FDCL and PLC

Question 1

What will cause a FDCL (8)

Answer 1

• open circuit in train cable
• marker light switch in wrong position
• defective coupler sensor
• second BVICS open
• door fails to close
• control CB tripped in trailing
• aux CB tripped in trailing
• PLC tripped in trailing

Question 2

What is connected to the PLC? (6)

Answer 2

• door indicator lights
• door chimes
• door loop bypass
• secondary release
• door closing delay relay
• foot pilot valve