Intended use The relay circuit board RL-2 is designed to be operated according to the instructions in this manual in model building, especially with model railways. Any other use is inappropriate and invalidates any guarantees.
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English RL-2 Required materials For assembling the kit you need: an electronic soldering iron (max. 30 Watt) or a regulated soldering iron with a fine tip and a soldering iron stand, a tip-cleaning sponge, a heat-resistant mat, ...
RL-2 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.
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English RL-2 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.
RL-2 English 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. 30 Watt or a regulated soldering iron.
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English RL-2 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.
RL-2 English 4. Operation overview The module switches a bistable relay with two switches which are separate from each other. It is triggered by 12 to 18 Volt direct (d.c.) or alternating (a.c.) voltage. The relay is switched by an earth contact and can be switched by any earth compatible output (e.g.
English RL-2 6. Assembling the kit You can skip this part if you have purchased a ready-built module. 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.
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RL-2 English Bistable relays keep their status after switching – comparable to a switch. Relays which combine two switches in one housing are common as well (shortly 2xUM). The switching between the two connections can be heard clearly because of the resulting clicking sound.
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English RL-2 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.
RL-2 English 7. Performing a functional test You can perform a functional test with an electric light bulb before mounting the relay circuit board. First connect the relay circuit board and the light bulb as follows: Relay circuit board Connection to transformer / -...
English RL-2 8. Connecting the relay circuit board Connecting the power supply If you use a d.c. transformer for the power supply of the relay circuit board, you have to regard the polarity when connecting it, if using an a.c. transformer the polarity is of no importance. If you supply several components by one a.c.
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RL-2 English Fig. 2: Connections It shows as an example, the connection of the relay circuit board to a double purpose light signal. Page 15...
English RL-2 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...
RL-2 English 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...
English RL-2 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: ...