FDCL Flashcards
what does the PLC do
controls the air that keeps the doors closed or lets them open
what will cause a FDCL
second BIVICS open
open circuit in train cable
auxiliary CB tripped in another cab
PLC tripped in any trailing car (no light if it’s in lead)
train uncoupled and sensing it’s still coupled
rear marker lights in the wrong position
control CB tripped in rear cab
saloon door/s failing to close
if a PLC trips
must be reset or door loop bypass
what do you do if the train thinks it’s still coupled
my bypass
if the auxiliary is tripped in another cab
gotta find it and reset it or bypass
seconds BIBICS open
close or bypass
open circuit in a train cable
if there is no obvious cause it may be this
have to door loop bypass
items connected to the PLC
StFDDDD
1 drivers door indicator lights
2 door closing relay
3 door chimes (60 seconds)
4 secondary release features (eg something is caught)
5 foot pilot valve (also connected to the control governor bypass push button)
6 door loop bypass
what is your indication for a PLC tripped
car 1- no light
cars 2-6 FDCL
when you have a FDCL how do you know the door status
you can’t
how do you operate door loop bypass
operate the key switch
detrain
TMM
at no time may you have passengers with a door loop bypassed
what fault light do you get if bypass operated
safety system isolation light
if one saloon door is defective
likely mechanical
fixed with a temporary locking device
one side of doors of a car defective
electrical or pneumatic
check the circuit breakers in the electrical cabinet above door 3 marked doors A or doors B- if it doesn’t look electrical check pneumatics, may need RTA
all doors on a car defective
pneumatic or electrical
check CBs and the door system A and B
