United Security Products AVD-45c Manuál stáhnout pdf (Strana 102)

88 UDC 6300 Process Controller Product Manual 1/03

4.6 Algorithm Data Set Up Group, Continued

Table 4-5 Algorithm Group Definitions, continued

Lower Display

Prompt

Upper Display

Range of Setting

or Selection

Parameter

Definition

IN ALG 1

continued

INPUT ALGORITHM 1 (continued)

SUMMER

SUMMER WITH RATIO AND BIAS - The following

formula applies:

PV (or SP) = (Input A x RatioA + Bias A) + (Input B x RatioB + BiasB)+ (Input C x RatioC + BiasC)

HI SELECT

INPUT HIGH SELECT WITH RATIO AND BIAS -

This selection specifies the PV or SP as the higher

of Input 1 or Input 2. The following formula applies:

PV (or SP) = higher of (Input A x RatioA + BiasA) or (Input B x RatioB + BiasB)

LO SELECT

INPUT LOW SELECT WITH RATIO AND BIAS -

This selection specifies the PV or SP as the lower of

Input 1 or Input 2. The following formula applies:

PV (or SP) =lower of (Input A x RatioA + BiasA) or (Input B x RatioB + BiasB)

√ MUL DIV (note 1)

MULTIPLIER DIVIDER WITH SQUARE ROOT -

The following formula applies:

PV (or RSP) = K x

(Input B x RatioB + BiasB)

(Input A x RatioA + BiasA) x (Input C x RatioC + BiasC)

X (Calc – Calc )HI

See Figure 4-1 at the end of this section for an example of Mass Flow

Compensation using Multiplier/Divider Algorithm

√ MULTIPLY (note 1)

MULTIPLIER WITH SQUARE ROOT -

The following formula applies:

PV (or RSP) = K x

(Input A x RatioA + BiasA) x (Input C x Ratio C + BiasC)(Input B x Ratio + Bias )BBx

X (Calc – Calc )HI LO

MULT DIV

MULTIPLIER DIVIDER - The following formula

applies:

PV (or RSP) = K x

(Input B x Ratio + Bias )B

(Input A x Ratio + Bias ) x (Input C x Ratio + Bias )AA CC

X (Calc – Calc )HI

MULTIPLY

MULTIPLIER - The following formula applies:

PV (or RSP) = K x (Input A x Ratio + Bias ) x (Input C x Ratio + Bias ) AA CC

(Input B x Ratio + Bias )BBx

X (Calc – Calc )HI LO

Where: K = 0.001 to 1000 (configurable)

Calc Hi and Calc Lo are configurable over a range of –999 to 9999

Note 1. If the calculated value of the quantity under the square root sign decreases to a value less

than 0.010, the calculation will become linear as the calculated value decreases below 0.010.

Table 4-5 continued on next page

1 2 ... 97 98 99 100 101 102 103 104 105 106 107 ... 301 302

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