Orion System PT-Link II LON - Manual (Page 31)

PT-Link II Interface
PT-Link II LON ® Technical Guide
31
Appendix C - VCB-X LON Parameters
SNVTs for the VCB-X Controller
Binary Output SNVTs are SNVT_lev_disc
all other SNVTs are SNVT_count_inc_f
Parameter Name Object Description Limits
Exhaust Fan
CFM
EtCFM Analog
Output
Current
Exhaust
Airfl ow
Measurement
Exhaust Fan
Speed
EtFnSpd Analog
Output
Current
value of the
VFD relief
fan signal.
Missing
Exhaust CFM
Sensor
ExtCfmSr Binary
Output Indicates that
the Exhaust
CFM Sensor is
not detected.
Missing EM1
Expansion
Module
MisEM1 Binary
Output Indicates that
the EM1 Ex-
pansion Module
is not
communicating
with the VCB-
X Controller.
Fan
Starting Delay
FanDly Analog
Output
Indicates the
current fan
status related
to request to
run, fan starting
delay or POF
failure.
0=No Request
1=Fan
Running
2=Fan Start
Delay
3=POF Failure
Force HVAC
Mode
FrcHvacM Analog
Input
Overrides
normal control-
ler operation in
order to force
the unit into
this desired
mode. Con-
fi guring for
“Auto” will
restore normal
unit control of
the mode of
operation.
0=Auto
1=Vent
2=Cool
3=Heat
4=Vent
Dehum.
5=Cool
Dehum.
6=Heat
Dehum.
Leaving H2O
Offset
LvH2OOst Analog
Input
If the Leaving
Water Tem-
perature Sensor
is reading
incorrectly, use
this to enter an
offset to adjust
the Sensor’s
Temperature.
-100 100
Water Proof of
Flow Failure
H2OProf Binary
Output Indicates no
Proof of Water
Flow.
Head
Pressure
HeadPr Analog
Output
Current value
of the Head
Pressure
Reading.
SNVTs for the VCB-X Controller
Binary Output SNVTs are SNVT_lev_disc
all other SNVTs are SNVT_count_inc_f
Parameter Name Object Description Limits
Head
Pressure
Setpoint
HeadPrSt Analog
Output
Current Head
Pressure
Setpoint.
Head
Pressure
Setpoint in
Cooling Mode
ClHdPrSt Analog
Input
This is the
Head Pressure
Setpoint the
unit will control
to in the
Cooling Mode.
240
PSI
420
PSI
Head
Pressure
Setpoint
in Reheat
Mode
HtHdPrSt Analog
Input
This is the
Head Pressure
Setpoint the
unit will control
to in the De-
humidifi cation
Reheat Mode.
240
PSI
420
PSI
High Head
Pressure
HiHedPr Binary
Output Indicates the
Head Pressure
is too high.
Heating
Enabled
HtEnbl Analog
Output
Status that
indicates that
mechani-
cal heating
is enabled to
operate.
SAT Heating
Low Reset
Source
HtLoRt Analog
Input
If doing Supply
Air Setpoint
Reset, this is
the Low Reset
Source value
in Heating that
will correspond
to the
Supply Air
Heating High
Reset Setpoint.
1 150
SAT Heating
High Reset
Source
HtHiRt Analog
Input
If doing Supply
Air Setpoint
Reset, this is
the High Reset
Source value
in Cooling that
will correspond
to the Supply
Air Cooling
Setpoint (Low
Reset).
1 150
Heating
Setpoint
Mirror
HtSt Analog
Output
Occupied
Heating Mode
Enable
Setpoint.
Revised 7/7/14