Stratos Multi E401N
216
PID Controller
This controller contains the P, I, and D basic action of linear controllers. In the PID control system, the
manipulated variable corresponds to an addition of the output variables of a P, I, and D control system.
The PID controller has an even lower maximum overshoot than the PD controller. Due to the I action
component, it does not exhibit any permanent control deviation. The basic action (P, I, D) of a PID
controller, however, produces a universally applicable, classic controller by the fast intervention of the
P action, by the regulating property of the I component, and the damping effect of the D action.
Typical Applications
P controller: Use in integral control systems (e.g., closed tank, batch processes).
PI controller: Use in non-integral control systems (e.g., drains).
PID controller: The additional derivative action compensates for measurement peaks.
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