Feedback modules are essential if the model railway is to be automated or controlled with a computer program. The automatic or the program needs the information from feedback modules to decide whether a train is permitted to enter a certain track or which route is to be activated.
All functions in one module!
The feedback module 63320 for 2-rail track provides all functions for digital feedback in a single module: track occupation detection (for 8 track sections), feedback to the center and power monitoring.
The track occupation detector checks whether there is a power load in its track section. That can be a locomotive, a lit wagon or a wagon whose axle was bridged with resistance lacquer (Part No. 40410). If a current of at least 1mA flows in the monitored track section, the section is reported as “occupied”; if no current flows then the section is “vacant”.
As an additional feature, each of the 8 feedback inputs may be programmed to trigger two solenoid addresses when the 'occupied' signal is sent and another two solenoid addresses when the feedback returns to 'vacant'. This reaaly helps when organising a marshalling yard or busy station.