# Single Loop Control (AIP01)

## Prerequisites

This lesson is designed for participants familiar with measurement fundamentals. An understanding of algebra is also recommended.

## Description

This lesson presents the principles of single-loop control and the applications of feedback control in the industrial environment. Also introduced are various control modes including on/off, proportional, integral, and derivative control.

## Objectives

Define and site industrial control. Define process variable. Compare manual and automatic process control. Adjust the set point on a pictorial representation of an industrial controller. Identify the controlled, measured, and manipulated variables of a heat exchanger system. Define deviation. Identify controls. Identify the action of the final control element of various control systems. Identify the dead zone or dead band on an on/off control response curve. Compare and contrast the action of a final control element in an on/off control. System with a proportional control process. Identify reverse- or direct-acting control with an example of measurement and subsequent output response. Define proportional control in relation to response error. Determine the setting of the controller??s proportional band and gain on a pictorial representation of process control action. Identify offset on an example of proportional only control. Define integral control in relation to error signal. Identify minutes per repeat and repeats per minute with an example of the units used in integral control. Define reset wind-up on a process response curve for an integral controller. Identify the effects of reset wind up on the elements of process control on a heat exchange system. Define derivative process control in relation to error signal.

## Content

This lesson presents the principles of single-loop control and the
applications of feedback control in the industrial environment. Also
introduced are various control modes including on/off, proportional,
integral, and derivative control.

• Single-Loop Control

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