How to wire Azatrax model train detectors as inputs to a Digitrax™ SE8C signal decoder.

Azatrax infrared train detectors can easily be wired as inputs to a Digitrax™ SE8C Signal Decoder. This allows the SE8C to respond when a train arrives at a particular location on the layout.   MRD1 and MRD2 train detectors are wired to the SE8C decoder in the same way as momentary push button switches or as track block detectors. See the pin-out diagram for the SE8C edge connector in the Digitrax™ instruction manual.   The schematic diagram on this page shows three Azatax MRD1 infrared train detectors connected to inputs SW01, DS02 and DS03 on a Digitrax™ SE8C. The SE8C has eight input connections for switch contacts, SW01 - SW08, and eight connections for track block detectors, DS01 - DS08. Connect SE8C pin 2 (+VE sensor common) to the QC terminal of each MRD1 detector. Connect the Q1 terminal of the first MRD1 to a DS or SW input on the SE8C. In this example the first MRD1 detector is connected to pin 4 (SW01). Connect the Q1 terminal of the each remaining MRD1 to other DS or SW inputs on the SE8C. If you want multiple MRD1's to trigger the same response from the SE8C, then connect a single DS or SW input to the Q1 terminals of all those MRD1 detectors. Connect an accessory power supply to all MRD1 detectors, terminals P1 and P2. The power supply should be 8 to 14 volts AC or DC. Choice of software to control the SE8C signal decoder is up to the user. Azatrax does not provide software.   For instructions how to wire Azatrax infrared train detectors to Viessmann or Märklin s88 feedback decoders click here.   To see all Azatrax infrared train detectors click here.   To learn about Azatrax infrared train detectors that connect directly to USB click here.

SE8C detector input wiring

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