Response Electronics CL6011B Specifikace stáhnout pdf (Strana 292)

Glossary

Original Ć June 1990CE4.2:CL6211

Controller A device that operates automatically to regulate a controlled variable.

Control Loop An arrangement of mechanical and electronic components for process

control. A product flows through one or more mechanical components

of the loop. The electronic components of the loop continuously

measure one or more aspects of the product flow, then alter those

aspects as necessary to achieve a desired process condition. A simple

control loop measures only one variable. More sophisticated control

loops measure many variables and maintain specified relationships

between those variables.

Control Algorithm

A mathematical representation of a control action to be performed.

Control Sequence

A type of primary control algorithm which provides basic functions such

as alarming, data communication, tracking, and error signal calculation,

but does not provide any form of PID control action. This allows the user

to create a customized control algorithm transfer function using FST

instructions.

CPU Acronym: Central Processing Unit.

CRC Acronym: Cyclic Redundancy Check

CRT Acronym: Cathode Ray Tube.

Current to Pressure Transducer (I/P)

An electronic component or device that converts a milliamp DC signal to

a proportional pneumatic pressure output signal.

Cyclic Redundancy Check (CRC)

A method of error detection in data transmission and data storage. The

check evaluates both the number of ones and zeroes in a block (parity)

and the position of the values in the block.

D Abbreviation: Derivative Control Action (Rate)

D/A Acronym: Digital to Analog, or Digital to Analog Converter

DAC Acronym: Digital to Analog Converter

Damping How an output settles to a steady state after a change in the measured

signal. When the response to an output change is as fast as possible

without overshoot, the response is critically damped. If the response is

slower than critical it is overdamped, and if an overshoot occurs the

response is underdamped.

Con - Dam

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Response Electronics CL6011B Specifikace Strana 292