Orion System PT-Link II BACnet3 - Manual (Page 33)

PT-Link II BACnet3 Interface
7. PARAMETER TABLES
33
7.1 VCB-X BACnet Parameters
BACnet Properties for the VCB-X Controller
Param-
eter
Name Object Description Limits
Low Coil
Tem-
perature
Setpoint
Limit
LoClTpSt AV:295 This is the low-
est that the Coil
Temperature will
be reset to during
Space Humid-
ity Reset of the
Coil Suction
Temperature
Setpoint. If no
coil temperature
reset is required,
this value should
be set the same
as the High Coil
Temperature
Setpoint.
35 70
High Coil
Tem-
perature
Setpoint
Limit
HiClTpSt AV:296 This is the high-
est that the Coil
Temperature will
be reset to during
Space Humid-
ity Reset of the
Coil Suction
Temperature
Setpoint. If no
coil temperature
reset is required,
this value should
be set the same
as the Low Coil
Temperature
Setpoint.
35 70
Com-
pressor
Discharge
Tempera-
ture
DschgTp AI: 331 Current value of
the Compressor
Discharge Tem-
perature Sensor.
Bad Com-
pressor
Discharge
Sensor
DschgAlm BI: 369 Failure of the
Digital Compres-
sor Discharge
Temperature
Sensor.
Control
Mode
CtrlMod AI: 97 1=Constant
Volume
2=Supply Air
Cooling Only
3=Outdoor
Temp Control
4=Single Zone
VAV
5=Supply Air
Tempering
6=Space Temp
Control w/
High OA
Content
Unoccupied
BACnet Properties for the VCB-X Controller
Param-
eter
Name Object Description Limits
Control
Tem-
perature
Cooling
Failure
CtrlTpCF BI: 108 Activated if the
control tempera-
ture does not get
within 5°F to the
occupied cooling
setpoint in an
hour in the cool-
ing mode. This
alarm is not used
in 100% outside
air units or sup-
ply air control.
Control
Tem-
perature
Heating
Failure
CtrlTpHF BI: 109 Activated if the
control tempera-
ture does not get
within 5°F to the
occupied heating
setpoint in an
hour in the heat-
ing mode. This
alarm is not used
in 100% outside
air units or sup-
ply air control.
High
Control
Mode
Tempera-
ture
HiCtrlMd BI: 377 Occurs when the
Controlling Sen-
sor Temperature
rises above the
Cooling Mode
Enable Setpoint
plus the Control
Mode High
Alarm Offset.
Applies only to
Space or Return
Air Temperature
controlled units.
Low Con-
trol Mode
Tempera-
ture
LoCtrlMd BI: 378 Occurs when the
Controlling Sen-
sor Temperature
falls below the
Heating Mode
Enable Setpoint
minus the Con-
trol Mode Low
Alarm Offset.
Applies only to
Space or Return
Air Temperature
controlled units.
Cooling
Low Reset
Source
ClLoRt AV: 326 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.
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