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Metro Traineeship > Siemens Traction > Flashcards

Siemens Traction Flashcards

1
Q

If the ED brake drops out, what indication does the driver receive?

A

ED Inhibit button will illuminate

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2
Q

Which unique miniature circuit breaker is in a DMA car?

A

PA MCB

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3
Q

Which unique miniature circuit breaker is in a DMB car?

A

CCTV Recorder MCB

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4
Q

What are the available settings of the saloon lighting? (2)

A

Normal and Emergency

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5
Q

The functionality of the pilot valve is tested by what means?

A

The Deadman’s Test switch

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6
Q

Where is the trailer car MCB fault panel located?

A

Right side of No. 2 door

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7
Q

What is the roof-mounted equipment on a motor car? (4)

A
  • Pantograph
  • Antenna
  • Surge arrestor
  • HVAC
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8
Q

What equipment is found on the roof of a trailer car?

A

HVACs

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9
Q

What force raises and lowers pantographs?

A

Electro-mechanical force

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10
Q

What is the purpose of the surge arrestors?

A

To protect the high voltage equipment

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11
Q

What is the purpose of the high speed circuit breakers?

A

To safely disconnect traction equipment from the overhead in disturbances such as over-current, traction faults or short circuits

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12
Q

What equipment do the static inverters supply? (5)

A
  • HVACs
  • Battery charger
  • Air compressor
  • Traction control unit
  • 240v AC GPOs via stepdown transformers
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13
Q

What equipment does the battery charger directly supply? (8)

A
  • Direct charge to batteries
  • door system
  • internal lighting
  • communication system
  • external lighting
  • traction control equipment
  • other control circuits and equipment
  • safety loop
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14
Q

Where is the pantograph crank handle located?

A

MD car, upper right of door 2

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15
Q

How can a saloon door be manually isolated?

A

Triangle tri-key

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16
Q

Saloon doors automatically close after how long?

A

60 seconds

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17
Q

What will happen if the safety loop is opened? (2)

A

Emergency brakes will apply and the traction system will be isolated

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18
Q

What force applies the emergency brake?

A

Electro-pneumatic (friction) braking

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19
Q

What position must the master key switch be in to stable a train?

A

Off

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20
Q

How is the emergency brake reset?

A
  • Train brought to stand
  • Master controller handle placed to 0
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21
Q

If the safety loop if by-passed, what equipment will be isolated from the safety loop? (5)

A
  • Main res pressure relay
  • brake control unit major event relay
  • hand and foot deadman’s devices
  • coupler fail relay
  • emergency stop buttons in non-activated cabs
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22
Q

How long is the test mode available for when performing the deadman’s device switch test?

A

60 seconds

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23
Q

When does CCTV automatically shut off in the driver’s cab? (2)

A
  • After 150 seconds
  • When the train begins to move
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24
Q

How many safety valves are fitted to the pneumatic system?

A

Two

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25
Q

What type of braking is used on trailer cars?

A

EP/friction brakes

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26
Q

What is emergency brake cylinder pressure?

A

280 kPa

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27
Q

What is holding brake cylinder pressure?

A

110 kPa

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28
Q

what is main res operating pressure?

A

850 - 1000 kPa

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29
Q

The park brake automatically applies when the main res falls below which pressure?

A

350 kPa

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30
Q

What wheels have park brakes?

A

3 and 7 of all cars

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31
Q

The safety loop will de-energise if the park brake is applied when the train’s speed is over…?

A

5km/h

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32
Q

How do we activate the Secondary Safety Circuit?

A

Turn the Safety Loop By-pass Key Switch to the no 1 position

Turn the Trip By-pass Key Switch to the no 1 position

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33
Q

How can the Siemens Safety Loop be reset?

A

Placing the Master Controller to 0

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34
Q

Can a single driver conduct a continuity test when coupling two trains?

A

Nope

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35
Q

Does each brake unit operate independently?

A

Yes

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36
Q

What functionality tests are performed on a mainline prep? (5)

A
  • Brake test
  • Traction cut-out test
  • Vigilance devices test
  • VICERS test
  • Trip test
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37
Q

EP braking is determined and controlled by which piece of equipment?

A

BCU

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38
Q

True or false: each brake module supplies braking effort to one bogie

A

True

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39
Q

When attaching, how far should the first unit stop from the second unit?

A

1m

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40
Q

Can an attach be performed with two active cabs?

A

Nope

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41
Q

Upon stabling, what switch light should a driver be checking for illumination in each cab?

A

Park brake turret switch light

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42
Q

What function does the Pressure Limiting Valve serve?

A

Adjusts pre-control pressure to relay valve

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43
Q

What is the function of the Relay Valve?

A

Charges and vents air pressure to and from brake cylinders

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44
Q

What does the Analogue Converter do?

A

Converts processed electronic signals from the BCU into pre-control pressure sent to the relay valve

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45
Q

For the ED brake to drop out, the braking effort must fail below which value before the TCU demands the EP Brake to take over?

A

90%

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46
Q

If the ED brake is lost, how can a driver reset the ED brake?

A

Master Controller to 0 or Power for one second, then return controller to braking position

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47
Q

When is the sanding system utilised?

A

Even the TCU senses wheel slide

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48
Q

How is the VICERS reset? (4)

A
  • Bring train to stand
  • Master Controller to coast
  • Leave train like this for 10 seconds
  • Press VICERS acknowledgement button
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49
Q

What is the purpose of the Towing Unit?

A

to read and write brake pipe pressure during non-electrical rescue

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50
Q

Is the towing cock open or closed in train rescues?

A

Open

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51
Q

What is the purpose of the towing cock in a rescue situation?

A

To reduce Main Res pressure to 700 kPa

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52
Q

What does the Traction Control Unit do? (2)

A
  • Relays info from master controller to the traction motors (via traction inverter)
  • releases/applies holding brake
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53
Q

What are the positions of the Master Selector switch? (4)

A
  • Neutral
  • Forward
  • Reverse
  • Set speed
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54
Q

What needs to be completed before the Master Selector can be set to Forward (2)

A
  • Master controller to B6
  • Key in and on
55
Q

What indications does a driver get when a PEI is initiated?

A
  • Audible tone sounding through cab speaker
  • Flashing Red Emergency intercom button on drivers console
56
Q

What are the positions on the Master Controller handle? (4)

A
  • Emergency
  • Brake
  • 0
  • Drive
57
Q

What happens if the pressure governor has been isolated?

A

It will run continuously

58
Q

What are the three components of the air suspension system?

A
  • levelling valves
  • air bags
  • surge reservoirs
59
Q

10 components of the Safety Loop?

A
  • Loss of 110v DC
  • overspeed relay
  • MR relay under 600kPa
  • coupler fail
  • ESB
  • Master controller to EMY
  • trip
  • critical fault in BCU
  • dead man’s switch
  • VICERS
60
Q

What’s the speed threshold?

A

0.2 km/h

61
Q

Is wheel slip protection active during emergency braking?

A

Yes

62
Q

What equipment on a Siemens use compressed air? (6)

A
  • Whistle
  • Air suspension
  • Service (friction) brake
  • Park brake
  • Aux reservoirs
  • Main reservoir
63
Q

What pressures does the pressure governor start and stop the air compressor at?

A

Starts compressor at 850 kPa, stops compressor at 1000 kPa

64
Q

What happens if one static inverter is not working?

A

Air conditioning will operate at 50% – other equipment supplied by static inverters will operate as usual

65
Q

How will a Static Inverter fault be displayed to a driver?

A

Maintenance Fault and Unit light will illuminate on Fault Panel of the active cab, and the SIV light will illuminate on the fault panel of the affected T car

66
Q

What are the steps to raising the pantographs? (7)

A
  • Master key in and on
  • check park brakes are applied
  • wait until all buzzers have stopped sounding
  • press Pantograph Up button
  • Check line voltage indicator is illuminated
  • Check Panto Up button extinguishes
  • Visually confirm pantos have risen.
67
Q

What two ways can the pantographs be lowered?

A
  • Stable button
  • Panto down button
68
Q

Can you use the Panto Down button to stable the train?

A

No – you will drain the batteries you dingus

69
Q

How do we lower pantographs via stable button?

A
  • Have master controller key OUT of key switch (park brake light on)
  • Press stable button
  • Ensure pantos have lowered and line voltage light extinguishes
70
Q

Where is the manual pantograph crank located?

A

on A side at the number 2 end of motor cars (to the right of door 2)

71
Q

How do we manually isolale doors?

A

with triangle tri-key, in the pelmet above each door

72
Q

How many times will doors attempt to close, and at what interval?

A

3 times, at 3 second intervals

73
Q

How long does the audible door close warning tone go for?

A

4 seconds

74
Q

Where are DERs located?

A

To the left of each door

75
Q

What indications does a driver get if a DER is activated? (3)

A
  • Audible warning buzz in cab
  • Flashing door closed light
  • DER indicator will illuminate
76
Q

Which circuit breakers will cause the emergency brake to apply? (6)

A
  • Door control train lined
  • Friction brake & monitoring
  • Auto coupler control in lead centre cab
  • Cab/Train manned
  • Emergency brake valve
  • Safety loop
77
Q

The emergency brake can be manually applied by: (4)

A
  • Emergency stop buttons
  • Master controller into emergency
  • Deadman’s switch activates
  • Master key turned to OFF
78
Q

How do we reset the trip? (5)

A
  • key in and on
  • observe Trip Lowered light illuminated
  • Reverser to a driving position (FWD, REV or set speed)
  • Master controller to 0
  • Observe brake cylinders have released to holding pressure (110 kPa)
79
Q

When operating on the secondary circuit, how often will the MAD button demand attention? (flash and emit tone)

A

Every 45 seconds, you then have 10 seconds to acknowledge it.

80
Q

What conditions does the cab need to be in to perform a VICERS test? (4)

A
  • Train must be stationary
  • Cab must be active
  • Reverser in FWD
  • Master controller in Coast
80
Q

How many disability discrimination act alarms are there on a Siemens?

A

4 – directly behind each cab

81
Q

How long does the CCTV activate for, if someone has pushed the DDA request button?

A

10 seconds

82
Q

Where is the whistle isolating cock located?

A

In a panel in the driver’s console to the left of the driver’s seat

83
Q

Where is the Trip Circuit Breaker located?

A

Behind the panel with the fire extinguisher

84
Q

How do we activate the Towing Unit?

A

Brake Pipe Mode Key Switch set to 1

85
Q

When is a Towing Cock used, and what does it do?

A

Used when coupling a Siemens to a Comeng. It lowers Main Res pressure between cab and coupler to 700 kPa

86
Q

What reservoirs are at no 1 end?

A
  • Aux res
  • Air suspension res
  • Surge reses
87
Q

What reservoirs are at no 2 end?

A
  • Main Res
  • Aux res
  • Air suspension res
  • Surge reses
88
Q

What’s in the High Voltage container?

A
  • HSCBs
  • Brake control unit
89
Q

How many sander boxes are on motor cars, and what wheels are they on?

A

Two – on wheels 3 and 6

90
Q

Where is the main circuit breaker panel located?

A

Above the OJT seat

91
Q

What is the maximum speed allowed on Set Speed?

A

6 km/h, however at 8km/h the emergency brake will apply

92
Q

What speed is the Overspeed system set to activate the emergency brake at?

A

125km/h

93
Q

What will happen if the Deadman’s Switch is not set and the train is above 0.2km/h

A

A tone will sound for 3 seconds and then the emergency brake will apply

94
Q

At what speed will the Over Speed light illuminate and tone sound?

A

119km/h in FWD, 6km/h in Set Speed

95
Q

How many times will the DDA button flash white before remaining steady?

A

5 times

96
Q

What is the Uncouple button indicating when it is steady red and flashing red?

A

Steady red – the train is coupled to an adjoining unit

Flashing red – main res pressure has dropped below 850 kPa

97
Q

When do park brakes automatically apply?

A

When master controller key is turned off

98
Q

Under normal operation, how often does MAD button emit a tone?

A

30 seconds

99
Q

What are the three main causes for a Critical Fault Light to illuminate?

A
  • Major failure of friction brake
  • Loss of auxiliary power (both SIVs have failed)
  • Wheel slip fault
100
Q

What are the main causes for a Maintenance Fault Light to illuminate? (7)

A
  • Defective traction system
  • Defective static inverter
  • Defective saloon door that has been isolated
  • Brake not released on a unit
  • Defective HVAC
  • Defective PA system
  • Defective CCTV system
101
Q

Does the Compressor Fault Light tell us if the compressor is faulty?

A

Lol, no. It illuminates when air pressure drops below the pressure switch setting and air pressure is not recovered to normal main res settings.

102
Q

When would the brake pipe mode indicator begin to flash in the driving cab?

A

When the switch has been turned for the purposes of train recovery or rescue

103
Q

How long does the Electric Brake Inhibit button isolate the electro-dynamic brake for?

A

5 minutes

104
Q

What are the three bypass key switches?

A

Door loop bypass, safety loop bypass, trip bypass

105
Q

How many positions on the brake pipe mode key switch?

A

5
(0 to 4)

106
Q

What are the positions on the mode key switch?

A

0 - normal
1 - pushed by other train
2 - pulling other train
3 - pulled by other train
4 - pushing other train

107
Q

What happens if the Shutdown Delay MCB trips when the train stable button is operated?

A

You won’t be able to stable the train

(pantos won’t lower on unit with tripped MCB, SIVs won’t shut down, saloon lighting will stay on)

108
Q

How do we divide a train with 1 driver? (long answer, familiarise – not memorise)

A

CHECK:
- No flags, tags, banners
- Pantos are raised
- train is in correct position

IN CENTRE CAB:
- Check for TMMs/notices
- Activate cab
- Ensure emergency pressure in cylinders
- Park brake is illuminated
- Press uncouple
- Observe uncouple button extinguish

Then change ends on same unit and toot toot away

109
Q

How do we perform a safety loop continuity test after attaching?

A
  • Make lead cab active
  • Call centre cab
  • Master controller to 0, hold pilot valve
  • Master controller to EMY
  • Master controller to 0
110
Q

Are the train’s cab doors included in the Door Loop system?

A

Yes

111
Q

What pre-cab visuals do we perform in a train prep? (8)

A
  • TMMs and notices
  • MCB panel and bypass key switches
  • Cleaner’s key
  • Check PB applied
  • Other Cab Active light
  • ESB
  • First-aid kit
  • (*centre motors only - Uncouple light illuminated)
112
Q

How do we perform a train start-up? (7)

A
  • Key in and on
  • Listen for audible tones
  • Once silent, press Panto Up
  • Observe pantos externally
  • Observe High Voltage light on, Panto Up light extinguished
  • Check PB applied
  • Ensure saloon lighting on
113
Q

What is to the right of doors 2 in motor cars and trailer cars?

A

Motor cars = Panto cranks
Trailer cars = MCB panels

114
Q

What’s our High Voltage equipment? (7)

A
  • Pantographs
  • Antenna
  • Surge arrestors
  • HSCBs
  • Grounding switch
  • Traction inverter
  • Static inverter
115
Q

What’s our 400v AC voltage equipment?

A
  • Battery charger
  • Air compressor
  • Traction control unit
  • HVACs
116
Q

What are the train-lined fault lights? (6)

A
  • Safety loop
  • Critical defect
  • Maintenance
  • Reduced performance
  • Door system
  • Compressor
117
Q

What circuit breakers will give us an emergency brake when tripped? (6)

Which two can be bypassed? **

A
  • Safety Loop
  • Auto coupler control **
  • Friction brake and monitoring **
  • Emergency brake valves
  • Cab train/manned
  • Door Control Train Lined
118
Q

How many PEIs in each saloon?

A

2 (next to doors 1 and 2)

119
Q

What position does the selector switch/controller need to be in to remove the key?

A

Selector switch in neutral, controller in B6

120
Q

How long after losing the pilot valve will the emergency brake apply?

A

3 seconds (one audible beep per second)

121
Q

What does the Reduced Performance fault light indicate?

A

One or more traction systems on a unit has become defective

122
Q

What is the ED brake inhibition button used for?

A

To test the operation of the ED brake by isolating the ED brake. Used by maintenance

123
Q

How many circuit breakers in the cabinet?

A

36

124
Q

When the safety loop is bypassed, does it bypass the equipment on the safety loop?

A

Nope

125
Q

What does the Safety Loop Bypass switch bypass?

A
  • Pilot valves
  • Low MR
  • Holding brake relay
  • Door closed relay
  • Overspeed
  • BCU major event relay
  • Auto coupler relay
  • ESBs in non-active cab
126
Q

Where are HSCBs located?

A

In the High Voltage container

127
Q

What voltage do GPOs use?

A

240v AC via stepdown

128
Q

How is the primary PA system operated?

A
  • Press “Cab to Saloon”
  • Use cab microphone and press “PTT”
129
Q

What are the two safety valve settings?

A

Between compressor and air dryer = 1100 kPa

Between air dryer and main res = 1050 kPa

130
Q

What systems use compressed air?

A
  • Main res
  • Aux res
  • Air suspension res
  • Horn
  • Park brake
131
Q

What supplies the Air Bags and what is their function?

A

Supplied by Surge Reservoirs, supplies air directly to air bags when unbalanced

132
Q

Function of levelling valves?

A

Inflate/deflate air bags according to load

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