Micromod Micro-DCI: 53SL6000 Single Loop Controller Uživatelský manuál stáhnout pdf (Strana 113)

requiring standard single loop

functionality.

cASc - for control strategies

requiring cascade functional-

ity.

L.LiM - for control strategies

requiring low limiting function-

ality.

h.LiM - for control strategies

requiring high limiting func-

tionality.

in.Ld - for control strategies

requiring indicator/loader

functionality.

Control

Strategy

A 53SL6000 controller mode

of operation specified with a

selected control scheme, pa-

rameters, and path connec-

tions designed to meet the

specific application needs of

a controlled process.

Derivative

Action (td)

Derivative action (td) is used

for quick attainment of stabil-

ity after sudden process dis-

turbances. It augments

proportional action by re-

sponding to the rate of

change of the process vari-

able. Derivative action is en-

tered as the time proportional

action is advanced, from 0.01

minutes (minimum action) to

8 minutes (maximum action);

0 is off.

Digital

Read-Out

(dro)

An LED field used to display

alphanumerics. The

53SL6000 controller has

three dros: red, which is a

four character field used pri-

marily for the process vari-

able value in engineering

units; green, which is a four

character field used primarily

for the setpoint value in engi-

neering units; and yellow,

which is a three character

field used primarily for the

output value expressed as a

percentage of the final control

element excursion or operat-

ing band.

Digital-

to-

Analog

Converter

Mode

An operating mode of the

characterizer whereby values

are entered into chr parame-

ter constants K1 and K2,

which are used as multipliers

for the digital inputs at chr.b

and chr.c respectively. The

product of (chr.b)(K1) is

added to the characterizer

base value (not user ac-

cessable) and the product of

(chr.c)(K2) is subtracted from

the characterizer base value.

It is the interaction of these

two inputs, chr.b and chr.c on

the base that causes the ana-

log output

Discrete

Input (DI)

Discrete inputs 1-4 are input

enables that can also be used

as event indicators to gener-

ate logic levels based on the

applied input voltage. (Dis-

crete inputs 3 and 4 require

the 2DI/2DO option module.)

The remainder of the discrete

inputs 5-8 do not receive in-

puts from external sources.

Discrete

Output (DO)

Discrete outputs 1-4 convert

logic levels to hardware con-

tact conditions. (Discrete

outputs 3 and 4 require the

optional 2DI/2DO module.)

The remainder of the discrete

outputs 5-8 do not provide ex-

ternal outputs from the con-

troller.

Display

Panel

The 53SL6000 controller

functionality for the faceplate

push buttons and LEDs.

Dual

Indicator with

Re-Transmitted

Process

Variable

A control strategy whereby

two analog inputs can be dis-

played and either one can be

selected as the re-transmitted

output. This control strategy

is implemented with the fac-

tory default settings and by

selecting the in.Ld prompt for

ProG-cS-SchM parameter.

Easy-Tune



The 53SL6000 controller

automatic tuning algorithm

that approximates a first or-

der time lag with gain and

dead-time to determine the

53SL6000 Instruction Manual Appendix A. Glossary

A-2

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