Controlling DZ-2500C switch machines at a panel with a momentary push button and a red and green LED

AlanRailOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

This is the schematic from a 2016 post that it says came from Dennis Zander. So it must be legit.

However when I hook this up using a red and green 3mm LED (with a resistor) on pressing the Momentary PB the DZ-2500 does flip between the two turnout positions (nice) but the 3mm LEDs are both lit although one is stronger.

What am I doing wrong should not in either position the opposite LED be off not on???

Note that the white wire shown in the diagram coming from the DZ-2500C IS connected to one side of the PB even though it doesn't sort of show that. And the DZ-2500C's green and yellow wires are connected to one of the red(+) sides of one LEDs; the black(-) LED wire is connected to COM.

7/30/198:25 PM

Original Post

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