Signalling

RRI Circuits

Part 1 - Getting Started with Route Relay Interlocking
Part 2 - Getting Started with Route Relay Interlocking
Part 3 - SMCR/SMR CIRCUIT
Part 4 - Button GNC AND GNCR CIRCUIT
Part 5 - Button UNC AND UNCR CIRCUIT
Part 6 - Button WNR AND WNCR CIRCUIT
Part 7 - Button SIGNAL FAIL ALARM CIRCUIT
Part 8 - POINT FAIL ALARM CIRCUIT (WXACKNR)
Part 9 - GROUP BUTTON RELAY CIRCUIT
Part 10 - SIGNAL CLEARANCE SEQUENCE OF OPERATIONS
Part 11 - LR CIRCUIT : Route Selection/ Initiation Relay(Important)
Part 12 - TSR CIRCUIT Or One Signal One Train
Part 13 - POINT CONTROL CIRCUIT: (Combined WLR/WNR/WRR)
Part 14 - ROUTE CHECKING CIRCUITS (UCR) )
Part 15 - Approach (Lock) Stick Relay Circuits (ASR/ALSR) - Part 1
Part 16 - Different way to energies ALSR- Part 2
Part 17 - ROUTE LOCKING CIRCUITS - Part 3
Part 19 - RRBUN CANCELLATION AND CALLING ON CANCELLATION
Part 20 - Overlap Stick Relay Circuits - OVSR
Part 21 - Sectional Route Release Circuits (TLSR/TRSR)
Part 22 - PROVING OF THE ASPECT OF SIGNAL AHEAD (GECR)