Honeywell W7750A StatusManOcc NvoData1 NetManOcc, Indicates that the space is bypass occupied for

Page 85

Table 23. Status Points. (Continued)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Value

Digital

 

E-Vision

 

 

Direct

Hardware

Manual

 

E-Vision Legend: (M) Monitor, (P) Parameter, (S) Schematic

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

User Address

NvName

Field Name

(Metric) or States plus Range

ofState

Stateor

Default

(M, P,S)

Share

Map

Access

Config.

Config.

Test

Comments

 

 

 

 

Engineering Units: English

 

 

 

 

 

 

 

 

 

 

 

 

StatusManOcc

nvoData1

NetManOcc

OC_OCCUPIED

0

 

OC_NUL

 

 

X

 

 

 

 

NetManOcc: NetManOcc reports the network manual occupancy state from

 

 

(nvoCtlDataG1)

 

OC_UNOCCUPIED

1

 

 

 

 

 

 

 

 

 

nviManOcc. The valid enumerated states are: OC_OCCUPIED indicates

 

 

 

 

OC_BYPASS

2

 

 

 

 

 

 

 

 

 

occupied OC_UNOCCUPIED indicates not occupied OC_BYPASS

 

 

 

 

OC_STANDBY

3

 

 

 

 

 

 

 

 

 

indicates that the space is bypass occupied for

 

 

 

 

OC_NUL

255

 

 

 

 

 

 

 

 

nciAux2SetPt.uiBypassTime seconds after nviManOcc is first set to

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OC_BYPASS OC_STANDBY indicates that the space is standby. OC_NUL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

means that no manual override is active.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

StatusOcySen

nvoData1

SenOcc

OC_OCCUPIED

0

 

OC_NUL

 

 

X

 

 

 

 

SenOcc: SenOcc indicates the current state of the sensed occupancy and

 

 

(nvoCtlDataG1)

 

OC_UNOCCUPIED

1

 

 

 

 

 

 

 

 

 

is calculated from nviSensorOcc and the local occupancy sensor via

 

 

 

 

OC_BYPASS

2

 

 

 

 

 

 

 

 

 

nvoIO.OccupancySensor. The local sensor and nviSensorOcc are ORed

 

 

 

 

OC_STANDBY

3

 

 

 

 

 

 

 

 

 

together. If either the local sensor or nviSensorOcc shows occupancy, then

 

 

 

 

OC_NUL

255

 

 

 

 

 

 

 

 

SenOcc shows occupancy. The valid enumerated values are:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OC_OCCUPIED means that occupancy is sensed by one or more

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

sensor.OC_UNOCCUPIED means that no occupancy is sensed by any

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

sensors.OC_NUL means no local sensor is configured and nviSensorOcc

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

has failed to be received periodically (bound or not bound).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

StatusEconEn

nvoData1

EconEnable

ST_OFF

0

 

ST_NUL

 

 

X

 

 

 

 

EconEnable: EconEnable indicates the current suitability of outdoor air for

 

 

(nvoCtlDataG1)

 

ST_LOW

1

 

 

 

 

 

 

 

 

 

use in cooling used by the control process EconEnable is periodically

85

 

 

 

ST_MED

2

 

 

 

 

 

 

 

 

 

calculated either from the sensor(s) specified by nciConfig.EconEnable or

 

 

 

ST_HIGH

3

 

 

 

 

 

 

 

 

 

from nviEcon. When nviEcon.state is not SW_NUL, then the local inputs

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ST_ON

4

 

 

 

 

 

 

 

 

 

are ignored and nviEcon.state is used instead. See nciConfig.EconEnable.

 

 

 

 

ST_NUL

255

 

 

 

 

 

 

 

 

The valid enumerated values are: ST_OFF means the outdoor air is not

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

suitable to augment cooling. ST_ON means the outdoor air is suitable to

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

augment cooling.ST_NUL means no local sensor is selected by

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nciConfig.EconEnable, or the selected local sensor has failed or has not

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

been configured by nciIoSelect, and that nviEcon.state is SW_NUL. The

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

outdoor air is considered unsuitable for cooling.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SaFanStatus

nvoData1

ProofAirFlow

ST_OFF

0

 

ST_NUL

 

 

X

 

 

 

 

ProofAirFlow: ProofAirFlow indicates the current state of the ProofAirFlow

 

 

(nvoCtlDataG1)

 

ST_LOW

1

 

 

 

 

 

 

 

 

 

switch used by the control process and is read by the local sensor via

 

 

 

 

ST_MED

2

 

 

 

 

 

 

 

 

 

nvoIO.ProofAirFlow. The valid enumerated values are: ST_OFF means air

 

 

 

 

ST_HIGH

3

 

 

 

 

 

 

 

 

 

flow is not detected. ST_ON means air flow is detected. ST_NUL means no

 

 

 

 

ST_ON

4

 

 

 

 

 

 

 

 

 

air flow switch is configured.

 

 

 

 

ST_NUL

255

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OaEnthCalc

nvoData1

siCalcODEnthalpyS7

btu/lb

 

 

SI_INVALID

 

 

X

 

 

 

 

siCalcODEnthalpyS7: siCalcODEnthalpyS7 is the calculated outdoor air

 

 

(nvoCtlDataG1)

 

0 to 100

 

 

 

 

 

 

 

 

 

 

enthalpy in btu / lb calculated from the siOutdoorTempS7 and

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ubOutdoorHumidityS1. siCalcODEnthalpyS7 is used to determine the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

suitability of outside air for cooling when nciConfig.EconEnable is

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SINGLE_ENTH and both outdoor temperature and humidity sensors are

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

present. siCalcODEnthalpyS7 is compared to the enthalpy setpoint stored

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

in nciAux1SetPts.ubOdEnthalpyEnableS2.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RaEnthCalc

nvoData1

siCalcRAEnthalpyS7

btu/lb

 

 

SI_INVALID

 

 

X

 

 

 

 

siCalcRAEnthalpyS7: siCalcRAEnthalpyS7 is the calculated return air

 

 

(nvoCtlDataG1)

 

0 to 100

 

 

 

 

 

 

 

 

 

 

enthalpy in btu / lb calculated from the siReturnTempS7 and

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ubReturnHumidityS1. siCalcRAEnthalpyS7 is used to determine the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

suitability of outside air for cooling when nciConfig.EconEnable is

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DIFF_ENTH and both outdoor and return (or space) temperature sensors

74-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

and humidity sensors are present. Sensors may be physically connected to

 

 

 

 

 

 

 

 

 

 

 

 

 

 

the node or available over the network.

2958— 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EXCEL 10 W7750A,B,C CONSTANT VOLUME AHU CONTROLLER

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Image 85
Page 84 Page 86
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
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