Micromod Micro-DCI: 53SL6000 Single Loop Controller Manual de usuario descargar pdf (Pagina 112)

Additive

Feed

Forward

(FF)

This analog input signal is

added to the PID result to

form the control scheme out-

put value when auto opera-

tion is active.

Analog

Back-up

Control

A control strategy whereby

the controller acts as an auto-

matic back-up device in the

event a host computor con-

trolling the process fails. This

control strategy is imple-

mented with the factory de-

fault settings, by selecting the

SnGL prompt for the ProG-

cS-SchM parameter, and with

path connections used to

drive the final element output

selector.

Analog

Input (AI)

An input that accepts a 0-20

mA or a 4-20 mA signal. The

53SL6000 controller has two

standard analog inputs and

can accept two optional ana-

log inputs via the universal

analog input module.

Analog

Input

Register

(Ai)

Analog input registers 1-4 re-

ceive their hardware input

analog values after signal

conditioning has been applied

to the analog inputs 1-4.

(Hardware input to analog in-

puts 3 and 4 requires the op-

tional universal analog input

module.) Constant values

can be entered into all of the

analog registers 1-8; how-

ever, if the register has an ac-

tive hardware input, the

constant value will be over-

written.

Analog

Output (AO)

A standard 0-20 mA or 4-20

mA analog signal is trans-

mitted by the controller

through analog output 1. It is

defined as a percent of output

value (percent of final control

element excursion from mini-

mum to maximum).

Auto/Manual

Selector

A control strategy whereby

the controller acts as a signal

pass-through device when in

auto, with capabilities to

manually provide a control

output if necessary. This

control strategy is imple-

mented in the 53SL6000 con-

troller with the factory default

settings and by selecting the

in.Ld prompt for the ProG-cS-

SchM parameter.

Bar

or

Vertical

Bar

An LED ladder used to dis-

play percent. The 53SL6000

controller has two vertical

bars, each containing 40

LEDs: red, which is used pri-

marily to display the process

variable; and green, which is

used primarily to display the

setpoint.

Characterizer

A 53SL6000 functional unit

that provides signal value

modification via any one of

four operating modes: third

order polynomial, twelve seg-

ment linear, setpoint pro-

grammer, and digital-to-

analog converter.

Controller

Refers to the 53SL6000 con-

trol unit described in this

manual. Primarily, it is a de-

vice used to maintain process

quiescence at a predeter-

mined setpoint level.

Control

Scheme

The control scheme is the

fundamental functionality

needed to calculate and pro-

duce the necessary output

control signal. There are five

control schemes provided in

the 53SL6000 controller that

can be used as the basis for

many control strategies.

Each control scheme applies

to a unique area of process

control:

SnGL - for control strategies

Appendix A: Glossary

Appendix A. Glossary 53SL6000 Instruction Manual

A-1

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