Skip to main content

I would like to set up a signal light over a 3 track staging yard.  I would like the signal to be red when track power is off, green when each individual siding is live, so 3 relays or 3 channels.  Track power would be 18 v ac.  What relay(s) would those in the know recommend for this function? 

Original Post

Replies sorted oldest to newest

Three double pole double throw relays.  Wire the red to the NC, normally closed terminals, and green to the NO, normally open, terminals.

Earl,

To what do we wire the coils for these three relays?  I'm thinking one wire from each to each of the center rails of the sidings and the other wire from each all tied together on the common (outside rail that goes to the transformer).

Also, thinking about whether these tracks carry conventionally-controlled or command-controlled trains.  With this scenario the relays will not always be fed with enough voltage to operate correctly if conventionally-controlled (depending on the position of the throttle). 

Mike

For clarity, the three individual tracks are part of a loop, all through tracks that merge onto a single track that passes through a wall.  That single track already has a signal that displays red so i don't send something down that line if the track is occupied.   I would like to have the signal head be green when the track is powered, red when it is not.  I know how to set this up and have the necessary lights to make this work.  I run tmcc so all command control.  My confusion in selecting a relay is what to purchase meaning what is out there where the coils can be powered by 18v ac?  Or do i find something where the coils are dc powered and just place a bridge rectifier in the mix.  I know those who live in the world of electrons might find my question kindergarten like but this is not my world.  Just would like a recommendation before i buy something that doesn't work the way i would like. 

Add Reply

Post

OGR Publishing, Inc., 1310 Eastside Centre Ct, Ste 6, Mountain Home, AR 72653
800-980-OGRR (6477)
www.ogaugerr.com

×
×
×
×
Link copied to your clipboard.
×
×