Mypin ta4 snr pid temp controller

Discussion in 'Other Builds' started by sn1per9000, Sep 28, 2014.

  1. Ok so I'm new to the forum. I decided to try making a pid controller for fun. I generally never have any temp issues smoking on my webber kettle. This is literally a for the fun of it project.

    Well it's not fun now...... I'm pretty sure the pid is bad in some fashion. I set the target temp. to 100 degrees f for testing when I put the prob in the hot water it hits the temp and the ssr never switches my fan off. I have hooked my multi-meter to pins 3 and 4. Not matter what the temp is the voltage stays at 24v dc. Any ideas? Am I right to assume the pid is bad?

    I have a new one on the way and the old one goes bad tomorrow in ups.
     
  2. jckdanls 07

    jckdanls 07 Master of the Pit Group Lead OTBS Member

    let me see If I have this right... You set your target temp at 100` ??.. Then you stick the probe into hot water... how hot ?? the probe reading should tell you ... If it's over 100` (set point).. the fan will not come on as you are already over your target temp... do you have a wiring diagram you can post ??
     
  3. The idea is the fan should be on until I hit 100 degrees. Then it should switch off until the temp gets back to -100 degrees.

    Here is a diagram.
     
  4. jckdanls 07

    jckdanls 07 Master of the Pit Group Lead OTBS Member

  5. jckdanls 07

    jckdanls 07 Master of the Pit Group Lead OTBS Member

    after looking at his thread.. thinking you might have the TC hooked up wrong... it looks like it's suppose to be on terminals 8 and 9.. also the TC has a NEG and POS... make sure you have those correct as well...
     
  6. T.C. is hooked up according to the diagram on my ta4. Interesting that the other thread says several times that they show up doa all the time.
     
    Last edited: Sep 28, 2014
  7. jckdanls 07

    jckdanls 07 Master of the Pit Group Lead OTBS Member

    ok.. well.. wait until the new one arrives and give it a try.... if it does the same thing then maybe something in the parameters is set wrong...
     
  8. jckdanls 07

    jckdanls 07 Master of the Pit Group Lead OTBS Member

    do you have the parameter for the TC set on the right type ?? J, K, or whatever type it is ?? just checking all options
     
  9. Sorry I didn't get back sooner. I did have it set to K. My new controller just arrived. I will try to set it up tonight to see if I have the problem solved.
     
  10. Ok so it turns out the first pid I got was bad. It took about two minutes to wire the test up to check. Tommorow I will go buy the box and build it. My goal is to post as much info as I can about how to build a box. I have had a lot of trouble finding a good walk through.
     

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