Instructions

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K2579

H2579IP-2

UNIVERSAL START/STOP TIMER

Specifications

Relay output with switchover contact.

Power supply : 12VDC regulated.

Typical active current : 55mA.

Relay output : 2A/240V max.

 Dimensions : 35x70mm / 1.37x2.75"'

Summary of content (12 pages)

PAGE 1
UNIVERSAL START/STOP TIMER K2579 p to provides u r e m ti e iz Small s s delay. 60 minute Specifications Relay output with switchover contact. Power supply : 12VDC regulated. Typical active current : 55mA. Relay output : 2A/240V max.  Dimensions : 35x70mm / 1.37x2.
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VELLEMAN NV Legen Heirweg 33 9890 Gavere Belgium Europe www.velleman.be www.velleman-kit.
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Features & Specifications The K2579 is a basic timer with relay output for time intervals of up to 15 minutes. Set the desired delay with the trimmer. The maximum delay can easily be lengthened and the timer can be stopped and restarted at any time. Features  Start / stop push buttons included. LED status indicator. Timing adjustable from a few seconds to 15 minutes, extendable to 60 minutes. Relay output with switchover contact. Specifications :  Power supply : 12VDC regulated.
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Assembly hints 1. Assembly (Skipping this can lead to troubles ! ) Ok, so we have your attention. These hints will help you to make this project successful. Read them carefully. 1.1 Make sure you have the right tools:  A good quality soldering iron (25-40W) with a small tip.  Wipe it often on a wet sponge or cloth, to keep it clean; then apply solder to the tip, to give it a wet look. This is called ‘thinning’ and will protect the tip, and enables you to make good connections.
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REMOVE THEM FROM THE TAPE ONE AT A TIME ! DO NOT BLINDLY FOLLOW THE ORDER OF THE COMPONENTS ONTO THE TAPE.
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Construction 1. Diode. Watch the polarity ! 3. IC socket. Check the position of the notch! 6. Transistor  IC : 8p. 7. Electrolytic Capacitor. Watch the polarity !  D1 : 1N4148 CATHODE 2. Resistor R... D... 4. Capacitor  C1 : 100nF  R1  R2  R3  R4  R5  R6  R7 : : : : : : : 1K 10K 4K7 1K 10K 4K7 1K (1 - 0 - 2 - B) (1 - 0 - 3 - B) (4 - 7 - 2 - B) (1 - 0 - 2 - B) (1 - 0 - 3 - B) (4 - 7 - 2 - B) (1 - 0 - 2 - B)  T1 : BC547B 5. Trim potentiometer C...  C2 : 100µF C... 8.
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Construction 9. Push buttons  SW1 : START  SW2 : STOP 10. Relay  RY : VR15M121C RY... 11. IC.
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Connection example 12.
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Hook-up and use 13. Hook-up and use Connect the unit with a 12VDC regulated power supply as shown in the example. Turn the trimmer all the way counterclockwise. Push the START button. The relay will be activated momentarily. The position of the trimmer determines the ON-time. Turn it clockwise to increase the ON-time. Increase the value of C2 for an even longer activation duration. The unit can be stopped at any time by pressing the STOP button.
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PCB 10. PCB layout. 14.
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Diagram 15.
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VELLEMAN NV Legen Heirweg 33, B-9890 GAVERE Belgium (Europe) Modifications and typographical errors reserved - © Velleman nv. H2579P - 2012 - ED2 (rev.