INSTRUCTIONS FOR USE Temperature switch with sensor monitoring Part No.
Important! Must read! The warranty claim becomes null and void in case of damages arising out of nonadherence to the instructions for use. We do not assume any liability for consequential damages caused by this. Table of contents Page Intended use …………………………………………………………………………….4 Safety guidelines ……………………………………………………………………….4 Product description ……………………………………………………………………..5 Description of circuit ……………………………………………………………………6 Technical data …………………………………………………………………………..
• Consumers connected to the assembly may not exceed a connected load of maximum 500 watt! • The device can be operated in any position. • While installing the device, attention must be paid to adequate cable crosssection of the connection cables! • While pulling out the mains cable always pull at the plug and never pull at the cable. Never place heavy objects on the mains cable and do not bend it in a very narrow radius or around sharp edges.
• The device can be damaged, if a liquid penetrates in it. In case you have spilt any liquid in or over the assembly, then get the device checked by a qualified expert. Intended use The intended use of the device is the switching of electrical consumers if a previously set temperature is fallen short of or exceeded.
• Please note that connection or operational faults lie outside of our circle of influence. Understandably, we are not liable for damages caused by these reasons. • If a component is not working, it must be returned with an exact description of the fault (specify what is not working... because only an exact description of the fault can enable a proper repair!), the related construction manual as well as without the casing.
If the actual value lies below the reference value, then heat must be supplied and consequently a corresponding heating is switched on (this is the operating point number one); as soon as the reference value is reached, the heating is switched off (operating point number two). Technical data Operating voltage: Switching temperature range: Relay contact: Dimensions: 220-240 V-/50 Hz -10 °C to +110 °C 16 A 1 x U max.
Pay attention to the capacitor values e.g. n 10 = 100 pF (not 10 nF). Checking twice and thrice can help here. Also see to it that all the IC contacts are actually inserted in the socket. It can happen very easily that one of these gets bent during insertion. A slight pressure and the IC must go in the socket all by itself. If this does not happen, then probably one of the contacts is bent. If everything is OK here, then the next place to look for a possible fault is a cold solder joint.
While soldering the components see to it that they (unless indicated otherwise) are soldered on to the plate without any gap. All projecting connection wires are cut directly above the solder joint. Since the solder points in this kit are very small ones, lying partly very close to one another (risk of solder straps), the soldering must be done here only with a soldering iron with a small soldering tip. Do all the soldering and assembly work very carefully.
. When soldering semi-conductors, LEDs and ICs special attention must be paid to the fact that the soldering time does not exceed approx. 5 seconds, as otherwise the component gets destroyed. Similarly, attention must also be paid to the correct polarity in case of these components. 10. After mounting, check each circuit once again to see that all components are inserted correctly and polarised. Also check, whether the connections or conducting pathways have not been bridged by mistake with tin.
1.2 Diodes Now, the connection wires of the diodes are bent at right angles conforming to the contact spacing and inserted in the openings provided (as per the component diagram). Always see to it here that the diodes are inserted in a correctly polarised way (position of the cathode line)! In order that the diodes do not fall out when the printed circuit board is turned over, bend the connection wires away from one another by approx.
1.4 Transistor In this work step the transistor is set according to the imprint on the printed circuit board and is soldered on the soldering side. Please make a note of the position: The outlines of the casing must match those given on the printed circuit board. Orient yourself hereby to the flattened side of the transistor casing. The contact pins may not cross in any case; furthermore, the component should be soldered with a gap of approx. 5 mm to the circuit board.
1.7 Terminal clamps Insert now the screw terminals in the corresponding positions on the circuit board and solder the connection pins cleanly on the side of the conducting paths. Owing to the larger ground plane and terminal clamp, the solder joint must be heated here for longer than normal, till the tin flows properly and forms a clean solder joint. 2 x terminal clamp 2-pin 1 x terminal clamp 3-pin 1.
Orient yourself here to the flattened side of the casing of the IC. The contact pins may not cross in any case; furthermore, the component should be soldered with a gap of approx. 5 mm to the circuit board. Pay attention to a short soldering time, so that the integrated voltage regulator is not destroyed through overheating. IC1 = 78 L 05 5 V-fixed voltage regulator (same casing as T1!) 1.
Caution! Integrated circuits are very sensitive to incorrect polarity! For this reason, pay attention to the corresponding marking on the ICs (notch or point). IC 1 = ATiny13 (programmed micro-controller) 1.15 Final check Before starting-up, check the printed circuit board once again that all the components have been inserted properly and with the correct polarity.
Pay attention to the adherence to VDE-guidelines! In case measurements are to be done at the live parts of the circuit, the circuit must then be connected to a safety-isolating transformer. In no case should measurements be conducted on the circuit, when it is directly connected to the mains (risk to life!). Although the circuit is simply a replica, in case of non-functioning it should be checked only by an expert, because he is adequately familiar with the applicable safety regulations. 2.
2.3 Rotate now the wiper of P1 and P2 middle position. 2.4 You can do a functional test as follows: If the temperature sensor is missing, then in every case the red light-emitting diode LED2 (sensor break) should glow upon the application of operating voltage. Connect now the terminal clamp X3 to the temperature sensor KTY 81-220, depending upon the setting and temperature, the yellow LED (relay) glows.
Compare the polarity printed on the electrolytic capacitors once again with the print on the circuit board or in the component diagram in the construction manual.
substances conduct electricity and thereby cause creep currents and shortcircuits. f Furthermore, the warranty of the components soldered with acidic soldering tin or similar materials becomes null and void and we can then no longer repair or replace these components. 2.7 If all these points have been checked and faults, if any, have been removed, then connect the printed circuit board again as per the instructions given in 2.2.
else does these himself, the costs incurred thereby will neither be taken over nor reimbursed. We assume neither a warranty nor any kind of liability for damages or consequential damages caused in the context of this product. We reserve the right to repair or improve the device, deliver the spare parts or refund the purchase price. If you do not agree to the stipulated conditions, then you can return the device in its original packing within 14 days for a refund of your purchase price.
• in case of use of other components not originally belonging to the kit • in case of destruction of conducting paths or soldering eyes • in case of incorrect equipping and the consequential damages resulting from this • in case of overloading of the module • in case of damages caused by interventions through external persons • in case of damages caused by a non-adherence to the installation instructions and the connection plan • in case of connection to an incorrect type of voltage or current
Imprint These instructions for use are published by Conrad Electronic GmbH, Klaus-Conrad-Straße 1, D-92240 Hirschau. All rights including those of translations reserved. Reproduction of any kind e.g. photocopy, micro-filming, or entry in EDP systems requires a prior written permission of the publisher. Reprinting, even in parts, is prohibited. These instructions for use conform to the state-of-the-art technology at the time of printing. Subject to changes in technology and equipment.