EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE

NV name

field name

nvoFcuStatus

nvoFcuStatus

alarm_type

 

 

nvoFcuStatus

dlc_shed

 

 

nvoFcuStatus

eff_window_open

 

 

nvoFcuStatus

hw_window_open

 

 

nvoFcuStatus

fan_feedback

 

 

nvoFcuStatus

external_active

 

 

nvoFcuStatus

fan_stages_active

nvoFcuStatus

output_position[0]

nvoFcuStatus output_position[1] EN2B-0285GE51 R0909

Table C4. Output Variables for Excel 10 FCU Controllers.

engineering units:

digital

 

 

state

default

comments

English (metric) or states plus

or

range

 

 

value

 

 

 

 

 

 

 

 

normal operating modes, such as CTL_COOL. When the effective

 

 

 

occupancy changes to unoccupied or 24 hours have elapsed since

 

 

 

the last start-up or CTL_FLOATING_OUT_SYNCH mode, the

 

 

 

controller enters this mode again to reset the floating output

 

 

 

position tracking.

 

 

 

CTL_START_UP_WAIT is the first mode after an application

 

 

 

restart. No control algorithms are active, and heat/cool outputs stay

 

 

 

in their default positions. CTL_FLOATING_OUT_SYNCH follows.

 

 

 

CTL_DISABLED disables heat/cool control.

 

 

 

 

Same as nvoAlarm.type

 

 

This output variable is the latest alarm detected by the node (if

 

 

 

any) and has the same value as nvoAlarm.type.

 

 

 

 

Bit

0

 

This output variable indicates the state of the demand limit control.

NOT ACTICE

 

 

ACTIVE

1

 

 

Bit

 

 

This output variable indicates the real status of the window

CLOSED or NOT_ASSIGNED

0

 

detection, either from the digital input or from the network.

OPEN

1

 

 

 

 

 

 

Bit

 

 

This output variable indicates the status of the digital input

CLOSED or NOT_ASSIGNED

0

 

configured as a window contact.

OPEN

1

 

 

 

 

 

 

Bit

 

 

This output variable indicates the status of the fan when the digital

FAN_OFF_AFTER_ON_CMD

0

 

input is configured for an air flow sensor.

FAN_RUNS

1

 

 

 

 

 

 

Bit

 

 

This output variable applies to nciFcuConfig.reheat_config =

EXTERNAL_NOT_ACTICE

0

 

EXTERNAL only and indicates the state of the relay.

EXTERNAL_ACTIVE

1

 

 

 

 

 

 

UBYTE

 

 

When the controller is configured for one or more fan stages, this

F_OFF

0

 

output variable reports the current fan stage active.

F_SPEED1

1

 

 

F_SPEED2

2

 

 

F_SPEED3

3

 

 

F_NO_FAN

255

 

 

 

 

 

 

SNVT_lev_percent

 

 

This output variable indicates the position of the output 1.

0 to 100%

 

 

 

163.835% = INVALID

 

 

 

 

 

 

 

SNVT_lev_percent

 

 

This output variable indicates the position of the output 2.

 

 

 

 

 

 

58

 

Page 59 Page 61
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Honeywell W7752D specifications Not Actice Active, Fanoffafteroncmd, Fanruns, Externalnotactice, Externalactive Ubyte, Foff
Page 59 Page 61

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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