Wiring up LGB EPL point motors

Found this on another thread

89205_d4553397272c4bda51139b67124bbfc9 _1_.jpg
 
JimmyB said:
Jon, don't understand, how would it provide an indication, they are diodes not LEDs, also where would i put a push button switch?
Click to expand...
If the Switch were a normal Change Over one that could indicate which way the Switch were facing when Set, the Push Button could be either before or after the Switch to make the Circuit live. At all other times it would be dead beyond the Push Button. One would mount the switches on a Panel that either had a track diagram with the switches mounted so that the direction is obvious or like a Signal Box where the Main is always ‘Normal’ and if you Pull the Switch the other way the route is ‘Reversed’ I.E to the secondary direction. So for instance on your line where if I remember correctly part of the setup the following would be like a Signal Box.

11B149BE-A08A-45B8-8AC5-78589841F609.jpeg
 
Correct Jimmy..

Jon is suggesting you use a latching (two-position) switch to 'set' the route, then the (in series) push-button to 'fire' the point..
You then have an indication of the route from the position of the switch toggle. - As long as you always 'set and fire'.

Does that help?

PhilP.
 
JimmyB said:
Phil (and Jon) I now understand, however to my simple mind this overly complicates things, and I don't do complicated electrics.
Click to expand...
Thanks Phil, not overly complex at all but the help that can be given from having a visible view of what Points and Signals are doing is a great help. The logic of it all is inescapable and for a little additional wiring certainly worthwhile, in fact if you are going to use Electric Motors the greatest part of the Wiring will be necessary anyway.
 
Last edited:
korm kormsen said:
then you could do this.

http://kormsen.info/steering/bilder/epl-schaltung.JPG (forum still does not accept pics from my website. only those uploaded to the forum)

View attachment 258157View attachment 258157

as simple as they come.
Click to expand...
Yes this is a way to give a simple solution to changing points. But it does not give an indication without looking at the point which was my reason for the Change Over Switch and a Push Button. I have used a similar system to that shown above in smaller scales on Exhibition Layouts and find that Operators tend to overuse the Push Buttons to be sure that the route is set when there is no indicating Switch. Result - shorter life of Point Motors and Push Buttons.
 
I have experimented with DPDT centre off non locking switches, one side switches the points through diodes, as explained above, the other side switches 'flip-flop' circuits to light LED's. Both circuits work independently ( without power to the other circuit) but when used with 9 Volts on the LEd circuit and 14v ac on the motor circuit, when switching points, occasionally, the LED's. 'Jump about' . I am guessing there is interference on the dc circuit from the ac as the wiring runs in a loom, by necessity.
Unfortunately, I have reached the end of my electronics knowledge to fix the problem and am hoping, one day to meet an 'expert' who will just say " you need to.................." to fix it !
If I can get it working correctly, I have used red and green bright 5mm LED' , which show up well in bright sunlight, the result is that it is easy to set a route and have a visual indication , of that route.
Dave
 
Jon's idea, with the "normal" spdt switch could be combined with a second circuit (like a 5v supply) that was isolated from the AC supply, and I believe you could drive LEDs from the position of the SPDT switch, giving turnout position BOTH from the toggle switch lever position and the LEDs. Maybe even something simpler with a bipolar led.

Greg
 
You must log in or register to reply here.
Back
Top Bottom