Increasing Relay Output Current

Discussion in 'The Projects Forum' started by Jimminy, Jul 23, 2014.

  1. Jimminy

    Thread Starter New Member

    Jul 23, 2014
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    I'm not great when it comes to electronics so i hope this makes sense.
    I'm looking to use a zelio logic 2 module to control two 20w 24vdc solenoid valves. The output from the device is stated as ">= 10 mA at 12 V (relay output)". I'm assuming i need something to boost the current for use with the solenoids? What is the best way to do this?
     
  2. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
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    Got a datasheet or part number for the specific module you are using?
    The one I see says the relay outputs can do up to 8 Amps..
     
  3. Jimminy

    Thread Starter New Member

    Jul 23, 2014
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    SR2A101BD
    think thats the part number
    from schneider-electrics
     
  4. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
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    Says you can switch up to 8A..
    switching current must be "greater" than 10mA..

    You should be able to use AS IS to switch your solenoid..
     
  5. Jimminy

    Thread Starter New Member

    Jul 23, 2014
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    Brilliant thanks for the help. It said "output thermal current" so i wasn't quite sure what it meant.
     
  6. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
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    Personally I don't really either.. :) Thats some silly "Schneider" technical term that only their technical writer knows what it really means.. and the rest of us just make an educated guess.

    I'd guess that the intent of that is to ensure that the total current through all 4 relays does not exceed 8 Amps due to heating from relay/contact dissipation.

    So all is good if all 4 outputs are switching 2A
    or 1 switching 8A
    or 2 switching 4A
    ,etc...
     
  7. Jimminy

    Thread Starter New Member

    Jul 23, 2014
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  8. mcgyvr

    AAC Fanatic!

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    no problems IMO..
    Seems like just a switched output..
    level low = no output voltage
    level high = output voltage..
     
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