a signal must be received from the field element that it has actually moved into the position requested. The locking bed shown is for a GRS power interlocking machine.

Relay interlocking

Interlockings effected purely electrically (sometimes referred to as all-electric) consist of complex circuitry made up of relays in an arrangement of relay logic that ascertain the state or position of each signal appliance. As appliances are operated, their change of position

1.Previous
3.Next