Microprocessor-Based/Ddc Fundamentals - Honeywell AUTOMATIC CONTROL SI Edition Engineering Manual

Microprocessor-Based/DDC Fundamentals

Introduction
Definitions
Background
Advantages
Controller Configuration
Types of Controllers
Controller Software
Controller Programming
ENGINEERING MANUAL OF AUTOMATIC CONTROL
ENGINEERING MANUAL OF AUTOMATIC CONTROL
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Computer Based Control ..................................................................... 134
Direct Digital Control ........................................................................... 134
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Lower Cost Per Function ..................................................................... 134
Application Flexibility ........................................................................... 134
Coordinated Multifunction Capability ................................................... 135
Precise and Accurate Control .............................................................. 135
Reliability ............................................................................................. 135
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Zone-Level Controllers ........................................................................ 136
System-Level Controller ...................................................................... 136
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Operating Software ............................................................................. 137
Application Software ............................................................................ 137
Direct Digital Control Software ........................................................ 137
Energy Management Software ....................................................... 138
Optimum Start ............................................................................ 138
Optimum Stop ............................................................................. 138
Night Cycle ................................................................................. 138
Night Purge ................................................................................. 139
Enthalpy ...................................................................................... 139
Load Reset ................................................................................. 139
Zero Energy Band ....................................................................... 141
Distributed Power Demand ......................................................... 142
Building Management Software ...................................................... 142
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General ................................................................................................ 142
Programming Categories .................................................................... 143
Configuration Programming ............................................................ 143
System Initialization Programming .................................................. 143
Data File Programming ................................................................... 143
Custom Control Programming ......................................................... 143
Analyze Control Application ........................................................ 144
Partition Into Control Loops ........................................................ 144
Determine Inputs and Outputs .................................................... 144
Design, Write, and Compile Program ......................................... 145
Debug, Install, Enter Data Files, and Test ................................... 145
MICROPROCESSOR-BASED/DDC FUNDAMENTALS
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CONTENTS