Infrared Train Detector with Timer Manual
Contents
1. DC power supply capable of supplying a maximum of 50mA for each ITD TR unit you have connected to it Ensure that you connect the 9V positive wire from your power supply to the 9V terminal on your ITD TR and the ground negative wire from your power supply to the GND terminal 3 Wiring an Indicator LED LEDs have to be connected in a certain way in order for them to work They are polarised meaning they have a positive anode and a negative cathode pin The cathode pin is easily identified as it is either the shorter of the two Cathode leads and or its marked by a flat spot on the body of the LED A LED can be mounted remotely and then wired to the ITD TR to Anode indicate when the relay is active To connect an indicator LED wire the cathode of the LED to the OP2 LD terminal and the anode to the LD terminal No resistor is required Whenever the relay on the ITD TR is activated the LED will illuminate as well A 3mm red LED is provided LED Interfacing the ITD TR to other Equipment You can interface the ITD TR to other equipment either via the relay or output terminals OP1 and OP2 LD The relay has three terminals Common C Normally Open NO and Normally Closed NC When the timer is off then the Common C is connected to the Normally Closed NC terminal When the timer is active the Common C is connected to the Normally Open NO terminal Output terminals OP and OP2 LD are open collector outputs B2. INFRARED TRAIN DETECTOR WITH TIMER ITD TR ee The Infrared Train Detector with Timer ITD TR uses an Infrared IR sensor to detect a train and then turn on a relay for an adjustable period of time By connecting track power through the relay on the ITD TR you can stop a train for an adjustable period of time once it has been detected Some applications could be to automatically stop a train at a station for a set period of time or to extend the time a train spends hidden in a tunnel to give the impression of distance Applications do not have to be limited to just controlling trains The ITD TR could be used to activate a sound module or some lights embedded in the scenery as a train passes by The ITD TR is not designed to stop trains operated by DCC What you should have 1 x Sidetracked Electronics Infrared Train Detector with Timer ITD TR 1 x 3mm red LED 1 x User manual About this manual Text written in TALICS in this manual represents text as it is written on the ITD TR Operation The operation of the ITD TR is very simple When a train is detected the relay on the ITD TR is activated for a period of time determined by the timer control If an indicator LED is connected then it will be illuminated while the relay is active Once the timer has elapsed the relay and LED will be turned off and cannot be reactivated until the IR sensor has been clear for two seconds If you need to turn the relay off before the timer has ela
3. Sy W VT XI 7 AW ITD TR ITD TR ITD TR CORRECT i CORRECT i INCORRECT H It is recommended that the ITD TR is mounted under your layout and the IR sensor pushed up between the sleepers in the centre of your track Drill two 4 0mm 5 32 inch holes with 5mm between their centres or make a 4 0mm x 9 0mm slot being careful not to damage the track Screw the IR sensor in place adding a spacer if necessary so that the top of the IR sensor sits level with the top of your ballast or sleepers IMPORTANT Make sure nothing covers the top of the IR sensor and that the rubber tubing that surrounds one of the sensors stays intact once the ITD TR has been installed Do not apply any heat to the rubber tubing as it my distort and affect the operation of the sensor WWOS WWWQG gt Spacer Isolating Tracks In order for the ITD TR to stop a train without disrupting train operation on other parts of your layout you will have to isolate a section of track for the train to stop in Once you have determined the location of the ITD TR you will have to cut one rail of the track in two locations The first cut goes in the rail approaching the ITD TR and must be in a position that allows sufficient room between the cut and the IR sensor to fit your longest train This ensur
4. es that trains will always stop regardless of whether the locomotive is pulling or pushing the train Before making the second cut it is important to note that a train may not stop immediately the IR sensor detects it Depending on the speed that the train is travelling when power is cut from the track determines how far the front of the train will run past the IR sensor With this in mind make the second cut just past the IR sensor allowing enough room for the train to stop Allow enough room for your longest train between isolation cut and the IR sensor Allow enough room for train to stop Train Direction Isolation cut To 9V lt power supply J 2 To train a controller Momentary on push button switch Timer control Isolation cut lt Y ax Wiring Track Power From your train controller wire from one terminal directly to the rail which has not been cut The second terminal on the controller goes to two places The first wire goes directly to the cut rail outside the isolated section of track The second wire goes to the isolated section of track via the NC normally closed and C common terminals on the ITD TR Wiring a Switch Wiring in a momentary on push button switch allows you to turn the relay off before the timer has elapsed The two pins on the switch need to wired to the GND and P terminals on the ITD TR Wiring Power to the ITD TR You require a 9V
5. oth outputs will be active pulled low while the timer is active Adjusting Timer Delay The ITD TR has a timer which controls the length of time the relay is activated for once a train has been detected The timer can be adjusted for a delay from 1 second to just over 5 minutes By winding the timer control in a clockwise direction you increase the time delay and by winding it in an anti clockwise direction you decrease it Controlling Train Speed The ITD TR does not control the speed of the train this is done by an external DC train speed controller connected to the relay contacts on the ITR TR The ITD TR simply turns the power to the track on and off The ITD TR is not designed to stop trains operated by DCC Specifications Dimensions 65mm width x 32mm depth x 50mm height Supply Voltage 9V DC Supply Current 50mA Maximum Relay Track Voltage 30V Maximum Relay Track Current 2A Sidetracked Electronics PO Box 7085 Safety Bay Western Australia 6169 Phone 61 8 9528 5344 Email enquiries sidetracked e com Website www sidetracked e com Copyright VOROO 4
6. psed you can connect a push button switch to the ITD TR Whenever the button is pushed while the timer is active the timer will be reset and the relay and LED will be switched off The timer cannot be reactivated until the button has been released and the IR sensor has been clear for two seconds If the push button is pressed when a train is first detected then the timer will not be activated at all The timer can only be reactivated once the button has been released and the IR sensor has been clear for two seconds The reason for the two second delay is that as a train passes over the IR sensor it is possible for the ITD TR to momentarily stop detecting the train This could be because of an irregular surface under the train causing the IR beam not to reflect properly or the gaps between the carriages where there maybe no reflective surface at all By having the delay it compensates for the time the train may go undetected an ensures that the ITD TR functions correctly Installing the ITD TR There is two parts to each infrared IR sensor on the ITD TR a transmitter and a receiver When mounting the ITD TR make sure the two components of the IR sensor are pointing directly up or slightly bent in towards each other The train acts like a reflector when it passes over the IR sensor so if they are pointing away from each other the train may go undetected Underside of train Underside of train Underside of train TALS M A V
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