OpenSprinkler Forums Hardware Questions OpenSprinkler 12VDC pond pump control

  • This topic has 3 replies, 3 voices, and was last updated 6 years ago by Ray.
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  • #45089

    kerryk
    Participant

    I have used the DC version of Opensprinkler to control a 12V 5 watt pond pump. It works, but the pump is underpowered. I purchased this Fortric 12V 1.2A pump (https://www.amazon.com/gp/product/B01AA864ZQ/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1). I attached it to one station on the Opensprinkler and the station shows that it is running with a current of about 2.3 amp, but the pump does not operate. My power supply is a DC 12V 2A power supply, but I recall that there is a limit on the current draw (2.0A?) on the controller. Any suggestions on how I might get this combo to work? Thank you very much.

    Kerry
    MetroGrow Hawaii

    #45092

    szormpas
    Participant

    Hi Kerry,

    maybe the polarity is important for your pump. Have you tried to connect the red wire (positive) to com and the black wire (negative) to zone output?

    Sotirios

    #45098

    kerryk
    Participant

    Sotirios,

    Thanks, you got it! I forgot that I had to reverse the leads for my smaller pump too. I tried it out with the larger pump and it worked. It starts out with a higher current (I believe the default behavior to trigger the solenoids), then settles to about 1.3A.

    Kerry

    #45156

    Ray
    Keymaster

    OK, glad that you figured it out. Yes, the COM on OpenSprinkler DC is positive, and each station port is a MOSFET switch connected to ground (negative).

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OpenSprinkler Forums Hardware Questions OpenSprinkler 12VDC pond pump control