Cab Equipment Flashcards by Sophie Masterton

What safety equipment does a Siemens train have? (6)

First aid kit
ATWs
Emergency Track Circuit Jumper Cable
Red & Green Flags
Fire extinguisher
Switch stick

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What is in the cabinet on RHS of rear cab wall?

Jumper cables
First aid kit
ATWs

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Where is the fire extinguisher?

RHS under drivers desk

Trip CB in panel as well

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Which cabs are first aid kits located in?

ALL

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What is in the Circuit Breaker Panel? (7)

Circuit Breakers

Deadman Test Switch

BP Mode Key Switch & Selector switch

VICERS Isolation Key Switch

Door Loop Bypass

Safety Loop Bypass

Trip Cock Bypass

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What does the Deadmans Test Switch do?

Used to activate Deadman’s Device test mode. Tricks train into thinking it’s moving.

Enables Driver to test Hand and Foot Pilot Valve during train prep

Is active for 60 seconds before automatically switching off

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What happens when the Deadman’s Test Switch is activated?

Switch illuminates

Audible tone

Test takes 60 seconds and automatically turns off

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What is the BP Mode Key Switch & Selector Switch for?

For rescue and recovery

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How many positions does the BP Mode Selector Switch have?

What are they?

0 - Normal
1 - Pushed by other train - Rescued
2 - Pulling other train - Rescuing
3 - Pulled by other train - Rescued
4 - Pushing other train - Rescuing

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What happens when BP Mode is activated?

Corresponding light will flash on the fault panel

Repeater light will flash towards opposing cab

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What is the VICERS Isolation Key Switch for?

When VICERS fault light illuminates use blue VICERS key to turn switch to isolate

Once turned only maintenance staff can turn back with pink key

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What happens when any of the Bypass Key Switches are turned to the ‘I’ position?

Safety System Isolation fault light will illuminate on fault panel

Can only be turned back to normal position by maintenance staff

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What does the Door Loop Bypass Switch do?

Bypass door system in event of defect

When FDCL cannot be rectified

Allows train to obtain traction power irrespective of door positions

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What does the Safety Loop Switch do?

Bypasses DEAD HOL

Deadman’s devices
Emergency Stop button (non-active
cabs)
Automatic coupler relay
Door close relay

Holding brake relay
Over speed relay
Low Main Res. pressure relay

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Does the Safety Loop Switch Bypass everything when it is turned?

Lead ESB still works

EXAM QUESTION

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What does the Trip Cock bypass switch do?

Enables driver to isolate Trip in event of defect

Trip has to be in RAISED Position when CB is tripped

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What happens if Trip Cock or Safety Loop Bypass keys are isolated?

Secondary Safety Circuit Introduced:

MAD button illuminates above 0.2kph

MAD button is pressed to reset timing of the Secondary Safety Circuit

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When Secondary Safety Circuit is introduced how often does MAD button flash and emit a tone?

45 Seconds - for safety circuit

30 if just using as a reminder

????? Cray cray

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How long does the driver have to push the MAD button once it starts flashing?

10 Seconds

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What happens when the Master Key Switch is turned on?

What is the one thing that won’t work?

Cab is activated

All Cab functions can be used - except Train Stable!

Trip lowers - but does not reset

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What positions does the Master Selector switch have?

Reverse

Neutral

Forward

Set Speed

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When do you use Neutral?

When stopped at signal
Cab unattended
To deactivate cab

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What happens to marker lights when Neutral is selected?

They change to RED.

You have to put them manually to WHITE if required

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What happens when you select FORWARD?

Marker lights automatically go to WHITE

Automatic Headlights are on

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How fast will the FORWARD position allow you to go?

Up to 115kmh

What happens if the train goes too fast?

Over speed system will apply the emergency brake over 125kmh

What does the Set Speed position do?

Limits speed to 6kmh Overspeed emergency brakes will activate at 8kmh Automatic headlights are on

What positions does the MCH have?

EMERGENCY BRAKE - B7 BRAKE - B1-B6 0 (COAST) DRIVE - D1-D7

What status must the train be in to operate the MCH?

Key in and on Reverser NOT in NEUTRAL

What status does the train have to be in for the Master Key Switch to be turned on?

Selector Switch (Reverser) in NEUTRAL MCH in FULL SERVICE (B6)

What braking does Emergency Brake use?

Friction brakes ED brake and traction power are isolated

When does holding brake apply?

0.2kmh

What is Holding Brake Pressure?

110kPa

What is Emergency Brake Pressure?

280kPa

What is FULL SERVICE Brake Pressure?

189kPa

If you release the Hand or Foot pilot valve what happens?

If the train is above 0.2kmh a tone will sound and emergency brakes will apply after 3 seconds

What is VICERS comprised of?

Vigilance Control System: - Task linking - Acknowledgement button - Audible buzzer - Fault Indicator - VAV Event Recording: - VM40 Event Recorder - GPS Antenna

How long will the VICERS acknowledgement button flash for? How long will the audible buzzer sound for?

5 seconds Another 5 seconds then emergency brake applies

What happens if you hold the acknowledgement button down too long?

After 5 seconds the emergency brakes will apply

What positions does the VICERS Isolation Key Switch have?

Operate and Isolate Test function is controlled by button on driver console Self-test occurs on train start-up

What happens if there is a VICERS fault?

VICERS Fault light illuminates Must turn turn VICERS Isolation key to ISOLATE Data is still recorded Acknowledgement button will stop activating

What Circuit Breakers are in the panel behind the fire extinguisher on A side of the cab?

GPO Trip Cock Device

How does the Trip raise and lower on a Siemens?

Automatically: Key On - Lowered (but not reset) Key Off - Raised

How do you prevent trip from lowering?

Deactivate cab - CAB OFF - key OUT Pull Trip cock device CB - then it will stay raised when cab is activated

What are 2 positions of master key switch

On and off

What is FULL SERVICE Brake Pressure?

189kPa

What does the Duplex gauge display? What colours?

Red - Main Res. Black - BC

What does the Overspeed Lamp Indicator show?

Illuminates when train has exceeded 119kmh Emergency brakes come on at 125kmh

What does the DDA (dis. Descrimination Act) button do?

Flashes white 5 times then remains steady When you press button CCTV turns on

When does the Cab Speaker automatically turn on?

When PEI is activated

What does the General Fault Indicator do?

Flashes red when there is a train fault.

What is the Auto Door Close Inhibit button for?

Assisting special needs passengers at door 1 and Press button before you remove keys Keeps doors open

What does the uncouple button do?

Indicates cab is in coupled position. Centre cabs are illuminated Also flashes when low main res pressure is present - below 750 (850kPa during rescue)

What does Train Stable button do? (2)

Shuts down computer systems Lowers pantographs - 30 seconds Key must be in OFF position

How do park brakes apply? (3)

When key is in and on turn Park Brake Switch When key is off park brakes will automatically apply Main Res. pressure drops below 350

What positions does the Saloon Light Switch have?

On and Emergency

What does the MAD button do?

Tone every 30 seconds Flashes yellow

How does the Trip raise and lower?

Lowers - automatically when cab activated Raises - automatically when cab deactivated

When do you use Trip Reset switch?

Only when Trip is activated: Trip test SPAD R1S3

What does the Electric Brake Inhibit button do?

Temporarily disables ED braking and enables EP braking Wheel Slip unit automatically switches from ED to EP and operates sanders - button lights up when this happens

What does Critical Fault Light mean?

Unit must be taken out of service

What are the three main reasons Critical Defect Light illuminates?

Friction brake failure Both SIVs fail Wheel slip fault affecting sanders

What CBS can you check if Critical Fault light illuminates?

Friction Brake Monitoring - motors and trailers Static Inverter Monitoring - MCB Trailer

What could cause the maintenance fault Light to illuminate?

Traction - defective or isolated SIV - only one operating Saloon door isolated by door control unit Brake not released (not SPB) HVAC - defective PA - System defective CCTV - system defective

What does Reduced Performance indicator light mean?

One or more motors not powering

What does Compressor Fault indicator light mean?

MR pressure dropped below - 850-1000

Local fault lights… What does the Traction System indicator light mean?

Local traction motor has serious defect Or Train stable, HSCB, Light Control MCB has tripped

What does the Safety System Isolation fault light mean?

A Bypass key Switch has been operated

What does the Fault Acknowledge button do?

Press to acknowledge a fault Will turn from flashing to steady

In the MCB Panel on Rear cab wall what are the CBs that can trip and open safety loop?

SAFE CD Safety loop Auto coupler in centre cab Friction Brake monitoring Emergency Brake valves Cab manned Door Control train line ? Train stable, HSCB, Light Control

Which are the only two that can be bypassed?

Friction Brake monitoring Auto Coupler in Centre Cab

What happens if TCU MCB trips?

Local motor is not available (Reduced performance fault indicator in any cab Traction system fault light on affected motor)

What happens if Panto Control MCB trips?

Train lined Can’t raise/lower any pantos from local cab

What happens if Panto Motor MCB trips?

Local Panto in local cab cannot be raised

What are the Train Lined Fault Indicator Lights?

Safety Loop Critical Defect Maintenance Fault Reduced Performance Door System Compressor Fault

What are the Local Fault Indicator Lights

Brakes Bogie 1&2 Park Brake Bogie 1&2 Vigilance Failt PA HVAC 1&2 Traction System CCTV