Honeywell W7750A specifications Ppm

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76

Table 21. Control Parameters. (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

 

 

 

 

 

 

 

 

 

 

 

OaEnthEn

nciAux1SetPt

ubOdEnthalpyEnableS2

btu/lb

 

 

25

P

 

X

X

 

 

 

If Config.EconEnable is SINGLE_ENTH, and calculated outdoor

 

 

 

0 to 65

 

 

 

 

 

 

 

 

 

 

enthalpy is less than OdEnthalpyEnable, and outdoor temperature is

 

 

 

 

 

 

 

 

 

 

 

 

 

 

less than OdEconEnableTemp, then outdoor air is judged suitable to

 

 

 

 

 

 

 

 

 

 

 

 

 

 

augment mechanical cooling.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EconMinPos

nciAux1SetPt

ubEconMinPosS0

Percentage

 

 

0

P

 

X

X

 

 

 

The minimum allowed position of the economizer damper for HEAT

 

 

 

0 to 100

 

 

 

 

 

 

 

 

 

 

and COOL is EconMinPos.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EconIAQPos

nciAux1SetPt

ubEconIaqPosS0

Percentage

 

 

80

P

 

X

X

 

 

 

The control overrides the economizer damper to EconIaqPos when

 

 

 

0 to 100

 

 

 

 

 

 

 

 

 

 

poor indoor air quality is detected.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IAQSetpt

nciAux1SetPt

siCO2IaqLimitS0

PPM

 

 

800

P

 

X

X

 

 

 

When an analog CO2 sensor is configured and the sensed CO2 is

 

 

 

0 to 2000

 

 

 

 

 

 

 

 

 

 

greater than CO2IaqLimit, then poor indoor air quality is detected

 

 

 

 

 

 

 

 

 

 

 

 

 

 

and Data1.OverRide is set to 1. When the sensed CO2 is less than

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CO2IaqLimit, then the indoor air quality is considered acceptable

 

 

 

 

 

 

 

 

 

 

 

 

 

 

and Data1.IaqOverRide is set to 0. oData1.IaqOverRide is used to

 

 

 

 

 

 

 

 

 

 

 

 

 

 

set the economizer damper to Aux1SetPt. EconIaqPos and to

 

 

 

 

 

 

 

 

 

 

 

 

 

 

possibly turn on the heat according to the state of

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Config.IaqUseHeat.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PwmPeriod

nciAux1SetPt

siPwmPeriodS4

 

 

 

100

P

 

X

X

 

 

 

When pulse width modulation is used, the period of one pulse width

 

 

 

 

 

 

 

 

 

 

 

 

 

 

modulation cycle is PwmPeriod seconds. The smallest resolution is

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.1 seconds.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PwmZeroScale

nciAux1SetPt

siPwm0pcntS4

Seconds

 

 

1

P

 

X

X

 

 

 

When pulse width modulation is used, the period of a pulse for zero

 

 

 

0 to 2047

 

 

 

 

 

 

 

 

 

 

percent output (damper or valve at open position) is Pwm0pcntS4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

seconds. The smallest resolution is 0.1 seconds.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PwmFullScale

nciAux1SetPt

siPwm100pcntS4

Seconds

 

 

99

P

 

X

X

 

 

 

When pulse width modulation is used, the period of a pulse for full

 

 

 

0 to 2047

 

 

 

 

 

 

 

 

 

 

scale output (damper or valve at open position) is Pwm100pcnt

 

 

 

 

 

 

 

 

 

 

 

 

 

 

seconds. The smallest resolution is 0.1 seconds.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BypTime

nciAux2SetPt

uiBypassTime

minutes

 

 

180

P

 

X

X

 

 

 

uiBypassTime is the time between the pressing of the override

 

 

 

0 to 1080

 

 

 

 

 

 

 

 

 

 

button at the wall module (or initiating OC_BYPASS via ManOcc)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

and the return to the original occupancy state. When the bypass

 

 

 

 

 

 

 

 

 

 

 

 

 

 

state has been activated, the bypass timer is set to BypassTime.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FltrPressStPt

nciAux2SetPt

ubFilterPressStPtS5

inw (kPa)

 

 

0.5

P

 

X

X

 

 

 

If a filter pressure sensor is configured by IoSelect and the filter

 

 

 

0 to 5 (0 to 1.25)

 

 

 

 

 

 

 

 

 

 

pressure reported in Data1 FilterPressure exceeds FilterPressStPt,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

then a DIRTY_FILTER alarm is generated and Data1.DirtyFilter is

 

 

 

 

 

 

 

 

 

 

 

 

 

 

set to 1.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

StptKnobLowLim

nciAux2SetPt

siLowStPtS7

Degrees F

 

 

55

P

 

X

X

 

 

 

LowStPt is the lowest value reported for the setpoint knob.

 

 

 

-9 to 90

 

 

 

 

 

 

 

 

 

 

Dependent on the configuration of the setpoint knob (see

 

 

 

Degrees C

 

 

 

 

 

 

 

 

 

 

Config.SetPntKnob) this setting is either absolute [degree

 

 

 

(-23 to 32)

 

 

 

 

 

 

 

 

 

 

Fahrenheit (50 to 90)] in case of absolute setpoint knob configuration

 

 

 

 

 

 

 

 

 

 

 

 

 

 

or relative [delta degree Fahrenheit (-9 to +9)] in case of relative

 

 

 

 

 

 

 

 

 

 

 

 

 

 

setpoint knob configuration.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

StptKnobHiLim

nciAux2SetPt

siHighStPtS7

Degrees F

 

 

85

P

 

X

X

 

 

 

HighStPt is the highest value reported for the setpoint knob.

 

 

 

-9 to 90

 

 

 

 

 

 

 

 

 

 

Dependent on the configuration of the setpoint knob (see

 

 

 

Degrees C

 

 

 

 

 

 

 

 

 

 

Config.SetPntKnob) this setting is either absolute [degree

 

 

 

(-23 to 32)

 

 

 

 

 

 

 

 

 

 

Fahrenheit (50 to 90)] in case of absolute setpoint knob configuration

 

 

 

 

 

 

 

 

 

 

 

 

 

 

or relative [delta degree Fahrenheit (-9 to +9)] in case of relative

 

 

 

 

 

 

 

 

 

 

 

 

 

 

setpoint knob configuration.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EXCEL 10 W7750A,B,C CONSTANT VOLUME AHU CONTROLLER

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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