Honeywell HC900 Reference Guide

Function Blocks
4AND Function Block
76 HC900 Hybrid Control Designer Function Block Reference Guide Revision 11
2/07
Block properties
Double click on the function block to access the function block properties dialog box.
Input state
You can invert Input 1, 2, 3, 4, or all. If the input is inverted, an input line that is ON is seen as OFF (“N”
on Icon next to inverted input).
ATTENTION
Unused values must be set to 1 or inverted.
Example
HFigure 16 shows a Function Block Diagram configuration using a 4AND function block. The function
block is being used to monitor 3 input signals for an alarm condition. Note unused input is terminated.
Figure 16 4AND function block example

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