Running more points

[Goosey 64]

Hi all, has anybody been able to or know if you can run more than one point motor off each terminal on the R8247 dcc decoder. I understand that if its possible both that are connected to each terminal will activate together. But is it possible to achive? And all 4 terminals? 

[Chrissaf]

Just for the sake of clarity. I assume that by terminal, you mean port and the question is in two parts.

.

Part one: Is it possible to operate two solenoid point motors wired in parallel from the same R8247 port?

.

Answer is Yes

.

Part two: Is it possible to do the above on ALL four ports of the R8247?

.

Answer is Yes in theory. The main potential issue is that when two motors are wired in parallel, the capacitors in the R8247 will be more fully drained than when just operating a single point motor. Thus it would be prudent to allow longer capacitor re-charge times before sequentially operating ports on the same R8247.

.

[Goosey 64]

Thanks chrissaf. Maybe i wasnt clear but your answer was just what i was looking for and i thank you. How would you go about connecting two point motors to achive this? 

[Chrissaf]

How would you go about connecting two point motors to achive this?

.

As I wrote in my reply......"wired in parallel"

.

Assuming Hornby point motors using standard Hornby colours (not PECO colours), then as per the top drawing. If one of the points throws in the opposite direction, then just reverse the 'Red' and 'Green' wires of the point motor that throws the wrong way. The lower drawing is an example of this, where Point Motor 2 throws the wrong way, and the Point Motor 2 wiring has been reversed to correct this.

.

/media/tinymce_upload/7b1d5f201fb1931614eb37d257f02cf4.jpg

.

[Fishmanoz]

And to further clarify, you can do the actual wiring by putting both red wires into the same + port connection, both green into the - and both black into the C.  Then if one is throwing incorrectly swap its red and green between + and -.