spikey Posted April 2, 2017 Share Posted April 2, 2017 Is it possible to control a 3-way point via a 2-pole rotary switch? This would be with SEEP point motors (with latching relays for frog switching) fed off a CDU, and the objective would be that the switch position mimics the road through the point. Link to comment Share on other sites More sharing options...
RMweb Gold Dagworth Posted April 2, 2017 RMweb Gold Share Posted April 2, 2017 Is it possible to control a 3-way point via a 2-pole rotary switch? This would be with SEEP point motors (with latching relays for frog switching) fed off a CDU, and the objective would be that the switch position mimics the road through the point. You would not be able to control the SEEP motors directly from such a switch. If you used that switch to fire a pair of ordinary non-latching two pole changeover relays you could use this circuit to control the motors AND the frog switching though. You would need the circuit twice, one for each motor. Andi Link to comment Share on other sites More sharing options...
spikey Posted April 2, 2017 Author Share Posted April 2, 2017 Thank you very much Andi. Hmmm. Now to work out if the space-saving is worth the expense and the compllciation ... Link to comment Share on other sites More sharing options...
71000 Posted April 3, 2017 Share Posted April 3, 2017 Is it possible to control a 3-way point via a 2-pole rotary switch? This would be with SEEP point motors (with latching relays for frog switching) fed off a CDU, and the objective would be that the switch position mimics the road through the point. Y Link to comment Share on other sites More sharing options...
DCB Posted April 5, 2017 Share Posted April 5, 2017 Er you can operate a 3 way point from a rotary switch. I use one pole of a 6 way 2 pole, a press to energise switch and a diode matrix for 6 hidden sidings including a 3 way point. However it does not work that well as the 3 way really needs one set of blades to throw before the other rather than simultaneously. All the other points work fine off the matrix but usually it needs 2 tries to get the 3 way to change because it binds up when both blades try to move together. Link to comment Share on other sites More sharing options...
RMweb Premium melmerby Posted April 5, 2017 RMweb Premium Share Posted April 5, 2017 Er you can operate a 3 way point from a rotary switch. I use one pole of a 6 way 2 pole, a press to energise switch and a diode matrix for 6 hidden sidings including a 3 way point. However it does not work that well as the 3 way really needs one set of blades to throw before the other rather than simultaneously. All the other points work fine off the matrix but usually it needs 2 tries to get the 3 way to change because it binds up when both blades try to move together. The Code 75 Electrofrog point is assymetrical, the 2 points can be controlled independently. The OP didn't say which sort. Keith Link to comment Share on other sites More sharing options...
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