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EXCEL 10 W7750A,B,C CONSTANT VOLUME AHU CONTROLLER
87 74-2958—1
StatusIaqOvr nvoData1
(nvoCtlDataG1)
IaqOverRide FALSE
TRUE
0
1
FALSE X IaqOverRide: When an economizer is configured, IaqOverRide indicates
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
(nvoCtlDataG1)
SmokeMonitor FALSE
TRUE
0
1
FALSE X SmokeMonitor: SmokeMonitor indicates the current state of the
SmokeMonitor input used by the control process and is read from another
node via nviEmerg or the local sensor via nvoIO.SmokeMonitor. If either
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
(nvoCtlDataG1)
WindowOpen FALSE
TRUE
0
1
FALSE X WindowOpen: WindowOpen indicates the current state of the window
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
(nvoCtlDataG1)
DirtyFilter FALSE
TRUE
0
1
FALSE X DirtyFilter: DirtyFilter indicates the state of the air filter via the
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
(nvoCtlDataG1)
ShutDown FALSE
TRUE
0
1
FALSE X ShutDown: ShutDown indicates the state of the ShutDown input via
nvoIO.ShutDown. 1 means a ShutDown is being commanded and 0 means
normal operation.
StatFreezeStat nvoData1
(nvoCtlDataG1)
CoilFreezeStat FALSE
TRUE
0
1
FALSE M X X StatFreezeStat: StatFreezeStat gives the state of the cooling coil controlled
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.
MonitorSw nvoData1
(nvoCtlDataG1)
MonSwitch FALSE
TRUE
0
1
FALSE X MonSwitch: MonSwitch is the state of the digital input wired to a general
purpose monitor switch via nvoIO.MonSwitch. 1 means that the switch is
closed and 0 means that the switch is open.
Table 23. Status Points. (Continued)
User Address NvName Field Name
Engineering Units: English
(Metric) or States plus Range
Digital State or
Value of State
Default
E-Vision (M, P, S)
Share
Map
Direct Access
Hardware Config.
Manual Config.
Test
E-Vision Legend: (M) Monitor, (P) Parameter, (S) Schematic
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