MalcT
On my layout ( OO gauge / DCC - NCE Powercab - electrofrog points ) I have several crossovers and want to add 'isolated' tracks just before the point 'heel' to avoid derailments and shorts.
Looking at the DCC Concepts advice sheet, DCC Advice #11 - "Wiring Point-work and special track conditions," page 5 has a good diagram for doing this which is easy to understand see: https://www.dccconcepts.com/manual/dcc-advice-11-wiring-pointwork-and-special-track-conditions-for-dc-or-dcc/ -
However I also have one set of points where both tracks to the point heel could have locos travelling in the same direction. How would I add the isolating wires for the second track?

As nearly all my track has droppers attached I'm assuming that the wires to the S2L (or S2R) and S2C would be instead of to the bus-wire.

I also would like to add a warning LED to my mimic panel, how does one do this?
MalcT
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AHJAY
Look at the newsletter that is about to pop up on the forum (AM Monday November 4 / today)

Use a sensor on each approach track, with the sensors attached to the Cobalt iP Digital - or to the accessory decoder switching terminals. Then, the point will automatically be changed as the train approaches.

To have it also activate LEDS, then either the LEDS will need to be attached to one of the switches on a Cobalt motor OR you will need to use a digital approach.

To do this you would need an Alpha AEU unit. with the Sensor triggering the AEU inputs, it will then send out a digital signal that can be used to trigger an Alpha Mimic control board that will change the LEDs. (and it will also of course, change the point with a digital command at the same time)

All of this is covered in the newsletter.

regards, Ahjay
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MalcT
Thanks Ahjay.  Have looked at the newsletter and think that the Sensors will be the ideal solution.

Regards,
MalcT
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MalcT
Hi,

Revisiting this topic again as I have another issue/ query. I've added an accessory bus to my layout, I'm using Cobalt IP Digital point motors therefore the SPDT switching on the point motor is used for the frog polarity. So reading the newsletter about the sensors this shows the safety interlocking wiring requiring the same SPDT switch. How do I overcome this problem?

Thanks
Malc
MalcT
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AHJAY
Hello Malc

There are two switches on Cobalt iP Digital. One is linked to the two DCC inputs for the frog, the other is totally independent and can be used for interlocking.

If your application needs this second switch for something else post a simple track diagram and we can look at other options for you

regards. Ahjay
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