Omron H3Y 2 power off relay pls help

Discussion in 'The Projects Forum' started by krivis, Apr 30, 2014.

  1. krivis

    Thread Starter New Member

    Apr 30, 2014
    4
    1
    Hi

    I have bought two H3Y-2 time relays rated 0-30min and i want to do the following circuit.
    To be honest i'm little confused :)

    In my toilet i installed ventilation fan. I want the fan to run during the lights are on and 5 more minutes after i turn off the lights. On hand i have 12VDC relays and 12VDC adapters.

    Thanks in advance.
     
  2. inwo

    Well-Known Member

    Nov 7, 2013
    2,433
    315
    Which H3Y-2 do you have?
     
  3. krivis

    Thread Starter New Member

    Apr 30, 2014
    4
    1
  4. inwo

    Well-Known Member

    Nov 7, 2013
    2,433
    315
    Not the best solution.

    A time delay-off relay, rated at supply voltage is better.

    I'll draw it adapting to what you have.:)
     
  5. krivis

    Thread Starter New Member

    Apr 30, 2014
    4
    1
    Thank you :)
     
  6. inwo

    Well-Known Member

    Nov 7, 2013
    2,433
    315
    I'm still checking for errors.:p
     
  7. inwo

    Well-Known Member

    Nov 7, 2013
    2,433
    315
    Or this.............................................
     
  8. krivis

    Thread Starter New Member

    Apr 30, 2014
    4
    1
    I made the first schematics and it works perfectly :D. Thank you very very much inwo, you save me a lot of time and you saved my bathroom also :D. I hope i will return a favor one day.

    Have a nice day :)
     
    inwo likes this.
  9. Karel Sovak

    New Member

    Mar 12, 2016
    1
    0
    I solved the same problem with this scheme. I have 220 VAC relay Omron H3Y-2 AC200-230 30M. So I remove the trigger button and replaced by a normal switch.
     
    Last edited: Mar 12, 2016
  10. KeepItSimpleStupid

    Well-Known Member

    Mar 4, 2014
    1,143
    202
    krivis:

    I've been doing that for years. I actually have a spot light, heat lamp and ventilator.

    Two switches in a single gang box control the light and another controls the fan. The fan has a "delay on break" relay attached to it. I need like 20-30 minutes running after the switch for the fan is turned off. The timer is located in the attic and it needs to be replaced after 40+ years.

    it actually would be better to sense the bath/shower water flow and turn the fan on automatically.

    The IR lamp has a mechanical timer. 30 minutes would be better than 20.

    The next upgrade would be a better check valve and the flow switch.
     
  11. tevelz

    New Member

    Oct 10, 2016
    1
    0
    Hi There

    I'm trying to connect a bathroom fan exactly in the same manner, using an external switch.
    I have tried connecting the H3Y according to your schema but no results.:(. when connecting legs 13 and 14 to the mains (one hot and one natural, I hear the relay click and the 2 lights go on. when I bridged 13 and 9 and got the external input from 12, and connected the fan to 1 and .4 it didnt work. it only worked when connected to 1 and 5 but with no relayed off.
    any idea what am I doing wrong?

    thanks in Advance
    T
     
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