Honeywell W7750A guide

EXCEL 10 W7750A,B,C CONSTANT VOLUME AHU CONTROLLER

NOTE:

ML6161 FLOATING

ACTUATOR

CW

COM

CCW

LOAD AND

3

CONTROLLER

POWER

HEAT 1

+

24-VAC

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

W1

W2

Y1

Y2

G

NETWORK DO

Rc

Rh

24 VAC

24 VAC COM

NOT USED

W7750A

CONSTANT

VOLUME AHU

CONTROLLER

WALL MODULE

DI GROUND

DI GROUND

EARTH GROUND

LED

BYPASS

SENSOR

AI GROUND

SET PT

AI-1 OHM

AI GROUND

DI- 1

DI- 2

NOT USED

LONWORKS

BUS

LON

JACK

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

J3

2

BUS

TIME CLOCK

1

ORKS-

DISCHARGE

ONW

L

AIR TEMP

Digital outputs are configurable. The terminal locations for each function are user-selectable. The Network DO is configured to be economizer float close in this figure and W2 is configured to be economizer float open. Physical output terminal features are done in E-Vision by the custom wiring function.

	9	8	7	6	5	4	3	2	1	2
	9	8	7	6	5	4	3	2	1	JACK FOR
			LED	BYPASS	SETPT	SENSOR	GND	BUS-E	BUS-E	JACK FOR
			LED	BYPASS	SETPT	SENSOR	GND	BUS-E	BUS-E	LONWORKS-BUS
										LONWORKS-BUS
										NETWORK
										ACCESS
		T7770C
		WALL
		MODULE

1EARTH GROUND WIRE LENGTH SHOULD BE HELD TO A MINIMUM.

USE THE HEAVIEST GAUGE WIRE AVAILABLE, UP TO 14 AWG (2.O MM2) WITH A MINIMUM OF 18 AWG (1.O MM2), FOR EARTH GROUND WIRE.

2TO ASSURE PROPER ELECTRICAL CONTACT, WIRES MUST BE TWISTED TOGETHER BEFORE INSERTION INTO THE TERMINAL BLOCK.

3 LOAD POWER WIRE CAN BE CONNECTED TO TERMINAL 22.

M10083C

Fig. 29. W7750A Controller floating economizer damper wiring diagram. (For more information on note 2, refer to Fig. 25.)

39	74-2958— 1

Image 39

Honeywell W7750A specifications ML6161 Floating Actuator COM CCW Load Controller Power Heat

Contents

Excel General Considerations W7750 Controllers Appendices72-2958 74-2958 List of Figures 74-2958 Setpoint ramping parameters with ramp rate calculation List of Tables Typical system overview Description of Devices Control Provided Control Application Form No Title Products CoveredOrganization of Manual Applicable Literature Agency Listings Product Names Abbreviations and Definitions Controllers Construction DI-1 W7750A Performance Specifications PowerSpecial Note for the W7750B,C Unit Specified Space Temperature Sensing Range CPUMemory Capacity Excel 10 W7750C Constant Volume AHU Controller Jack Lonmark Functional Profile DIN rail adapters Analog Inputs Inputs/Outputs Digital Inputs Triac Outputs on the W7750B,C Models onlyDigital Outputs T7770C Wall ModulesDuct Sensor T7770A1006 T7560A,B construction in in. mm General Configurations Configuration Options Summary For W7750A,B,C Controllers Modulating HEATING/COOLING Control Allowable Heating and Cooling Equipment ConfigurationsStaged HEATING/COOLING Control Heat Pump Control Pneumatic Actuator Control Economizer Control MIXED-OUTPUT-TYPE Control Occupancy SensorWindow Open/Closed Digital Input Wall Module Options Smoke Control Modes of OperationDirty Filter Monitor Indoor Air Quality IAQ Override Assigned OFF ModeDisabled Not Step No Description OverviewPlan the System Determine Other Bus Devices Required Lonworks Bus Layout Lay Out Communications and Power Wiring Excel VAV Cvahu Power Wiring Power Budget Calculation ExampleDeviceVA Information Obtained from Line Loss VA Ratings For Transformer Sizing Device DescriptionML6161A/B Damper Actuator, 35 lb-in R8242A Contactor ML7984B PWM Valve Actuator Nema class 2 transformer voltage output limits Power wiring details for one Excel 10 per Transformer General Considerations Prepare Wiring Diagrams W7750 Controllers Terminal Terminal Number Description Factory Default Digital Outputs Constant 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 Module Brown Orange Order Equipment Lonworks Bus termination wiring options T7770 and T7560 Wall Modules Honeywell Logo T7770D1018Sensor with Bypass/LED and Lonworks Jack Accessories Sensors AccessoriesEchelon Based Components and Parts Cabling Configure ControllersTroubleshooting Troubleshooting Excel 10 Controllers and Wall Modules Alarms Excel 10 AlarmsResistance Value ohms W7750 Controller Status LED Broadcasting the Service Message Sensor Calibration Appendix A. Using E-Vision to Commission a W7750 ControllerSetting the Pid Parameters T7770C,D Wall Module Bypass Pushbutton and Override LED Appendix B. Sequences of Operation Common Operations IAQ Option Room Temperature Sensor RmTempHeating Economizer BypassTime Bypass Mode StatusOvrd and StatusLedRemote Setpoint RmtStptPot Setpoint Limits LoSetptLim and HiSetptLim Bypass Occupied Continuous Unoccupied ModeOccupancy Mode and Manual Override Arbitration Not Assigned Setpoint Ramping Recovery Ramping for Heat Pump SystemsTime Clock OccTimeClock Schedule Master SchedMaster Demand Limit Control DLC Window Sensor StatusWndwSmoke Control FAN Operation Temperature Control Operations See for a diagram of a typical W7750 UnitDirty Filter Monitor Three Stages Staged Cooling ControlONE Stage TWO Stages Outdoor AIR Lockout of HEATING/COOLING Cascade Control of Modulating COOLING/HEATINGSeries 60 Modulating Control Pulse Width Modulating PWM Control Discharge AIR LOW Limit Control Economizer ENABLE/DISABLE ControlIndoor AIR Quality IAQ Override Freeze Stat Status Points Address Input Output Points AddressControl Parameters Address Energy Management Points Address Mappable User Addresses and Table Number Enthalpy Relative TemperatureAir Flow CO2 Concentration Enumerated values are shown Application reset therefore, these points canPlaced in manual mode through a menu Valid states and the corresponding Comments DefaultInput/Output Points NvName Field Name Occsensor Unuseddi NciIoSelect DigitalIn1Occsensor Shcedmasterin 255 NciIoSelect DigitalIn2 COOLSTAGE4 COOLSTAGE1COOLSTAGE2 COOLSTAGE3 Siinvalid Sixtyfifty PPM Siinvalid FalseTrue OccSensr NvoIO EconEnSw NvoIO EconEnableInPosition when poor indoor air quality is detected StatusDI3 NvoIO UbDigitalIn NvName Default Comments Control Parameters MaxClRamp, OdTempMaxClRamp, OdEnthalpyEnableMaxClRamp NciAux1SetPt UbMaxClRampS0 Degrees F/Hr MinClRamp NciAux1SetPt UbMinClRampS0 Degrees F/Hr PPM GainHeatProp NciAux2SetPt UbKpHeatS2 Degrees F Degrees C Discharge air temperature cascade control loopGainCoolProp NciAux2SetPt UbKpCoolS2 Degrees F Degrees C Gain for the cooling control loop Energy Management Points Network variable input fails Refer to WSHPEnable.valueNviFree1 Value Auxiliary functions. nviFree1 controls the FREE1OUT 255 SrcTimeClkCt NvoTimeClk Value NviTimeClk ValueDestTimeClk NviTimeClk State Refer to nviTimeClk.value Status Points Bit Offset = InvalidSetPtAlrm Alarmbit1Bit Offset = SensorFailAlrm Bit Offset = FrostProtectAlrm Updateallfields NoalarmNodedisabled Smokealarm Cool DisabledmodeStartupwait Heat StatusManOcc NvoData1 NetManOcc StatusEconEn NvoData1 EconEnableAir flow switch is configured NciAux1SetPts.ubOdEnthalpyEnableS2 For both heating or cooling HeatStgsOn NvoData1 HeatStagesOnAuxiliary heating stages are turned on CoolStgsOn NvoData1 CoolStagesOn MonitorSw NvoData1 MonSwitch Is 1, the algorithm controls as per the settings foundNciConfig.SmokeControl Controller mode is switched to Freezeprotect Dischargetempfield BypasstimerfieldTempcontrolptfield Spacetempfield Ubinvalid Bit Offset = Temperature SetPtError NvoError Errorbit0 StatusError NvoError Errorbit0SpaceTempError NvoError Errorbit0 Bit Offset = SpaceCO2Error NvoError Errorbit1 NvoError Errorbit1Bit Offset = RtnEnthalpyError NvoError Errorbit1 Are disabled as if the sensor was not configured Bit Offset = NvByPassError NvoError Errorbit3 Bit Offset = NvWindowError NvoError Errorbit2Bit Offset = NvDlcShedError NvoError Errorbit2 Bit Offset = NvTodEventError NvoError Errorbit3 Calibration Points CfglocalCfgexternal Cfgnul Configuration Parameters False True UseRaTempCtl NciConfig DisMinHtTime NciConfig DisableHeatMinTimeDisMinClTime NciConfig DisableCoolMinTime CascCntrl NciConfig CascadeControl Bypassonly Last NETOffset Absolutemiddle None Normal Lonmark /Open System Points Hvacoff HvacautoHvacheat Hvacmrngwrmup Hvacprecool Hvaccool Hvacnightpurge Hvacnul SrcRmTemp NvoSpaceTemp Degrees F 74-2958 100DestRmTemp NviSpaceTemp Degrees F SNVTtempp 14 to Hvacauto Hvacnul HvacmrngwrmupHvactest Alarmnotifydisabled NvoStatus Unabletomeasure NvoStatus Electricalfault103 NvoStatus Inalarm 255 Not configured 74-2958 Swon SrcEconEnCt NvoEcon Value On other nodes. If the economizer function is configured byCorresponding economizer function is not enabled because SrcEconEnable NvoEcon State Direct 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 for Sensor Use Sensor Resistance Versus Temperature Resistance OhmsResistance Sensors Sensor Type Above and Below Setpoint Resistance Ohms Offset Setpoint TemperatureDirect Setpoint Temperature T7770B,C 10K ohm setpoint potentiometer Relative Voltage/Current Sensors Sensor Voltage Versus Humidity Humidity PercentageSensor Voltage Versus Humidity Relative Humidity Percentage 113 74-2958 Sensor Current Versus Enthalpy volts Enthalpy mA T7242 or equivalent 74-2958 114MAmAmAmA 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