Orion System PT-Link II LON - Manual (Page 29)

PT-Link II Interface
PT-Link II LON ® Technical Guide
29
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
Low Control
Mode Tem-
perature
LoCtrlMd Binary
Output Occurs when
the Control-
ling Sensor
Temperature
falls below the
Heating Mode
Enable Setpoint
minus the Con-
trol Mode Low
Alarm Offset.
Applies only to
Space or Return
Air Tempera-
ture controlled
units.
Cooling Low
Reset Source ClLoRt Analog
Input
If doing Supply
Air Setpoint
Reset, this is
the Low Reset
Source value
in Cooling that
will correspond
to the Supply
Air Cool High
Reset Setpoint.
1 150
Cooling High
Reset Source
ClHiRt 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
Condenser
Control Signal
CdCtrSg1 Analog
Output
Condenser Fan
Signal 1 Status.
Controlling
Sensor High
Alarm Offset
CTpHiAlm Analog
Input
If the tempera-
ture of the con-
trolling sensor
rises above the
Occupied Cool-
ing Setpoint
by this value,
a High Control
Temp Alarm
will occur.
Only applies if
confi gured for
Space or Return
Air Temp
Control, or as
Single Zone
VAV.
0 50
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
Controlling
Sensor Low
Alarm Offset
CTpLoAlm Analog
Input
If the tempera-
ture of the con-
trolling sensor
falls below the
Occupied Heat-
ing Setpoint
by this value,
a Low Control
Temp Alarm
will occur.
Only applies if
confi gured for
Space or Return
Air Temp
Control, or as
Single Zone
VAV.
0 50
Control Status CtrlSts Analog
Output
Current
operational
status.
See Control
Status Bits on
page 38.
Control
Temperature
CtrlTp Analog
Output
Current value
of the control
temperature
sensor.
Cooling
Enabled ClEnbl Analog
Output
Status that
indicates
mechanical
cooling is
enabled.
Mechani-
cal Cooling
Lockout
MchClLkt Analog
Input
The VCB-X
will Lockout
Mechanical
Cooling when
the Outdoor Air
Temperature
is below this
Setpoint.
-30 100
Mechani-
cal Cooling
Alarm
MchClAlm Binary
Output Compressor
Relays are
enabled but
the Supply Air
Temperature has
not fallen 5°F
within a user-
adjustable time
period. This
does not apply
for Modulating
Cooling.
Cooling
Setpoint
Mirror
ClSt Analog
Output
Occupied
Cooling Mode
Enable
Setpoint.
Revised 7/7/14