Orion System PT-Link II LON - Manual (Page 33)

PT-Link II Interface
PT-Link II LON ® Technical Guide
33
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
Modulating
Heating
Position
MdHtPos Analog
Output
Current
position of the
modulating
heating signal
(hot water or
SCR heat).
Missing
MODGAS
Module
MisMDGAS Binary
Output
Alarm that
indicates that
the MODGAS
module is not
communicating
with the VCB-
X Controller.
Morning
Warm-Up
Return Air
Target
Setpoint
WmupTg Analog
Input
If confi gured,
upon entering
the
occupied mode,
the Warm-up
Demand will be
activated if the
return air tem-
perature is one
degree below
this setpoint.
50 90
Occupied
Cooling
Setpoint
OcpClSt Analog
Input
If the control
temperature
rises one degree
above this
setpoint, the
control will ac-
tivate the cool-
ing demand. If
the control
temperature is
the Supply Air
Sensor, then the
cooling demand
is always
active.
1 110
Occupied
Heating
Setpoint
OcpHtSt Analog
Input
If the control
temperature
drops one
degree below
this setpoint,
the control
will activate
the heating
demand. If the
control
temperature
is the Supply
Air Sensor, then
there is no
heating
demand.
1 110
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
Hood On
Outdoor
Air Cooling
Setpoint
OaClSt Analog
Input
This is the
Cooling Mode
Enable
Setpoint used
only in Hood
On Mode.
1 110
Hood On
Outdoor
Air Heating
Setpoint
OaHtSt Analog
Input
This is the
Heating Mode
Enable
Setpoint used
only in Hood
On Mode.
1 110
Outdoor Air
CFM
OaCFM Analog
Output
Current
Outdoor
Airfl ow
Measurement
Minimum
Desired
Outdoor Air
CFM
OACfmMin Analog
Input
Minimum
Outdoor Air-
fl ow
CFM Setpoint
.10K 200K
Missing Out-
door Air CFM
Sensor
OaCfmAlm Binary
Output Indicates
Outdoor Air
CFM Sensor is
not detected.
Outdoor
Humidity
OaRh Analog
Output
Current value
of the Outdoor
Humidity
Sensor.
Outdoor Air
Dewpoint
OaDewPt Analog
Output
Current calcu-
lated Outdoor
Air Dewpoint.
Outdoor Air
Temperature
OaTp Analog
Output
Current value
of the
outdoor
temperature
sensor.
Outdoor Air
Temperature
Offset
OaTpOst Analog
Input
If the Outdoor
Temperature
Sensor is read-
ing
incorrectly, use
this to enter an
offset to adjust
the Sensor’s
Temperature.
-100 100
Minimum
Outside Air
CFM Dead-
band
OacfmDb Analog
Input
The Deadband
is used both
above and
below the
Outdoor Air
CFM setpoint
to help prevent
hunting.
10 1000
Outdoor Air
Temperature
Sensor Lost
OaTpAlm Binary
Output Indicates a
failure of the
Outdoor Air
Temperature
Sensor.
Revised 7/7/14