Honeywell HC900 Reference Guide

Function Blocks
HSEL High Selector Function Block
Revision 11 HC900 Hybrid Control Designer Function Block Reference Guide 177
2/07
HSEL High Selector Function Block
Description
The HSEL label stands for High Selector.
This block is part of the
Signal Selectors category.
Function
Selects higher of two analog input values (X and Y) for output.
Indicates when Y is higher than X.
• If X > or = Y, then: OUT = X; YHI = OFF.
• If X < Y, then: OUT = Y; YHI = ON.
Input
X
= Analog value
Y = Analog value
Output
OUT
= Higher analog value
YHI = Digital signal. (ON when Y>X.)
Block properties
Double click on the function block to access the function block properties dialog box.

Honeywell HC900 Specifications

General

Series	HC900
Redundancy	Optional
Programming Language	Function Block Diagram, Ladder Logic, Structured Text
Inputs	Analog, Digital
Outputs	Analog, Digital, Relay
Display	Optional
Control	PID, Advanced Control
Power Supply	24V DC or 100-240V AC
Storage Temperature	-40°C to 85°C
Humidity	5% to 95% non-condensing
Communication Protocols	Modbus, Ethernet