Attached you can find the connection diagram of the big LGB Onboard Decoder. Uncoupler 1 will be connected normally. Uncoupler 2 cut off the plug and connect red to + F2 brown to – F2 black to black of decoupler 1 You have to decide whether you want to dispense with the smoke unit. Programming: CV49=32 CV56=32 CV51= 1-8 (Desired button F1) CV57= 1-8 (Desired button F2) LGB-ZD-3A-komplett.pdf
If you would like to control the Uncoupler with the outputs A5-8 from the XL / LS / XLS, you need a small additional circuit for controlling the Uncoupler. See picture with schematic. The circuit can be easily mounted on a stripboard. P.S.: The L decoder does NOT require this circuit!
On several occasions, we set up a circuit here to digitize the old DUO locomotives with electric decouplers. The circuit was tested by me once on an XL decoder and worked and is in this form only for one drive usable. Nevertheless, I can give no guarantees for replicas, this is at your own risk. The circuit must be doubled for both drives. The function output of the decoder…
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