PID Controller Single Loop
|Output||4-20 mA or 0-20 mA|
|Ramp||1 to 20 programmable ramp|
|Control Signal||0-5 volt|
(1/16 DIN - Microcontroller Based)
Libratherm offers new PID controller, Model PID-480. This is designed and developed using the latest microcontroller chip and programmed with the time tested and field proven PID algorithm. PID controllers are mainly used for the precise process control. Unlike On/Off type of oscillatory control, PID control action gives smooth and steady state control. This model offer, all the useful features which are required to control the complex system.
This model accepts factory set single fixed input or the user selectable universal input. The control action is user selectable as PID or On/Off for both direct and reverse or Heat and Cool action. Control outputs are given in the form of optically isolated DC pulse to drive external SSR, Triac or AC SSR to operate AC operated load, electromechanical relay and/or linear analog output. The analog output levels can also be configured for (0-20)mA or (4-20)mA or (0-5) volt using the front panel keyboard.
In brief, PID-480 provides 2 switching outputs and 2 analog outputs. Both Auto and manual tuning of PID values makes the controller versatile and user friendly. The model PID-480 being small in size, can easily be accommodated in small size equipment. One Ramp/Soak function allows user to gradually increase the set value and hold the process value for desired soak time.
Libratherm also offers customized algorithm for special purpose applications, where user or OEM wants to have control and logic action to suit their application.