CONTROL METHODS (CONTINUE)
Proportional plus Integral plus Derivative (PID) Control
Use derivative (rate) control to minimize the overshoot in a PI-controlled system. Derivative (rate) adjusts the output
based on the rate of change in the temperature or process value. Too much derivative (rate) will make the system
sluggish. Rate action is active only when the process value is within twice the proportional value from the set point.
View or change the Output 1 derivative or rate with Derivative 1 [dE1`] or Rate 1 [rA1`] (PID 1 Menu).
Derivative appears if Units Type [Unit] (Global Menu) is set to [``S1]. Rate appears if [Unit] is set to [``US].
ALPHA OMEGA INSTRUMENTS CORP. Instruction Manual
Series 800/850 Thermoelectric Cooler Controller Page 50
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