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MT Trainee > Faults - Siemens > Flashcards

Faults - Siemens Flashcards

1
Q

What 4 things occur when a Siemens is stabled?

A

Marker lights extinguish
Saloon lights (including EMY) extinguish
PA system inoperative
Saloon doors lock

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2
Q

Key in or out for Siemens stable?

A

Out

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3
Q

Where is the trailer car fault panel?

A

Right of door 2

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4
Q

What are the 10 trailer car fault lights?

A

Brakes bogie 1 & 2
HVAC 1 & 2
Static inverter 1 & 2
Brakes cut out bogie 1 & 2
Park brake bogie 1 & 2

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5
Q

If a fault develops in sub system on the train, what is the first indication?

A

Flashing general fault light

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6
Q

How do you respond to a flashing general fault light?

A

Press fault acknowledge button

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7
Q

What indication would you get to know where a fault is located?

A

1st unit and 2nd unit lights

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8
Q

If both 1st and 2nd unit fault lights are conflicting, what could this indicate?

A

Fault with coupler

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9
Q

What are the 3 causes of a critical defect?

A
  • Pneumatic friction brake system fault
  • loss of auxiliary power supply (both SIVs defective on one unit)
  • wheel slip fault affecting sanders
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10
Q

If a critical fault light is illuminated what 3 actions can the driver take

A

Operate train at low speed
Detrain at first station
Shunt to nearest siding

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11
Q

If a critical fault light is illuminated and it is not possible to move the train, what 2 MCBs can we check?

A

-Friction brake and monitoring MCB (in all cars)
Static inverter monitoring MCB (in trailer car)

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12
Q

Critical fault found, cannot move train and relevant MCB can’t be reset - what happens?

A

Disabled

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13
Q

What does the maintenance fault light indictate?

A

Service required on that unit (safe operation of train not affected)

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14
Q

What does the reduced performance fault light indicate?

A

One or more motor cars are failing to deliver traction power

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15
Q

What does traction system fault light Indictate?

A

‘This car’ is failing to deliver traction power

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16
Q

How do we isolate traction motors?

A

We don’t, TCU automatically does it for train

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17
Q

How can a driver reset a traction lock caused by traction faults in the system?

A

Move MC to 0 for a limited time

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18
Q

During a wheel slip event the reduced performance light may illuminate. What can we do to resolve this?

A

Move MC to 0 for 2 seconds
Then continue to power

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19
Q

If there is an attempt to activate another cab, what two indications would a driver get?

A

Another cab active light in both cabs
Buzzer sound in cab where attempt is being made

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20
Q

3 steps a driver must take if another cab active light illuminates

A

-Inspect cleaner key in lead
-Make cab to cab
-Inspect each cab for being active

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21
Q

If unable to deactivate another cab active, what can we do to rectify?

A

Trip cab/train manned MCB in affected motor (train cannot be driven from this cab)

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22
Q

If CCTV fault light is illuminated, what 2 MCBs can we check?

A

CCTV central control MCB
DC-DC inverter PA, PI display MCB (if set, reset and trip)

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23
Q

Failure of PID, 2 MCBs we can check

A

-DC-DC inverter PA, PI display MCB (trip and reset after 30 seconds)
-Passenger info display MCB

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24
Q

If a failure of PA system is found during train preparation, what MCBs can we check?

A

Trip and reset =
PA system MCB (DMA car)
DC-DC inverter PA, PI display MCB

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25
Q

If PA system is not operational after resetting relevant MCBs, can we stable for fault rectification?

A

Yes

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26
Q

If we have a failure of PA while in running, which of the two relevant MCBs should driver check and reset, and for how long

A

DC-DC inverter PA, PI display MCB for 2 minutes

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27
Q

What are the 4 panto fault scenarios?

A
  • one panto fails to raise
  • all pantos fail to raise when UP button pressed
  • all pantos fail to lower when STABLE button pressed
  • all pantos fail to lower when DOWN button pressed
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28
Q

If one panto fails to raise after UP button pressed - what 2 MCBs can we check?

A

Panto Control MCB in local cab
Panto motor MCB in affected cab

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29
Q

If all pantos fail to raise, what MCB can you check?

A

Panto Control MCB In affected motor

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30
Q

If all pantos fail to raise and you’ve checked the relevant MCB, what do you do?

A
  1. Attempt raise from another motor
  2. If not, stable and wait 1 min
  3. Trip panto motor MCB
  4. Raise lead panto with crank handle
  5. Press panto UP
  6. Reset panto motor MCB
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31
Q

Pantos fail to lower when STABLE button is pressed, what MCBs do we check? (3)

A

Trip and reset:
- train stable, HSCB & light control MCB in local driving cab
And
- shut-down delay MCB in trailer car
And
- TCU MCB (as TCU may not realise train is stationary)

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32
Q

Pantos fail to lower when STABLE button is pressed and we’ve tripped and reset the relevant CB’s and pantos still fail to lower, what do we do?

A

Leave them raised and book it

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33
Q

Panto fails to lower when DOWN button is pressed - which CB

A

-Inspect/reset panto motor In affected car
-attempt to lower again
-if fails, leave them up (train cannot enter service)

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34
Q

How to isolate pantos

A

Key off and out
Stable
Trip panto motor affected car
If required - crank handle to lower
Key in and on
Press panto up

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35
Q

What is another reason all pantos fail to rise?

A

Low batteries

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36
Q

What is lost if one SIV goes out

A

50% HVAC

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37
Q

What equipment is lost if both SIVs go out?

A

Battery charger
Air compressors
HVAC
Emergency lighting only available
Half driver cab fluoro

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38
Q

What voltage can SIVs not be started up

A

82v DC

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39
Q

If train is under 82v how do we raise pantos (manual start)

A

Stable
Trip panto motor
Raise local panto via crank handle
Tri key on SIV box
Press white self excite button
Activate cab
Push panto up button
Reset panto motor

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40
Q

Can DCU isolate doors?

A

Yes

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41
Q

If DCU has isolated a door, what fault light will flash?

A

Door systems

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42
Q

Are trailing cab doors part of the door loop system?

A

Yes

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43
Q

What will happen to the door close light if a cab door is open in a non active cab?

A

Extinguish

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44
Q

How many times can we attempt to reset a saloon door CB?

A

Twice

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45
Q

What are the door CBs fitted to DM and T cars?

A

Door control train lines (DM)
Closed and locked loop (DM)
Door control T Car (T)
Door control power supply 1 (both)
Door control power supply 2 (both)
Door control power supply 3 (both)
Door control power supply 4 (both)

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46
Q

If you get FDCL what CB can you trip and reset?

A

Door control train lines

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47
Q

When locating a faulty door, after hiw many seconds will door tones no longer be available?

A

30 seconds

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48
Q

If you’ve found defective door, how do we first attempt to close it?

A

Button button
If thus doesn’t work manually close it

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49
Q

How do we manually close a faulty door

A

-Trip applicable door control power supply MCB
-manually close door
-set applicable door control power supply MCB
- Tri key to lock

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50
Q

How to close a DER that’s been open

A

Press door close button

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51
Q

When master control key is on the trip will lower but trip light won’t illuminate until you do what?

A

MC to 0 (reset safety loop)

52
Q

What to do if trip fails to reset

A

Trip cock bypass
Run on secondary circuit pressing MAD button

53
Q

Trip fails due to mechanical defect?

A

Trip cock bypass
Isolate trip MCB behind extinguisher
Run onn secondary circuit pressing MAD button

54
Q

When running on secondary circuit, after what time will MAD need to be pressed and time when emergency brakes will apply

A

Goes off every 45 seconds
Additional 10 seconds not pressed the EMY brakes will come on

55
Q

Is VICERS automatically isolated when we bypass the trip and/or safety loop?

A

Yes

56
Q

If we find the master controller inoperative while in running what 4 things can we do?

A

MC to EMY position
ESB (Emy stop button)
Park brakes on
Key to off position

57
Q

If headlights fail to operate, what 3 MCBs can we check

A

(All have lights in name)
External lights control MCB
DCDC inverter, front light, wiper MCB
External light supply MCB

58
Q

If there is a fire on board what do we do?

A

Turn off HVACs

59
Q

What fault lamp indication do we get when ED brake is Inhibited?

A

Yellow brake inhibit button
And brakes on status light

60
Q

How to isolate a bogie

A

Locate brake module
Turn bogie iso cock

61
Q

How to know if a park brake has failed to release on a bogie

A

Park brake switch light remains illuminated
Retardation
Smoke

62
Q

If park brakes are failing to release, what initial 3 steps can a driver take?

A

Attempt to release via PB switch
Check cab/train manned MCB
Power against PB

63
Q

What speed will open the safety loop if train is powering with park brakes on?

A

5km

64
Q

How to manually release park brake

A

-Brake module
-Turn bogie iso
-Unlock/remove pin from park brake releases device
-pull release device outwards
-replace pin
-turn bogie iso back

65
Q

Do you need to manually release park brakes on both sides of bogie?

A

No

66
Q

Can the park brakes still apply after you’ve manually released them?

A

Yes. They are not isolated, just manually released

67
Q

At what MR pressure will the safety loop open?

A

600kpa

68
Q

What fault light flashes when MR is below operating range?

A

Uncouple button

69
Q

If MR pressure above 600 and below 850, how do we run the train?

A

Operate train as per normal and continue to monitor MR

70
Q

If air suspension is leaking and we need to isolate, what extra step do we take after isolating one bogie?

A

Isolate other bogie too

71
Q

If a Siemens air bag is deflated, what speed must train not exceed?

A

80km/h

72
Q

If a suspension spring is found defective, what happens to train?

A

Removed from service

73
Q

If MR pressure drops to 700kpa, what could be the possible cause?

A

towing cock in rescued position

74
Q

MR leak on cars 1,2,5,6 - can we drive?

A

No. Disabled.

75
Q

MR leak on cars 3 or 4 - what do we do?

A

Close end cocks
Manually release PB’s
Safety loop bypass
Continue driving under isolated equipment restrictions

76
Q

If MR drops below 600 due to a compressor fault, what two fault lights will we get?

A

Compressor fault light
Safety loop fault light

77
Q

If safety loop opens due to compressor fault, what can train Control get us to do?

A

Stable

78
Q

If compressor fault light is still illuminated after stabling, what can we isolate?

A

Compressor pressure switch (t car)

79
Q

If compressor pressure switch is isolated, how will the compressors operate?

A

Run continuously

80
Q

What 2 reasons can a driver isolate the sanders?

A

-Major damage to sanding equipment
-Major leak resulting in low MR affecting safe operation of train

81
Q

Whistle sounding continuously, what do we do and what CB can we check

A

Slap it
Trip/reset DCDC Inverter front light/wiper MCB on affected car

82
Q

If unable to rectify whistle sounding continuously, what cock do we isolate?

A

Whistle isolating cock in cabinet left of drivers feet

83
Q

Whistle not sounding steps and 2 CB’s to check

A

Slap it
Inspect whistle iso cock
-Trip/reset windscreen wiper/Horn MCB
-DCDC inverter front lights/wiper MCB

84
Q

What type of coupler on a Siemens

A

Dellner

85
Q

Where is the trip cock MCB?

A

Behind the extinguisher on A side

86
Q

How to isolate trip in raised position

A

Key off and out
Unlock extinguisher cabinet
Trip the trip cock MCB
Activate cab

87
Q

What are the positions of the brake pipe key switch

A

0 and I (off/on)

88
Q

Which cab should the brake pipe key switch be activated in?

A

The coupled cab end

89
Q

5 positions of the BP mode selector switch

A

0 - off
1 - pushed
2 - pulling
3 - pulled
4 - pushing

90
Q

TU1 function

A

Reads and writes to and from brake pipe during a non electrical train rescue

91
Q

Will EMY brakes apply if there is an issue with TU1?

A

Yes, it is a fail safe feature

92
Q

Towing cock function

A

-Used when rescuing a comeng
-lowers Siemens MR pressure to the coupler to 700kpa

93
Q

What is turned first - BP key switch or BP selector switch?

A

Selector switch

94
Q

When a Siemens is rescuing another Siemens, if both trains are below speed threshold (0.2km) what will happen to EMY brakes on both trains?

A

EMY applied in rescuing = brakes applied throughout whole train
EMY applied in rescued = brakes apply on that portion of train only

95
Q

When Siemens to Siemens rescue, is there a graduated brake?

A

Yes, service brake

96
Q

Siemens pushing disabled siemens
In disabled train - What CB needs to be tripped and what will BPMS position be in?

A

TCU CB
BPMS = 1 (pushed)

97
Q

Siemens pushing disabled siemens
Setup In assisting train in driving (center) cab

A

Isolate trip
Trip cock bypass
BPMS = 4

98
Q

Siemens pushing disabled siemens
Disabled train leading car setup

A

TCU MCB
lower trip
Isolate vicers

99
Q

What driving position does disabled siemens being pushed need to be in?

A

Set speed

100
Q

Emergency pressure

A

280kpa

101
Q

Holding pressure

A

110kpa

102
Q

When Siemens train is pushing a disabled siemens, who would be pressing MAD button?

A

Assisting pushing train

103
Q

When Siemens is rescuing another Siemens train, where is the TCU CB tripped?

A

In all driving cabs of the disabled train

104
Q

During Siemens to Siemens rescue, and assisting train is pushing disabled - where must braking be conducted?

A

From disabled lead

105
Q

Siemens pulling disabled siemens
Setup in disabled train coupled end (trailing centre motor of combined train)

A

Tcu MCB tripped
Isolate trip
Trip cock bypass
BPMS = 3 (pulled)

106
Q

Siemens pulling disabled siemens
Setup in assisting train coupled cab (leading centre motor of combined train)

A

BPSS = 2 (pulling)

107
Q

Siemens pulling disabled siemens
Setup in assisting train lead driving motor

A

Trip lowered
VICERS isolated

108
Q

Why do we trip TCU in disabled train when rescuing?

A

So we don’t fight against motors

109
Q

At what KPA will the compressor fault light illuminate?

A

850kpa

110
Q

Park brakes come on at what pressure

A

350kpa

111
Q

Safety loop opens at what pressure?

A

600

112
Q

Tow cock reduces siemens MR to coupler to what pressure?

A

700kpa

113
Q

Uncouple light flashes at what kpa?

A

850

114
Q

MR operating range

A

850-1000kpa

115
Q

Comeng safety valve pressures

A

1100
1050

116
Q

Reset DTRS procedure

A

Deactivate cab
Trip and reset DTRS MCB
Activate cab
Re enter TDN
Radio test
TMM

117
Q

Isolate DTRS procedure

A

Deactivate cab
Trip DTRS MCB
Reactivate csb
Portable radio is now primary unit

118
Q

CB’s to disable a train - which ones can be bypassed (in an active cab)

A

FACES
Friction brake and monitoring ✅️
Automatic coupler control ✅️
Cab trained manned
Emergency brake valves
Safety loop

119
Q

Holding brake speed

A

0.2km

120
Q

Overspeed light illuminates at what speed

A

Set speed - 6km
Forward - 120km

121
Q

What over speed causes emergency brakes

A

125km

122
Q

What other indication when overspeeding

A

Audible tone

123
Q

What equipment is isolated when safety loop Is bypassed (7)

A

MBH-COVE (Melb BeeHive COVE)
MR pressure
BCU relay
Hand and foot deadmans
Coupler fail
ESB in non active cabs
Overspeed
Vigilance system

124
Q

1500v equipment (6)

A

Panto
Surge arrestor
High voltage container
HSCB
Traction container
SIV

125
Q

MR pressure bwteen 600 and 850 steps (3)

A

Locate leak
Check tow cock
Ensure compressors running

MT Trainee (50 decks)

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