Equations; Configuration Hints - ABB JDF300 Operating Instruction

J D F 3 0 0 | F I E L D I N D I C ATO R | O I/ J D F 3 0 0 - E N R E V. B
Selection Processing
If OP_SELECT is non-zero, the OP_SELECT value shall determine the selected input, regardless of the SELECT_TYPE selection. Set
SELECTED to the number of the input used.
If SELECT_TYPE is First Good, transfer the value of the first remaining input to the output of the block. Set SELECTED to the
number of the input used.
If SELECT_TYPE is Minimum, sort the remaining inputs by value. Transfer the lowest value to the output of the block. Set SELECTED
to the number of the input with the lowest value.
If SELECT_TYPE is Maximum, sort the remaining inputs by value. Transfer the highest value to the output of the block. Set
SELECTED to the number of the input with the highest value.
If SELECT_TYPE is Middle, sort the remaining inputs by value. If there are 3 or 4 values, discard the highest and lowest value. If two
values are left, compute their average. Transfer the value to the output
of the block. Set SELECTED to zero if an average was used, else set SELECTED to the number of the input with the middle value.
If SELECT_TYPE is Average compute the average of the remaining inputs and transfer the value to the output of the block. Set
SELECTED to the number of inputs used in the average.
Limit Processing
The computations to determine high and low limit conditions for the output can be complex. They should be done to the best of
the designer's ability. The limits of OUT should be able to tell a PID to stop integrating if the measurement cannot move.

Equations

With the SELECT_TYPE it is possible select the following algorithms:
Algorithm Type
First Good
Minimum
Maximum
Middle
Average

Configuration hints

The minimum configuration for having the IS working and/or moving out from the OOS needs at least the following settings:
• Set the SELECT_TYPE with a valid value. It must be different from 0 and in the range 1 – 5
Description
Select the first available Input with Good Status
Select the minimum value of the Inputs
Select the maximum value of the Inputs
Calculate the middle of three inputs or the average of the two middle inputs if four inputs are defined
Calculate the average value of the inputs
Function
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