Honeywell W7750A StatusDI3 NvoIO UbDigitalIn, OccSensr NvoIO, Circuit open, NvoIO ProofAirFlow

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Table 20. Input/Output Points. (Continued)

Value

Digital

E-Vision

Direct

Hardware

Manual

E-Vision Legend: (M) Monitor, (P) Parameter, (S) Schematic

User Address

NvName

Field Name

(Metric) or States plus Range

ofState

Stateor

Default

(M, P,S)

Share

Map

Access

Config.

Config.

Test

Comments

Engineering Units: English

StatusDI3

nvoIO

ubDigitalIn

FALSE

0

FALSE

DigitalIn3 is a byte with a bit for every physical digital input. If the input is

Byte Offset = 25

TRUE

1

shorted to ground, the bit is a zero or FALSE. If the input is open, the bit is

Bit Offset =

one or TRUE.

5(DigitalIn3)

StatusDI4

nvoIO

ubDigitalIn

FALSE

0

FALSE

DigitalIn4 is a byte with a bit for every physical digital input. If the input is

Byte Offset = 25

TRUE

1

shorted to ground, the bit is a zero or FALSE. If the input is open, the bit is

Bit Offset =

one or TRUE.

4(DigitalIn4)

Model

nvoIO

ubDigitalIn

FALSE

0

FALSE

X

ExtenedModelIn is a byte with a bit for every physical digital input. If the

Byte Offset = 25

TRUE

1

input is shorted to ground, the bit is a zero or FALSE. If the input is open,

Bit Offset = 3

the bit is one or TRUE.

(ExtenedModelIn)

OvrdSw

nvoIO

OverRide

FALSE

0

FALSE

OverRide indicates the status of the wall module override pushbutton. It is 1

TRUE

1

(TRUE) if the button is pressed, and is 0 (FALSE) if it isn't pressed.

OccSensr

nvoIO

OccupancySensor

FALSE

0

FALSE

M,

OccupancySensor is the state of the digital input configured and wired to

TRUE

1

S

the local occupancy sensor. 1 means that occupancy is being sensed (input

circuit shorted) and 0 means that no occupancy is being sensed (input

circuit open).

TimeClkSw

nvoIO

OccTimeClock

FALSE

0

FALSE

M,

OccTimeClock is the state of the digital input configured and wired to a time

TRUE

1

S

clock. 1 (input shorted) means that the scheduled occupancy is

OC_OCCUPIED, and 0 (input open circuited) means that the scheduled

occupancy is OC_UNOCCUPIED.

StatusAirFlow

nvoIO

ProofAirFlow

FALSE

0

FALSE

ProofAirFlow is the state of the digital input configured and wired to the

TRUE

1

proof of air flow switch. 1 (input shorted) means that air flow is detected and

0 (input open circuited) means that air flow is not detected.

EconEnSw

nvoIO

EconEnableIn

FALSE

0

FALSE

M,

EconEnableIn is the state of the digital input configured and wired to the

TRUE

1

S

outdoor air sensor that determines the suitably of outdoor air for free

cooling. 1 (input shorted) means that the outdoor air is suitable for cooling,

and 0 (input open) means that the outdoor air in not suitable for cooling.

IaqOvrSw

nvoIO

IaqOverRide

FALSE

0

FALSE

M,

IaqOverRide is the state of the digital input configured and wired to the

TRUE

1

S

indoor air quality sensor. 1 (input shorted) means that the indoor air quality

is poor, and 0 (input open) means that the indoor air quality is acceptable.

This input is used to cause the economizer to open to a predetermined

position when poor indoor air quality is detected.

SmokeMonSw

nvoIO

SmokeMonitor

FALSE

0

FALSE

M,

SmokeMonitor is the state of the digital input configured and wired to the

TRUE

1

S

indoor smoke sensor. 1 (input shorted) means that smoke is detected, and

0 (input open) means that no smoke is detected.

DrtyFilterSw

nvoIO

DirtyFilter

FALSE

0

FALSE

M,

DirtyFilter is the state of the digital input configured and wired to the dirty

TRUE

1

S

filter sensor. 1 (input shorted) means that filter is dirty, and 0 (input open)

means that the filter is not dirty.

ShutDownSw

nvoIO

ShutDown

FALSE

0

FALSE

ShutDown is the state of the digital input configured and wired to the shut

TRUE

1

down switch. 1 (input shorted) means that equipment should be shut down,

and 0 (input open) means that the equipment should be running.

EXCEL 10 W7750A,B,C CONSTANT VOLUME AHU CONTROLLER