24VDC release relay, need help

Discussion in 'The Projects Forum' started by Kosakoskim, Dec 16, 2009.

  1. Kosakoskim

    Thread Starter New Member

    Dec 16, 2009
    I am doing a project where I need to use this relay to control a pneumatic solenoid. The relay is a potter and brumfeild 24VDc time delay release relay. Part # CDD-38-30014. I have tried following the wiring diagram but can get it to work. Would someone help explain how to wire this up. Thank you


    Delay on release – Input voltage must be applied continuously to operate
    the internal relay. When control Input is applied, the relay energizes.
    When control input is removed, timing begins. When timing is complete,
    the relay will de-energize. Time may be reset to zero during timing by
    reapplying control input.
  2. k7elp60

    AAC Fanatic!

    Nov 4, 2008
    They way I understand it the control voltage(24VDC) has to be applied and then removed. Once the voltage is removed the timing starts and the NO contacts close. After the delay the closed contacts open.

    I would wire both the - terminals together. I would use a SPST(mom) switch wired between the + supply terminal and + control terminal.
  3. Kosakoskim

    Thread Starter New Member

    Dec 16, 2009
    figured it out, turns out i had the + and minus backwards.