Component selection to take 2 inputs, and 1 output

Discussion in 'Automotive Electronics' started by Tbody321, Feb 12, 2019.

  1. Tbody321

    Thread Starter New Member

    Feb 12, 2019
    8
    1
    Hello all,
    Newbie here to forum and hopefully i can find answers, suggestions to help with a project.
    I have 2 switches each switch needs to power a manifold relay to open a port.
    I can try and explain further if needed.
    Thank you in advance.
    12v system
     
  2. wayneh

    Expert

    Sep 9, 2010
    15,560
    5,763
    Welcome to the AAC forums.

    People here will indeed try to help you find answers, but you need to ask questions. I didn't see one. ;)
    The more details the better.
     
  3. Tbody321

    Thread Starter New Member

    Feb 12, 2019
    8
    1
    I am trying to figure out how to take 2 switches , wire them to a relay and each switch powers the same circuit.
    2 inputs 1 output.
    Not sure what relay to use, dpdt, spdt etc.. this circuit is for an air shock system on a motorcycle.

    What relay, and how to wire to 12v system

    Thanks
     
  4. BobTPH

    Senior Member

    Jun 5, 2013
    1,371
    308
    Depends on how you want the switches to operate. Does the relay activate when either switch is on? Only when both switches are on? When one switch is on and the other is off?

    Bob
     
  5. iONic

    AAC Fanatic!

    Nov 16, 2007
    1,606
    88
  6. Tbody321

    Thread Starter New Member

    Feb 12, 2019
    8
    1
    I need 1 switch to open a solenoid to allow air to shock, 2nd switch needs to open same solenoid to allow air to shock. The shocks im using have 2 air chambers, i need to fill one chamer with 1 switch and 2nd switch for second chamber. I appologize if this is confusing or unclear. Oh, the solenoid only has one connection to open.
     
  7. sghioto

    Active Member

    Dec 31, 2017
    661
    93
    Yes it is confusing but from your description it would appear that you simply need two solenoids.
    SG
     
  8. KeepItSimpleStupid

    Distinguished Member

    Mar 4, 2014
    3,055
    541
    Confusing for sure.

    Does this make any sense to the TS?

    You can have two solenoids which have 3 ports. Solenoids such as this can manifold the supply air. So, one port is the air supply.
    the 2nd port goes to the cylinder. There is a third port that may or may not have a fitting. This is the vent.

    Not sure if you want anything more than either or both chambers can be filled. i.e. Switch one on, chamber 1 filled. Switch 1 off, chamber 1 vented. You also need to consider the default unpowered state.

    A needle valve can be placed in the exhaust port to slow emptying and in the supply port to slow filling.

    There are 4-way valves with integral needle valves for dual acting air cylinders. One side pushes one way and the other side pushes the other.
    When you push, you also have to vent the opposite side and possibly change the rate of opening or closing. This can be done with one valve.
     
  9. Tbody321

    Thread Starter New Member

    Feb 12, 2019
    8
    1
    ill try my best again to explain what the circuit needs to do and not do.

    I have 2 spdt switches , each switch is normally open until you switch up, or switch down
    both switches currently are wired with a relay and diodes and the circuit powers a compressor to fill'
    one of 2 chambers.(the reason for 2 switches) (internal to the shock is a valve that allows air to go to one of the 2 chambers by which switch you activate). what I have and what im trying to accomplish

    switch 1 when switched to up position, a manifold opens allowing air to shock.
    switch 2 when switched to up position same manifold connection open to allow air in.
    both switches will not be operated at once.
    I w
     
  10. sghioto

    Active Member

    Dec 31, 2017
    661
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    I'm throwing this out there assuming this is what you are looking for.
    SG
    EEE shock switch.PNG
     
  11. KeepItSimpleStupid

    Distinguished Member

    Mar 4, 2014
    3,055
    541
    @sghioto basically drew you a circuit where each switch controls a chamber AND if any switch is ON, the compressor turns on too.
     
  12. BR-549

    AAC Fanatic!

    Sep 22, 2013
    4,397
    1,188
    Have you got a link to the shock system? Both the control system and strategy is un-clear.
     
  13. Tbody321

    Thread Starter New Member

    Feb 12, 2019
    8
    1
    The company does not provide a wiring install drawing. What i did, i took.there wiring harness, duplicated it onto a mounting bracket for one central.location of connections. It does work as pictured. And i belive previous post @sghioto provided. I had the same thought but was not clear to me of it would work.
     
  14. Tbody321

    Thread Starter New Member

    Feb 12, 2019
    8
    1

    Thanks for diagram, i had thought something this would but it wasnt very clear to me if it would work. I investigated last night and got a little more familar with diodes. The way it looks too me is

    If sw 1 is activated the diode prevents voltage going to sw 2 and vice versa. Do you think i would need a relay before solenoid on manifold? Im hope to be using correct terms. Trying to learn this.
     
  15. sghioto

    Active Member

    Dec 31, 2017
    661
    93
    That would depend on how much current the solenoid valves draw and the current limit of the switches. Same for the compressor and diodes.
    SG
     
  16. Tbody321

    Thread Starter New Member

    Feb 12, 2019
    8
    1
    Thanks folks for all the replys. Im researching diodes and how to determine the right one.. anyone know of a free electrical schematic program. Ide like to draw the circuit up
     
  17. sghioto

    Active Member

    Dec 31, 2017
    661
    93
    I do all my schematics in Windows Paint. I save a whole bunch of schematic symbols and illustrated components in a separate folder that I can copy and paste from.
    SG
     
  18. Tbody321

    Thread Starter New Member

    Feb 12, 2019
    8
    1
    Thanks for all the responses. Im glad i found this site, took your input and researched an applied. I completed the circuit using the diagram shared. I used 2 doides, connected after diodes do the "UP" side of solenoid. From what ive learned, each switch will power solenoid and the diodes keeps the voltage seperate from each switch. Probably not explaining it tight, but it worked.... my next step is to determine if one of the pre made dual relay circuit boards will apply to my application. If not, i may give creating my own circuit board.. thanks again..
    Great site
     
    sghioto likes this.
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