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  1. whatiscontrols

    Resetting Time for Integrator

    I'm trying to model a PI controller. The way it works is that for every 5 minutes of positive error an integrator number is incremented by 1. I want to know how to "reset" the timer for the discrete-time integrator so that when there is a zero crossing (i.e. positive to negative) a timer...
  2. whatiscontrols

    Tuning a PI controller with Feedforward for Solderbath Temperature

    PLC ANALOG INPUT MODULE CDS PT/NI100 IMC751 23-751 might as well put the whole thing down for clarity.
  3. whatiscontrols

    Tuning a PI controller with Feedforward for Solderbath Temperature

    All the heaters are controlled at once. I can not find any autotuning options in the software and I don't believe there are any. I'm not sure what the PID controller model is but the input is fed into the computer so doesn't that mean it is a "software PID (with feedforward)"? In the...
  4. whatiscontrols

    Tuning a PI controller with Feedforward for Solderbath Temperature

    I'm really new to control systems but have some basic knowledge... The problem I have is of a solderbath that is heated by 10 electrical heaters along the sides and bottom. Heaters are controlled by the computer using a duty cycle. The temperature of the solderbath is read at a thermocouple...

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