Honeywell W7750A StatusIaqOvr NvoData1 IaqOverRide, NciAux1SetPts.ubEconIaqPosS0, instead

Page 87

 

 

 

 

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

 

 

 

 

 

 

 

 

 

 

 

 

StatusIaqOvr

nvoData1

IaqOverRide

FALSE

0

 

FALSE

 

 

X

 

 

 

 

IaqOverRide: When an economizer is configured, IaqOverRide indicates

 

 

(nvoCtlDataG1)

 

TRUE

1

 

 

 

 

 

 

 

 

 

the current state of the indoor air quality, an is used by the control process

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

to open the economizer damper to let in more outside air. 1 means poor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

indoor air quality, and 0 means indoor air quality is OK. When IaqOverRide

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

is 1, the IAQ_OVERRIDE alarm is initiated. IaqOverRide indicates poor air

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

quality if the analog sensor OR a digital sensor (local or via network) shows

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

poor air quality. Specifically, if nvoData2.siSpaceCo2S0 is not SI_INVALID,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

and exceeds nciAux1SetPt.siCO2IaqLimitS0, then poor air quality is

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

detected. Also if nviIaqOvr.state is SW_ON, then poor air quality is

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

detected. Or if a local digital input is configured as IAQ_OVERRIDE_IN and

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nvoIO.IaqOverRide is 1 then poor air quality is also detected. When poor air

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

quality is detected, the economizer minimum position is set to

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nciAux1SetPts.ubEconIaqPosS0, instead of

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nciAux1SetPts.ubEconMinPosS0.When an economizer is not configured,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IaqOverRide is 0.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

StatusSmoke

nvoData1

SmokeMonitor

FALSE

0

 

FALSE

 

 

X

 

 

 

 

SmokeMonitor: SmokeMonitor indicates the current state of the

 

 

(nvoCtlDataG1)

 

TRUE

1

 

 

 

 

 

 

 

 

 

SmokeMonitor input used by the control process and is read from another

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

node via nviEmerg or the local sensor via nvoIO.SmokeMonitor. If either

87

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nviEmerg is not EMERG_NORMAL or nvoIO.SmokeMonitor is 1, then

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SmokeMonitor is 1 meaning that smoke is detected. Otherwise

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SmokeMonitor is 0, meaning smoke is not detected. When smoke monitor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

is 1, the algorithm controls as per the settings found in

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nciConfig.SmokeControl.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

StatusWndw

nvoData1

WindowOpen

FALSE

0

 

FALSE

 

 

X

 

 

 

 

WindowOpen: WindowOpen indicates the current state of the window

 

 

(nvoCtlDataG1)

 

TRUE

1

 

 

 

 

 

 

 

 

 

sensors and is calculated from nviWindow state and the local occupancy

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

sensor via nvoIO.WindowOpen. The local sensor and nviWindow are ORed

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

together. If either the local sensor or nviWindow shows that the window is

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

open (nvoIO.WindowOpen = 1 or nviWindow.state = SW_ON), then

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WindowOpen shows that the window is open. 1 means that the window is

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

open and 0 means that the window is closed. When the window is open, the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

controller mode is switched to FREEZE_PROTECT.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

StatusFilter

nvoData1

DirtyFilter

FALSE

0

 

FALSE

 

 

X

 

 

 

 

DirtyFilter: DirtyFilter indicates the state of the air filter via the

 

 

(nvoCtlDataG1)

 

TRUE

1

 

 

 

 

 

 

 

 

 

nvoIO.DirtyFilter digital input or the nvoData1.siFilterPressureS10 analog

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

input. If nvoData1.siFilterPressureS10 exceeds

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nciAux2SetPt.ubFilterPressStPtS5, a dirty filter is indicated. DirtyFilter is set

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

to 1 when a dirty filter has been detected by either method for one minute.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DirtyFilter is set to 0 when a dirty filter has not been detected by either

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

method for one minute. When DirtyFilter is 1, a DIRTY_FILTER alarm is

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

generated.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ShutDown

nvoData1

ShutDown

FALSE

0

 

FALSE

 

 

X

 

 

 

 

ShutDown: ShutDown indicates the state of the ShutDown input via

 

 

(nvoCtlDataG1)

 

TRUE

1

 

 

 

 

 

 

 

 

 

nvoIO.ShutDown. 1 means a ShutDown is being commanded and 0 means

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

normal operation.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

StatFreezeStat

nvoData1

CoilFreezeStat

FALSE

0

 

FALSE

M

 

X

X

 

 

 

StatFreezeStat: StatFreezeStat gives the state of the cooling coil controlled

 

 

(nvoCtlDataG1)

 

TRUE

1

 

 

 

 

 

 

 

 

 

by the CVAHU. False (0) it is not freezing or True (1) it is freezing.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE: Only use this User Address when using E-Vision.

74

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MonitorSw

nvoData1

MonSwitch

FALSE

0

 

FALSE

 

 

X

 

 

 

 

MonSwitch: MonSwitch is the state of the digital input wired to a general

-

 

(nvoCtlDataG1)

 

TRUE

1

 

 

 

 

 

 

 

 

 

purpose monitor switch via nvoIO.MonSwitch. 1 means that the switch is

2958—1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

closed and 0 means that the switch is open.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EXCEL 10 W7750A,B,C CONSTANT VOLUME AHU CONTROLLER

Image 87
Contents Excel General Considerations W7750 Controllers Appendices72-2958 74-2958 List of Figures74-2958 Setpoint ramping parameters with ramp rate calculationList of Tables Typical system overview Description of DevicesControl Provided Control ApplicationForm No Title Products CoveredOrganization of Manual Applicable LiteratureAgency Listings Product NamesAbbreviations and Definitions Controllers ConstructionDI-1 W7750APerformance Specifications PowerSpecial Note for the W7750B,C Unit Specified Space Temperature Sensing Range CPUMemory Capacity Excel 10 W7750C Constant Volume AHU Controller Jack Lonmark Functional Profile DIN rail adaptersAnalog Inputs Inputs/OutputsDigital Inputs Triac Outputs on the W7750B,C Models onlyDigital Outputs T7770C Wall ModulesDuct Sensor T7770A1006T7560A,B construction in in. mm General ConfigurationsConfiguration Options Summary For W7750A,B,C Controllers Modulating HEATING/COOLING Control Allowable Heating and Cooling Equipment ConfigurationsStaged HEATING/COOLING Control Heat Pump ControlPneumatic Actuator Control Economizer ControlMIXED-OUTPUT-TYPE Control Occupancy SensorWindow Open/Closed Digital Input Wall Module OptionsSmoke Control Modes of OperationDirty Filter Monitor Indoor Air Quality IAQ OverrideAssigned OFF ModeDisabled NotStep No Description OverviewPlan the System Determine Other Bus Devices RequiredLonworks Bus Layout Lay Out Communications and Power WiringExcel VAV Cvahu Power Wiring Power Budget Calculation ExampleDeviceVA Information Obtained from Line Loss VA Ratings For Transformer Sizing Device DescriptionML6161A/B Damper Actuator, 35 lb-in R8242A Contactor ML7984B PWM Valve ActuatorNema 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 optionsT7770 and T7560 Wall Modules Honeywell Logo T7770D1018Sensor with Bypass/LED and Lonworks Jack Accessories Sensors AccessoriesEchelon Based Components and Parts Cabling Configure ControllersTroubleshooting Troubleshooting Excel 10 Controllers and Wall ModulesAlarms Excel 10 AlarmsResistance Value ohms W7750 Controller Status LED Broadcasting the Service MessageSensor Calibration Appendix A. Using E-Vision to Commission a W7750 ControllerSetting the Pid Parameters T7770C,D Wall Module Bypass Pushbutton and Override LEDAppendix B. Sequences of Operation Common Operations IAQ Option Room Temperature Sensor RmTempHeating EconomizerBypassTime Bypass Mode StatusOvrd and StatusLedRemote Setpoint RmtStptPot Setpoint Limits LoSetptLim and HiSetptLimBypass Occupied Continuous Unoccupied ModeOccupancy Mode and Manual Override Arbitration Not AssignedSetpoint Ramping Recovery Ramping for Heat Pump SystemsTime Clock OccTimeClock Schedule Master SchedMasterDemand Limit Control DLC Window Sensor StatusWndwSmoke Control FAN OperationTemperature Control Operations See for a diagram of a typical W7750 UnitDirty Filter Monitor Three Stages Staged Cooling ControlONE Stage TWO StagesOutdoor AIR Lockout of HEATING/COOLING Cascade Control of Modulating COOLING/HEATINGSeries 60 Modulating Control Pulse Width Modulating PWM ControlDischarge AIR LOW Limit Control Economizer ENABLE/DISABLE ControlIndoor AIR Quality IAQ Override Freeze StatStatus Points Address Input Output Points AddressControl Parameters Address Energy Management Points AddressMappable User Addresses and Table Number Enthalpy Relative TemperatureAir Flow CO2 ConcentrationEnumerated values are shown Application reset therefore, these points canPlaced in manual mode through a menu Valid states and the correspondingComments DefaultInput/Output Points NvName Field NameOccsensor Unuseddi NciIoSelect DigitalIn1Occsensor Shcedmasterin 255 NciIoSelect DigitalIn2COOLSTAGE4 COOLSTAGE1COOLSTAGE2 COOLSTAGE3Siinvalid SixtyfiftyPPM Siinvalid FalseTrue OccSensr NvoIO EconEnSw NvoIO EconEnableInPosition when poor indoor air quality is detected StatusDI3 NvoIO UbDigitalInNvName Default CommentsControl Parameters MaxClRamp, OdTempMaxClRamp, OdEnthalpyEnableMaxClRamp NciAux1SetPt UbMaxClRampS0 Degrees F/Hr MinClRamp NciAux1SetPt UbMinClRampS0 Degrees F/HrPPM GainHeatProp NciAux2SetPt UbKpHeatS2 Degrees F Degrees C Discharge air temperature cascade control loopGainCoolProp NciAux2SetPt UbKpCoolS2 Degrees F Degrees C Gain for the cooling control loopEnergy Management Points Network variable input fails Refer to WSHPEnable.valueNviFree1 Value Auxiliary functions. nviFree1 controls the FREE1OUT255 SrcTimeClkCt NvoTimeClk Value NviTimeClk ValueDestTimeClk NviTimeClk State Refer to nviTimeClk.valueStatus Points Bit Offset = InvalidSetPtAlrm Alarmbit1Bit Offset = SensorFailAlrm Bit Offset = FrostProtectAlrmUpdateallfields NoalarmNodedisabled SmokealarmCool DisabledmodeStartupwait HeatStatusManOcc NvoData1 NetManOcc StatusEconEn NvoData1 EconEnableAir flow switch is configured NciAux1SetPts.ubOdEnthalpyEnableS2For both heating or cooling HeatStgsOn NvoData1 HeatStagesOnAuxiliary heating stages are turned on CoolStgsOn NvoData1 CoolStagesOnMonitorSw NvoData1 MonSwitch Is 1, the algorithm controls as per the settings foundNciConfig.SmokeControl Controller mode is switched to FreezeprotectDischargetempfield BypasstimerfieldTempcontrolptfield SpacetempfieldUbinvalid Bit Offset = Temperature SetPtError NvoError Errorbit0 StatusError NvoError Errorbit0SpaceTempError NvoError Errorbit0Bit Offset = SpaceCO2Error NvoError Errorbit1 NvoError Errorbit1Bit Offset = RtnEnthalpyError NvoError Errorbit1 Are disabled as if the sensor was not configuredBit Offset = NvByPassError NvoError Errorbit3 Bit Offset = NvWindowError NvoError Errorbit2Bit Offset = NvDlcShedError NvoError Errorbit2 Bit Offset = NvTodEventError NvoError Errorbit3Calibration Points CfglocalCfgexternal CfgnulConfiguration Parameters False True UseRaTempCtl NciConfig DisMinHtTime NciConfig DisableHeatMinTimeDisMinClTime NciConfig DisableCoolMinTime CascCntrl NciConfig CascadeControlBypassonly Last NETOffset Absolutemiddle None NormalLonmark /Open System Points Hvacoff HvacautoHvacheat Hvacmrngwrmup Hvacprecool Hvaccool Hvacnightpurge HvacnulSrcRmTemp NvoSpaceTemp Degrees F 74-2958 100DestRmTemp NviSpaceTemp Degrees F SNVTtempp 14 toHvacauto Hvacnul HvacmrngwrmupHvactest Alarmnotifydisabled NvoStatus Unabletomeasure NvoStatus Electricalfault103 NvoStatus Inalarm 255 Not configured 74-2958Swon SrcEconEnCt NvoEcon Value On other nodes. If the economizer function is configured byCorresponding economizer function is not enabled because SrcEconEnable NvoEcon StateDirect Access And Special Points OFF Data Share Points Mapped points = number of mapped points per Excel Approximate Memory Size Estimating Procedure=using One-to-Many and not using points = including mapped points and others forSensor Use Sensor Resistance Versus Temperature Resistance OhmsResistance Sensors Sensor TypeAbove and Below Setpoint Resistance Ohms Offset Setpoint TemperatureDirect Setpoint Temperature T7770B,C 10K ohm setpoint potentiometer RelativeVoltage/Current Sensors Sensor Voltage Versus Humidity Humidity PercentageSensor Voltage Versus Humidity Relative Humidity Percentage 113 74-2958 Sensor Current Versus Enthalpy volts Enthalpy mAT7242 or equivalent 74-2958 114MAmAmAmA AmA mA mA Sensor Voltage Versus Input Voltage To A/D Voltage to A/D 50.0.13 Sensor Voltage Vdc Versus Pressure InwPressure Inw kPa Sensor Voltage Vdc Inw