Process Controls
CONTROLLERS
Summary
The important information in this chapter is summarized below.
Controllers Summary
The setpoint indicator displays the desired value for the controller.
The dial adjustment used to vary the setpoint value is the setpoint
adjustment.
The deviation indicator displays the difference in percentages between the
setpoint value and the actual controlled variable value.
Percentage display for the output signal is indicated on the output meter.
The manual-automatic transfer switch is a five position switch that alters
the mode of operation.
Located in the center of the transfer switch, the manual output adjustment
knob varies the controller output signal in the manual mode of operation.
A self-balancing control station’s non-operating mode output signal
follows the operating mode output signal.
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