Honeywell W7750A specifications Excel

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Excel 10

W7750A,B,C CONSTANT VOLUME AHU CONTROLLER

SYSTEM ENGINEERING
	Contents
Introduction	6
Description of Devices	6
Control Application	7
Control Provided	7
Products Covered	8
Organization of Manual	8
Applicable Literature	8
Product Names	9
Agency Listings	9
Abbreviations and Definitions	10
Construction	11
Controllers	11
PERFORMANCE SPECIFICATIONS	13
LONMARK® Functional Profile	17
Inputs/Outputs:	18
ANALOG INPUTS:	18
DIGITAL INPUTS:	19
TRIAC OUTPUTS ON THE (W7750B,C MODELS ONLY):	19
DIGITAL OUTPUTS:	19
Wall Modules	20
Duct Sensor	20
Configurations	22
General	22
Allowable Heating and Cooling Equipment Configurations	24
STAGED HEATING/COOLING CONTROL	24
MODULATING HEATING/COOLING CONTROL	24
HEAT PUMP CONTROL	24
ECONOMIZER CONTROL	25
PNEUMATIC ACTUATOR CONTROL	25
MIXED-OUTPUT-TYPE CONTROL	26
Occupancy Sensor	26
Window Open/Closed Digital Input	26
Wall Module Options	26
Dirty Filter Monitor	27
Indoor Air Quality (IAQ) Override	27
Smoke Control	27
Freeze Stat	27
Modes of Operation	27
Application Steps	29
Overview	29
Step 1. Plan the System	29
Step 2. Determine Other Bus Devices Required	29
Step 3. Lay Out Communications and Power Wiring	30
LONWORKS® Bus La yout	30
Power Wiring	32
POWER BUDGET CALCULATION EXAMPLE	32
LINE LOSS	33
Step 4. Prepare Wiring Diagrams	35

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Contents Excel Appendices General Considerations W7750 Controllers72-2958 74-2958 List of Figures74-2958 Setpoint ramping parameters with ramp rate calculationList of Tables Typical system overview Description of DevicesControl Provided Control ApplicationOrganization of Manual Products CoveredApplicable Literature Form No TitleAgency Listings Product NamesAbbreviations and Definitions Controllers ConstructionDI-1 W7750APower Performance SpecificationsSpecial Note for the W7750B,C Unit CPU Specified Space Temperature Sensing RangeMemory Capacity Excel 10 W7750C Constant Volume AHU Controller Jack Lonmark Functional Profile DIN rail adaptersAnalog Inputs Inputs/OutputsTriac Outputs on the W7750B,C Models only Digital InputsDigital Outputs Duct Sensor Wall ModulesT7770A1006 T7770CT7560A,B construction in in. mm General ConfigurationsConfiguration Options Summary For W7750A,B,C Controllers Staged HEATING/COOLING Control Allowable Heating and Cooling Equipment ConfigurationsHeat Pump Control Modulating HEATING/COOLING ControlPneumatic Actuator Control Economizer ControlWindow Open/Closed Digital Input Occupancy SensorWall Module Options MIXED-OUTPUT-TYPE ControlDirty Filter Monitor Modes of OperationIndoor Air Quality IAQ Override Smoke ControlDisabled OFF ModeNot AssignedPlan the System OverviewDetermine Other Bus Devices Required Step No DescriptionLonworks Bus Layout Lay Out Communications and Power WiringExcel VAV Cvahu Power Budget Calculation Example Power WiringDeviceVA Information Obtained from ML6161A/B Damper Actuator, 35 lb-in R8242A Contactor VA Ratings For Transformer Sizing Device DescriptionML7984B PWM Valve Actuator Line LossNema class 2 transformer voltage output limits Power wiring details for one Excel 10 per TransformerGeneral Considerations Prepare Wiring DiagramsW7750 Controllers Terminal Terminal Number Description Factory Default Digital OutputsConstant Volume AHU Controller ML6161 Floating Actuator COM CCW Load Controller Power Heat Wall Economizer Damper PWM Actuator Power Signal W7750C Constant Pneumatic transducer to W7750B,C Shown, see triangle note Lonworks Bus Termination ModuleBrown Orange Order Equipment Lonworks Bus termination wiring optionsHoneywell Logo T7770D1018 T7770 and T7560 Wall ModulesSensor with Bypass/LED and Lonworks Jack Accessories Accessories SensorsEchelon Based Components and Parts Troubleshooting Configure ControllersTroubleshooting Excel 10 Controllers and Wall Modules CablingExcel 10 Alarms AlarmsResistance Value ohms W7750 Controller Status LED Broadcasting the Service MessageSetting the Pid Parameters Appendix A. Using E-Vision to Commission a W7750 ControllerT7770C,D Wall Module Bypass Pushbutton and Override LED Sensor CalibrationAppendix B. Sequences of Operation Common Operations Heating Room Temperature Sensor RmTempEconomizer IAQ OptionRemote Setpoint RmtStptPot Bypass Mode StatusOvrd and StatusLedSetpoint Limits LoSetptLim and HiSetptLim BypassTimeOccupancy Mode and Manual Override Arbitration Continuous Unoccupied ModeNot Assigned Bypass OccupiedTime Clock OccTimeClock Recovery Ramping for Heat Pump SystemsSchedule Master SchedMaster Setpoint RampingSmoke Control Window Sensor StatusWndwFAN Operation Demand Limit Control DLCSee for a diagram of a typical W7750 Unit Temperature Control OperationsDirty Filter Monitor ONE Stage Staged Cooling ControlTWO Stages Three StagesSeries 60 Modulating Control Cascade Control of Modulating COOLING/HEATINGPulse Width Modulating PWM Control Outdoor AIR Lockout of HEATING/COOLINGIndoor AIR Quality IAQ Override Economizer ENABLE/DISABLE ControlFreeze Stat Discharge AIR LOW Limit ControlControl Parameters Address Input Output Points AddressEnergy Management Points Address Status Points AddressMappable User Addresses and Table Number Air Flow Relative TemperatureCO2 Concentration EnthalpyPlaced in manual mode through a menu Application reset therefore, these points canValid states and the corresponding Enumerated values are shownInput/Output Points DefaultNvName Field Name CommentsOccsensor Shcedmasterin NciIoSelect DigitalIn1255 NciIoSelect DigitalIn2 Occsensor UnuseddiCOOLSTAGE2 COOLSTAGE1COOLSTAGE3 COOLSTAGE4Siinvalid SixtyfiftyFalse PPM SiinvalidTrue Position when poor indoor air quality is detected EconEnSw NvoIO EconEnableInStatusDI3 NvoIO UbDigitalIn OccSensr NvoIONvName Default CommentsControl Parameters MaxClRamp NciAux1SetPt UbMaxClRampS0 Degrees F/Hr OdEnthalpyEnableMinClRamp NciAux1SetPt UbMinClRampS0 Degrees F/Hr MaxClRamp, OdTempMaxClRamp,PPM GainCoolProp NciAux2SetPt UbKpCoolS2 Degrees F Degrees C Discharge air temperature cascade control loopGain for the cooling control loop GainHeatProp NciAux2SetPt UbKpHeatS2 Degrees F Degrees CEnergy Management Points NviFree1 Value Refer to WSHPEnable.valueAuxiliary functions. nviFree1 controls the FREE1OUT Network variable input failsDestTimeClk NviTimeClk State NviTimeClk ValueRefer to nviTimeClk.value 255 SrcTimeClkCt NvoTimeClk ValueStatus Points Bit Offset = SensorFailAlrm Alarmbit1Bit Offset = FrostProtectAlrm Bit Offset = InvalidSetPtAlrmNodedisabled NoalarmSmokealarm UpdateallfieldsStartupwait DisabledmodeHeat CoolAir flow switch is configured StatusEconEn NvoData1 EconEnableNciAux1SetPts.ubOdEnthalpyEnableS2 StatusManOcc NvoData1 NetManOccAuxiliary heating stages are turned on HeatStgsOn NvoData1 HeatStagesOnCoolStgsOn NvoData1 CoolStagesOn For both heating or coolingNciConfig.SmokeControl Is 1, the algorithm controls as per the settings foundController mode is switched to Freezeprotect MonitorSw NvoData1 MonSwitchTempcontrolptfield BypasstimerfieldSpacetempfield DischargetempfieldUbinvalid SpaceTempError StatusError NvoError Errorbit0NvoError Errorbit0 Bit Offset = Temperature SetPtError NvoError Errorbit0Bit Offset = RtnEnthalpyError NvoError Errorbit1 NvoError Errorbit1Are disabled as if the sensor was not configured Bit Offset = SpaceCO2Error NvoError Errorbit1Bit Offset = NvDlcShedError NvoError Errorbit2 Bit Offset = NvWindowError NvoError Errorbit2Bit Offset = NvTodEventError NvoError Errorbit3 Bit Offset = NvByPassError NvoError Errorbit3Cfgexternal CfglocalCfgnul Calibration PointsConfiguration Parameters False True DisMinClTime NciConfig DisableCoolMinTime DisMinHtTime NciConfig DisableHeatMinTimeCascCntrl NciConfig CascadeControl UseRaTempCtl NciConfigOffset Absolutemiddle Last NETNone Normal BypassonlyLonmark /Open System Points Hvacheat HvacautoHvacmrngwrmup Hvacprecool Hvaccool Hvacnightpurge Hvacnul HvacoffDestRmTemp NviSpaceTemp Degrees F 74-2958 100SNVTtempp 14 to SrcRmTemp NvoSpaceTemp Degrees FHvacmrngwrmup Hvacauto HvacnulHvactest Alarmnotifydisabled 103 NvoStatus Inalarm NvoStatus Electricalfault255 Not configured 74-2958 NvoStatus UnabletomeasureSwon Corresponding economizer function is not enabled because On other nodes. If the economizer function is configured bySrcEconEnable NvoEcon State SrcEconEnCt NvoEcon ValueDirect Access And Special Points OFF Data Share Points =using One-to-Many and not using points Approximate Memory Size Estimating Procedure= including mapped points and others for Mapped points = number of mapped points per ExcelResistance Sensors Sensor Resistance Versus Temperature Resistance OhmsSensor Type Sensor UseDirect Setpoint Temperature Offset Setpoint TemperatureT7770B,C 10K ohm setpoint potentiometer Relative Above and Below Setpoint Resistance OhmsSensor Voltage Versus Humidity Humidity Percentage Voltage/Current SensorsSensor Voltage Versus Humidity Relative Humidity Percentage 113 74-2958 Sensor Current Versus Enthalpy volts Enthalpy mA74-2958 114 T7242 or equivalentMAmAmAmA AmA mA mA Sensor Voltage Versus Input Voltage To A/D Voltage to A/D Pressure Inw kPa Sensor Voltage Vdc Sensor Voltage Vdc Versus Pressure InwInw 50.0.13