Can You Help with Insolated/Isolated Rail and MTH Crossing Gates?

[garyseven]

A Quick Question:

What is the wiring configuration using insulated 40-1029 Realtrax sections, and 30-11012 MTH crossing gates with track power? I cannot find my instructions anywhere.

Here are the rails:
* Outside rail gets negative power
* Center rail is positive power
* Inside rail is insulated/isolated

Here's where I am guessing two wires from the gates go:
* Black wire to outside rail
* Red wire to center rail
Where do the white, yellow and blue wires go?

[spankybird]

Hi Scott,

I have this gate, but could not find my paper work on it, so from memory of 5 years ago,

I belive the black and red wire is for power, the other three are to turn it on and off. One of the three is common, one is to lower the gate and the last is to raise the gate.

tom

[willpick]

Gary, the 30-11012 gates are usually operated by an ITAD-- The instructions do say an isolated block can be used, but no wiring diagram is given. The black wire goes to the outside rail, red wire to center rail. the white wire goes to the Normally Closed (NC) terminal of the ITAD, the yellow to the Normally Open (NC) terminal. So if you connect the yellow wire to your isolated rail, the gate will go down. How you get the gates back up I don't know[?].
I connected mine to an ITAD, but you could use a 12VDC relay triggered by the insulated rail. (that's all that's in an ITAD anyway- it's just triggered by light instead of a rail). To power the relay, you can use the track power--- a bridge rectifier will give enough DC to turn the relay on. The way to connect the rectifier is this:
wire from insulated rail to one AC terminal; wire from other AC term. to center rail. DC+ term. goes to +DC on relay; DC- goes to -DC on relay.
Wires from gates: White to NC term. on relay; yellow to NO term.on relay; blue to Common term on relay.

Hope i've explained well enough-- I can send you a drawing of the wiring if you'ld want one--

[garyseven]

Thanks guys. I have a bridge rectifier, relay and track diagram around here somewhere with my instructions. Somewhere...

I was hoping I could just use an insulated section of track and forget finding the other stuff.

Thanks anyway!