vital Power Driver ModuleThe EVPD module is made with a single EVPD card which receives from the main module all the checkwords collected from the various relative safety operation certification modules.

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Vital Power Driver Module The function of the EVPD card is:If the checkwords are correct and in the correct sequence the EVPD module produces an enable signal to supply vital output mains power.EVPD Diagnostic signal

ISO 9001:2008

Non Vital I/O ModuleThe NVIO module is made up of the following types of cards: ECPU1EHICOM Non Vital NETE32INP E32OUT.

ISO 9001:2008

NVIO Module identificationBoards belonging to NVIO module are placed in a variable number to the left of the EVPD boardE32OUT and E32INP boards occupy the slots immediately adjacent to EVPD (in the figure slots from 13 to 15 are occupied)ECPU1 board occupies next slot to the left (slot 12 in figure)EHICOM DMS board is placed among communication cards (slot 7)

ISO 9001:2008

Non Vital I/O ModuleIn the NVIO module, the functions are divided amongst the cards as follows :ECPU1 card: controls the reading and writing operations on the non-vital input and output cards and, processes the data flow towards SDM and non vital systems.EHICOM card: supports and controls communications with non vital channel of DMS for remote control operation E32INP card: implements the non-vital input modules. E32OUT card: contains the non-vital output ports.

ELOB

iSBX

MAIN

ELOB

RCHK

ELOB

VCOM

EVPD

ULE

SYSTEM BUS

NVIO

ECPU3

ESYMOD

EIOINT

ECPU2

EIOINT

EVPD

ECPU1

DMS

EHICOM

E32OUT

EHICOM

N/R

ATC

EHICOM

Connection to the

FSFB NET NED(for SKG only)

Connection to the

ATC NET

Vital link to the

other ULE

Connection to the

DMS system

Vital Power

Enabling signal

to UVPS

Connection to

the vital output

board (UVIO)

Connection to

the vital input

board (UVIO)

Main cycle

sychronizing

signal

Connection to the local

non vital I/O

Connection to the

diagnostic system

NET 1

EHICOM

Connection to the

FSFB NET NEL

NET 2

EHICOM

Connection to the UCS

for ELH relays status

Non vital link to the

other ULE

Autoinclusion

from EOVCM

E32INP

SLE

ALIM_5_12

5Vcc to

UVIO rack

220 Vca

from PDC

Figure 3 : Main and secondary station ULE details.

ISO 9001:2008

UVIO Basic Modules

The UVIO includes the following modules:VINP

VOUT

ISO 9001:2008

Vital Input Rack:This module contain two cards: EIOBUF EVIN16EIOBUF card is an interface to the EIOINT MAIN card of ULE, it allows the ECPU3 to communicate with EVIN16The EVIN16 contain 16 fail-safe circuits for reading 16 vital inputsA maximum of 13 EVIN16 cards can be insertedThe main function is :Local vital input reading

ISO 9001:2008

Vital Output Rack:Maximum Number of OutputsThis module consist of three types of cardsEIOBUF cardEOVCM cardEDBO16 cardEIOBUF is an interface to the EIOINT RCHK card,it allows ECPU2 RCHK card to communicate with EOVCM & EDBO16A maximum of 12 EDBO16 type cards can be inserted, each one containing 16 vital output modules for driving & checkingvital outputs.EOVCM is used for checking the status of vital power generatorsVOUT main function is :Local vital output driving & rechecking

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SSW Composition(Subsystem for management of switchover)It is made up of the following units: a communication unit (UCS) a vital power unit (UVPS).

Both units are set up for common resource switchover to the SLE subsystem in service.

ISO 9001:2008

UVPS ELEMENTS(Vital power switch unit)The UVPS is internally redundant. This unit is made up of two module:VP : Vital power supply & detection moduleAFM : Vital power switch module

NormalReserve

ISO 9001:2008

Vital Power Supply ModuleThe VP module is redundant in the unit and is made up of: VP 2No.AOVD 2No.The AOVD (Absence of voltage detector) detects ,through a fail safe circuit ,VPs activity; each AOVD monitors both VP & provide information to the ULE it is connected to.VP card can provide a vital power supply of 12vdc ,there is one VP for each ULE.

ISO 9001:2008

VP CardVP card: generates the vital power using a 100 W maximum power circuit designed with fail-safe techniques (class I hardware). Power is only supplied in the presence of the enable signal coming from the EVPD module.

ISO 9001:2008

AOVD CardAOVD card: measures output power of all the system VPs (both Normal and Reserve) using a fail-safe circuit (class I hardware). Using the EOVCM card, this measurement supplies VP "ON/OFF" status to the ULE RCHK module. It is also used by the SLE to guarantee that in vital mode there is only ever one VP "ON".

ISO 9001:2008

Vital power switch moduleThe vital power switch module consist of one card AFMThe AFM is the final component determining vital power supply presence towards the SLE N or SLE R outputs.AFM module is involved in function:Automatic & manual switching between two ULEs

ISO 9001:2008

UCS Unit FunctionsUnit for communication switchingThe communication and switchover unit (UCS) makes the connection to all physical line communication interfaces present in the SLE. The UCS is not redundant, anyway there are two channels with distinct lines for each type of communication. This unit is made up of a LSW module and a MODEM module.

ISO 9001:2008

ASCV to ASCV Communication

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Line Switcher Module DescriptionThe LSW module switches the communication channels towards the SLE subsystem in service. This switchover occurs automatically and is synchronised with ASCV system switchover from Normal to Reserve or vice versa (both in manual and automatic) in a manner transparent to the user.

ISO 9001:2008

Line Switcher Module CompositionThe LSW module is made up of the following types of cards: ELHSUP_AL5. While the SUP_AL5 board is always one in the LSW module, the number of ELH can be up to 4, depending on the number of communication channels to manage.

ISO 9001:2008

Modem Module CompositionThe MODEM module is made up of the following types of cards: CRSA2SUP_AL15. The number of CRSA2 and SUP_AL15 boards vary depending on the number of communication lines to manage. Each CRSA2 supplies up to 2 CRSA2 modems.

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Service call buttons descriptionSystem manual switchovers can be carried out using the push-buttons named N and R; these are protected against accidental activation by the key-locked door mounted in front of the cubicles.

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Lights status informationFor each SLE there are also three lights that provide status information.

ISO 9001:2008

DIAGNOSTIC AND MAINTENANCE SUBSYSTEM(SDM)

ISO 9001:2008

SDM operationsSDM is a dedicated subsystem for diagnostic and maintenanceIt performs the following operations:It collects the diagnostic information transmitted by NVIO and makes them available to maintenance-people in an alphanumeric and graphic form easy to interpret and consult; It allows maintenance people to carry out analysis and statistical operations on collected information.It can also integrate the functions traditionally required of chronological event recording.

ISO 9001:2008

SDM System compositionThe composition of Diagnostic and Maintenance SystemSDM COMPUTERULE RULEN

ISO 9001:2008

ASCV INTERFACES

CBI interfaces overview

CBI

interlocking cubicles

Local ATS *

TC

Trackside

FSFB Net *

ATC Net *

Field

Main signalRoute indicatorBuffer stopShunt signal

SER

Power supply alarm

SCR

Control Cumindicationpanel

ESP

Platform

ESP

* These links are not described in this document.

SDTC

Key transmitter

ISO 9001:2008

TROUBLESHOOTING OPERATIONS

ISO 9001:2008

Type of ERRORSResetting Error a Resetting Error is an error that cause hardware RESET to the ULE who generated it. This is the safe reaction of the ASCV system against un-safe failures. The Reset stops all vital function of the ULE and forces a restart of the ULE. The non-vital functions are not completely affected by the reset, because the diagnostic information has to be dispatched always. A Reset put the SLE status to "non-active"; the reset has no effect to the standby SLE which, if available become "in-service" immediately or, if already "in-service", continues its tasks normally.Non Resetting Error a Non Resetting Error is a light error that cause a degrade of the SLE who generated it. There is no safe reaction of the ASCV system because the non-resetting error is a safe failure mode of the equipment. This means that the SLE continues its tasks but a function is no longer available; an automatic switchover of the SLE, if the failure is raised by the in-service SLE, is performed in order to keep in service the SLE less degraded.Warning a Warning, as the non-resetting error, is a light error that may cause a degrade of the SLE who generated it. There is no safe reaction of the ASCV system because it is a non-resetting error is a safe failure mode of the equipment. For warnings there is no automatic switchover of the SLE, if the in-service SLE raises the failure; the SLEs continue their tasks.Information Information is not referring to any anomaly but to confirm a status or a STOP_ALARM, in fact normally; when errors stop the message that notify the normal function is an information.

ISO 9001:2008

ERRORS LEVELThe ASCV's diagnostic information are divided in 4 groups that determine the level or the alarm related hierarchy:

Most importantResetting Error (preceded in the Log Buffer by a "!")Non Resetting ErrorWarningLess importantInformation

ISO 9001:2008

The following illustrates the "Log Buffer" window in the SDM terminal; moreover the picture highlights the information really important reported in the log buffer; the above list explain the evidenced points:1 Date (day / month / year).2 Time (hour : minutes : seconds . mils).3 ULE who generates the anomaly (N = Normal, R = Reserve).4 Brief description of the alarm5 SDM error code6 Numeric parameters related to the error code

ISO 9001:2008

Log Buffer window in SDM.

1

2

3

4

6

5

ISO 9001:2008

PRECAUTIONS WITH ASCV Do not touch cards without using Anti-static strap. Remove jewels or watch before doing so. Do not manually changeover SLE in revenue service as it may cause reverse DOT TC to flicker Remember to change EPROMs while changing ECPU3 ,ECPU2, ECPU1 and EHICOMs Do not Remove or Insert cards without switching off power supply.

ISO 9001:2008

Any Questions?

ISO 9001:2008

THANK YOU

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