Honeywell W7761A specifications Overview, Plan The System, Application Steps Step No Description

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EXCEL 10 W7761A INPUT/OUTPUT DEVICE

APPLICATION STEPS

Overview

The seven application steps shown in Table 3 are planning considerations for engineering an Excel 10 W7761 Remote Input/Output Device. These steps are guidelines intended to aid understanding of the product I/O options, bus arrangement choices and the Excel 10 W7761A Devices role in the overall EXCEL 5000® System architecture.

Table 3 . Application Steps.

Step No.

Description

 

 

1

Plan The System

 

 

2

Determine Other Bus Devices Required

 

 

3

Lay Out Communication and Power Wiring

 

 

4

Prepare Wiring Diagrams

 

 

5

Order Equipment

 

 

6

Configure Devices

 

 

7

Troubleshooting

 

 

Step 1. Plan The System

Plan the use of the W7761A Devices according to the job requirements. Determine the location, functionality and sensor or actuator usage. Verify the sales estimate of the number of W7761A Devices and the number and type of output actuators and other required accessories.

When planning the system layout, consider potential expansion possibilities to allow for future growth. Planning is very

important to be prepared for adding HVAC systems and controllers in future projects.

terminal to have access to the E-Bus. The application engineer needs to determine how many wall modules or other input sensors are required. This information is required during installation to ensure that the proper number and type of wires are pulled to the wall modules, and the building operators are informed about where they can plug in to the E-Bus network with a portable127(%22operator.3&terminal '(9,&(:(;&(/see￿￿￿￿Fig&,176+,/'('$￿￿$%/(. 5)through$&(10).

T7770A,B,C,D Wall Modules,1387(sensor￿287387—current feature that can be used with the RIO Device)can be installed as either hardwired I/O-only devices or additional wiring can be run to them (for the E-Bus network ) to allow a CARE/E-Vision operator

566(,327￿￿￿￿$&%/(312/$57￿￿￿￿￿￿￿46/7￿￿￿￿$$(3257￿%860￿￿￿￿￿-'

Fig. 8. Connecting the portable operator terminal to the E-Bus.

The FTT communication loop, (E-Bus) between controllers is a free topology wiring scheme that supports star, loop, and/or bus wiring. Refer to the E-Bus Wiring Guidelines form, 74-2865 for complete description of network topology rules. See Application Step 3. Lay Out Communications and Power Wiring, for more information on bus wiring layout, and see Fig. 16 through 19 in Application Step 4. Prepare Wiring Diagrams, for wiring details.

The application engineer must review the Direct Digital Control (DDC) job requirements. This includes the Sequences of Operation for the Excel 10 controllers, and for the system as a whole. Usually there are variables that must be passed between the W7750 (CVAHU), Q7750A Zone Manager, W7761 (RIO), and other Excel 10 controller(s), or central plant controller(s) that are required for optimum system-wide operation. Typical examples are the TOD Occ/Unocc signal, the outdoor air temperature, demand limit control signal, and smoke control mode signal.

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Contents Excel 10 W7761A Remote Input/Output Device Appendices List of TablesTypical system overview Description of DevicesControl Provided Control ApplicationProducts Covered Organization of ManualProduct Names Abbreviations and Definitions Agency ListingsExcel 10 W7761A INPUT/OUTPUT Device Controllers ConstructionExcel 10 W7761A Remote I/O Device W7761A construction in in. mm List Of Available Points W7761A Performance Specifications PowerEnvironmental Operating Temperature Specified Space Temperature Sensing RangeShipping Temperature Memory CapacityOutdoor Air Temperature Discharge Air TemperatureReturn Air Temperature Mixed Air Temperature5585 Wall ModulesT7780 construction, subbase dimensions in in. mm ConfigurationsOccupancy Sensor Mixed-Output-Type ControlWindow Open/Closed Digital Input Wall Module OptionsApplication Steps Step No Description OverviewPlan The System Bus Layout Lay Out Communications and Power WiringDetermine Other Bus Devices Required 750,1$ Power Budget Calculation Example Power WiringLine Loss VA Ratings For Transformer Sizing Device DescriptionNema class 2 transformer voltage output limits VA RatingLine VOLTAGE` GREATER` Than 150 VAC W7761A Devices Prepare Wiring DiagramsGeneral Considerations Terminal Number Description W7761A I/O DescriptionTemperature Sensor DE V IC E Window Contact Contact Closed = Occupancy Sensor Occupied Valve Actuator Typical Pneumatic transducer Series 60 Floating to W7761A Bus Termination ModuleSee for E-Bus termination wiring options +$672 Excel 10 W7750 Controllers Order EquipmentT7770 Wall Modules SensorsEchelon Based Components and Parts AccessoriesCabling Temperature Degrees W7761A Device Status LED Broadcasting the Service MessageExcel 10 Alarms LED States T7780 Ddwm Bypass PushbuttonAdding Analog Inputs Enthalpy 4 to 20 mA Appendix A. Using E-Vision to Commission a W7761 DeviceAdding Other VOLTAGE/CURRENT Sensors Adding Digital Inputs Common Operations Room Temperature Sensor RmTempAppendix B. Sequences of Operation Dirty Filter Monitor Window Sensor StatusWndwSeries 60 Modulating Control Pulse Width Modulating PWM ControlRelative Temperature Relative HumidityAir Flow CO 2 ConcentrationTable C1. Input/Output Points Left DefaultTable C1. Input/Output Points Right Excel 10 W7761A INPUT/OUTPUT Device Values that can be assigned to any output channels English Metric or User Address DI3Sel1Type Refer to the description for DI1Sel1Type Stoff Stnul Stlow Stmed Sthigh Ston DO2Type Excel 10 W7761A INPUT/OUTPUT Device SrcDigIn2Sts Refer to the description for SrcDigIn1Sts Table C2. Control Parameters Left SH MA DA EV HW MN TS Table C2. Control Parameters RightTable C3. Status Points Left NoalarmTable C3. Status Points Right RIO1 Software version NvoStatus InOverride SH MA DA EV HW MN TS Table C4. Configuration Parameters Left Table C4. Configuration Parameters Right DO0 Higher than the value specified for AILowLimit DO4 Seconds = 25.6 seconds DO6PWMPeriod Refer to the description for DO1PWMPeriod Table C5. Direct Access And Special Points Right Table C5. Direct Access And Special Points LeftFig. D-1. Point capacity estimate for Zone Manager Approximate Memory Size Estimating ProcedureResistance Sensors Appendix E. Sensor Data for CalibrationSensor Type Sensor Use1956.79 Humidity Percentage Sensor Voltage Voltage/Current SensorsTable E-4. Sensor Voltage Versus Humidity C7600C1008 4 to 20 mA C7600C output current vs. humidity Sensor Type Fig. E-6. Graph of Sensor Current versus Enthalpy volts Table E-10. Sensor Voltage Versus Input Voltage To A/D Table E-9. Sensor Voltage Versus CO 2 ConcentrationCO 2 Concentration PPM Sensor Voltage Pressure Inw kPa Sensor Voltage Vdc Voltage to A/D Sensor VoltageTable E-11. Sensor Voltage Vdc Versus Pressure Inw 3ODD
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