Honeywell W7750A Bypasstimerfield, Tempcontrolptfield, Spacetempfield, Dischargetempfield

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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

 

 

 

 

 

 

 

 

 

 

 

WSHPEnable

nvoData1

WSHPEnable

FALSE

0

 

FALSE

 

 

X

 

 

 

 

WSHPEnable: WSHPEnable reports the state of the current state of

 

(nvoCtlDataG1)

 

TRUE

1

 

 

 

 

 

 

 

 

 

nviWSHPEnable. The states for nviWSHPEnable are as follows: If

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nviWSHPEnable.state is SW_OFF and the nviWSHPEnable.value is 0,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

then WSHPEnable is 0 (Disable Water Source Heat Pump). If

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nviWSHPEnable.state is SW_ON and the nviWSHPEnable.value is 0, then

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WSHPEnable is 0 (Disable Water Source Heat Pump). If

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nviWSHPEnable.state is SW_ON and the nviWSHPEnable.value is not 0,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

then WSHPEnable is 1 (Enable Water Source Heat Pump). If

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nviWSHPEnable.state is SW_NUL and the nviWSHPEnable.value is any

 

 

 

 

 

 

 

 

 

 

 

 

 

 

value, then WSHPEnable is 1 (Enable Water Source Heat Pump when

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nviWSHPEnable is not bound to another node).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nvoData2

FieldNo

UPDATE_ALL_FIELDS

 

 

UPDATE_ALL_FIELDS

 

 

 

 

 

 

 

nvoData2. FieldNo: nvoData2 and nvoCtlDataG2 are output network

 

(nvoCtlDataG2)

 

BYPASS_TIMER_FIELD

 

 

 

 

 

 

 

 

 

 

variables indicating the node status. The information contained in these

 

 

 

TEMP_CONTROL_PT_FIELD

 

 

 

 

 

 

 

 

 

 

network variables are typically used to display the node status on an

 

 

 

SPACE_TEMP_FIELD

 

 

 

 

 

 

 

 

 

 

operator terminal, used in a trend log, or used in a control process. The

 

 

 

DISCHARGE_TEMP_FIELD

 

 

 

 

 

 

 

 

 

 

information contained in nvoCtlDataG2 and nvoData2 are identical.

 

 

 

DISCHARGE_SET_PT_FIELD

 

 

 

 

 

 

 

 

 

 

nvoData2 is a polled network variable and must be polled by the receiver.

 

 

 

RETURN_TEMP_FIELD

 

 

 

 

 

 

 

 

 

 

nvoCtlDataG2 uses the SGPUC mechanism. FieldNo indicates which other

 

 

 

RETURN_HUMIDITY_FIELD

 

 

 

 

 

 

 

 

 

 

data field in the SGPUC network variable has changed since the last time it

 

 

 

RETURN_ENTHALPY_FIELD

 

 

 

 

 

 

 

 

 

 

was sent on the network according to the SGPUC mechanism.

 

 

 

OUTDOOR_TEMP_FIELD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OUTDOOR_HUMIDITY_FIELD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OUTDOOR_ENTHALPY_FIELD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FILTER_PRESSURE_FIELD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SPACE_CO2_FIELD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MONITOR_VOLTS_FIELD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COOL_POS_FIELD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HEAT_POS_FIELD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ECON_POS_FIELD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

UPDATE_NO_FIELDS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BypTimer

nvoData2

uiBypassTimer

minutes

 

 

0

 

 

X

 

 

 

 

uiBypassTimer: The time left in the bypass timer is uiBypassTimer minutes.

 

(nvoCtlDataG2)

 

0 to 2880

 

 

 

 

 

 

 

 

 

 

If uiBypassTimer is zero, then the bypass timer is not running. If

 

 

 

 

 

 

 

 

 

 

 

 

 

 

uiBypassTimer is not zero, it is decremented every minute.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RmTempActSpt

nvoData2

siTempControlPtS7

Degrees F

 

 

SI_INVALID

 

 

X

 

 

 

 

siTempControlPtS7: The current temperature control point (such that, the

 

(nvoCtlDataG2)

 

50 to 85

 

 

 

 

 

 

 

 

 

 

current actual space temperature setpoint which the controller is presently

 

 

 

Degrees C

 

 

 

 

 

 

 

 

 

 

trying to maintain in the conditioned space) is calculated from the various

 

 

 

(10 to 29)

 

 

 

 

 

 

 

 

 

 

Setpoints, operating modes, network variable inputs, and optimum start-up

 

 

 

 

 

 

 

 

 

 

 

 

 

 

parameters. The final result is stored in siTempControlPtS7.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RmTemp

nvoData2

siSpaceTempS7

Degrees F

 

 

SI_INVALID

 

 

 

 

 

 

 

siSpaceTempS7: siSpaceTempS7 is the space temperature used by the

 

(nvoCtlDataG2)

 

40 to 100

 

 

 

 

 

 

 

 

 

 

control process and is read from another node via nviSpaceTemp or a local

 

 

 

Degrees C

 

 

 

 

 

 

 

 

 

 

sensor via nvoIO.siSpaceTempS7 or nvoIO.siReturnTempS7. If the network

 

 

 

(4 to 38)

 

 

 

 

 

 

 

 

 

 

input is not SI_INVALID, then the network input has priority. The local

 

 

 

 

 

 

 

 

 

 

 

 

 

 

sensor is selected by nciConfig.ControlUsesRtnAirTemp. When

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nciConfig.ControlUsesRtnAirTemp is 0, then the space temperature sensor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

is selected. When nciConfig.ControlUsesRtnAirTemp is 1, then the return

 

 

 

 

 

 

 

 

 

 

 

 

 

 

temperature sensor is selected. If the network input and the selected local

 

 

 

 

 

 

 

 

 

 

 

 

 

 

sensor has failed or are not configured, siSpaceTempS7 is SI_INVALID.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EXCEL 10 W7750A,B,C CONSTANT VOLUME AHU CONTROLLER

Image 88
Contents Excel Appendices General Considerations W7750 Controllers72-2958 List of Figures 74-2958Setpoint ramping parameters with ramp rate calculation 74-2958List of Tables Description of Devices Typical system overviewControl Application Control ProvidedProducts Covered Organization of ManualApplicable Literature Form No TitleProduct Names Agency ListingsAbbreviations and Definitions Construction ControllersW7750A DI-1Power Performance SpecificationsSpecial Note for the W7750B,C Unit CPU Specified Space Temperature Sensing RangeMemory Capacity Excel 10 W7750C Constant Volume AHU Controller Jack DIN rail adapters Lonmark Functional ProfileInputs/Outputs Analog InputsTriac Outputs on the W7750B,C Models only Digital InputsDigital Outputs Wall Modules Duct SensorT7770A1006 T7770CT7560A,B construction in in. mm Configurations GeneralConfiguration Options Summary For W7750A,B,C Controllers Allowable Heating and Cooling Equipment Configurations Staged HEATING/COOLING ControlHeat Pump Control Modulating HEATING/COOLING ControlEconomizer Control Pneumatic Actuator ControlOccupancy Sensor Window Open/Closed Digital InputWall Module Options MIXED-OUTPUT-TYPE ControlModes of Operation Dirty Filter MonitorIndoor Air Quality IAQ Override Smoke ControlOFF Mode DisabledNot AssignedOverview Plan the SystemDetermine Other Bus Devices Required Step No DescriptionLay Out Communications and Power Wiring Lonworks Bus LayoutExcel VAV Cvahu Power Budget Calculation Example Power WiringDeviceVA Information Obtained from VA Ratings For Transformer Sizing Device Description ML6161A/B Damper Actuator, 35 lb-in R8242A ContactorML7984B PWM Valve Actuator Line LossPower wiring details for one Excel 10 per Transformer Nema class 2 transformer voltage output limitsPrepare Wiring Diagrams General ConsiderationsW7750 Controllers Factory Default Digital Outputs Terminal Terminal Number DescriptionConstant Volume AHU Controller ML6161 Floating Actuator COM CCW Load Controller Power Heat Wall Economizer Damper PWM Actuator Power Signal W7750C Constant Lonworks Bus Termination Module Pneumatic transducer to W7750B,C Shown, see triangle noteBrown Orange Lonworks Bus termination wiring options Order EquipmentHoneywell Logo T7770D1018 T7770 and T7560 Wall ModulesSensor with Bypass/LED and Lonworks Jack Accessories Accessories SensorsEchelon Based Components and Parts Configure Controllers TroubleshootingTroubleshooting Excel 10 Controllers and Wall Modules CablingExcel 10 Alarms AlarmsResistance Value ohms Broadcasting the Service Message W7750 Controller Status LEDAppendix A. Using E-Vision to Commission a W7750 Controller Setting the Pid ParametersT7770C,D Wall Module Bypass Pushbutton and Override LED Sensor CalibrationAppendix B. Sequences of Operation Common Operations Room Temperature Sensor RmTemp HeatingEconomizer IAQ OptionBypass Mode StatusOvrd and StatusLed Remote Setpoint RmtStptPotSetpoint Limits LoSetptLim and HiSetptLim BypassTimeContinuous Unoccupied Mode Occupancy Mode and Manual Override ArbitrationNot Assigned Bypass OccupiedRecovery Ramping for Heat Pump Systems Time Clock OccTimeClockSchedule Master SchedMaster Setpoint RampingWindow Sensor StatusWndw Smoke ControlFAN Operation Demand Limit Control DLCSee for a diagram of a typical W7750 Unit Temperature Control OperationsDirty Filter Monitor Staged Cooling Control ONE StageTWO Stages Three StagesCascade Control of Modulating COOLING/HEATING Series 60 Modulating ControlPulse Width Modulating PWM Control Outdoor AIR Lockout of HEATING/COOLINGEconomizer ENABLE/DISABLE Control Indoor AIR Quality IAQ OverrideFreeze Stat Discharge AIR LOW Limit ControlInput Output Points Address Control Parameters AddressEnergy Management Points Address Status Points AddressMappable User Addresses and Table Number Relative Temperature Air FlowCO2 Concentration EnthalpyApplication reset therefore, these points can Placed in manual mode through a menuValid states and the corresponding Enumerated values are shownDefault Input/Output PointsNvName Field Name CommentsNciIoSelect DigitalIn1 Occsensor Shcedmasterin255 NciIoSelect DigitalIn2 Occsensor UnuseddiCOOLSTAGE1 COOLSTAGE2COOLSTAGE3 COOLSTAGE4Sixtyfifty SiinvalidFalse PPM SiinvalidTrue EconEnSw NvoIO EconEnableIn Position when poor indoor air quality is detectedStatusDI3 NvoIO UbDigitalIn OccSensr NvoIODefault Comments NvNameControl Parameters OdEnthalpyEnable MaxClRamp NciAux1SetPt UbMaxClRampS0 Degrees F/HrMinClRamp NciAux1SetPt UbMinClRampS0 Degrees F/Hr MaxClRamp, OdTempMaxClRamp,PPM Discharge air temperature cascade control loop GainCoolProp NciAux2SetPt UbKpCoolS2 Degrees F Degrees CGain for the cooling control loop GainHeatProp NciAux2SetPt UbKpHeatS2 Degrees F Degrees CEnergy Management Points Refer to WSHPEnable.value NviFree1 ValueAuxiliary functions. nviFree1 controls the FREE1OUT Network variable input failsNviTimeClk Value DestTimeClk NviTimeClk StateRefer to nviTimeClk.value 255 SrcTimeClkCt NvoTimeClk ValueStatus Points Alarmbit1 Bit Offset = SensorFailAlrmBit Offset = FrostProtectAlrm Bit Offset = InvalidSetPtAlrmNoalarm NodedisabledSmokealarm UpdateallfieldsDisabledmode StartupwaitHeat CoolStatusEconEn NvoData1 EconEnable Air flow switch is configuredNciAux1SetPts.ubOdEnthalpyEnableS2 StatusManOcc NvoData1 NetManOccHeatStgsOn NvoData1 HeatStagesOn Auxiliary heating stages are turned onCoolStgsOn NvoData1 CoolStagesOn For both heating or coolingIs 1, the algorithm controls as per the settings found NciConfig.SmokeControlController mode is switched to Freezeprotect MonitorSw NvoData1 MonSwitchBypasstimerfield TempcontrolptfieldSpacetempfield DischargetempfieldUbinvalid StatusError NvoError Errorbit0 SpaceTempErrorNvoError Errorbit0 Bit Offset = Temperature SetPtError NvoError Errorbit0NvoError Errorbit1 Bit Offset = RtnEnthalpyError NvoError Errorbit1Are disabled as if the sensor was not configured Bit Offset = SpaceCO2Error NvoError Errorbit1Bit Offset = NvWindowError NvoError Errorbit2 Bit Offset = NvDlcShedError NvoError Errorbit2Bit Offset = NvTodEventError NvoError Errorbit3 Bit Offset = NvByPassError NvoError Errorbit3Cfglocal CfgexternalCfgnul Calibration PointsConfiguration Parameters False True DisMinHtTime NciConfig DisableHeatMinTime DisMinClTime NciConfig DisableCoolMinTimeCascCntrl NciConfig CascadeControl UseRaTempCtl NciConfigLast NET Offset AbsolutemiddleNone Normal BypassonlyLonmark /Open System Points Hvacauto HvacheatHvacmrngwrmup Hvacprecool Hvaccool Hvacnightpurge Hvacnul Hvacoff74-2958 100 DestRmTemp NviSpaceTemp Degrees FSNVTtempp 14 to SrcRmTemp NvoSpaceTemp Degrees FHvacmrngwrmup Hvacauto HvacnulHvactest Alarmnotifydisabled NvoStatus Electricalfault 103 NvoStatus Inalarm255 Not configured 74-2958 NvoStatus UnabletomeasureSwon On other nodes. If the economizer function is configured by Corresponding economizer function is not enabled becauseSrcEconEnable NvoEcon State SrcEconEnCt NvoEcon ValueDirect Access And Special Points OFF Data Share Points Approximate Memory Size Estimating Procedure =using One-to-Many and not using points= including mapped points and others for Mapped points = number of mapped points per ExcelSensor Resistance Versus Temperature Resistance Ohms Resistance SensorsSensor Type Sensor UseOffset Setpoint Temperature Direct 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 Sensor Current Versus Enthalpy volts Enthalpy mA 113 74-295874-2958 114 T7242 or equivalentMAmAmAmA AmA mA mA Sensor Voltage Versus Input Voltage To A/D Voltage to A/D Sensor Voltage Vdc Versus Pressure Inw Pressure Inw kPa Sensor Voltage VdcInw 50.0.13