Sterlco M2B - Derivative; Anti-Reset Windup; Direct;Reverse Action

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Derivative:
Referred to as “D” or RATE.
Expressed as derivative time in seconds. The controller measures the rate
of process increase or decrease and moves the proportional band to
minimize overshoot. The change in the output is directly proportional to the
rate of change in the process value.
Temp
Anti-Reset Windup:
This function inhibits the integral action until the process variable is within
the proportional band, thus reducing overshoot on start-up.
Direct/Reverse
Action:
Direct action is used for cooling applications. The output of the controller
increases with respect to an increase in the process value.
Reverse action is used for heating applications. The output of the controller
decreases with respect to an increase in the process value.
Output
TIME
P. B.
S.P.
P. B.
P. V.
TIME
100%
0%
P. B.
S.P.
P. V.
(COOL)
(HEAT)