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Thema: Setting for TK1000

  1. #1
    Registriert seit
    05.06.2017
    Beiträge
    3

    Standard Setting for TK1000

    Hello, i just got my P4 last week, just stared doing the setup
    I am using TECO TK1000, the current setting is Nominal Temp : 25C, Hysteresis: 1C on the TECO. I should put these values into P4, right? What value should I put on the cooling difference in P4? And I should set the Nominal Temp of TECO to something lower than 25C e.g. 24C, am i correct? Thanks for the help.

  2. #2
    Registriert seit
    14.08.2010
    Beiträge
    2.389

    Standard

    Hello, I think this will help you

    Example for calculating the upper and lower temperature alarm limit
    nominal point 26.0 °C
    Nightly change by -2 °C active
    overall hysteresis 0.2 °C
    maximum deviation 1.5 °C cooling difference 2.0 °C
    so that means:
    Lower limit = 26.0 °C - 2.0 °C -? * 0.2 °C - 1.5 °C = 22.4 °C
    Upper limit = 26.0 °C + 5/6 * 0.2 °C + 1.5 °C + 2.0 °C = 27.7 °C
    (5/6 due to the upper switching point of the cooling system, see also 3.4 Hysteresis)

    regards Pit

  3. #3
    Registriert seit
    05.06.2017
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    3

    Standard

    Thanks Pit.

    As i am not using the Nightly change and also haven't set any alarm yet, so i think the equations should reduce to this:
    Lower limit: Nominal -0.5*Hysteresis
    Upper limit: Nominal +5/6*Hysteresis + cooling difference

    I have set the Nominal 25C, Hysteresis 1C and Cooling difference 0.5C
    Lower limit = 24.5C
    Upper limit = 26.3C

    My P4 will turn on chiller at ~26.4C, but it will turn off the chiller at ~26C.
    Am i setting it correctly? Do i miss anything? Please help check. Thanks.

    Kary

  4. #4
    Registriert seit
    14.08.2010
    Beiträge
    2.389

    Standard

    Hallo Kary
    I guess the cooler should be turned on at about 26.3°C and then cool down to ~24.5°C. Do I understand this correctly?
    How do you control your Ciller? With a Powerbat? How is this set?

    regards Pit

  5. #5
    Registriert seit
    05.06.2017
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    3

    Standard

    The chiller is connected to Powerbar, and "Function" is set to be Temperature 1 (the temperature probe) and "Sub function" set to Cooler.
    The chiller is turned on (by the P4) at 26.4C (25C + 5/6*1 + 0.5 = 26.33C), but it is turned off at ~26C by the P4. It just fluctuate between 26 and 26.4C.

    temperature.jpg

    Kary

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