Honeywell W7750A NviFree1 Value, Auxiliary functions. nviFree1 controls the FREE1OUT, 255 74-2958

Page 79

Table 22. Energy Management Points. (Continued)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

User Address

NvName

Field Name

(Metric) or States plus Range

DigitalStateor ValueofState

Default

E-Vision(M,P,S)

Share

Map

DirectAccess

HardwareConfig.

ManualConfig.

FailureDetect

Comments

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

 

 

 

 

Engineering Units: English

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nviFree1

value

0 to 100

 

0

 

 

 

 

 

 

 

Free1.value network variable controls the spare or Free digital output for

 

 

 

 

 

 

 

 

 

 

 

 

 

 

auxiliary functions. nviFree1 controls the FREE1_OUT,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FREE1_OUT_PULSE_ON, and FREE1_OUT_PULSE_OFF outputs (only

 

 

 

 

 

 

 

 

 

 

 

 

 

 

one of these DO selections per controller is allowed). The states have the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

following meaning: If the state is SW_OFF, the corresponding free logical

 

 

 

 

 

 

 

 

 

 

 

 

 

 

output (and therefore the physical output, if configured) is off. If the state is

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SW_ON and the value is 0, then the corresponding free logical output (and

 

 

 

 

 

 

 

 

 

 

 

 

 

 

therefore the physical output, if configured) is off. If the node receives this

 

 

 

 

 

 

 

 

 

 

 

 

 

 

combination of state and value, then state is set to SW_OFF. If the state is

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SW_ON and the value is not zero, then the corresponding free logical

 

 

 

 

 

 

 

 

 

 

 

 

 

 

output (and therefore the physical output, if configured) is on. If the state is

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SW_NUL or other, then the network variable is not bound, the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

communications path from the sending node has failed, or the sending node

 

 

 

 

 

 

 

 

 

 

 

 

 

 

has failed. The corresponding free logical output does not change if the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

network variable input fails.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DestFree1

nviFree1

state

SW_OFF

0

SW_NUL

M

X

 

X

 

X

X

Refer to Free1.value.

 

 

 

 

SW_ON

1

 

 

 

 

 

 

 

 

 

 

 

 

 

SW_NUL

255

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

79

 

nviFree2

value

0 to 100

 

0

 

 

 

 

 

 

 

Free2.value behaves the same as Free 1 value.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DestFree2

nviFree2

state

SW_OFF

0

SW_NUL

M

X

 

X

 

X

X

Refer to Free2.value.

 

 

 

 

SW_ON

1

 

 

 

 

 

 

 

 

 

 

 

 

 

SW_NUL

255

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nviWSHPEnable

value

0 to 100

 

0

 

 

 

 

 

 

 

WSHPEnable.value is used to enable the compressor stages in heat pump

 

 

 

 

 

 

 

 

 

 

 

 

 

 

applications. Typically nviWSHPEnable is bound to a water flow sensor that

 

 

 

 

 

 

 

 

 

 

 

 

 

 

detects heating/cooling water supplied to the heat pump. If there is no water

 

 

 

 

 

 

 

 

 

 

 

 

 

 

flowing the compressor is disabled. If the state is SW_OFF, the compressor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

is disabled in heat pump applications. If the state is SW_ON and the value

 

 

 

 

 

 

 

 

 

 

 

 

 

 

is 0, the compressor is disabled in heat pump applications. If the node

 

 

 

 

 

 

 

 

 

 

 

 

 

 

receives this combination of state and value, then state is set to SW_OFF. If

 

 

 

 

 

 

 

 

 

 

 

 

 

 

the state is SW_ON and the value is not zero, the compressor is enabled in

 

 

 

 

 

 

 

 

 

 

 

 

 

 

heat pump applications. If the state is SW_NUL or other, the network

 

 

 

 

 

 

 

 

 

 

 

 

 

 

variable is not bound and is ignored.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DestWSHPEnable

nviWSHPEnable

state

SW_OFF

0

SW_NUL

 

 

 

 

 

 

X

Refer to WSHPEnable.value.

 

 

 

 

SW_ON

1

 

 

 

 

 

 

 

 

 

 

 

 

 

SW_NUL

255

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

74-2958— 1

EXCEL 10 W7750A,B,C CONSTANT VOLUME AHU CONTROLLER

Page 78 Page 80
Image 79
Page 78 Page 80
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 ApplicationForm No Title Products CoveredOrganization of Manual Applicable LiteratureAgency 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 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 Budget Calculation Example Power WiringDeviceVA 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 optionsHoneywell Logo T7770D1018 T7770 and T7560 Wall ModulesSensor with Bypass/LED and Lonworks Jack Accessories Accessories SensorsEchelon Based Components and Parts Cabling Configure ControllersTroubleshooting Troubleshooting Excel 10 Controllers and Wall ModulesExcel 10 Alarms 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 OperationSee for a diagram of a typical W7750 Unit Temperature Control OperationsDirty 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 SixtyfiftyFalse PPM SiinvalidTrue 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 toHvacmrngwrmup Hvacauto HvacnulHvactest 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 RelativeSensor 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 50.0.13 Sensor Voltage Vdc Versus Pressure InwPressure Inw kPa Sensor Voltage Vdc Inw
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