Honeywell W7750A specifications Inputs/Outputs, Analog Inputs

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EXCEL 10 W7750A,B,C CONSTANT VOLUME AHU CONTROLLER

Hardware

Output

Roof Top Unit Controller number 8030

Inputs/Outputs:

The W7750A Unit supports the following hardware features:

•

Three 20 Kohm NTC (1000 through 150,000 ohm) or

 

PT3000 (250 through 12,000 ohm) resistive analog inputs

 

(one reserved for space temperature and one reserved for

 

the setpoint knob).

•

Three dry contact digital inputs (one reserved for the

nv1

nviSpaceTemp

nv3

SNVT_temp_p Mandatory

Network

nviSetPointVariables

nvoSpaceTemp SNVT_ temp_p

nvoUnitStatus

Bypass pushbutton).

• LED digital output (only for the wall module LED) 2.5V at 3

mA.

nv2

SNVT_temp_p

nv4

SNVT_hvac_status

• Six 24 Vac relay digital outputs (1.5A relays rated at 7.5A

inrush current).

nv5

nv6

nv7

nviApplicMode

nv10

SNVT_hvac_mode

 

nviOccCmd

nv11

SNVT_occupancy

 

Optional

 

nviSetPtOffset

Network

nv12

SNVT_ temp_p

Variables

 

nviOutsideTemp

nvoEffectSetPt SNVT_ temp_p

nvoOutsideTemp SNVT_ temp_p

nvoOutsideRH SNVT_ lev_percent

nvoCO2

The W7750B,C Units support the following hardware features:

• Four 20 Kohm NTC (1000 through 150,000 ohm) or

PT3000 (250 through 12,000 ohm) resistive analog inputs

(one reserved for space temperature and one reserved for

the setpoint knob).

• Two 0.2 to 10 VDC or 2 to 20 mA (user selectable) analog

inputs.

• Five dry contact digital inputs (one reserved for the Bypass

nv8

SNVT_ temp_p

nv16

SNVT_ppm

pushbutton).

• Eight on the W7750B (five on the W7750C) 24 Vac Triac

digital outputs (500 mA MAX). The W7750C Unit also

nv9

nv13

nv14

nv15

nviOutsideRH SNVT_lev_percent

nviSpaceRH SNVT_ lev_percent

nviCO2 SNVT_ppm

nviEmergCmd SNVT_hvac_emerg

 

supports three 4 to 20 mA analog outputs.

•

LED digital output (only for the wall module LED, T7770

 

models or LCD, T7560A,B) 2.5V at 3 mA.

•

One 20 Vdc power supply for auxiliary devices with a

 

maximum current of 50 mA.

ANALOG INPUTS:

NOTE: Only one of each type of input is allowed. For example, only one Outdoor Air Temperature sensor is allowed. No duplicate Outdoor Air Temperature sensors are usable on the same controller.

Configuration Properties

nc49 - Send Heartbeat

(mandatory)

nc60 - Occupancy Temperature Setpoints (mandatory)

nc48 - Maximum Receive Time

(optional)

nc17 - Location

(optional)

nc42 - CO 2Limit

(mandatory)

Manufacturer

Defined

Section

Hardware

Input

M11580

 

Fig. 9. Functional profile of LONMARK® RTU object details (variables not implemented in Excel 10 CVAHU

are greyed).

Environmental:

Operating Temperature: -40 to 150°F (-40 to 65.5°C).

Shipping Temperature:

-40 to 150°F (-40 to 65.5°C).

Relative Humidity:

5% to 95% noncondensing.

Vibration:

Rated V2 level compliant.

Space Temperature:

Type: RTD.

Supported Sensors: T7770A,B,C,D; T7560A,B.

Discharge Air Temperature:

Type: RTD.

Supported Sensors: C7100A1015*, C7770A1006, C7031B1033, C7031C1031, C7031D1062, C7031F1018 (W7750B,C only), C7031J1050, C7031K1017.

Outdoor Air Temperature:

Type: RTD.

Supported Sensors: C7170A1002.

Return Air Temperature:

Type: RTD.

Supported Sensors: C7100A1015*, C7770A1006, C7031B1033, C7031C1031, C7031D1062, C7031F1018 (W7750B,C only), C7031J1050, C7031K1017.

*The PT3000 sensor is not recommended for floating control (real time - discharge or return configured as space sensor). The PT3000 sensor is intended for monitoring or differential (staged) control

74-2958— 1

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Contents Excel General Considerations W7750 Controllers Appendices72-2958 List of Figures 74-2958Setpoint ramping parameters with ramp rate calculation 74-2958List of Tables Description of Devices Typical system overviewControl Application Control ProvidedApplicable Literature Products CoveredOrganization of Manual Form No TitleProduct Names Agency ListingsAbbreviations and Definitions Construction ControllersW7750A DI-1Performance Specifications PowerSpecial Note for the W7750B,C Unit Specified Space Temperature Sensing Range CPUMemory Capacity Excel 10 W7750C Constant Volume AHU Controller Jack DIN rail adapters Lonmark Functional ProfileInputs/Outputs Analog InputsDigital Inputs Triac Outputs on the W7750B,C Models onlyDigital Outputs T7770A1006 Wall ModulesDuct Sensor T7770CT7560A,B construction in in. mm Configurations GeneralConfiguration Options Summary For W7750A,B,C Controllers Heat Pump Control Allowable Heating and Cooling Equipment ConfigurationsStaged HEATING/COOLING Control Modulating HEATING/COOLING ControlEconomizer Control Pneumatic Actuator ControlWall Module Options Occupancy SensorWindow Open/Closed Digital Input MIXED-OUTPUT-TYPE ControlIndoor Air Quality IAQ Override Modes of OperationDirty Filter Monitor Smoke ControlNot OFF ModeDisabled AssignedDetermine Other Bus Devices Required OverviewPlan the System Step No DescriptionLay Out Communications and Power Wiring Lonworks Bus LayoutExcel VAV Cvahu Power Wiring Power Budget Calculation ExampleDeviceVA Information Obtained from ML7984B PWM Valve Actuator VA Ratings For Transformer Sizing Device DescriptionML6161A/B Damper Actuator, 35 lb-in R8242A Contactor 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 EquipmentT7770 and T7560 Wall Modules Honeywell Logo T7770D1018Sensor with Bypass/LED and Lonworks Jack Accessories Sensors AccessoriesEchelon Based Components and Parts Troubleshooting Excel 10 Controllers and Wall Modules Configure ControllersTroubleshooting CablingAlarms Excel 10 AlarmsResistance Value ohms Broadcasting the Service Message W7750 Controller Status LEDT7770C,D Wall Module Bypass Pushbutton and Override LED Appendix A. Using E-Vision to Commission a W7750 ControllerSetting the Pid Parameters Sensor CalibrationAppendix B. Sequences of Operation Common Operations Economizer Room Temperature Sensor RmTempHeating IAQ OptionSetpoint Limits LoSetptLim and HiSetptLim Bypass Mode StatusOvrd and StatusLedRemote Setpoint RmtStptPot BypassTimeNot Assigned Continuous Unoccupied ModeOccupancy Mode and Manual Override Arbitration Bypass OccupiedSchedule Master SchedMaster Recovery Ramping for Heat Pump SystemsTime Clock OccTimeClock Setpoint RampingFAN Operation Window Sensor StatusWndwSmoke Control Demand Limit Control DLCTemperature Control Operations See for a diagram of a typical W7750 UnitDirty Filter Monitor TWO Stages Staged Cooling ControlONE Stage Three StagesPulse Width Modulating PWM Control Cascade Control of Modulating COOLING/HEATINGSeries 60 Modulating Control Outdoor AIR Lockout of HEATING/COOLINGFreeze Stat Economizer ENABLE/DISABLE ControlIndoor AIR Quality IAQ Override Discharge AIR LOW Limit ControlEnergy Management Points Address Input Output Points AddressControl Parameters Address Status Points AddressMappable User Addresses and Table Number CO2 Concentration Relative TemperatureAir Flow EnthalpyValid states and the corresponding Application reset therefore, these points canPlaced in manual mode through a menu Enumerated values are shownNvName Field Name DefaultInput/Output Points Comments255 NciIoSelect DigitalIn2 NciIoSelect DigitalIn1Occsensor Shcedmasterin Occsensor UnuseddiCOOLSTAGE3 COOLSTAGE1COOLSTAGE2 COOLSTAGE4Sixtyfifty SiinvalidPPM Siinvalid FalseTrue StatusDI3 NvoIO UbDigitalIn EconEnSw NvoIO EconEnableInPosition when poor indoor air quality is detected OccSensr NvoIODefault Comments NvNameControl Parameters MinClRamp NciAux1SetPt UbMinClRampS0 Degrees F/Hr OdEnthalpyEnableMaxClRamp NciAux1SetPt UbMaxClRampS0 Degrees F/Hr MaxClRamp, OdTempMaxClRamp,PPM Gain for the cooling control loop Discharge air temperature cascade control loopGainCoolProp NciAux2SetPt UbKpCoolS2 Degrees F Degrees C GainHeatProp NciAux2SetPt UbKpHeatS2 Degrees F Degrees CEnergy Management Points Auxiliary functions. nviFree1 controls the FREE1OUT Refer to WSHPEnable.valueNviFree1 Value Network variable input failsRefer to nviTimeClk.value NviTimeClk ValueDestTimeClk NviTimeClk State 255 SrcTimeClkCt NvoTimeClk ValueStatus Points Bit Offset = FrostProtectAlrm Alarmbit1Bit Offset = SensorFailAlrm Bit Offset = InvalidSetPtAlrmSmokealarm NoalarmNodedisabled UpdateallfieldsHeat DisabledmodeStartupwait CoolNciAux1SetPts.ubOdEnthalpyEnableS2 StatusEconEn NvoData1 EconEnableAir flow switch is configured StatusManOcc NvoData1 NetManOccCoolStgsOn NvoData1 CoolStagesOn HeatStgsOn NvoData1 HeatStagesOnAuxiliary heating stages are turned on For both heating or coolingController mode is switched to Freezeprotect Is 1, the algorithm controls as per the settings foundNciConfig.SmokeControl MonitorSw NvoData1 MonSwitchSpacetempfield BypasstimerfieldTempcontrolptfield DischargetempfieldUbinvalid NvoError Errorbit0 StatusError NvoError Errorbit0SpaceTempError Bit Offset = Temperature SetPtError NvoError Errorbit0Are disabled as if the sensor was not configured NvoError Errorbit1Bit Offset = RtnEnthalpyError NvoError Errorbit1 Bit Offset = SpaceCO2Error NvoError Errorbit1Bit Offset = NvTodEventError NvoError Errorbit3 Bit Offset = NvWindowError NvoError Errorbit2Bit Offset = NvDlcShedError NvoError Errorbit2 Bit Offset = NvByPassError NvoError Errorbit3Cfgnul CfglocalCfgexternal Calibration PointsConfiguration Parameters False True CascCntrl NciConfig CascadeControl DisMinHtTime NciConfig DisableHeatMinTimeDisMinClTime NciConfig DisableCoolMinTime UseRaTempCtl NciConfigNone Normal Last NETOffset Absolutemiddle BypassonlyLonmark /Open System Points Hvacmrngwrmup Hvacprecool Hvaccool Hvacnightpurge Hvacnul HvacautoHvacheat HvacoffSNVTtempp 14 to 74-2958 100DestRmTemp NviSpaceTemp Degrees F SrcRmTemp NvoSpaceTemp Degrees FHvacauto Hvacnul HvacmrngwrmupHvactest Alarmnotifydisabled 255 Not configured 74-2958 NvoStatus Electricalfault103 NvoStatus Inalarm NvoStatus UnabletomeasureSwon SrcEconEnable NvoEcon State On other nodes. If the economizer function is configured byCorresponding economizer function is not enabled because SrcEconEnCt NvoEcon ValueDirect Access And Special Points OFF Data Share Points = including mapped points and others for Approximate Memory Size Estimating Procedure=using One-to-Many and not using points Mapped points = number of mapped points per ExcelSensor Type Sensor Resistance Versus Temperature Resistance OhmsResistance Sensors Sensor UseT7770B,C 10K ohm setpoint potentiometer Relative Offset Setpoint TemperatureDirect Setpoint Temperature Above and Below Setpoint Resistance OhmsVoltage/Current Sensors Sensor Voltage Versus Humidity Humidity PercentageSensor Voltage Versus Humidity Relative Humidity Percentage Sensor Current Versus Enthalpy volts Enthalpy mA 113 74-2958T7242 or equivalent 74-2958 114MAmAmAmA AmA mA mA Sensor Voltage Versus Input Voltage To A/D Voltage to A/D Inw Sensor Voltage Vdc Versus Pressure InwPressure Inw kPa Sensor Voltage Vdc 50.0.13
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