Orion System PT-Link II BACnet3 - Manual (Page 40)

Zone
Zone
7. PARAMETER TABLES
PT-Link II BACnet3 Interface 40
BACnet Properties for the VCB-X Controller
Param-
eter
Name Object Description Limits
Supply Air
Tempera-
ture Offset
SaTpOst AV:80 If the Supply Air
Temperature
Sensor is reading
incorrectly, use
this offset to ad-
just the Sensor’s
Temperature.
-100 100
Current
Supply Air
Tem-
perature
Setpoint
SaTpStM AI: 82 Current SAT
Cooling or
Heating
setpoint if there
is no reset
source;
Current cal-
culated SAT
setpoint with
Reset Source.
Cooldown
Mode
Supply Air
Setpoint
SaCldnSt AV: 362 Cooling will be
controlled to
this Supply Air
Setpoint during
Cool-Down.
30 80
Missing
Supply
Air CFM
Sensor
SaCfmSr BI: 372 Indicates the
Supply Air CFM
Sensor is not
detected.
Warmup
Mode
Supply Air
Setpoint
SaWmupSt AV: 361 Heating will be
controlled to
this Supply Air
Setpoint during
Morning Warm-
Up.
40 240
SZ VAV
Integral
Constant
SZVAVFnl AV: 360 This is the
Integral Constant
for controlling
the SZ VAV Fan
Speed.
0 10
Title 24
Econo-
mizer
Feedback
T24EcFb AI: 384 Current position
of feedback from
Economizer
actuator.
Title 24
Sensor
Alarm
T24TpAlm BI: 385 Outside Air
or Supply Air
Temperature
Sensor is shorted
or missing.
Title
24 Not
Economiz-
ing When
It Should
T24NEWS BI: 386 Economizer is
enabled but not
following the
desired Econo-
mizer position
commanded.
Title 24
Economiz-
ing When
It Should
Not
T24EWISN BI: 387 Economizer is
not enabled but
the feedback
signal indicates
a position more
open than the
minimum.
BACnet Properties for the VCB-X Controller
Param-
eter
Name Object Description Limits
Title 24
Damper
Failure
T24DpAlm BI: 388 Economizer is
enabled but not
within 10% of
desired position
within 150
seconds.
Title 24
Excess
Outdoor
Air
T24ExsOA BI: 389 Economizer
feedback is lost
or Economizer
is not follow-
ing commanded
position.
Unoc-
cupied
Cooling
Offset
UnClOst AV: 124 In Unoccupied
Mode, this
offsets the
Occupied Cool-
ing Setpoint by
this user adjust-
able amount. If
no Unoccupied
Cooling is
desired, use the
default setting
of 30°F for this
setpoint.
0 30
Unoc-
cupied
Heating
Offset
UnHtOst AV:125 In Unoccupied
Mode, this
offsets the
Occupied Heat-
ing Setpoint by
this user adjust-
able amount. If
no Unoccupied
Heating is
desired, use the
default setting
of 30°F for this
setpoint.
0 30
VFD
Position
VfdBwPos AI:88 Current
position of the
VFD blower fan
signal.
VFD Min
Position in
Cool Mode
VFDClMin AV: 319 In Single Zone
VAV confi gura-
tion, this is the
fan speed at
which the VFD
will start when
Cooling is
initiated. In a
VAV confi gura-
tion this is the
lowest fan speed
allowed in the
Cooling Mode.
In CAV and
MUA confi gura-
tions this should
be set to 100%.
0% 100%
7.1 VCB-X BACnet Parameters