Auto reverse module

[Db23chat]

Hi, Does anyone know of an auto reverse module which will work with the Hornby Select controller?

[96RAF]

Any DCC RLM will work with the Select as well as any other NMRA compatible controller.

See the sticky post in this section titled Reverse Loop Modules for alternatives to the obsolete Hornby RLM.

[Fishmanoz]

But do make sure you set your reversing current correctly if you are using the 1 Amp supply with your Select.

[Brew Man]

The last time I looked Gaugemaster say that theirs will not work with Hornby controllers. They don't say why. I have the Block Signalling offering which works flawlessly and is under £30.

[96RAF]

I have asked GM why that is BM and will report back their answer, but if you read Chris’ RLM guide it essentially tells you why - the 1-amp power supply. Swap to a 4-amp supply and likely all will be well.

[Brew Man]

Thanks, Rob, it will be good to get GM's take on it.

[Flashbang]

The Gaugemaster Reverse Loop module is relay operated and designed to work with their higher current powered DCC systems. Both their PA2 and smaller Express systems. The Hornby Select, as sold only has 1.0 Amp power supply and the GM RLM won't trip and reverse power with such a low power DCC supply.

To note: a RLM that is relay based is very slow in flipping over the reverse loops rail power and may cause the DCC system to "See" the short circuit and trip out before the RLM has had time to flip over the rail power and remove the short circuit. An all electronic RLM will be able to do this far quicker than any relay based RLM!

IMO the PSX-AR is probably the best Reverse Loop Module with a very close second comes the Dual Frog Juicer.

[Brew Man]

@Flashbang

That makes a lot of sense. surprising if they sell many of those.

Have you tried the Block Signalling RLM? I find it excellent and is about half the price of the PSX-AR.