Honeywell UDC3200 series, Руководство по эксплуатации продукта

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Configuration
Function Prompt Selections or
Parameter
Lower Display Range of Setting
Upper Display
Definition
FFWDMu
(Standard feature on
controllers with two
analog inputs)
FEEDFORWARD MULTIPLIER —Feedforward uses
Input A, following a Ratio and Bias calculation as a
value multiplied directly with the PID computed
output value and sent, as an output value, to the final
control element.
This algorithm will only function in automatic mode
and cannot be used for Three Position Step Control
applications.
The following formula applies:
Controller Output = PID Output x (Input A x Ratio A + Bias A ) / Input A Range
SUMMER
(See Note 2)
SUMMER WITH RATIO AND BIAS —The following
formula applies:
Alg1 = (Input A x Ratio A + Bias A) + (Input B x Ratio B + Bias B) + (Input C x
Ratio C + Bias C) + Alg1Bias
HI SEL
(See Note 2)
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:
Alg1 = higher of (Input A x Ratio A + Bias A) or (Input B x Ratio B + Bias B)
LO SEL
(See Note 2)
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:
Alg1 = lower of (Input A x Ratio A + Bias A) or (Input B x Ratio B + Bias B)
√
MuDIV
(See Note 1)
MULTIPLIER DIVIDER WITH SQUARE ROOT —
The following formula applies:
Alg1 = K * Sq.Rt. {(Input A x Ratio A + Bias A) x (Input C x Ratio C + Bias C) / (Input B * Ratio B + Bias
B)}
x (Calc Hi – Calc Lo) + Alg1Bias
See Figure 3-1 at the end of this section for an example of Mass Flow
Compensation using the Multiplier/Divider Algorithm.
√
MULT
(See Note 1)
MULTIPLIER WITH SQUARE ROOT —The following
formula applies:
Alg1 =K x Sq.Rt.{(Input A x Ratio A + Bias A) x (Input B x Ratio B + Bias B) x (Input C x Ratio C + Bias
C)}
x (Calc Hi – Calc Lo) + Alg1Bias
MuDIV
(See Note 1)
MULTIPLIER DIVIDER— The following formula
applies:
Alg1 = K x [{(Input A x Ratio A + Bias A) x (Input C x Ratio C + Bias C)} / (Input B x Ratio B + Bias B)]
x (Calc Hi – Calc Lo) + Alg1Bias
54 UDC3200 Universal Digital Controller Product Manual 12/04