Help wiring a 2 wire solenoid valve with a solid-state relay

Discussion in 'General Electronics Chat' started by Dakk33, Jun 19, 2019.

  1. Dakk33

    Thread Starter New Member

    Jun 19, 2019
    4
    0
    Hello,

    To start off I'm fairly new with electronics so please excuse any ignorance.

    My end goal is to be able to actuate a solenoid valve by sending a 5V signal to the relay.

    Relay: https://www.mouser.com/datasheet/2/240/CPC1706-1548577.pdf
    Solenoid: https://www.parker.com/Literature/P...re Solenoid Valves/Series 9 Gas datasheet.pdf

    My power source is a 6 cell, 22.2V 4500mAh Lipo battery connected through a 24V step-up DC booster (https://www.pololu.com/product/2582)

    I'm not very familiar with the solenoid or relay. I do know that I need a resistor on the negative end of the signal for the relay, I have a 1k resistor there and am sending a 5V signal with a DC power supply (later this will be controlled with a microcontroller of some sort). I've seen that it's common to put a diode in parallel with the solenoid, however I'm not sure why this is or what kind of diode I will need. Also, I feel that I need a resistor of some sort in series with the solenoid but am not sure.

    Any help (or circuit diagram) would be very much appreciated.

    Thank you
     
  2. MaxHeadRoom

    Expert

    Jul 18, 2013
    18,414
    5,654
    You may not need the DC boost, as the relay should operate a some point below its rated voltage.
    And with a 500ma consumption, should not be excessive load for a LiPo battery.
    Using a resistor for test purposes, it does not matter what lead you wire it in on the relay input.
    Those are Hi speed dispensing solenoids, so keep in mind that any diode suppression is going to slow the output switch off some. That is if needing the Hi speed feature.
    Max.
     
  3. Dakk33

    Thread Starter New Member

    Jun 19, 2019
    4
    0
    I'm not sure we will need an incredibly high speed response (not upwards of the rated 6ms). Would you recommend a flyback diode? If so, what type should I be looking for?
     
  4. MaxHeadRoom

    Expert

    Jul 18, 2013
    18,414
    5,654
    Any of the 1n400x I keep 1n4007 as this cover most applications.
    Max.
     
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