Honeywell W7752D specifications Stoff, Ston, Invalid Uword

Page 61

EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE

NV name

nvoFcuStatus

nvoFcuStatus

nvoFcuStatus

nvoFcuStatus

nvoFcuStatusP

nvoFcuStatusP

nvoFcuStatusP

nvoFcuStatusP

nvoFcuStatusP

nvoFcuStatusP

nvoFcuStatusP

nvoFcuStatusP

nvoFcuStatusP

nvoFcuStatusP

nvoFcuStatusP

nvoFcuStatusP

nvoFcuStatusP

nvoFcuStatusP

field name

reheat_active

active_set_pt

space_temp

rest_bypass_time

field_no

effect_occ hw_override sched_occ eff_sen_occ net_man_occ hw_sen_occ r_o_led mode alarm_type dlc_shed

eff_window_open hw_window_open fan_feedback

Table C4. Output Variables for Excel 10 FCU Controllers.

engineering units:

digital

 

 

state

default

comments

English (metric) or states plus

or

range

 

 

value

 

 

 

 

 

0 to 100%

 

 

 

163.835% = INVALID

 

 

 

SNVT_lev_disc

 

 

This output variable reports the current state of the reheat output,

ST_OFF

0

 

when the controller is configured for one.

ST_ON

4

 

 

ST_NUL (No Reheat)

255

 

 

 

 

 

 

SNVT_temp_p

 

 

This output variable reports the current temperature control point

50 to 95°F (10 to 35°C)

 

 

calculated from the various setpoints, operating modes, and

621.806°F (327.67°C) =

 

 

optimum start-up gradients.

INVALID

 

 

 

 

 

 

 

SNVT_temp_p

 

 

This output variable reports the current space temperature used for

0 to 104°F (0 to 40°C)

 

 

the control algorithm.

621.806°F (327.67°C) =

 

 

 

INVALID

 

 

 

 

 

 

 

UWORD

 

 

This output variable shows the current value in minutes of the

0 to 65535 Min

 

 

active bypass timer

 

 

 

 

Same as nvoFcuStatus.

 

 

This output variable is the same as nvoFcuStatus except not sent

 

 

 

as heartbeat. This variable is sent only in response to a poll

 

 

 

request, typically from a supervisory device.

Same as nvoFcuStatus.

 

 

Same as nvoFcuStatus.

 

 

 

 

Same as nvoFcuStatus.

 

 

Same as nvoFcuStatus.

 

 

 

 

Same as nvoFcuStatus.

 

 

Same as nvoFcuStatus.

Same as nvoFcuStatus.

 

 

Same as nvoFcuStatus.

 

 

 

 

Same as nvoFcuStatus.

 

 

Same as nvoFcuStatus.

 

 

 

 

Same as nvoFcuStatus.

 

 

Same as nvoFcuStatus.

 

 

 

 

Same as nvoFcuStatus.

 

 

Same as nvoFcuStatus.

 

 

 

 

Same as nvoFcuStatus.

 

 

Same as nvoFcuStatus.

 

 

 

 

Same as nvoFcuStatus.

 

 

Same as nvoFcuStatus.

 

 

 

 

Same as nvoFcuStatus.

 

 

Same as nvoFcuStatus.

 

 

 

 

Same as nvoFcuStatus.

 

 

Same as nvoFcuStatus.

 

 

 

 

Same as nvoFcuStatus.

 

 

Same as nvoFcuStatus.

 

 

 

 

Same as nvoFcuStatus

 

 

Same as nvoFcuStatus.

 

 

 

 

 

 

59

EN2B-0285GE51 R0909

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Contents Excel Appendix B Configuring for Master/Slave Operation Appendix a Using An LNS tool to Commission a Fan Coil UnitAppendix C LON Interface Revision History Typical system overview Description of DevicesOrganization of Manual Products CoveredApplicable Literature Product NamesControl Provided Control ApplicationSetpoint Knob SetpointsSetpoint Limits Setpoint from NetworkZEB Bypass Energy-Saving FeaturesOccupancy Status Operating Modes Safety FeaturesExcel 10 W7752 FCU Controllers ConstructionExcel 10 W7754 FCU Controllers Electrical Shock Hazard180 Controller Performance Specifications General ConfigurationsFan Type Type of Heating and Cooling Equipment Digital Input Reheat OutputExcel 10 Wall Module Options Common Temperature Control Master/Slave ControllersAbbreviations and Definitions Plan the System OverviewDetermine Other Bus Devices Required Step No DescriptionLonworks Layout Lay Out Communications and Power WiringPower Wiring Prepare Wiring DiagramsGeneral Considerations Power WiringVendor wire type PlenumLOW 230 XAL-Term ONW Orks TerminationExcel 10 Wall Modules Order EquipmentExcel 10 Sensors Echelon-Based Components and PartsUsing Plug-Ins Configure ControllersOutput Input Fan Equipment ControlZone Options Switching LevelsMiscellaneous Troubleshooting Excel 10 FCU Controllers and Wall Modules TroubleshootingAlarms CommissioningReturntonormal FCU AlarmsManual Mode Broadcasting the Service MessageProcedure Temperature Sensor CalibrationInput Configuration Options Output Configuration OptionsZone Control Options Network Variable BindingAppendix C LON Interface Page NV name Continuous Automode To 100% For the reheat output EN2B-0285GE51 R0909 Byte Ntcnonlinearize NoswitchNtcnonlinearized Byte FivepositionDiwindowclosed Byte DinotusedDioccupiedsensor DiairflowOnestage Byte FloatingTwostage ThreestageFreeuse Byte ReheatRelnotused Twopipe FourpipeUword Absolutemiddle OffsetBypassunoccupie NobuttonTable C3. Input Variables for Excel 10 FCU Controllers Modedisable Modeenable UnsuppressalarmsSuppressalarms OcnulOFF NUL Rqnormal Rqupdatestatus Rqupdatealarm RqreportmaskInvalid OFF1OFF2 Byte NormalhcmodeON1OFF2 OFF1ON2Ledoff Ledon Byte NormalfanmodeClosed NowindowOpen Table C4. Output Variables for Excel 10 FCU Controllers Alarmnotifydisabled RtncomfailtempresetRtncomfailsetptoffs RtncomfailschedoccOFF Notassigned Almcomfailmanheat Almcomfailmancool AlmhwswmismatchOcbypass Ocstandby Fieldeffectocc OFF Nofanspeedsw UbyteFieldhwoverride FieldschedoccCtldisabled CtlfanswitchoffOcunoccupied Ocbypass Ocstandby Ocunoccupied Ocbypass Ocstandby OcnulFanoffafteroncmd Not Actice ActiveFanruns ExternalnotacticeSton StoffInvalid Uword Notpressed OFF NoreheatPressed Contactopen Contactclosed UwordInvalid Byte Initial Stlow Stmed SthighDisabled EnabledNoalarm InalarmOpen 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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