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Author Topic: Kato Point Issue....  (Read 206 times)

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Offline Only Me

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Kato Point Issue....
« on: October 27, 2017, 10:36:40 am »
Hi All,  On our Club layout horseley fields the Tram way has been built with KAto points, these use reversed polarity to change them, on two wires... Is there a circuit anyones got or has used to work these type of points through an output meant for Solenoid type motors, ie using diodes etc, scratching my head here as the point controller has a common Positive and the usual solenoid negative outputs which would usually throw the point.   I guess I coult put relays in front somewhere if need be

I cant change the controller before anyone asks!.. and its automated so cant just use a switch as I'd like to!...

Cheers Paul.
« Last Edit: October 27, 2017, 10:37:52 am by Only Me »



Offline Only Me

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Re: Kato Point Issue....
« Reply #1 on: October 27, 2017, 11:35:21 am »
Came up with this now :-





...Unless of course anyone has an easier way! :D



Online ntpntpntp

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Re: Kato Point Issue....
« Reply #2 on: October 27, 2017, 11:51:00 am »
DCC Concepts do a handy little adapter which converts accessory decoder outputs designed for 3 wires solenoid to 2-wire reversible DC.

https://www.dccconcepts.com/product/dcc-decoder-converter-3-wire-to-2-wire-6-pack/

I've used individual CDUs (of my own design) for the last 20 years or so for my Peco solenoids.  I found that with a very minor redesign of the physical order of the output terminals and a change to common positive instead of common negative 3-wire design, I can now connect via one of the little adapters and drive eg. a Kato, Conrad or LGB point motor quite happily, should I need to.
« Last Edit: October 27, 2017, 01:26:56 pm by ntpntpntp »
Nick.   2016 celebrating the 20th anniversary of "Königshafen" exhibition layout!

Offline Only Me

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Re: Kato Point Issue....
« Reply #3 on: October 27, 2017, 11:57:29 am »
Ive gone the ebay £6 option above but thanks for reply
« Last Edit: October 27, 2017, 12:53:24 pm by Only Me »



Offline Malc

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Re: Kato Point Issue....
« Reply #4 on: October 28, 2017, 06:34:20 pm »
Don’t use a CDU for Kato points. The coils are very sensitive and a transitory switch of +-12v is all they need, which may be why you are using the CDU.
« Last Edit: October 28, 2017, 06:35:53 pm by Malc »
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