RRI LAY OUT WITH ALL BUTTONS FOR SIGNALS,POINTS&ROUTES

RRI LAY OUT WITH ALL BUTTONS FOR SIGNALS,POINTS & ROUTES

Indian Railway Signalling Railway Signalling Diagrams

RRI LAY OUT WITH ALL BUTTONS FOR SIGNALS,POINTS & ROUTES

 

RRI LAY OUT WITH ALL BUTTONS FOR SIGNALS,POINTS&ROUTES

SIGNAL BUTTON CIRCUIT
Any button pressed, the concerned signal button relay will pick up providing all other buttons relays are dropped and no button remain pressed.

 

SIGNAL BUTTON CIRCUIT

ROUTE BUTTON CIRCUIT

Required route button is pressed to energize the route button relay

ROUTE BUTTON CIRCUIT

POINT BUTTON CIRCUIT
When the point button WN is pressed concerned WR will pick up proving all other point buttons are normal.

POINT BUTTON CIRCUIT

 

COMMON GROUP BUTTONS CIRCUITS

COMMON GROUP BUTTONS CIRCUITS

NNR CIRCUIT
NNR is a normally energized relay and proves that the signal is at `ON’ and normal.

NNR CIRCUIT

* NRR picks up through conf. NNR’s pick up and GNRR(GNR) & UNR pick up. The button relay contacts are bypassed with its own pick up contact. 

* On the negative side it picks up through EGGNR drop contact bypassed by GNRR drop contact. The sequential route release relay UYR2/UYR3/UYR4 drop is also proved on the negative side.

* NRR drops as soon as train passes the signal and UYRs pick up or when GN & EGGN button are pressed simultaneously to pick up GNRR & EGGNR to cancel the signal .

 

NLR/RLR CIRCUIT

NLR/RLR CIRCUIT

 

NRR CIRCUIT

 

 

NRR CIRCUIT

NLR/RLR CIRCUIT

All this NRR’s of all signals and overlap are used to pick up concerned point NLR/RLR relays for operating of points to the required position as per the signal Route.

Every point will have one NLR and RLR each.

NLR and RLR are numbered with concerned point No. and they pick up WNR or WRR which in turn initiates point control and operates the point to normal or reverse respectively.

 

NLR,RLR CIRCUIT

 

0VNNR

0VNNR

OVNRR

OVNRR

WNR/WRR CIRCUIT

WNR,WRR CIRCUIT

 

 

RRI LAY OUT WITH ALL BUTTONS FOR SIGNALS,POINTS & ROUTES,SIGNAL BUTTON CIRCUIT,ROUTE BUTTON CIRCUIT, POINT BUTTON CIRCUIT,COMMON GROUP BUTTONS CIRCUITS, NNR CIRCUIT, NRR CIRCUIT,NLR/RLR CIRCUIT, NRR CIRCUIT, OVNNR, OVNRR,WNR/WRR CIRCUIT

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