Honeywell W7750A StatusIaqOvr NvoData1 IaqOverRide, NciAux1SetPts.ubEconIaqPosS0, instead

Table 23. Status 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

StatusIaqOvr

nvoData1

IaqOverRide

FALSE

0

FALSE

X

IaqOverRide: When an economizer is configured, IaqOverRide indicates

(nvoCtlDataG1)

TRUE

1

the current state of the indoor air quality, an is used by the control process

to open the economizer damper to let in more outside air. 1 means poor

indoor air quality, and 0 means indoor air quality is OK. When IaqOverRide

is 1, the IAQ_OVERRIDE alarm is initiated. IaqOverRide indicates poor air

quality if the analog sensor OR a digital sensor (local or via network) shows

poor air quality. Specifically, if nvoData2.siSpaceCo2S0 is not SI_INVALID,

and exceeds nciAux1SetPt.siCO2IaqLimitS0, then poor air quality is

detected. Also if nviIaqOvr.state is SW_ON, then poor air quality is

detected. Or if a local digital input is configured as IAQ_OVERRIDE_IN and

nvoIO.IaqOverRide is 1 then poor air quality is also detected. When poor air

quality is detected, the economizer minimum position is set to

nciAux1SetPts.ubEconIaqPosS0, instead of

nciAux1SetPts.ubEconMinPosS0.When an economizer is not configured,

IaqOverRide is 0.

StatusSmoke

nvoData1

SmokeMonitor

FALSE

0

FALSE

X

SmokeMonitor: SmokeMonitor indicates the current state of the

(nvoCtlDataG1)

TRUE

1

SmokeMonitor input used by the control process and is read from another

node via nviEmerg or the local sensor via nvoIO.SmokeMonitor. If either

87

nviEmerg is not EMERG_NORMAL or nvoIO.SmokeMonitor is 1, then

SmokeMonitor is 1 meaning that smoke is detected. Otherwise

SmokeMonitor is 0, meaning smoke is not detected. When smoke monitor

is 1, the algorithm controls as per the settings found in

nciConfig.SmokeControl.

StatusWndw

nvoData1

WindowOpen

FALSE

0

FALSE

X

WindowOpen: WindowOpen indicates the current state of the window

(nvoCtlDataG1)

TRUE

1

sensors and is calculated from nviWindow state and the local occupancy

sensor via nvoIO.WindowOpen. The local sensor and nviWindow are ORed

together. If either the local sensor or nviWindow shows that the window is

open (nvoIO.WindowOpen = 1 or nviWindow.state = SW_ON), then

WindowOpen shows that the window is open. 1 means that the window is

open and 0 means that the window is closed. When the window is open, the

controller mode is switched to FREEZE_PROTECT.

StatusFilter

nvoData1

DirtyFilter

FALSE

0

FALSE

X

DirtyFilter: DirtyFilter indicates the state of the air filter via the

(nvoCtlDataG1)

TRUE

1

nvoIO.DirtyFilter digital input or the nvoData1.siFilterPressureS10 analog

input. If nvoData1.siFilterPressureS10 exceeds

nciAux2SetPt.ubFilterPressStPtS5, a dirty filter is indicated. DirtyFilter is set

to 1 when a dirty filter has been detected by either method for one minute.

DirtyFilter is set to 0 when a dirty filter has not been detected by either

method for one minute. When DirtyFilter is 1, a DIRTY_FILTER alarm is

generated.

ShutDown

nvoData1

ShutDown

FALSE

0

FALSE

X

ShutDown: ShutDown indicates the state of the ShutDown input via

(nvoCtlDataG1)

TRUE

1

nvoIO.ShutDown. 1 means a ShutDown is being commanded and 0 means

normal operation.

StatFreezeStat

nvoData1

CoilFreezeStat

FALSE

0

FALSE

M

X

X

StatFreezeStat: StatFreezeStat gives the state of the cooling coil controlled

(nvoCtlDataG1)

TRUE

1

by the CVAHU. False (0) it is not freezing or True (1) it is freezing.

NOTE: Only use this User Address when using E-Vision.

74

MonitorSw

nvoData1

MonSwitch

FALSE

0

FALSE

X

MonSwitch: MonSwitch is the state of the digital input wired to a general

-

(nvoCtlDataG1)

TRUE

1

purpose monitor switch via nvoIO.MonSwitch. 1 means that the switch is

2958—1

closed and 0 means that the switch is open.

EXCEL 10 W7750A,B,C CONSTANT VOLUME AHU CONTROLLER