Honeywell Series A - Figure 42 Functional Schematic for Control Selector Function Block

10. Appendix A
10.2. Standard Function Blocks
394 Experion PKS Series A Fieldbus Interface Module User's Guide R400
Honeywell July 2010
CS
OUT
Output
OUT_HI_LIM
OUT_LO_LIM
OUT
Mode
SEL_3
BKCAL_IN
BKCAL_SEL_1
BKCAL_SEL_2
Selection
SEL_TYPE
Back Calc
SEL_1
SEL_2
BKCAL_IN
SEL_3
SEL_1
SEL_2
BKCAL_SEL_1
BKCAL_SEL_2
BKCAL_SEL_3
BKCAL_SEL_3
Figure 42 Functional schematic for Control Selector function block.
Description
The Control Selector function block accepts input from up
to three control signals and selects one for output based on
the SEL_TYPE setting of High, Middle, or Low. A functional
schematic of the block is shown in the previous illustration
for reference.
Function Notes
All inputs must have the same scaling as OUT, since
any one can be selected for OUT.
Supports Out of Service (OOS), Initialization Manual
(IMan) Local Override (LO), Manual (Man), and
Automatic (Auto) modes.
If an input has a sub-status of Do Not Select, it will not
be selected.
Three separate back calculation outputs
(BKCAL_SEL_1, 2, 3) are available - one for each