Honeywell W7752D specifications NV name

Page 39

EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE

NV name

nciApplVer

nciApplVer

nciApplVer

nciApplVer

nciApplVer

nciApplVer

nciDeviceName

nciLocation

nciMaxSendTime

field name

application_type

version_no

time[0]

time[1]

time[2]

time[3] ch[0-17]

Table C2. Configuration Variables for Excel 10 FCU Controllers

engineering units:

digital

 

 

state

default

comments

English (metric) or states

or

plus range

 

 

value

 

 

 

 

 

UBYTE, 0 to 255

 

0

This configuration variable specifies the current application number of

 

 

 

the Excel 10 application.

 

 

 

 

UBYTE, 0 to 255

 

0

This configuration variable specifies the version number of the Excel

 

 

 

10 application.

UBYTE, 0 to 255

 

0

The time stamp of the last change to the Excel 10 application con-

 

 

 

figuration. Time meets the ANSI C time stamp requirement specifying

 

 

 

the number of seconds elapsed since midnight (0:00:00), January 1,

 

 

 

1970. It is represented in the Intel Format and is four bytes in length.

 

 

 

 

UBYTE, 0 to 255

 

0

See above.

 

 

 

 

UBYTE, 0 to 255

 

0

See above.

 

 

 

 

UBYTE, 0 to 255

 

0

See above.

 

 

 

 

UBYTE, 0 to 255

 

0

This configuration variable specifies the name of each device. This is

 

 

 

an ASCII string with the a size of 18 characters. A name with all NULLs

 

 

 

means that the device has not been configured.

SNVT_str_asc

 

0x00

This configuration variable is used to provide more descriptive physical

 

 

 

loacation information than can be provided by the Neuron chip's 6 byte

 

 

 

location string.

 

 

 

 

SNVT_temp_p

 

0 s from factory

This configuration variable specifies the maximum time that expires

0 to 6553 seconds

 

 

before the node object automatically transmits nvoStatus. This pro-

 

 

 

vides a heartbeat output that can be used by the destination objects to

 

 

 

ensure that the node is still healthy. The heartbeat output may be

 

 

 

disabled by setting nciMaxSendTime = 0.

 

 

 

 

37

EN2B-0285GE51 R0909

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Contents Excel Appendix a Using An LNS tool to Commission a Fan Coil Unit Appendix B Configuring for Master/Slave OperationAppendix C LON Interface Revision History Typical system overview Description of DevicesProduct Names Products CoveredOrganization of Manual Applicable LiteratureControl Provided Control ApplicationSetpoint from Network SetpointsSetpoint Knob Setpoint LimitsZEB Bypass Energy-Saving FeaturesOccupancy Status Operating Modes Safety FeaturesElectrical Shock Hazard ConstructionExcel 10 W7752 FCU Controllers Excel 10 W7754 FCU Controllers180 Controller Performance Specifications Configurations GeneralFan Type Type of Heating and Cooling Equipment Digital Input Reheat OutputExcel 10 Wall Module Options Common Temperature Control Master/Slave ControllersAbbreviations and Definitions Step No Description OverviewPlan the System Determine Other Bus Devices RequiredLonworks Layout Lay Out Communications and Power WiringPrepare Wiring Diagrams Power WiringGeneral Considerations Plenum WiringPower Vendor wire typeLOW 230 XAL-Term ONW Orks TerminationEchelon-Based Components and Parts Order EquipmentExcel 10 Wall Modules Excel 10 SensorsUsing Plug-Ins Configure ControllersOutput Input Fan Equipment ControlSwitching Levels Zone OptionsMiscellaneous Commissioning TroubleshootingTroubleshooting Excel 10 FCU Controllers and Wall Modules AlarmsReturntonormal FCU AlarmsManual Mode Broadcasting the Service MessageProcedure Temperature Sensor CalibrationNetwork Variable Binding Output Configuration OptionsInput Configuration Options Zone Control OptionsAppendix C LON Interface Page NV name Continuous Automode To 100% For the reheat output EN2B-0285GE51 R0909 Byte Fiveposition NoswitchByte Ntcnonlinearize NtcnonlinearizedDiairflow Byte DinotusedDiwindowclosed DioccupiedsensorThreestage Byte FloatingOnestage TwostageByte Reheat FreeuseRelnotused Twopipe FourpipeUword Nobutton OffsetAbsolutemiddle BypassunoccupieTable C3. Input Variables for Excel 10 FCU Controllers Ocnul Modeenable UnsuppressalarmsModedisable SuppressalarmsRqnormal Rqupdatestatus Rqupdatealarm Rqreportmask OFF NULInvalid OFF1ON2 Byte NormalhcmodeOFF1OFF2 ON1OFF2Ledoff Ledon Byte NormalfanmodeNowindow ClosedOpen Table C4. Output Variables for Excel 10 FCU Controllers Rtncomfailschedocc RtncomfailtempresetAlarmnotifydisabled RtncomfailsetptoffsAlmcomfailmanheat Almcomfailmancool Almhwswmismatch OFF NotassignedOcbypass Ocstandby Fieldschedocc OFF Nofanspeedsw UbyteFieldeffectocc FieldhwoverrideOcunoccupied Ocbypass Ocstandby Ocnul CtlfanswitchoffCtldisabled Ocunoccupied Ocbypass OcstandbyExternalnotactice Not Actice ActiveFanoffafteroncmd FanrunsStoff StonInvalid Uword Contactopen Contactclosed Uword OFF NoreheatNotpressed PressedInvalid Byte Initial Stlow Stmed SthighInalarm EnabledDisabled NoalarmOpen Nowindow Alarm Suppressalarms AlarmnotifydisabledBugver Nodetype Word Table C5. Unused Variables for Excel 10 FCU ControllersAutomation and Control Solutions

W7752D specifications

The Honeywell W7752D is a versatile and advanced electronic gas combination control designed primarily for use in commercial heating systems. This product stands out for its ability to manage both gas ignition and safety functions, which are critical for maintaining the efficiency and safety of heating appliances. Its robust construction and advanced features make it a popular choice for HVAC professionals and service technicians.

One of the main features of the W7752D is its integration of multiple functions in a single device. It serves as both an automatic gas ignition control and a safety shut-off valve, which simplifies installation and reduces the need for additional components. This integrated design not only enhances reliability but also streamlines maintenance procedures.

Another notable technology utilized in the W7752D is its microprocessor-based control logic. This advanced technology allows for precise management of the ignition sequence, improving the overall efficiency of the heating system. The microprocessor enables the control to adapt to varying operating conditions, ensuring optimal performance even under changing demands.

The W7752D is equipped with features that enhance user-interface and diagnostics capabilities. It includes LED indicators that provide clear information about the operational status and any potential issues. This diagnostics capability facilitates easier troubleshooting, saving time and reducing the likelihood of extended downtimes.

Safety is a primary concern in gas appliances, and the W7752D addresses this with built-in safety mechanisms, including flame detection technologies. These features ensure that the appliance operates safely, automatically shutting down in case of any irregularities during operation. This emphasis on safety not only protects property but also provides peace of mind for users.

In terms of compatibility, the Honeywell W7752D is designed to work with a wide range of gas heating appliances. Its flexibility allows it to be used in various applications, making it suitable for different types of commercial environments. Additionally, the control complies with relevant safety and performance standards, ensuring reliable operation.

In summary, the Honeywell W7752D combines advanced technology with essential safety features, making it a top choice for commercial heating applications. Its integrated design, microprocessor-based control, user-friendly diagnostics, and robust safety mechanisms make it an essential component for efficient and safe gas heating systems. Whether it is for new installations or replacements, the W7752D provides HVAC professionals with the reliability and ease of use they demand.
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