Honeywell W7750A specifications Hvacauto Hvacnul, Hvacmrngwrmup, Hvactest

Page 101

Table 26. LONMARK® /Open System 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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DestEmergCmd

nviEmerg

 

EMERG_NORMAL

0

EMERG_NORMAL

M

X

X

X

 

X

 

Emerg is an emergency input from a device that determines the correct

 

 

(SNVT_hvac_emerg)

 

EMERG_PRESSURIZE

1

 

 

 

 

 

 

 

 

action during a given emergency (such as a fire). If Emerg is

 

 

 

 

EMERG_DEPRESSURIZE

2

 

 

 

 

 

 

 

 

EMERG_NORMAL the fan and economizer damper are controlled by the

 

 

 

 

EMERG_PURGE

3

 

 

 

 

 

 

 

 

heating and cooling control algorithm. If Emerg is EMERG_PRESSURIZE,

 

 

 

 

EMERG_SHUTDOWN

4

 

 

 

 

 

 

 

 

then the fan is controlled on and the economizer damper is open. If Emerg

 

 

 

 

EMERG_NUL

255

 

 

 

 

 

 

 

 

is EMERG_DEPRESSURIZE, then the fan is controlled on and the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

economizer damper is closed. If Emerg is EMERG_SHUTDOWN, then the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

fan is controlled off and the economizer damper is closed. If Emerg is

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EMERG_PURGE, the fan and damper go to the state specified by

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Config.SmokeControl. If Emerg is not configured then it is set to

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EMERG_NUL.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SrcUnitStatus

nvoUnitStatus

mode

HVAC_AUTO

0

HVAC_NUL

M

X

 

X

 

 

 

Mode is set according to the Data1.mode. If Data1.mode is

 

 

(SNVT_hvac_status)

 

HVAC_HEAT

1

 

 

 

 

 

 

 

 

START_UP_WAIT, SMOKE_EMERGENCY, or FREEZE_PROTECT, mode

 

 

 

 

HVAC_MRNG_WRMUP

2

 

 

 

 

 

 

 

 

is set to HVAC_NUL which indicates that the node is in a mode not

 

 

 

 

HVAC_COOL

3

 

 

 

 

 

 

 

 

supported by the SNVT_hvac_mode data type. If Data1.mode is HEAT,

 

 

 

 

HVAC_NIGHT_PURGE

4

 

 

 

 

 

 

 

 

then mode is set to HVAC_HEAT which indicates that heating energy is

 

 

 

 

HVAC_PRE_COOL

5

 

 

 

 

 

 

 

 

being supplied to the controlled space. If Data1.mode is COOL, then mode

 

 

 

 

HVAC_OFF

6

 

 

 

 

 

 

 

 

is set to HVAC_COOL, which indicates that cooling energy is being

101

 

 

 

HVAC_TEST

7

 

 

 

 

 

 

 

 

supplied to the controlled space. If Data1.mode is OFF_MODE or

 

 

 

HVAC_EMERG_HEAT

8

 

 

 

 

 

 

 

 

DISABLED_MODE, then mode is set to HVAC_OFF which indicates that

 

 

 

 

HVAC_FAN_ONLY

9

 

 

 

 

 

 

 

 

the node is not running its normal temperature control and the outputs are

 

 

 

 

HVAC_NUL

255

 

 

 

 

 

 

 

 

not turned off. If Data1.mode is EMERG_HEAT, mode is set to

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HVAC_EMERG_HEAT where, in a heat pump application, the compressor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

stages are disabled and only auxiliary heating stages are turned on. If

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Data1.mode is MANUAL or FACTORY_TEST, mode is set to HVAC_TEST

 

 

 

 

 

 

 

 

 

 

 

 

 

 

which indicates that the node is in a manual or test mode. If Data1.mode is

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FAN_ONLY, mode is set to HVAC_FAN_ONLY which indicates that the fan

 

 

 

 

 

 

 

 

 

 

 

 

 

 

is running but the space temperature control is turned off.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nvoUnitStatus

heat_output_primary

Percentage

 

0

 

 

 

 

 

 

 

heat_output_primary reports the current percentage of heating stages or

 

 

(SNVT_hvac_status)

 

0 to 100

 

 

 

 

 

 

 

 

 

modulating heat turned on. If the node is controlling a heat pump,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

heat_output_primary reports the current percentage of compressor stages

 

 

 

 

 

 

 

 

 

 

 

 

 

 

turned on when the node is in the HVAC_HEAT mode.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nvoUnitStatus

heat_output_secondary

Percentage

 

0

 

 

 

 

 

 

 

If the node is controlling a heat pump, heat_output_secondary reports the

 

 

(SNVT_hvac_status)

 

0 to 100

 

 

 

 

 

 

 

 

 

current percentage of auxiliary heating stages turned on when the node is

 

 

 

 

 

 

 

 

 

 

 

 

 

 

in the HVAC_HEAT or HVAC_EMERG_HEAT mode. If the node is not

 

 

 

 

 

 

 

 

 

 

 

 

 

 

controlling a heat pump, heat_output_secondary is set to zero.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nvoUnitStatus

cool_output

Percentage

 

0

 

 

 

 

 

 

 

cool_output reports the current percentage of cooling stages or modulating

 

 

(SNVT_hvac_status)

 

0 to 100

 

 

 

 

 

 

 

 

 

cool turned on. If the node is controlling a heat pump, cool_output reports

 

 

 

 

 

 

 

 

 

 

 

 

 

 

the current percentage of compressor stages turned on when the node is in

 

 

 

 

 

 

 

 

 

 

 

 

 

 

the HVAC_COOL mode.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nvoUnitStatus

econ_output

Percentage

 

0

 

 

 

 

 

 

 

If there is a modulating economizer configured, econ_output reports the

 

 

(SNVT_hvac_status)

 

0 to 100

 

 

 

 

 

 

 

 

 

percentage that the economizer damper is opened. If no economizer is

 

 

 

 

 

 

 

 

 

 

 

 

 

 

configured, econ_output reports 0.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nvoUnitStatus

fan_output

Percentage

 

0

 

 

 

 

 

 

 

When the fan is running, fan_output is 100 percent, and when the fan is not

74-2958— 1

 

(SNVT_hvac_status)

 

0 to 100

 

 

 

 

 

 

 

 

 

running, fan_output is 0 percent.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EXCEL 10 W7750A,B,C CONSTANT VOLUME AHU CONTROLLER

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Contents Excel 72-2958 General Considerations W7750 ControllersAppendices 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 W7750ASpecial Note for the W7750B,C Unit Performance SpecificationsPower Memory Capacity Specified Space Temperature Sensing RangeCPU Excel 10 W7750C Constant Volume AHU Controller Jack Lonmark Functional Profile DIN rail adaptersAnalog Inputs Inputs/OutputsDigital Outputs Digital InputsTriac Outputs on the W7750B,C Models only 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 DeviceVA Information Obtained from Power WiringPower Budget Calculation Example 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 optionsSensor with Bypass/LED and Lonworks Jack T7770 and T7560 Wall ModulesHoneywell Logo T7770D1018 Echelon Based Components and Parts Accessories SensorsAccessories Troubleshooting Configure ControllersTroubleshooting Excel 10 Controllers and Wall Modules CablingResistance Value ohms AlarmsExcel 10 Alarms 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 DLCDirty Filter Monitor Temperature Control OperationsSee for a diagram of a typical W7750 Unit 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 SixtyfiftyTrue PPM SiinvalidFalse 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 FHvactest Hvacauto HvacnulHvacmrngwrmup 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 Relative Humidity Percentage Voltage/Current SensorsSensor Voltage Versus Humidity Humidity Percentage 113 74-2958 Sensor Current Versus Enthalpy volts Enthalpy mAMAmAmAmA AmA mA mA T7242 or equivalent74-2958 114 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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