Gateway Revision

Question 1

Doors Loop Bypass

Answer 1

Used when we cannot get an all train doors closed & locked signal.

If the issue is preventing the door from closing. The trainset may need to be removed from service.

1..Detrainment of the train is required
2..Train must be taken back to the depot with Doors Loop Bypass enabled.
3..Operate at no more than 40km/h to allow the the train to move in and out of the stations

Question 2

Doors Enable Bypass

Answer 2

If the train is docked correctly and the doors open relay is not achieved the doors enable bypass is used to select the correct platform and the doors open/close buttons are used to open the train doors.

Question 3

ATC Bypass

Answer 3

When using ATC Bypass the train must be in RM mode
Communication with the CBTC is cut meaning it is no longer communicating with the ATS.
Communication with TC is limited to axle counters and the train can enter another train’s LOA
Maximum speed is guaranteed by the TMS
Master controller & mushroom EB are still available

May be used when…
Coupling
Opening doors with doors enable
Cannot release signalling EB
ATC not operating
Sleep a train that is not docked correctly

Question 4

Carborne Controller

Answer 4

Continuously communicates with the signalling system sharing all information it gathers from the onboard subsystems

Question 5

Carborne Controller main functions

Answer 5

UTO wake up and sleep functions
Self initialisation and test procedures
Process movement authorities
Train Motion
Train speed
Opening & Closing doors
Handling faults & failures