Configuration
88
UDC3500 Universal Digital Controller Product Manual
3/07
Function Prompt
Lower Display
Selections or
Range of Setting
Upper Display
Parameter
Definition
ALG1BIAS
-999 to 9999 floating (in
engineering units)
INPUT ALGORITHM 1 BIAS
—Does not apply to
selections: FFWRD, FFWDMU, HISEL or LOSEL.
ATTENTION
• All Input Algorithms operate in engineering units except Feed-forward which operates in percent of
range units.
• For General Math functions, when Input C is disabled, the value of Input C used in the functions is
automatically set to 1.0.
INP ALG2
NONE
W AVG
F FWR2
FFWDM2
A-B/C
HI SEL
LO SEL
√
MuDIV
√
MULT
MuDIV
MULT
DEW PT
INPUT ALGORITHM 2
—The formulas for these
selections are the same as those for IN ALG 1 with
the following exceptions: Relative Humidity, all
Carbon Potential and Oxygen algorithms are not
available. Feedforward works only on Loop 2.
ATTENTION
Selection
A–B/C
algorithm is used in
place of IN ALG1
A+B+C
algorithm. The A-B/C
algorithm subtracts Input B with Ratio/Bias from
Input A with Ratio/Bias and divides the result by
Input C with Ratio/Bias using engineering units. This
selection is only available on Input Algorithm 2.
EXAMPLE:
PV or SP = K
(A–B)
C
(Calc Hi – Calc Lo)
MATH K2
0.001 to 1000 floating
WEIGHTED AVERAGE RATIO OR MASS FLOW
ORIFICE CONSTANT (K) FOR MATH
SELECTIONS
—Only applicable for algorithm
W AVG or General Math selections
⎟
MuDIV,
⎟
MULT,
MuDIV, or MULT.
CALC HI
–999. To 9999. Floating
(in engineering units)
CALCULATED VARIABLE HIGH SCALING
FACTOR FOR INPUT ALGORITHM 2
—Does not
apply to Feedforward algorithms. Range is used for
either PV or RSP, depending upon Algorithm
application.
CALC LO
–999. To 9999. Floating
(in engineering units)
CALCULATED VARIABLE LOW SCALING
FACTOR FOR INPUT ALGORITHM 2
—Does not
apply to Feedforward algorithms. Range is used for
either PV or RSP, depending upon Algorithm
application.
Summary of Contents for UDC3500
Page 16: ......
Page 459: ...3 07 UDC3500 Universal Digital Controller Product Manual 443 ...