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Relay connection, ignition cut off - how?

Rolak88 8427 16
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
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  • #1 16184506
    Rolak88
    Level 7  
    Hello, I have a problem with connecting the transmitter in the car. I will start from the beginning in a car cut off the ignition I have a cable on which after ignition I have 12v after disconnecting it does not fire myself, I would like to use the relay attached in the picture below to press the contactor after ignition so that the relay lets current and start the car such a small protection against thieves. Please help me describe how to connect the relay and my contactor. I don't have much to do with electronics, please help. [/ B]
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  • Helpful post
    #2 16184659
    leonov
    Level 43  
    At the beginning do not write "contactor" but a switch, on the relay you have the descriptions of the pins:

    85 and 86 - powering the relay coil
    30 - permanent contact
    87 - normally closed contact
    87a - normally open contact

    that is, you connect what you want to "cut off" to 30 and 87a
    you supply the relay with a switch on 85 and 86
  • Helpful post
    #3 16184689
    Zbigniew 400
    Level 38  
    The ignition must not be stopped. Cut off power to the starter.
  • #4 16185175
    Rolak88
    Level 7  
    Thank you for the answer, but I am sure. So after connecting what you described to me, it will work out: after turning the ignition switch off I will have to press the switch and then I will start the car? because that's my goal. best regards
  • #5 16185199
    zumik998
    Level 15  
    Cutting off the starter power supply is indeed an effective way of protection, however, the thief will immediately know about the presence of protection when trying to start the engine, what you think about cutting off the fuel pump supply, then the thief will start, and after a while it will go out because he will run out of fuel in the lines, such an event will draw the attention of more people :)
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  • #6 16185232
    leonov
    Level 43  
    Rolak88 wrote:
    So after connecting what you described to me, it will work out: after turning the ignition switch off I will have to press the switch and then I will start the car? because that's my goal.
    Yes, if the power supply to the switch goes after the ignition switch, if you supply power permanently, regardless of the ignition switch, only the switch is enough.
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  • #7 16185250
    Rolak88
    Level 7  
    Romum, but I plan to make a switch as a micro contact that I press after ignition and he will turn on the relay. I am not a professional and I do not know if I use good phrases
  • #8 16185259
    leonov
    Level 43  
    Rolak88 wrote:
    I plan to make the switch as a micro contact that I press after ignition and he will switch on the relay
    Something like that ?

    Relay connection, ignition cut off - how?
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  • #9 16185291
    Rolak88
    Level 7  
    That's exactly what I mean and after pressing it switches on the relay and the car lights
  • #12 16185355
    leonov
    Level 43  
    Rolak88 wrote:
    they said it was suitable
    Not suitable, read the topic I gave above.
  • #13 16204791
    Marian B
    Level 38  
    For safety reasons, every hidden button should work in such a way that after the engine stops unexpectedly, e.g. on tram, railway or intersection tracks, the engine can be started immediately without pressing any additional buttons within a certain period of time, e.g. 30 seconds from stopping engine.
    Here is a security that meets this condition:
    https://www.elektroda.pl/rtvforum/topic1389941.html#6874840

    This is very important, because in a stressful situation you can get lost, you do not know what to do first, press or "turn" the key, or both.
  • #14 16205106
    milejow

    Level 43  
    leonov wrote:
    Well, this relay will not work

    It will be like it will support the relay coil by the separating diode and will cut off the plus not dying when turning the starter.
  • #15 16205226
    leonov
    Level 43  
    milejow wrote:
    It will be like doing a relay coil support
    And what did I write above?

    leonov wrote:
    Well, this relay will not work, you must have a relay with support
  • #16 16207426
    milejow

    Level 43  
    leonov wrote:
    Well, this relay will not work, you must have a relay with support

    Then you will deny yourself.
  • #17 16208216
    leonov
    Level 43  
    milejow wrote:
    Then you will deny yourself.
    Let the author connect him and write you if it works for him, the topic is closed to me.
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Topic summary

The discussion revolves around connecting a relay to a car's ignition system to create a theft prevention mechanism. The user seeks guidance on wiring a relay to cut off the starter power supply after the ignition is turned off. Responses clarify the relay pin configuration: pins 85 and 86 for the relay coil, pin 30 for permanent contact, and pin 87a for normally open contact. Suggestions include cutting off the fuel pump supply instead of the starter to enhance security. The user expresses a desire to use a micro switch to activate the relay after ignition. Concerns are raised about the relay's suitability and the importance of ensuring that the engine can be restarted without additional button presses in emergencies.
Summary generated by the language model.
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