Manual WD-34 Item no.
English WD-34 Table of Contents 1. Getting started ...........................................................................3 2. Safety instructions.......................................................................5 3. Safe and correct soldering...........................................................7 4. Operation overview.....................................................................9 5. Technical specifications..............................................................11 6.
WD-34 English 1. Getting started How to use this manual This manual gives step-by-step instructions for safe and correct assembly of the kit and fitting and connecting of the ready-built module, and operation. Before you start, we advise you to read the whole manual, particularly the chapter on safety instructions and the checklist for trouble shooting. You will then know where to take care and how to prevent mistakes which take a lot of effort to correct.
English WD-34 Checking the package contents Please make sure that your package contains: one kit, containing the components listed in the parts list and one PCB or one ready-built module or one ready-built module in a housing (complete unit), one jumper for programming the address, a CD (containing the manual and further information). Required materials For assembling the kit you need: an electronic soldering iron (max.
WD-34 English 2. Safety instructions Mechanical hazards Cut wires can have sharp ends and can cause serious injuries. Watch out for sharp edges when you pick up the PCB. Visibly damaged parts can cause unpredictable danger. Do not use damaged parts: recycle and replace them with new ones.
English WD-34 Fire risk Touching flammable material with a hot soldering iron can cause fire, which can result in injury or death through burns or suffocation. Connect your soldering iron or soldering station only when actually needed. Always keep the soldering iron away from inflammable materials. Use a suitable soldering iron stand. Never leave a hot soldering iron or station unattended. Thermal danger A hot soldering iron or liquid solder accidentally touching your skin can cause skin burns.
WD-34 English In schools, training centres, clubs and workshops, assembly must be supervised by qualified personnel. In industrial institutions, health and safety regulations applying to electronic work must be adhered to. 3. Safe and correct soldering ! Caution: Incorrect soldering can cause dangers through fires and heat. Avoid these dangers by reading and following the directions given in the chapter Safety instructions. Use a small soldering iron with max.
English WD-34 To make a good soldering joint you must use a clean and unoxidised soldering tip. Clean the soldering tip with a damp piece of cloth, a damp sponge or a piece of silicon cloth. Cut the wires after soldering directly above the soldering joint with a side cutter. After placing the parts, please double check for correct polarity. Check the PCB tracks for solder bridges and short circuits created by accident. This would cause faulty operation or, in the worst case, damage.
WD-34 English 4. Operation overview The points decoder WD-34 is designed to control solenoid articles, activated by a short switching impulse, e.g. coil driven points, semaphore signals with twin coil drive, decouplers. With one WD-34 you can control a maximum of: four points or semaphores with twin coil drive or eight other solenoid articles.
English WD-34 Feedback The points decoder WD-34 is RailCom compatible, i.e. the decoder is able to pass the RailCom messages via the rails to special RailCom detectors. This allows e.g. to feedback the correct performance of setting and switching commands or the actual setting of points. Power supply The points decoder WD-34 can either be supplied by the central unit or a booster. In order to release the digital electric circuit it is also possible to supply the decoder by a transformer of it´s own.
WD-34 English 5. Technical specifications Data format DCC, Motorola Adress range MM: 1020 DCC: 2040 Hint: The adress range to be used also depends from the control unit. Feedback log RailCom Supply voltage Digital voltage of the central unit or 14 – 20 V a.c. voltage Current consumption (without connected devices) approx. 40 mA Number of outputs 8 Max. total current 3.000 mA Max. current per output up to 2 seconds persistent 1.
English WD-34 6. Assembling the kit You can skip this part if you have purchased a ready-built module or device. Preparation Put the sorted components in front of you on your workbench. The separate electronic components have the following special features you should take into account in assembling: Resistors Resistors reduce current. The value of resistors for smaller power ratings is indicated through colour rings. Every colour stands for another figure.
WD-34 English Ceramic capacitors Among other things ceramic capacitors are used for filtering interference voltages or as frequency determining parts. Ceramic capacitors are not polarized. Normally they are marked with a three-digit number which indicates the value coded. The number 104 corresponds to the value 104. Electrolytic capacitors Electrolytic capacitors are often used to store energy. In contrast to ceramic capacitors they are polarized. The value is given on the casing.
English WD-34 Light emitting diodes (LEDs) When operated in the forward direction the LEDs light. They are available in several different versions (differing in colour, size, form, luminosity, maximum current, voltage limits). Light emitting diodes should always be connected via a series resistor which limits the current and prevents failure. Transistors Transistors are current amplifiers which convert low signals into stronger ones. There are several types in different package forms available.
WD-34 English Microcontrollers Microcontrollers are ICs, which are individually programmed for the particular application. The programmed controller are only available from the manufacturer of the circuit belonging to it. Opto couplers Opto couplers are ICs, which work similar to laser beam switches. They combine in one housing a light emitting diode and a photo transistor. Their task is the transmission of information without galvanic connection. They are in a DIL-housing with at least 4 pins.
English WD-34 Parts list Carbon film resistors 0,25 W R20, R26 33 R18, R27 100 R23, R25 220 R6, R19, R22 1 k R8, R9, R10, R11, R12, 1,5 k R13, R14, R15, R17 R1, R3, R7 2,2 k R21, R24 4,7 k R2, R5, R16 10 k Wire resistors 1 W R4 0,27 Ceramic capacitors C1, C6, C39 100 nF Electrolytic capacitors C10 100µF/25V C2, C3 (radial) or C4, C5 (axial) 220µF/25V Diodes Zener diodes D1, D2, D3, D4, D5, D6, 1N400x, x=2...
WD-34 Opto couplers English OK1, OK4 6N136 OK2, OK3 PC817 (2 pieces) or PC827 (1 piece) IC1 20-pole OK1, OK4, OK2/OK3 8-pole Double terminal strips X4 2 x 9-pole Solder pins JP1 2-pole IC-sockets Fig.
English WD-34 Assembly Proceed according to the order given in the list below. First solder the components on the solder side of the PCB and then cut the excess wires with the side cutter. Follow the instructions on soldering in section 3. ! Caution: Several components have to be mounted according to their polarity. When soldering these components the wrong way round, they can be damaged when you connect the power. In the worst case the whole circuit can be damaged.
WD-34 8. Solder pins 9. Transistors for a high power rating English Observe the polarity! With transistors for a high power rating in TO packages (e.g. BD types) the unlabelled back side is marked in the PCB layout by a thick line. 10. Electrolytic capacitors Observe the polarity! One of the two leads (the shorter one) is marked with a minus sign.
English WD-34 Performing a visual check Perform a visual check after the assembly of the module and remove faults if necessary: Remove all loose parts, wire ends or drops of solder from the PCB. Remove all sharp wire ends. Check that solder contacts which are close to each other are not unintentionally connected to each other. Risk of short circuit! Check that all components are polarised correctly. When you have remedied all faults, go on to the next part.
WD-34 English 7. Connecting the WD-34 The decoder has terminal strips inserted to plug in and screw on the connecting wires. Make the connections one after the other: to the accessories the central unit and the power supply. Power supply You can supply the decoder either via the central unit or via a seperate transformer according to the two following diagrams. Fig. 2: Power supply via central unit Fig.
English WD-34 Pin connections points decoder WD-34 Connection Points decoder WD-34 JP1 Programming jumper X1 Solenoid accessory / points 2 "straight on" X2 Solenoid accessory / points 2 return conductor X3 Solenoid accessory / points 2 "branching" X4 Solenoid accessory / points 4 "straight on" X5 Solenoid accessory / points 4 return conductor X6 Solenoid accessory / points 4 "branching" X7 not in use X8 Power supply / transformer (~) X9 Input DCC signal / central unit X10 Solenoid
WD-34 English 8. Programming the WD-34 You can program the configuration variables (CV) using a DCC digital central unit. See the chapter in the manual of your central unit where the byte wise programming of configuration variables (CVs) is explained. When using a Motorola central unit you can set the decoder address with a programming jumper. Changing the other decoder´s features is neither necessary in layouts run in Motorola format only nor possible with Motorola central units.
English WD-34 Setting the address with a programming jumper With Motorola central units the address can be set via a programming jumper only. When using DCC central units it is often easier to set the address via a programming jumper than to program it via CV. In order to set the address via a programming jumper perform the following steps: 1. Bridge the two pins of the programming connector JP1, by putting on the jumper included in the package. Take it away as soon as the LED flashes. 2.
WD-34 English Programming the configuration data for the WD-34 Name of CVs CV- Input value no. (Default) Remarks and tips On-time points 1 3 0, 1, 2 ... 255 (5) On-time points 2 4 0, 1, 2 ... 255 (5) On-time points 3 5 0, 1, 2 ... 255 (5) On-time points 4 6 0, 1, 2 ... 255 (5) In case the central unit sends a coiloff-signal, the on-time tallies with the minimal switching time.
English WD-34 9. Check list for troubleshooting Parts are getting too hot and/or start to smoke. ! Disconnect the system from the mains immediately! Possible cause: one or more components are soldered incorrectly. à In case you have mounted the module from a kit, perform a visual check (à section 6.) and if necessary, remedy the faults. Otherwise send in the module for repair. The decoder does not work.
WD-34 English Hotline: If problems with your module occur, our hotline is pleased to help you (mail address on the last page). Repairs: You can send in a defective module for repair (address on the last page). In case of guarantee the repair is free of charge for you. With damages not covered by guarantee, the maximum fee for the repair is the difference between the price for the ready-built module and the kit according to our valid price list.
English WD-34 10. Guarantee bond For this product we issue voluntarily a guarantee of 2 years from the date of purchase by the first customer, but in maximum 3 years after the end of series production. The first customer is the consumer first purchasing the product from us, a dealer or another natural or juristic person reselling or mounting the product on the basis of selfemployment. The guarantee exists supplementary to the legal warranty of merchantability due to the consumer by the seller.
WD-34 English 11. EU declaration of conformity This product conforms with the EC-directives mentioned below and is therefore CE certified. 2004/108/EG on electromagnetic. Underlying standards: EN 55014-1 and EN 61000-6-3. To guarantee the electromagnetic tolerance in operation you must take the following precautions: Connect the transformer only to an approved mains socket installed by an authorised electrician.
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