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92 Cards in this Set
- Front
- Back
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What is the BCU? |
The brake control unit (computer) |
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What type of brake uses oil to create a dynamic brake? |
Hydrodynamic brake |
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What type of brake uses air? |
Electromagnetic friction brake |
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Which two types of brakes are blended by the BCU as needed? |
Dynamic and air brake |
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Which brake kicks in when reducing below 50kph? |
The air brake |
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What are the passenger doors on a Vlocity called? |
Slide plug doors |
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What is the primary suspension on a Vlocity? |
Springs |
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What is the secondary suspension on a Vlocity? |
Air bags |
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If the spring suspension fails, can the train continue? |
No |
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If the air bag suspension fails, can the train continue? |
Yes, at maximum 80kph |
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What do levelling valves do? |
Ensure constant vehicle height |
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What are the powered and not-powered bogies called? |
Motor bogie Trailer bogie |
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What 6 things does the compressed air serve? |
Service brakes (Spring) park brakes Air bag suspension Toilets Coupler actuation Whistle |
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What type of propulsion system does a Vlocity have? |
Diesel hydraulic |
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What type of auxiliary power generation does a Vlocity have (for functions other than propulsion)? |
Diesel electric |
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What is the length of a 3-car Vlocity unit? |
75.22m |
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How many air compressors are on a 3-car unit? |
3 |
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How many volts and hertz are an air compressor? |
415 V 50 Hz |
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What pressure is the air compressor safety valve set at? |
1000 kPa |
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What is the main res pressure range on a Vlocity? |
750-900 kPa |
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Once the main reservoir is initially charged, and only one compressor is working in the set, when would the other compressors kick in? |
If the main res pressure falls below 700 kPa |
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What are the six reservoirs on each car? |
1x main res for air supply equipment 1x auxiliary res for brake equipment 4x surge res for airbags |
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What is the PBC? |
The Power Brake Controller, the main controller in the drivers desk. |
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What position does the key need to be in for the PBC to operate? |
On |
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What is the SBC? |
The Secondary Brake Controller (for the Auto air brake), the red handle to the left of the PBC that is used when there is a BCU failure. |
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What are the 4 positions of the reverser? |
Off, Forward, Neutral, Reverse |
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How much pressure does the hill start button apply into brake cylinders? |
150 kPa |
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When should the hill start button be used? |
When starting on a gradient (but good idea to use all the time) |
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Where are spring park brakes fitted? |
On each axle, and diagonally opposite from each other on the bogie. |
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How are spring park brakes applied and released on all cars? |
From switch on drivers panel |
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Where is the button for the spring park brake for just that car? |
Beside the cab fridge |
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How is the spring park brake manually released? |
With the manual release handle on the ground (one out of two is locked) |
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Do the spring park brakes come on automatically when brake pipe air is dumped? |
No, they operate directly from the main reservoir. |
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What are the two duplex gauges on the drivers desk? |
Brake cylinders (1-motor bogie, 2-trailer bogie) Main res/ brake pipe |
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What are the two types of brake equipment? |
Electro-pneumatic friction brake (calipers and brake pads onto brake disc) Hydro-dynamic braking (uses transmission oil as a retarder) |
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In what ways can the emergency brake be initiated? (6) |
PCB to EMERGENCY Vigilance not acknowledged SBC to EMERGENCY (when cut in) Emergency brake cock Emergency brake button Brake pipe damaged or opened |
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What are the three main things a Vlocity will do when wheel slip/slide happens? |
Detects & adjusts braking/power. Auto sand Warning lights |
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What are the 4 main components of the auxiliary power supply system? |
Auxiliary diesel generator 24V DC battery unit Battery charger/inverter DC battery jumper |
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What kind of power does the 85kW auxiliary diesel generator provide? |
415/240V AC 3-phase 50Hz electrical power |
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What happens if one car’s auxiliary diesel generator fails? |
Power is supplied from other car(s). |
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If power is supplied from another car when an auxiliary generator fails, which non-essential functions may be disconnected? (3) |
Toilet hand dryer Drivers heater Cab GPOs (air con reduced) |
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Which two locations can the auxiliary diesel generator be turned on/off? |
Drivers entry panel (on ground) On desk panel |
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What is the function of the battery charger? |
To convert AC to DC for battery charging and normal DC loads (eg. radio) |
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What are two main functions of the 24V battery unit/box? |
To start the engines Support DC loads of battery charger fails |
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Where can the batteries be switched on/off? (like a battery knife switch) |
Drivers entry panel (on ground) |
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What is the DC battery jumper for? |
To jump start the auxiliary and traction engine. |
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What does the interlock on the battery jumper plug function ensure? |
The car cannot be moved while the plug is connected. |
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What creates traction power for the axles? |
Diesel engine. |
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What is the idle speed? |
750 rpm |
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What is in the hydrodynamic transmission that can be used to slow the train? |
Oil |
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What does the ‘standstill detector’ do? |
Prevents direction being changed while vehicle is moving. |
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‘Traction Safe’ operates to prevent the vehicle moving when? (5) |
Battery jumper cable connected Brake pipe below 350kPa Doors are open VC penalty brake activated Penalty brake isolated (restricted to 130kph) |
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Traction monitoring system monitors the temperature of what? |
Traction engine oil Transmission oil Coolant |
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What are the three visual indications (fault tiles) that may illuminate for the traction engine protection system? |
Fault (kaput) Warning (about to be kaput) Maintenance |
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What are the two levels of protection on the engine protection system? And what are their corresponding fault tiles? |
Enable - Warning Shutdown - Fault |
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What does the engine protection system monitor for? (7) |
High manifold temp High engine coolant temp Low coolant level Low coolant pressure Low oil pressure (shut down) Engine overspeed (shut down) Engine fire (shut down and fuel supply cut)
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How can the driver determine the cause of a traction engine shutdown? |
Check in the Cab Electrical Cabinet |
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Do the traction engine and auxiliary generator get fuel from the same tank? |
Yes |
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What are the two types of fuel gauges? |
Analogue and electrical |
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Does the driver need to prime the fuel system before starting the engine? |
No, it automatically primes for 30 seconds. |
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What happens to the lighting when the diesel generators are not working? |
Emergency lighting |
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When travelling up to a speed of 110kph, after how many seconds does the VC operate a visual alarm, audio alarm and a penalty brake application? And between 110-160kph? |
50, 5, 5 27-50, 4, 3 |
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How long before the vigilance can be reset after a penalty brake? |
30 seconds |
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What happens if the driver does not reset the vigilance after 2 minutes? |
An emergency radio call to Train Control |
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When is the vigilance suppressed? (3) |
Brake cylinder above 200kPa During emergency braking When cab is not active |
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What speed must the train be doing for the fire protection system to discharge? |
Under 5kph |
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What two things will the driver notice if the system detects a fire? |
‘Fire underframe’ fault lamp Traction and auxiliary engines will shut down |
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When might the driver check the fire protection panel? |
During prep |
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What are the positions on the PBC (Power Brake Controller)? |
6 notches OFF Minimum to Full braking |
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Where is the key for manual release of the spring park brake? |
Tool box |
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How is a spring park brake reset after manual release? |
Cab switch: ON, OFF, ON |
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How is the spring park brake reset after manual release if there is no battery power, but is sufficient main res air? |
With the park brake solenoid valve beside the fridge. |
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When coupling to a dead Vlocity, should the battery switch be ON or OFF on the dead unit? |
ON. Otherwise the circuit breaker will trip. |
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How long after cabs are deactivated so the engines shut down? |
20 minutes |
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When using the transition coupler, what should be done initially with the main res and brake pipe cocks? |
They must be closed |
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When using the transition coupler, should the red cock on the coupler head be in electrical or non-electrical position? |
Non-electrical |
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How long must the Passenger Emergency Alarm (PEAs) be pressed for? |
3 seconds |
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If the PEAs alarm sounds while you’re at the platform, should you depart? |
No |
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If the emergency brake cannot be reset, is two person operation required? |
Yes |
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If the driver has had to remove the train skirt and cannot replace it, in driver only operation, what should they do? |
Leave it behind, and send fault report that includes location of skirt. |
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If the VC is isolated, is 2-person operation required? |
Yes |
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If the main res is isolated, is 2-person operation required? |
Yes |
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If a traction engine shuts down while running, what should the driver do? |
Acknowledge alarm Report fault |
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What is the coupler called on a Vlocity? |
Scharfenberg |
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What are the primary and secondary suspension systems on a Vlocity? |
Primary - spring Secondary - air-bag |
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What provides the air to the air bags? |
Surge reservoirs |
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If an airbag is deflated, what is the maximum speed you can drive? |
80 kph |
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What is the air compressor driven by? |
415V AC 50Hz motor |
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If wheel slide occurs during normal braking, what does the brake control unit (BCU) do? |
Alters brake cylinder pressures to obtain optimum adhesion between wheels and rails. |
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What does intercom mode allow? |
Crew to talk to crew in other cabs. |
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When using intercom mode, is the audio received through speaker or in handset? |
Handset only |
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What does a flashing brake cylinder tile mean? |
Bogie has been isolated |
