A Fresh Engineer (Customer) asked a question.

March 23, 2023 at 3:34 PM
How does the interface relay connect to the PLC and my Solenoid valve?

I just got an interface relay and solenoid. Here is the relay I got. I am using a click c0-12DRE-1-D with the c0-00AC power supply.

relay 

I tested out the solenoid by itself and it worked fine (has 3 wires, ground, positive, negative). Then, I connected the relay A1+ to the 24v on my power supply and A2- to Y1 on my PLC, I have a common running from 0v to Ch2 on the plc. The solenoid ground wire is connected to the power supply ground, the positive wire on the solenoid is going to 14 and the negative wire is going to 12.

When I turn on output y1 the relay turns its green led on meaning it works but then the solenoid does not actuate. Did I wire up the solenoid wrong to the relay? The relay works as in its getting power, it's just not outputting it to the solenoid.

 

Can anyone help me and wire this correctly?

  • 9 answers
  • 1.13K views

  • Todd Dice (Customer)

    I typically wire PLC I/O conventional flow (0V is common, operate items by enabling/disabling the +24V).

     

    Following how I wire, connect the relay's A1+ to output Y001, connect the A2- to your power supply's negative and to C1 and both ACom's of the Click. Connect +24V to C2 of the click and to terminal 11 of the relay. Connect your valve +24 wire to terminal 14 of the relay, and the valve's 0V wire to the power supply's negative. Ground wire to ground/Earth.

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  • RBPLC (Customer)

    When posting questions like this, it's usually better to post photos and/or drawings as well. That being said, wiring to 12 and 14 is not correct. If it's a 120 V solenoid, typically the ground will go to ground, the neutral will tie into neutral and 120V power will be wired into 11. At this point an additional wire will run from 14 to the 120V (hot) side of the solenoid. You generally need fusing on the 11 line to prevent damage from shorts/over current.

    • kewakl (Customer)

      >wiring to 12 and 14 is not correct

       

      I think that @ADC_Community_2 accidentally introduced this confusion through a typo in a response on the other thread.

       

      >If you reference the wiring diagram printed on the side you will see you can wire either as a Normally Closed (pins 11 & 12) or Normally Open contact (pins 12 & 14).

      I have requested an edit for that post. :)

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      • ADC Community_02 (Automationdirect.com)

        Thanks for the heads up. It was a typo mistake on my end. I have corrected the post.

  • Todd Dice (Customer)

    I typically wire PLC I/O conventional flow (0V is common, operate items by enabling/disabling the +24V).

     

    Following how I wire, connect the relay's A1+ to output Y001, connect the A2- to your power supply's negative and to C1 and both ACom's of the Click. Connect +24V to C2 of the click and to terminal 11 of the relay. Connect your valve +24 wire to terminal 14 of the relay, and the valve's 0V wire to the power supply's negative. Ground wire to ground/Earth.

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  • PouchesInc (Customer)

    The solenoid cant have both its terminals going to the relay, as the relay has nothing to switch and no power is on the solenoid side of the circuit. You have to do the same thing to the solenoid side as you did on the PLC side. One side of your solenoid goes to neutral, the other side goes to the relay. The incoming relay contact side goes to line.

     

    Additionally, 12 and 14 are the wrong terminals. 11 is the input to the relay contact side. 12 is the NC output and 14 is the NO output. Wiring between 12 and 14 will do nothing.

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  • kewakl (Customer)

    Wow! Are all Murr modules produced with legible/high contrast marking like we see in the image.

    I wish that Prosense modules had legible/readable marking like this.

     

    The storefront images of the Prosense signal conditioners look great, but the actual items do not compare to those images. I have some modules with blurry/very low contrast markings. :(

     

    It seems that even in low/poor lighting we can make out all the data on the Murr module.

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    • Durallymax (Customer)

      The Murrs I've used are all legible. Haven't had issues with the prosense signal conditioners either though, but is tough to make out in low light.

      • kewakl (Customer)

        Thank you for the response. Much appreciated.

  • kewakl (Customer)

     

    Maybe something like one of these layouts.

    I do not have a Murr relay or docs readily available, so I cannot make the drawing resemble the physical layout.Click-Murr-Sol.jpg

 

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