GETTING STARTED WITH ROUTE RELAY INTERLOCKING - PART 6

BUTTON RELAY

3) WNR AND WNCR CIRCUIT

- Point Button Relay and Point Button Normal relay or Point Button Checking 
  Relay

- The text which is written in violet color ,That we will discus in future lesson

- WNCR is normally a picked up relay and drops when any one of the following 
  button is pressed(For now and for the above circuit consider only point no 1
  i.e 51WN ).

1. Point :example 51WN
2. Crank Handle : CH1NR
3. LC Gate : LXN
4. Siding: KLN
5. Common Point Button(Normal) : NWWNR1
6. Common Point Button(Reverse) : RWWNR1
7. Emergency Point Operation Button : EWNR, EWNPR

- Suppose we pressed point button 51, When the point button is pressed, point button relay WNR is energized provided the following condition are met.

1. All other WNR are in dropped(↓) condition
2. All CH button relay in ↓ condition
3. LC gate Button relay are in ↓ condition
4. KL Siding button relay in ↓ condition
5. GNCR (↑), UNCR(↑), SMR(↑)