Honeywell W7750A specifications Relative Temperature, Air Flow, CO2 Concentration, Enthalpy

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EXCEL 10 W7750A,B,C CONSTANT VOLUME AHU CONTROLLER

DiffEconEnTemp 21

DisMinHtTime 25

DisMinClTime 25

DlcBumpTemp 21

EconIAQPos 21

EconMinPos 21

EconMtrSpd 25

EconPos 23

EconMode 25

FanFailTime 25

FanMode 25

FanOnHtMode 25

FanRunOnCool 25

FanRunOnHeat 25

FilterPress 23

FltrPressStPt 21

Free1Stat 23

Free2Stat 23

GainCoolDer 21

GainCoolInt 21

GainCoolProp 21

GainHeatDer 21

GainHeatInt 21

GainHeatProp 21

HeatCycHr 25

HeatMtrSpd 25

HeatOccSpt 26

HeatPos 23

HeatStbySpt 26

HeatStgsOn 23

HeatUnoccSpt 26

IAQSetpt 21

IaqUseHeat 25

MaxClRamp 21

MinClRamp 21

MaxHtRamp 21

MinHtRamp 21

MonitorSens 23

MonitorSw 23

OaEconEnTemp 21

OaEnth 23

OaEnthCalc 23

OaEnthEn 21

OaHum 23

OaTemp 23

OaTempClLkOut 21

OaTempHtLkOut 21

OaTempMaxClRp 21

OaTempMinClRp 21

OaTempMaxHtRp 21

OaTempMinHtRp 21

OccStatOut 23

OvrdPriority 25

OvrdType 25

PwmFullScale 21

PwmPeriod 21

PwmZeroScale 21

RaEnth 23

RaEnthCalc 23

RaHum 23

RaTemp 23

RmTempActSpt 23

RmTempCal 25

RmtStptPot 20

SaFan 23

SaFanStatus 23

SetPtKnob 25

ShutDown 23

SmkCtlMode 25

StatFreezeStat 23

StatusAlmTyp 23

StatusEconEn 23

StatusEconOut 23

StatusFilter 23

StatusIaqOvr 23

StatusManOcc 23

StatusMode 23

StatusOcc 23

StatusOcySen 23

StatusOvrd 23

StatusSched 23

StatusSmoke 23

StatusWndw 23

StptKnobHiLim 21

StptKnobLowLim 21

TimeClckOcc 23

UseRaTempCtl 25

UseWallModStpt 25

WSHPEnable 23

Failure Detect User Addresses and Table Number

User Address Table Number

DestBypass 22

DestDlcShed 22

DestEconEnable 26

DestFree1 22

DestFree2 22

DestHvacMode 26

DestIaqOvrd 28

DestOaEnth 28

DestOaHum 26

DestOaTemp 26

DestOccSensor 26

DestRmTemp 26

DestSchedOcc 22

DestSptOffset 26

DestTimeClk 22

DestWndw 26

DestWSHPEnable 22

Table 19 lists the applicable Engineering Units for the analog points found in the W7750.

Table 19. Engineering Units For Analog Points.


	English Units (Inch-Pound)		Standard International Units (SI)
Measured Item
Measured Item	Description	Abbreviation	Description	Abbreviation

Temperature	Degrees Fahrenheit	F	Degrees Celsius	C

Relative Temperature	Delta Degrees Fahrenheit	DDF	Degrees Kelvin	K

Relative Humidity	Percent	%	Percent	%

Air Flow	Cubic Feet per Minute	CFM	Meters Cubed per Hour	m3h

CO2 Concentration	Parts Per Million	PPM	Parts Per Million	PPM

Enthalpy	British Thermal Units per Pound of Air	btu/lb	kiloJoules/kilogram	kj/kg

Differential Pressure	Inches of Water Column	inw	kiloPascal	kPa

65	74-2958— 1

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Contents Excel 72-2958 General Considerations W7750 ControllersAppendices 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 W7750ASpecial Note for the W7750B,C Unit Performance SpecificationsPower Memory Capacity Specified Space Temperature Sensing RangeCPU Excel 10 W7750C Constant Volume AHU Controller Jack Lonmark Functional Profile DIN rail adaptersAnalog Inputs Inputs/OutputsDigital Outputs Digital InputsTriac Outputs on the W7750B,C Models only 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 DeviceVA Information Obtained from Power WiringPower Budget Calculation Example 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 optionsSensor with Bypass/LED and Lonworks Jack T7770 and T7560 Wall ModulesHoneywell Logo T7770D1018 Echelon Based Components and Parts Accessories SensorsAccessories Troubleshooting Configure ControllersTroubleshooting Excel 10 Controllers and Wall Modules CablingResistance Value ohms AlarmsExcel 10 Alarms 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 DLCDirty Filter Monitor Temperature Control OperationsSee for a diagram of a typical W7750 Unit 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 SixtyfiftyTrue PPM SiinvalidFalse 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 FHvactest Hvacauto HvacnulHvacmrngwrmup 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 Relative Humidity Percentage Voltage/Current SensorsSensor Voltage Versus Humidity Humidity Percentage 113 74-2958 Sensor Current Versus Enthalpy volts Enthalpy mAMAmAmAmA AmA mA mA T7242 or equivalent74-2958 114 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