Orion System PT-Link-LON - Manual (Page 34)

PT-Link-LON ® Technical Guide
PT-Link Interface 34
Appendix F - VCM LON Parameters
SNVTs for the VCM Controller
Binary Output SNVTs are SNVT_lev_disc
All other SNVTs are SNVT_count_inc_f
Parameter Name Object Description Limits
Coil
Temperature
Setpoint
CoilTpSt Analog
Input
This is the coil
suction temperature
during
dehumidifi cation
mode. Produces
dewpoint in the
supply air
approximately
10°F above this
setpoint.
35 70
Heating
Enabled
HtEnbl Binary
Output Status that
indicates that
mechanical heating
is enabled.
High
Supply Air
Temperature
Alarm
HiSaAlm Binary
Output The Supply Air
has risen above
the Hi SAT Cutoff
Setpoint. Heating
stages begin to de-
activate and the fan
continues to run.
Low
Supply Air
Temperature
Alarm
LoSaAlm Binary
Output The Supply Air has
fallen below the Hi
SAT Cutoff Setpoint
and cooling stages
will begin to deacti-
vate. If the unit is in
Economizer, Vent,
or Heating Mode
the Supply Fan will
shut off.
MODGAS
II
Connected
MdHt2Ins Binary
Output Status that indicates
the MODGAS II
controller is
connected.
Proof of
Flow
Confi gured
PofCfg Binary
Output Status that indicates
the proof of fl ow
function has been
confi gured.
REHEAT II
Connected
Rt2Ins Binary
Output Status that indicates
the MHGRV
controllers is
connected to the
system.
Warm Up
Mode
Active
WmupDmnd Binary
Output
Status that indicates
the control is in the
Warm-up mode.
Mechanical
Cooling
Alarm
MchClAlm Binary
Output Compressor Relays
are enabled but
the Supply Air
Temperature has
not fallen 5°F w/in
a user-adjustable
time period. This
does not indicate
compressors are
active and will not
shut the unit down.
SNVTs for the VCM Controller
Binary Output SNVTs are SNVT_lev_disc
All other SNVTs are SNVT_count_inc_f
Parameter Name Object Description Limits
Mechanical
Heating
Alarm
MchHtAlm Binary
Output Heating Mode has
been initiated but the
Supply Air Tempera-
ture has not risen 5°F
w/in a user-adjustable
time period. This
does not indicate heat
stages are active and
will not shut the unit
down.
Dirty Filter
Detected
DrtFlAlm Binary
Output Alarm that indicates
the fi lters are dirty.
Control
Temperature
Cool Failure
CtrlTpCF Binary
Output This alarm is
activated if the con-
trol temperature does
not get within 5°F to
the occupied cooling
setpoint in an hour
in the cooling mode.
This alarm is not
used in 100% outside
air units or supply air
control.
Control
Temperature
Heat Failure
CtrlTpHF Binary
Output This alarm is
activated if the con-
trol temperature does
not get within 5°F to
the occupied heating
setpoint in an hour
in the heating mode.
This alarm is not
used in 100% outside
air units or supply air
control.
Dehu-
midifi cation
Demand
DehmDmnd Binary
Output Status that indicates
a demand for
dehumidifi cation.
Outdoor Air
Temperature
Lost
OaTpAlm Binary
Output Alarm that indicates a
failure in the outdoor
air temperature.
Smoke
Detected
Alarm
SmokeAlm Binary
Output Alarm that indicates
the Smoke sensor has
been activated.
Space
Temperature
Sensor Lost
SpcTpAlm Binary
Output Alarm that indicates
a failure in the space
temperature sensor.
On Board
Relay 1
OnRly1 Binary
Output Current status of
relay 1.
On Board
Relay 2
OnRly2 Binary
Output Current status of
relay 2.
On Board
Relay 3
OnRly3 Binary
Output Current status of
relay 3.
On Board
Relay 4
OnRly4 Binary
Output Current status of
relay 4.
On Board
Relay 5
OnRly5 Binary
Output Current status of
relay 5.