Ats Ultra Project – Original Equipment Manufacturer Manual For Automatic

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ATS ULTra Project – Original Equipment Manufacturer Manual for Automatic Vehicle Protection Draft 3 Proprietary to Advanced Transport systems Ltd

1.1. Tools required for Maintenance and

Repair

Description

Part no.(If required)

1

Screwdriver set

Standard set

2

Allen key set (metric)

Standard set

3

security hex/torx bits

Standard set

4

Crimp gun for connectors

Tyco crimps

5

Crimp gun for ferrules

Grip on 912.07

6

DVM

Standard

7

Ferrell crimps

8

1. Fault Diagnosis Under normal operation conditions and with no vehicle present all the ‘Proceed LEDs should be illuminated in the GEE cabinets. This is with the exception of some GEE boxes situated on the roundabout were the yellow inhibit LED is on permanently on the in fills, merges and diverges. The fault diagnoses should be carried out using the ATS trolley with the Redcliffe monitoring system. The proceed signals may be lost momentarily as the receivers approach loop boundaries, this is normal and should be expected. Only when the proceed /speed signals are lost for a sustained section of the loop will indicate a problem. The trolley should be pulled along the guideway and the six measurements visually monitored. Checks should be made for loss of proceed signal strength (F1 & F2). The signal strength should never fall below 1000 mV anywhere on the guideway The signal strength on the roundabout will be lower than that of the straight sections due to the wider loop widths on the merges and diverges. Measurements on the trolley differ to those of the vehicle, so these measurements are for indicating faults, not for accurate readings. The vehicle box and monitoring system can be remove from the trolley and fitted to an ATS vehicle in order to obtain more accurate measurements. Note. This procedure should be carried out whenever a repair or calibration is completed

Monitor System Faults The support required here is to process and relay on to Central Control the alarm messages provided by the AVP. The messages can be processed to locate faulty loops by: Commercial In Confidence

Page 1 of 15 6th August 2008

ATS ULTra Project – Original Equipment Manufacturer Manual for Automatic Vehicle Protection Draft 3 Proprietary to Advanced Transport systems Ltd



Vehicle undetected - noting gaps in the ‘Loop Occupied’ sequence as the vehicle passes and/or appearance of the ‘Detector Fail’ signal.



Loops not transmitting – no ‘Proceed On’ signal from one or more loops when not inhibited, and/or appearance of the ‘Proceed Signal/Inhibit Fail’ signal.



Failure to inhibit loops correctly – no or spurious ‘Loop Inhibited’ signals when expected, and/or appearance of the ‘Proceed Signal/Inhibit Fail’ signal. Listed below are the faults that could be detected by the control room.

1.1.

Loop Faults

Fault No. Description

Flow diagram Reference.

1

Fails to detect Vehicle

17.7

2

False vehicle detection

17.6

3

Fails to Inhibit

17.7,17.12

4

False Inhibits

17.4

5

False Proceed signal (Same as 3)

17.7,17.12

6

No proceed signal

17.4,17.8,17.12

7

Monitoring signal fault with no fault in functionality 17.11

8

Speed limit incorrect

17.10

9

False Alarm.( Alarm activates with no real fault)

17.11

1.2.

GEE faults

Fault No

Description

Flow Diagram Reference

1

Fails to detect vehicle on one side

17.7

2

Fails to proceed on one side

17.9

3

Interface Failure(Any inter GEE inhibits, Power down inhibit or sync failure

17.8

4

Master sync Failure

17.3,17.8

Commercial In Confidence

Page 2 of 15 6th August 2008

ATS ULTra Project – Original Equipment Manufacturer Manual for Automatic Vehicle Protection Draft 3 Proprietary to Advanced Transport systems Ltd

1.3.

Vehicle Faults

Fault No. Description

Flow Diagram Reference

1

Fails to transmit presence signal( Vehicle undetected) 17.7

2

Faulty Speed signal provided

17.1

3

False proceed or speed signal

17.11

4

No proceed or speed signal

17.9,17.12

5

Incorrect speed signal

17.10

Commercial In Confidence

Page 3 of 15 6th August 2008

ATS ULTra Project – Original Equipment Manufacturer Manual for Automatic Vehicle Protection Draft 3 Proprietary to Advanced Transport systems Ltd

Flow Diagram of Proceed Signal Inhibit Fault on one Loop control PCB

17.2.

Proceed signal/ Inhibit fail LED 1 illuminated on one Loop control PCB

Remove suspect Loop controller PCB using red eject lever and replace with spare Loop control PCB

Yes Loop Control PCB faulty

Has fault gone?

No From 17.6 17.2(a)

Turn the rack 90º to gain access to backplane Ref 12.1.1

Unplug the preamp plug associated with the suspect loop control PCB. Unplug the next preamp plug along and swap the two over

Has the fault moved from the original loop control PCB to the next one along?

No

Connection problem between Loop control PCB and backplane

Yes

Preamp cable, preamp or loop connection problem. Remove the GRP lid to gain access to the suspect Preamp box.

Commercial In Confidence

Page 4 of 15 6th August 2008

ATS ULTra Project – Original Equipment Manufacturer Manual for Automatic Vehicle Protection Draft 3 Proprietary to Advanced Transport systems Ltd

CONTINUED

Are connections on TB1 & J1 on preamp secured?

Secure connectors and check for fault condition

No

Yes

Has gone?

Connection problem

Yes

Yes Preamp PCB fault

Open preamp box (Ref 13.1.5)

No

Replace preamp. Has fault gone from loop control PCB?

No

Check continuity of preamp cable and crimped connectors

Commercial In Confidence

Page 5 of 15 6th August 2008

ATS ULTra Project – Original Equipment Manufacturer Manual for Automatic Vehicle Protection Draft 3 Proprietary to Advanced Transport systems Ltd

Flow Diagram of Proceed Signal Inhibit Fault on all Loop control PCB

17.3.

PSIF: Proceed signal/Inhibit Fail Proceed signal/ Inhibit fail LED (1) illuminated on all Loop control PCBs in GEE cabinet on side ’A’ or side ’B’ or both

Yes

Check next GEE box Upstream. Are all PSIF LED s illuminated on sides A or B?

Are PSIF LEDs illuminated on sides A & B?

No

Replace Slave Sync PCB. Has fault gone? Replace Master Sync PCB Refer to FAT test

No

Yes Slave Sync PCB fault. .Refer to FAT test

Replace Oscillator coder PCB.

Yes

Has fault gone?

Commercial In Confidence

Oscillator Coder PCB fault. Refer to FAT test

Page 6 of 15 6th August 2008

ATS ULTra Project – Original Equipment Manufacturer Manual for Automatic Vehicle Protection Draft 3 Proprietary to Advanced Transport systems Ltd

Flow Diagram of False Inhibit Fault on Loop Control PCB

17.4.

One inhibit LED illuminated with no vehicle in close proximity

Remove the next 2 Loop control PCBs to the right of the inhibited one

No

Is the Loop PCB still inhibited?

Fault with one of the adjacent Loop control PCB. Refer to Loop Control FAT test

Yes Replace suspect Loop PCB with spare

No

Fault with Loop Control PCB. Refer to FAT test

Is the Loop PCB still inhibited?

Yes

7

Yes

Reset impact switch

No Note: If backplane is of the configurable type check for broken connections on the back. Ref 10703-LK- GEExxx Possible Backplane connection problem. Refer to 13.1.3 to replace backplane.

Flow Diagram of Detector Fail LED fault on Loop Controller PCB

17.5.

Commercial In Confidence

Page 7 of 15 6th August 2008

ATS ULTra Project – Original Equipment Manufacturer Manual for Automatic Vehicle Protection Draft 3 Proprietary to Advanced Transport systems Ltd

Is the Detector fail LED permanently illuminated on the Loop control PCB?

No

Is other side operation correctly?

No

Flashes on occasionally This may not be a problem please refer to Redcliffe

Determine fault with other side

Yes Yes

Is fault still present?

Swap suspect Loop control PCB with spare

Has Detector fail LED gone out?

No

Please refer to Redcliffe

Yes Loop control PCB fault

Commercial In Confidence

Page 8 of 15 6th August 2008

ATS ULTra Project – Original Equipment Manufacturer Manual for Automatic Vehicle Protection Draft 3 Proprietary to Advanced Transport systems Ltd

Flow diagram of False Occupied fault on Loop Control PCB.

17.6.

Occupied LED (5) illuminated on loop control PCB with no vehicle present

Replace suspect loop PCB with spare

Has fault gone?

Yes

Fault with Loop control PCB Please refer to Loop Control PCB FAT test

No Use Preamp test box to check preamp wiring and preamp

Yes Is preamp functioning correctly?

Please refer to Redcliffe

No Problem with Preamp/wiring Refer to flow diagram 17.2 (a)

Commercial In Confidence

Page 9 of 15 6th August 2008

ATS ULTra Project – Original Equipment Manufacturer Manual for Automatic Vehicle Protection Draft 3 Proprietary to Advanced Transport systems Ltd

Loop control PCB Fails to Detect Vehicle on one side

17.7.

Loop control PCB fails to detect vehicle entering loop (on one side)

Proceed signal/ inhibit fail LED (!) illuminated see 15

No With no vehicle present Only Proceed LED (4) should be illuminated

Detect Fail LED (2) Illuminated see 15. Inhibit LED (3) Illuminated see 15.

Yes

Position ‘Test trolley’ (Ref 15.1) over suspect loop. Only the proceed LED (4) and the Occupied LED (5) should be illuminated

Problem with Vehicle board. Please refer to Vehicle PCB FAT test

No

Replace Loop Faulty Loop controller PCB

Control PCB. Is test trolley detected?

Yes

No

Problem with pre-amp or wiring. Please refer to flow diagram 15.2 (a)

Commercial In Confidence

Page 10 of 15 6th August 2008

ATS ULTra Project – Original Equipment Manufacturer Manual for Automatic Vehicle Protection Draft 3 Proprietary to Advanced Transport systems Ltd

17.8.

Pre-amp faults

Gain of Preamp too high If the gain of the preamp has become too high it is possible for the preamp in that loop to detect a vehicle too early and inhibit itself. This faults would cause a dropout of proceed signal on that side. This fault could also affect loops in close proximity such as at merges and diverges. Gain of Preamp too Low The vehicle may lose the proceed signal in the loop controlled by the faulty preamp.

Faults between GEE Cabinets The system is design that if a fault should occur between cabinets the system would fail safe and permanently inhibit the affected loops.

Commercial In Confidence

Page 11 of 15 6th August 2008

ATS ULTra Project – Original Equipment Manufacturer Manual for Automatic Vehicle Protection Draft 3 Proprietary to Advanced Transport systems Ltd

Flow diagram of loss of proceed signal on vehicle

17.9.

Loss of Proceed signal to vehicle

Is there a vehicle

Provided the vehicle is within minimum headway, the system is inhibiting correctly.

Yes

A head

No

Check the status of the loop control PCB associated with the loop at which proceed signal is lost

Yes Refer to flow diagram 16.4

Is occupied LED (5) illuminated on associated Loop PCB?

No Is ‘lost transmitter alarm’ activated on vehicle PCB? (Ref. Vehicle PCB FAT) test

No

Put ‘Txbox’ in loop (ref 15.4)

Yes

Is Occupied LED ILLUMINATED?

The problem is with preamp or associated wiring.

Fault with vehicle PCB or Vehicle Transmitter. Check calibration of 1 kHz on vehicle PCB. Refer to Vehicle FAT test

No

Ref 17.6. If this fault has occurred on a roundabout the problem could be connection problem on configurable backplane

No

Replace loop control PCB with spare.

Yes

Is occupied LED on?

Commercial In Confidence

Fault with loop control PCB. Refer to FAT test

Page 12 of 15 6th August 2008

ATS ULTra Project – Original Equipment Manufacturer Manual for Automatic Vehicle Protection Draft 3 Proprietary to Advanced Transport systems Ltd

Flow diagram for loss of speed signal on vehicle

17.10.

Speed jumpers on back plane incorrect. See 12.1.3 (11.1.3)

Yes

Is Speed signal stable but incorrect

No

Loss of speed or unstable speed readings

Are all or most of the loops in one GEE cabinet affected?

No

No

Fault with loop control PCB. Refer to FAT test

No

Yes

Fault with Vehicle box or TX/RX units. Refer to FAT test

Yes

Swap associated loop control PCB with spare. Has fault gone?

Use ATS ‘test trolley’ to check speed readings.

Change preamp (ref 13.1.5 preamp removal) Has fault gone?

Are faults still present?

Preamp fault. Refer to FAT test

Yes No Swap Oscillator PCB with Spare.

Refer to Redcliffe

No Speed signal ok?

Yes Suspect Oscillator PCB requires calibration. Refer to FAT test

Commercial In Confidence

Page 13 of 15 6th August 2008

ATS ULTra Project – Original Equipment Manufacturer Manual for Automatic Vehicle Protection Draft 3 Proprietary to Advanced Transport systems Ltd

Monitoring signal fault with no fault in functionality

17.11.

Monitoring system detects fault but system functioning correctly. Alarm indicated in control room.

Loop Control PCB Replace the suspect loop Control PCB. ** Has fault been removed?

Yes

Fault. Refer to FAT test

No

Possible problem with ribbon cable connection on rear of backplane to monitoring box (ref 6.2 for backplane details). Check monitoring box

Commercial In Confidence

Note. A damaged Opto-coupler on the output of the loop control PCB may only show in the control room and not on the PCB itself.

Page 14 of 15 6th August 2008

ATS ULTra Project – Original Equipment Manufacturer Manual for Automatic Vehicle Protection Draft 3 Proprietary to Advanced Transport systems Ltd

Loss of proceed signal on one or both side

17.12.

Loss of proceed signal one or both sides of GEE

Are all LED indicators off in GEE?

Check power to GEE cabinet

Yes

Is the Proceed fail/inhibit Yes LED (1) illuminated on both sides

Check Master sync PCB. Note. Sync LED will only be illuminated if a fault is present. Refer to Master Sync FAT test.

No

Is the Proceed fail/inhibit LED (1) illuminated on one side

Yes Replace the oscillator PCB, if this doesn’t solve the problem replace the slave sync PCB.

Possible connection fault between GEE cabinets. (Refer to Fig 6 System Oscillator) .This shows the interconnections of No the Vehicle ‘sync’ signal between GEEs.

Yes

Retest and repair faulty PCB

Has Fault been rectified?

Diverging – Loops Behind Released

Commercial In Confidence

Page 15 of 15 6th August 2008

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