Fuji Electric FRENIC-Ace series - Page 428

5.3 Description of Function Codes
5-258
Block
selection
(U01 etc.)
Function block
Description
Function 1
(U04 etc.)
Function 2
(U05 etc.)
2007 Inverting adder
Inverting addition function with single input (input 1).
This function subtracts the input 1 to the value specified
with the 1st function code, inverts the result. And
furthermore, the function adds the result to the value
specified with the 2nd function code and outputs the
result.
Subtraction
value
(former)
Addition
value
(latter)
2008 Variable limiter
Variable limit function of single input (input 1).
Input 1 provides upper limit value and input 2 provides
lower limit value.
Step
number
Not
required
2009 Linear function
Linear function of single input (input 1).
This function receives single input (input 1), calculates
pre-defined first-order polynomial, and outputs the result.
The 1st and 2nd function codes provide the coefficients of
the polynomial.
The polynomial is represented by the following formula.
BA
KKy +χ×=
The output is limited within the range between -9990 and
9990 by the internal limiter.
Factor KA
-9990.0 to
+9990.0
Factor KB
-9990.0 to
+9990.0
2051 Comparator 1 Comparison function with hysteresis.
This function compares the differential value between
input 1 and input 2 with the threshold value specified with
the 1st function code. The 2nd function code provides
hysteresis width.
If the differential value is (threshold value + hysteresis
width) or bigger, this function outputs logical “1: True”. On
the other hand, if the the differential value is (threshold
value - hysteresis width) or smaller, this function outputs
logical “0: False”.
Threshold
value
Hysteresis
width
2052 Comparator 2 Comparison function with hysteresis.
This function compares the differential value between
input 1 and input 2 with the threshold value specified with
the 1st function code. The 2nd function code provides
hysteresis width.
If the differential value is bigger than (threshold value +
hysteresis width), this function outputs logical “1: True”.
On the other hand If the value is smaller than (threshold
value - hysteresis width), the function outputs logical “0:
False”.
Threshold
value
Hysteresis
width
2053 Comparator 3 Comparison function with hysteresis.
This function compares the absolute differential value
between input 1 and input 2 with the threshold value
specified with the 1st function code. The 2nd function
code provides hysteresis width.
This function works like as comparator 1
Threshold
value
Hysteresis
width
2054 Comparator 4 Comparison function with hysteresis.
This function compares the absolute differential value
between input 1 and input 2 with the threshold value
specified with the 1st function code. The 2nd function
code provides hysteresis width.
This function works like as comparator 2
Threshold
value
Hysteresis
width