Atlas Uncoupler not seeming to function properly:

Are you using common ground?

@Überstationmeister posted:

As indicated above and in the other thread, you need a common ground for the uncoupler. If you are using two transformers, you need to tie the "ground" connections together (and ensure the transformers are in phase). Your above description does not indicate a wire from the accessory transformer "ground" to the track or to the track transformer "ground" directly. Beyond this, it is prudent to use the outer rail opposite the screw terminal for the connection since this rail is directly wired to the magnet.
If you wish to test the magnet itself, wire the magnet track directly to the transformer and apply 12V-14V.

I am using common ground.
All transformers, including A, B, C, D, of my ZW are wired together and are in phase.
Track transformer has ground to track, and is in phase with accessory transformer.

I also did try connecting directly to the transformer, and did use the wired outer rail on the uncoupler track.

RWL, since you are using common ground then the uncoupler must be defective. There’s not much to them as far as complexity. Hook the wiring up to a 12 or 18 volt bulb and push the button. If it lights then surely the uncoupler is defective. Keep us posted. Good luck.

Thanks.
I have two of these uncouplers.
I will open the second one ant give it a try as well.

These are brand new just out of the packaging.

@romiller49 posted:

RWL, since you are using common ground then the uncoupler must be defective. There’s not much to them as far as complexity. Hook the wiring up to a 12 or 18 volt bulb and push the button. If it lights then surely the uncoupler is defective. Keep us posted. Good luck.

I opened up the second uncoupler, and it seems to work properly.
Makes a light buzz when depressing the button, but chatters like antilock brakes when the coupler actuator goes over it, and gets activated.
The other one must be bad.

Don’t hold the button down any longer than needed. One second should be fine.