PSX1-AC

@gunrunnerjohn posted:

My plan on my new layout here is to run with the PH180 transformers feeding the MTH TIU and on to the track.  So far, that's worked fine.

I do that as well. Just added TVS diodes on the input side of the TIU. 0 issues with the occasional derailment and the PH180 breakers are more than fast enough.

I have been using two ZW-L's to operate my layout for three years. Despite my best efforts I manage to activate their circuit protection at least once every time I use the layout by running an engine into an open turnout (two rail layout.) The output protection of a ZW-L is equivalent to the PSX1-AC. The only reason to include them with a ZW-L would be to set the protection level at less than 10A. I have a number of the PSX boards on my layout, mostly the auto reverser boards, they are all excellent products.

To all,

I'd like to order some chokes just in case I need them.  Does someone have a part # that might be good for this application?

Don

Any from This List on Digikey would be suitable.

@Windy City posted:

CAPPilot,

I noted the capacitor in the above drawing.  I thought the capacitor was to bridge any insulated rail joints to preserve the TMCC signal.  Why is it needed for accessories?

Mainly because I worded it wrong  Yes, if you use an isolated rail to energize accessories and you are having TMCC issues, adding the capacitor may help.

@Trestleman1 posted:

To all,

I'd like to order some chokes just in case I need them.  Does someone have a part # that might be good for this application?

Don

This is the one I used

https://www.digikey.com/produc...4BHA-220K-ND/7695908

If you need one I’ve been putting them on a PCB with a TVS making it a little cleaner. I still have some left if you want send me a email.

@zhubl posted:

This is the one I used

https://www.digikey.com/produc...4BHA-220K-ND/7695908

If you need one I’ve been putting them on a PCB with a TVS making it a little cleaner. I still have some left if you want send me a email.

Hi Zachariah, I wrote you last night about buying some from you. Sent it to your profile email, might have gotten into your spam folder. Thanks, Keith

https://ogrforum.ogaugerr.com/...0#154026431054576230

I stand corrected - a closer look at my wiring configuration revealed that the PSX units were placed between the transformer throttles and the TIU channels. This was done to avoid the DCS signal degradation (which matches experience).

The trip point is set for 8 amps, so everything is perhaps on the more sensitive side.

Given this discussion, is a tvs recommended between the track and TIU to further safeguard the TIU?

BTW; The video posted earlier by Superwarp1 provides an excellent demonstration of the PSX capabilities.

Everyone, Thanks for the information, Don

@Keith Crook 020419 posted:

Hi Zachariah, I wrote you last night about buying some from you. Sent it to your profile email, might have gotten into your spam folder. Thanks, Keith

You should have a response now

@ScottM posted:

Given this discussion, is a tvs recommended between the track and TIU to further safeguard the TIU?

The TIU includes a TVS on the output of each channel.

Was there ever a definite confirmation to not use these running a conventional variable voltage loop?

The PSC1-AC is not a good choice for a conventional environment.

@gunrunnerjohn posted:

The PSX1-AC is also really only for command use, it won't pass low voltages.  From the TIPS section of their site.

The onboard processors derive their power from the input power to the PSX units. To prevent any unpredictable
operation the input voltage should be kept above 10 volts.

A good alternative for any conventional or command environment are the AirPax Instant Breakers.

Thanks, I'll add two PSX for my primary DCS tracks and two Airpax for my conventional loop and my standard gauge loop that has a mix.