Orion System PT-Link II LON - Manual (Page 35)

PT-Link II Interface
PT-Link II LON ® Technical Guide
35
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
Static
Pressure
Setpoint
Deadband
DuctPrDb Analog
Input
Value above
and below the
Duct Static
Pressure Set-
point where no
control change
occurs.
Suction Pres-
sure
SucPr Analog
Output
Current Suction
Pressure value.
High Suction
Pressure
Alarm
HiSucPr Binary
Output Indicates
Suction Pres-
sure is above
the High Suc-
tion Pressure
Cooling (Heat-
ing) Setpoint.
Low Suction
Pressure
Alarm
LoSucPr Binary
Output Indicates
Suction Pres-
sure is below
the Low Suc-
tion Pressure
Cooling (Heat-
ing) Setpoint.
Supply Air
CFM
SaCFM Analog
Output
Current Supply
Airfl ow
Measurement.
High Supply
Air Tempera-
ture Alarm
HiSaAlm Binary
Output The Supply Air
has risen above
the High SAT
Cutoff Setpoint.
Heating stages
begin to deacti-
vate and the fan
continues to run.
Low Supply
Air Tempera-
ture Alarm
LoSaAlm Binary
Output The Supply Air
has fallen below
the Low SAT
Cutoff Setpoint
and cooling
stages will begin
to deactivate.
If the unit is in
Economizer,
Vent, or Heat-
ing Mode the
Supply Fan will
shut off.
Supply Air
Cooling
Setpoint
SaClSt Analog
Input
Supply Air
Cooling Set-
point. If Supply
Air Reset is
confi gured, this
is the Low SAT
Cooling Reset
Value.
30 80
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
Supply Air
Heating
Setpoint
SaHtSt Analog
Input
Supply Air
Heating Set-
point. If Supply
Air Reset is
confi gured, this
is the Low SAT
Heating Reset
Value.
40 240
Supply Air
Cool High
Reset
SaClRt Analog
Input
If Supply
Air Reset is
confi gured, this
is the High SAT
Cooling Reset
Value.
0 100
Supply Air
Heat High
Reset
SaHtRt Analog
Input
If Supply
Air Reset is
confi gured, this
is the High SAT
Heating Reset
Value.
0 250
Supply Air
Temperature
SaTp Analog
Output
Current value
of the
supply air
temperature
sensor.
Bad Supply
Air Tempera-
ture Sensor
SaTpAlm Binary
Output Indicates a
failure of the
Supply Air
Temperature
Sensor.
Low Supply
Air Temp
Cutoff
LoSaCf Analog
Input
Cooling will
be disabled if
the Supply Air
Temperature
falls below
this value. See
sequence for
more details.
0 100
High Supply
Air Temp
Cutoff
HiSaCf Analog
Input
Heating will
be disabled if
the Supply Air
Temperature
rises above
this value. See
sequence for
more details.
0 250
Supply Air
Temperature
Offset
SaTpOst Analog
Input
If the Supply
Air
Temperature
Sensor is read-
ing incorrectly,
you can use this
option to enter
an offset
temperature to
adjust the
Sensor’s
Temperature.
-100 100
Revised 7/7/14