Siemens 125-1957 owner manual Glossary, Algorithm, Centralized control, Control loop

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Glossary

Overview

The glossary contains terms and acronyms that are used in this manual. For definitions of point database descriptors, see Chapter 3, Point Database. For definitions of commonly used terms as well as acronyms and abbreviations associated with the APOGEE Automation System, see the Siemens Building Technologies Technical Glossary of Building Controls Terminology and Acronyms, (125-2185). This book is available from your local Siemens Building Technologies representative.

Al

Analog Input. Physical point which accepts a continuous variable signal.

algorithm

Mathematical formula used to calculate an output value using varying inputs.

AO

Analog Output. Physical point that generates a continuous variable signal.

centralized control

Type of control offered by a controller that is connected, by means of a Floor Level Network (FLN), with an APOGEE field panel.

control loop

Proportional Integral Derivative (PlD) algorithm that is used to control an output based on a setpoint and an input reading from a sensor.

DDC

Direct Digital Control.

Dl

Digital Input. Physical output point that accepts a two-state signal (that is, ON/OFF, OPEN/CLOSED, YES/NO, etc.).

Siemens Building Technologies, Inc.

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Contents 125-1957 Rev. CA, July Apogee Unit Vent Controller ⎯Page Service Statement Page Table of Contents Point Database Troubleshooting Table of Contents Manual Organization How To Use This ManualDatamate Software Manual SymbolsNotation Symbol Meaning Manual ConventionsGetting Help Where To Send CommentsStandard Applications Product OverviewIntroduction Ordering NotesAnalog Hardware InputsDigital Analog 0 to Power WiringCommunication Wiring Hardware OutputsTemperature Sensors Controller LED IndicatorsRoom Temperature Sensor Valve Actuators Mixed Air/Discharge Air Temperature SensorActuators Damper ActuatorsBasic Operation Control Temperature SetpointsDay/Night Mode ApplicationsHeating and Cooling Switchover Valve ConfigurationControl Loops Fan Operation Morning Warm-up/Cool-downON/OFF Coil Valve Control Electric HeatBasic Operation Application 2281 Control Drawing Application 2281 Control Drawing Application 2281 Control Drawing Application 2283 Control Drawing Application 2283 Control Drawing Application 2283 Control Drawing Application 2284 Control Drawing Application 2284 Heating and DX Cooling, Ashrae Cycles IApplication 2284 Heating and DX Cooling, Ashrae Cycles I Application 2286 Control Drawing Application 2286 Heating and DX Cooling, Ashrae CycleApplication 2286 Heating and DX Cooling, Ashrae Cycle Overview Application 2287 Heating and Cooling Nesbitt Cycle WApplication 2287 Heating and Cooling Nesbitt Cycle W Application 2299 Slave Mode Descriptor Address Application Description Point DatabaseRM Stpt Dial Wall SwitchRM Stpt MIN RM Stpt MAXFree CLG Ovrd TimeNGT Ovrd AUX.NOAUXAOV2 Start AOV1SPANAOV1START AOV2 SpanFAN NGT CLG ModeEheat Ehea TCLG D Gain CLG OutputOA Dmpr POS CLG P GainOA Loopout Switch LimitSwitch Time MA Loopout Morn Dband Switch Dband Error Status NGT DbandBasic Service Information TroubleshootingOverview Controller LEDs Ordering Replacement PartsPreventive Maintenance Safety FeaturesControl loop GlossaryAlgorithm Centralized controlIntercept English unitsEquipment controller Field panelSl units Override switchSlave mode On textUnbundle FLN IndexBST LED DDCTX LED RTS