61
SC100/200 Series Function Block Application Manual EM-6460-C
Gains and biases are calculated by the following equations based on the equation (3).
G
1
(Y
11
– Y
10
)
K
1
= ––––––––––––
...............................................................................................Equation (4)
Y
01
– Y
00
G
2
(Y
21
– Y
20
)
K
2
= ––––––––––––
...............................................................................................Equation (5)
Y
01
– Y
00
G
3
(Y
31
– Y
30
)
K
3
= ––––––––––––
...............................................................................................Equation (6)
Y
01
– Y
00
G
1
Y
10
+ G
2
Y
20
+ G
3
Y
30
– Y
00
+ B
0
A
0
= –––––––––––––––––––––––––––
..................................................................Equation (7)
Y
01
– Y
00
■
NORMALIZATION PROCEDURE
1) Formulate an engineering unit function equation.
Transform the user’s own process equation into one with each term corresponding the normalization equation.
2) Determine 0% and 100% engineering unit values for each of inputs and outputs.
3) Formulate a normalization equation.
Calculate gains K
0
, K
1
, K
2
and biases A
0
, A
1
and A
2
. Formulate the normalization equation using these parameters.
4) Recalculation for confirmation
Enter a simulated value (e.g. 0.5 for 50%) into the normalization equation and calculate the output. Then enter an equiva-
lent engineering unit value into the engineering unit function equation and calculate its output. Gains and biases are
proved correct if these two results are consistent.
