* This Part 3 shows a Z-Stuff DZ-1012v Infrared Block Signal Detector and Z-Stuff DZ-1008 Relay automatically controlling two 3-rail O-gauge trains on the same track -- using the "release from the rear" method. (Part 1 showed the same DZ-1012v Detector controlling two trains, using the preferred "delay from the front" method.)
* Part 1 (recommended method, "delay from the front") is on Youtube and Vimeo here: youtu.be/LMnjJLROMQc or vimeo.com/300117722 .
* Part 3 ("release from rear", better alternate method, that you are now watching): youtu.be/CiwxULos5IM or vimeo.com/342719732 .
* Part 2 ("release from rear", alternate method using older DZ-1011) is on Youtube and Vimeo here: youtu.be/LMSptSSnkcw or vimeo.com/300124648 .
A. ~~~~~~ CONTENTS: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* NOTE: You should be able to SKIP to ANY SECTION of the video, by clicking the below minute:sec numbers.
- Introduction: 0:18 min
Y Demo 16, Release From Rear Using DZ-1012: 0:41 min
Z1 Demo 17, Release From Rear Using SHORT Train: 2:55
Z2 Demo 18, Increase DZ-1012's Time Delay: 4:20 min
Z3 Drawing: Chg Relay from NC to NO: 6:21 min
Z4 Discuss LOGIC, this Layout: 9:25 min
Z5 Discuss Logic, LARGER Layout: 11:38 min
Z6 LIMITS of Detector Location: 13:28 min
The END: 15:21
B. ~~~~~~ LINKS TO DRAWINGS & OTHER INFO: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* DRAWINGS: autocontrols.wordpress.com/z-stuff-dz-1012v-block-detector-automatically-controls-two-o-gauge-trains .
* The O Ga. RR Forum discussion: ogrforum.ogaugerr.com/topic/video-z-stuff-dz-1012-block-detector-controls-two-o-gauge-trains-on-1-mainline .
* Home page for automatic controls info: AutoControls.org
* Z-Stuff website: z-stuff.net/dz1012.html
* RELATED Video: The earlier Video #667 "Talley Ober's O-Gauge Insulated-Rail Automatic Control of 3-trains, No Relays No Electronics" shows a layout controlling 3 trains using the INSULATED RAIL method: youtu.be/1v_yhwUtwco or vimeo.com/283900932 .
C. ~~~~~~ COMMENTS: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~|
* This PART 3 demonstrates using a Z-Stuff DZ-1012v Infrared Block Signal Detector, positioned UPSTREAM of an isolated "Stop Block".
* The "normally-open" contacts of the relay are connected to the "Stop Block".
* HOW IT WORKS: The "front" train gets "trapped" in the "dead" Stop Block, and has to wait until a train following from the rear activates the Detector and closes the relay, and changes the block to "powered".
* In some cases, this "Release From The Rear" method as demonstrated in Parts 2 & 3 may work BETTER than Part 1 -- for example:
(a) if the track loop is really LONG (and the DZ-1012's maximum adjustable time delay of 60 seconds is not enough to keep the two trains separated) or
(b) you want the stopped train to remain stationary until the moving train completes MOST of the loop.
* DISADVANTAGES: (1) To run just 1 train, you have to "jumper" across the stop block. (2) The detector light's colors are "counter-intuitive"; "red" means "block powered", "green" means "block dead".
This iMovie10 video was uploaded by JamesIngram.net . (Description updated 6/22/19.)