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traction > Siemens Underframe Equipment > Flashcards

Siemens Underframe Equipment Flashcards

1
Q

How is trip lowered? Automatically or Manually?

A

Automatically as soon as cab is activated
However it needs to be reset before EMY brake will release

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2
Q

How is trip powered on a Siemens?
Air
Electrical
or Mechanical?

A

Electrically

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3
Q

How do we know trip has been activated and how can it be reset?

A

Trip reset switch will illuminate RED

RESET procedure:

  1. Train must be stationary
  2. MC must be in 0 (COAST)
  3. Turn trip reset switch to the right and it will spring back
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4
Q

What is the purpose of the Towing unit?

A

It reads to and from the brake unit during a
NON- ELECTRICAL rescue

The Isolation Cock needs to be in line with the pipe

Must be in Brake Pipe Mode (key switch in ‘I’ to be active

  • more info page 10
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5
Q

When operating a Brake Pipe Rescue using the Towing unit how must the trains be coupled?

Electrically
Pneumatically
Mechanically?

A

Must NOT be coupled Elecetrically

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6
Q

When Brake pipe mode is in Off position what does that mean?

A

Brake system on train is operating normally
(Not in rescue, not using towing unit)

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7
Q

When in Read Mode (Towing unit operation) what is the Brake PIPE pressure when brake step in 0 (coast)

A

480 kPa

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8
Q

When in Write Mode (TU1) what are the Brake PIPE pressures at each step of the brake zone?

A

0 (COAST) is 550 kPa

Pressure Gradually decreases as you move to higher braking effort

Emergency brake is 300 kPa or less

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9
Q

What is the purpose of the Towing cock?

A

It is used to reduce the Main Res pressure between the Siemens and the Comeng when performing a Train Rescue

(So Comeng safety valve doesn’t activate due to overcharging)

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10
Q

Main Res pressure when Towing cock is used?

A

700 kPa

(This will cause uncouple light to flash in all cabs)

Gauges in all other cabs on Siemens will show normal MR pressure (850-1000)

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11
Q

What are the 2 valves on the B side of a coupler?

A

Extend Air
Retract Air

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12
Q

What can we check to ensure correct coupling ?

A

Dick is in
Nut is out

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13
Q

What is the purpose of the manual valve on the coupler?

A

To completely isolate the whole pneumatic system of the Dellner coupler

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14
Q

What is the purpose of the extend air valve on the coupler?

A

Stops the electric coupler doors from opening when coupling

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15
Q

What is the purpose of the manual valve retract air on the coupler?

A

Stops the doors from retracing when uncoupling

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16
Q

What is the purpose of the rip cord on the coupler?

A

Allows for mechanical uncoupling (not used by drivers unless emergency )

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17
Q

What is the purpose of the electrical coupler handle on top of coupler?

A

Allows for manual electrical uncoupling (not used by drivers) to uncouple)

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18
Q

What is the purpose of the resistor grids?

A

Used for ED braking
They dissipate heat and energy that cannot be returned to overhead wires

19
Q

What does traction Inverter do?

A

Converts 1500 v DC to Variable 3 phase AC for the traction motors

Controls the operation of the Holding brake

20
Q

What is inside the High Voltage Container?

A

Motors : RHS - HSCB & Ground switch
LHS - BCU

Trailers : RHS - AUX eq.
LHS - BCU

21
Q

What does the Brake Control Unit do? (BCU)

A

It sends electrical signals to the Brake Module to apply / release brakes with pneumatic pressure

It sends electrical signals to the Traction Motors for ED braking

22
Q

Where are the brake Modules located?

A

Near wheels 3 & 7

23
Q

What functions does the Brake Module perform? *

A

Acronym : SPACE in BW

S- service braking
P - park brakes
A - air suspension system
C - cleaning air supply to brakes
E - EMY braking
B - brake blending
W - wheel slide control

(All things to do with air supply to the wheels)

24
Q

Where are the sanders and the sanders I. C.?

A

Sanders: wheels 3 & 6 on motors
I.C . A side of motors near the brake module

Wheels 2 & 3; 6& 7 on T cars
I.C on B side of T cars
Next to battery container

25
Q

Where is the Main res located?

A

No 2 end on both M and T cars

26
Q

What does the air compressor supply air to?

A

Braking and suspension systems

27
Q

How do you know if compressor pressure switch is isolated?

A

Its not visible

When not isolated it can be seen

28
Q

Where is the self excite button?

A

On the Static inverter container T car
A side

29
Q

What do SIVS do?

A

Convert 1500vDC to 400vAC (3 phase)
as well as 230 v AC (single phase)

Then converted further to 110v DC
to charge batteries, Safety Loop & other safety critical functions

30
Q

What is the purpose of the self- excite button?

A

It allows for manual start up of the Static inverter when not enough battery supply

31
Q

What is Auxiliary container for?

A

It contains control equipment for the SIV system & BCU for the trailer car

32
Q

Battery box location and purpose? *

A

T car B side
4 doors
8 batteries inside (2 per door)
Used for auxiliary power supply

  • Used to raise pantos
    step light
    Cab light
    When train is stabled
33
Q

How are pantos raised? What power? *

Electrically
Pneumatically
Mechanically ?

A

Electro mechanical

34
Q

What is the transition couple locked with & it’s location?

A

T car
5 paddlock

35
Q

What does the sanders I.C isolate?

A

The compressed air from going to the sanders box

36
Q

How do we reset the trip?

A

Key in and on
Trip lowered light illuminates
Put reverser to a driving position
MC to 0 (coast)

37
Q

How do we bypass the trip if it fails?

A

MC to B6
Selector to NEUTRAL
Master key to OFF
Key out
Operate Trip bypass key switch to I
Remove key
Reactivate cab
Check if EMY brake releases with selector to driving position & MC in O
If it goes to holding brake then it ok

Of not

Safety loop must be bypassed also

38
Q

When will happen if the MC is in B1 or B2 when stationary?

A

The Vicers acknowledgement button will flash after 35 seconds

39
Q

How do we reset VICERS?

A

0 km/h
MC in 0
Remain stationary for 10 sec
Push VICERS button

40
Q

How do we isolate VICERS WHEN TRIP or Safety Loop is bypassed?

A

It self isolates in these situations

41
Q

When do we isolate VICERS with the key switch?

A

When

A fault indicator remains illuminated

A VICERS fault cannot be reset and train cannot move

If FMP instructs driver to do so

42
Q

What indications do you get that VICERS has been isolated?

A

VICERS fault light illuminates

43
Q

If a local traction system fault light illuminates what CB has tripped?

A

Train stable
HSCB
Light control

44
Q

When testing VICERS on a prep how many times will the safety loop fault light flash

(& BC rise to EMY pressure and lower to holding pressure) ?

A

2

traction (28 decks)

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