Honeywell HC900 Reference Guide

Function Blocks
LPSW Loop Switch Function Block
Revision 11 HC900 Hybrid Control Designer Function Block Reference Guide 185
2/07
Example
HFigure 46 shows a Function Block Diagram using an LPSW function block
Function: Digital interface to initiate:
• Autotuning
• Change Control Action: Direct/Reverse Action
• Force Bumpless Transfer (rebalance the algorithm)
• Select Tuning Set #1
• Select Tuning Set #2
Figure 46 LPSW 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