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HCMT Traction > Door Systems > Flashcards

Door Systems Flashcards

1
Q

Where are DCUs located?

A

Above LHS of every door

Drivers don’t access

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2
Q

What is the Door Status Loop Circuit?

A

Electrical circuit that monitors saloon and cab doors to make sure they are closed

It is interlocked with traction to prevent movement if doors are in open position

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3
Q

How do you bypass the Door Status Loop Circuit?

A

Traction Interlock Bypass Switch

On rear cab wall

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4
Q

What is the APC?

A

Automatic Passenger Counter

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5
Q

What is ASDC?

A

Automatic Selective Door Control

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6
Q

What does ASDC do?

A

Automatically enables and disables doors when train is stopped at a platform

Prevents wrong side and off platform door releases

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7
Q

What is a Balise Beacon?

A

Yellow bar on the rails on approach to station.

Tells the HCMT:
- Which station
- Length of platform
- Which side the platform is on
- Distance to stopping mark

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8
Q

How does the train read the Balise Beacon?

A

One beacon reader on each Tc Car.

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9
Q

When do Stopping Aid Cameras come on?

A

Automatically 10 metres prior to stopping mark

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10
Q

Where does the driver have to stop the train?

A

With stopping mark between the two red lines - ideally on the green line

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11
Q

What conditions have to be met for the stopping aid cameras to come on?

A

The beacon that is read must match the expected station in the PIDS control.

This ensures cameras don’t activate when running through express stations

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12
Q

What can you do if stopping aid cameras don’t come on automatically

A

Manually turn them on with the SDU

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13
Q

What happens if driver selects wrong side doors?

A

Alarm will appear

Doors will remain locked

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14
Q

What happens if driver over or under shoots platform?

A

10 metres or more - doors will be unavailable for use and remain grey

Less than 10 metres - ASDC inhibits doors not correctly aligned with platform. Other doors can be released

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15
Q

What does Auto-Door Close Inhibit button do?

A

Prevents automatic closing of saloon doors after 60 seconds

Applies to selected side of train:
Door 1st and 3rd on Tc
Door 1st on DMp

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16
Q

What happens if passengers continuously press button on door before driver has released them?

A

Doing it once Causes a delay of 0.5 seconds.

If they keep doing it the door will become inoperative for an extended period

Drivers yellow Door Release button will extinguish for that period of time

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17
Q

What announcement can you make to passengers to assist them to get off the train.

A

Tell them to stop pressing the button and wait until it turns green

18
Q

If FDCL continues, what does it mean?

A

Doors that have not been proved closed … will continue to be illuminated red on the pictogram

19
Q

How many times can you attempt to close doors?

A

3 times

Then yellow alert will come up

20
Q

What is a Substandard Beacon Read?

A

When one of the two beacon readers fails to read the track mounted Balise Beacon

21
Q

What will the train do if it gets a substandard beacon read?

A

Assume platform is shorter and automatically keep either first or last saloon door inhibited when the train stops at platform

22
Q

What does the driver do in the event of a substandard beacon read?

A

PA - inform passengers to move to next available door

Operate saloon doors as normal

Report as per FMP

23
Q

What does driver do if wheelchair ramp needs to be deployed and the first door is inhibited?

A

Press ASDC Override button

24
Q

What is ASDC Beacon Read Failure?

A

Both beacon readers fail to read the track mounted Balise Beacon

or

Balise Beacon is defective

25
Q

What happens during a ASDC Beacon Read Failure?

A

Doors will be inhibited

Stopping Aid Cameras will fail

eTIS will raise alert informing driver to override

26
Q

How does ASDC Override Button work?

A

Determine which side platform is on and press corresponding ASDC button

No alarm will be given if incorrect side is overridden

TMS will indicate the chosen side as green on the pictogram

27
Q

What is the ASDC Override Procedure?

A

PA - short delay before doors released

SDU - observe cameras to ensure leading and rear cars aligned with platform

Door - open cab door on platform side to confirm platform available, close cab door

Button - press ASDC Override button on correct side
- Select first car
- Select last car
- Accept selection
- Check Green door indications on HMI are correct
- Press door release for platform side
- Report fault to Metrol

28
Q

Where are the DERs?

A

Every saloon door

External - RHS

29
Q

What are DERs also referred to as?

A

EED - Emergency Egress Device

30
Q

What are external DERs also referred to as?

A

EAD - Emergency Access Device

31
Q

When is the DER not available?

A

When train is stabled

When HCMT is remotely started

32
Q

What happens when DER is pulled when train in motion?

A

Intercom and CCTV activated

Level 3 EED alert on affected door on SDU

eTIS will determine whether stationary or in motion, if in motion door will remain locked

33
Q

What happens when DER pulled when train is stationary?

Exam … how long?

A

Intercom and CCTV activated

Level 3 alert on HMI

Driver has 20 seconds to allow or inhibit door release

Level 2 alert - With 10 seconds remaining

If no action taken DER will be available to manually open door

34
Q

What does the DER Inhibit Button do?

Exam… how long does it inhibit for

A

Press to inhibit opening of doors by DER for 120 seconds

Can be pressed multiple times

Timer resets to 20 seconds if train moves off and becomes stationary again

Driver can make DER available by pressing Cancel DER Inhibit button at any time

35
Q

What happens when external DER is activated?

A

Level 1 Alert

Driver must acknowledge alert on HMI

36
Q

How do you Reset the door after a DER has been pulled?

A

Reset the handle

Manually open door and push shut with momentum

Return to cab and press door close button

Check HMI and confirm door is closed

37
Q

What does the cab EAD do?

Exam … how long?

A

Button located adjacent to cab door which allows door to be opened from outside in event of emergency

Hold down for 10 seconds

38
Q

Can driver override cab EAD?

How long for?

A

Yes

Press EAD Override button
“Car Release Inhibit” button

Inhibits for 5 minutes

39
Q

Where are the IFDs?

A

DMp - No.2 end

DT - No.1 end

40
Q

Can passengers open fire doors if they are close?

A

Yes - prior to temperature reaching 120c

41
Q

When are the fire doors closed?

A

When smoke is detected or train is stabled

42
Q

Where are Beacon readers in train?

A

One on each Tc car

HCMT Traction (12 decks)

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