Yokogawa JUXTA VJXS - Manual (Page 5)

5 IM 77J01X11-01E 2nd Edition Nov 30,2005-00
6.9 VJXS-J Linearizer (Optionally-set Line-segment
Function)
This computing unit gives an optional relationship between the input
(X) and output (output-1 = Y1, ouput-2 = Y2) signals using an option-
ally-set line-segment function. The line-segment function has 21
breakpoints, which each gives an input-output relationship as a per-
centage (%).
Set the number of line segments by 1 to 20.
Set the input (X) at % value in H01:CONST to H21:CONST, and the
output (Y) at % value in H22:CONST to H42:CONST.
● Setting condition of breakpoints:
For input:
−
6.0 Ϲ X
0
(H01) to X
20
(H21) Ϲ 106.0%; with 4 significant
digits, minimum unit is 0.01%
X
0
<X
1
<X
2
< ····· <X
20
For output: − 6.0 Ϲ Y
0
(H22) to Y
20
(H42) Ϲ 106.0%; with 4 significant
digits, minimum unit is 0.01%
When input
Ϲ X
0
(H01), Y
0
(H22) is output.
When input м final set value, the final set value of output is output.
Any number of line segments (1 to 20) can be set in H43.
The number of line segments 1 to 20 corresponds 100 to 2000%.
● Computation accuracy:
±
0.1% (However, when line-segment gain is 1 or less.)
6.10 VJXS-K Ratio Setter
This computing unit sets the ratio by the following expression.
Y1 = Y2 = K1 · (X+A1)+A2
where Y1:
Output-1 signal (%)
Y2: Output-2 signal (%)
X: Input signal (%)
K1: Ratio (no unit)
A1, A2: Bias (%)
Set the ratio (K1) in H01:CONST, and the bias (A1) at % value in
H02:CONST, and the bias (A2) at % value in H03:CONST.
● Setting range of ratio:
−
320 to 320 with 4 significant digits; minimum unit is 0.00001.
● Setting range of bias:
−
32000 to 32000% with 4 significant digits; minimum unit is
0.001%.
● Computation accuracy:
±
0.1% (However, when the ratio is 1 or less.)
NOTE
Decide ratio or bias so as not to exceed ± 3.4 ϫ 10 38 % during
computation. Ratio, bias and computation results are 4
significant digits.