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Reply to "Relays for Track Power using AIU"

George Mason posted:
 
I guessed that I had to have one per siding, so I ordered these....

I am hoping that this is what I need. I was also hoping that there is a function in the FRM01 that would turn off the FRM01 once the program finished running. In other words, I hoped that one FRM01 could service multiple sidings.

No stash of capacitors, but I can always get some.

But aren't those the same relays as you proposed in this earlier post?

https://ogrforum.ogaugerr.com/...66#79142442769473066

In my response to that post I warn that they are NOT "Delay OFF" modules despite whatever the item description says.  They are "Delay ON" modules which is not what you want.    Again you want a Delay OFF module which works as follows.  1) You apply 12V power to the module, 2) Relay immediately turns on, 3) after some settable delay such as 5 seconds, the relay turns off and stays off even though 12V power is still applied.  To trigger the relay again, remove 12V power and go to step 1).   The FRM01 programmed to Function 02 is behaving as a Delay OFF module.  As you confirmed, after it performs its delay-OFF once, you cannot re-trigger it unless you remove 12V power and start again.

I show an example of a true Delay-OFF module in my recent posts.  They are less than $2 on eBay (free shipping from Asia).  I'm sure they are also on Amazon too with a suitable markup if being shipped from within US.   Or, you can use 1 FRM01 per siding.

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One might argue that 10 x $2 = $20 for a pile of Delay-OFF modules would let you be done with it and move on, albeit with some assembly/wiring handiwork.  I asked about capacitors because the FRM01 Function 02 has an interesting feature which allows you to re-trigger the delay on that 3rd "unused" screw-terminal input.  I'd have to mess with it, but there may be a way to use 1 capacitor per siding to re-trigger the FRM01 Function 02 whenever a new siding is turned on even if one or more sidings have already been turned on.  

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