Orion System PT-Link II LON - Manual (Page 46)

PT-Link II LON ® Technical Guide
PT-Link II Interface 46
Appendix E - VCM-X LON Parameters
SNVTs for the VCM-X Controller
Binary Output SNVTs are SNVT_lev_disc
all other SNVTs are SNVT_count_inc_f
Parameter Name Object Description Limits
Outdoor
Air CFM
Setpoint
OACfmSt Analog
Input
Minimum desired
Outdoor Air CFM.
0.10
K
200
K
Outdoor Air
CFM Reset
Limit
OACfmRs Analog
Input
Maximum desired
Outdoor Air CFM
when CO
2
reaches
its reset limit.
0.10
K
200
K
Bad Supply
Air Sensor
SaTpAlm Binary
Output Alarm that
indicates a failure
in the
supply air sensor.
CO
2
Sensor
Installed
CO2Cfg Binary
Output Status that
indicates the CO
2
function has been
confi gured.
Cooling
Enabled
ClEnbl Binary
Output
Status that indicates
mechanical cooling
is enabled.
Economizer
Enabled
EcoEnbl Binary
Output Status that indicates
the economizer is
enabled.
Fan Start Up
Delay
FanDly Binary
Output
Status that indicates
the fan is
commanded to run,
but it is in the start
up delay mode.
Fan
Proving
Alarm
PofAlm Binary
Output Alarm that
indicates a failure
in the fl ow of the
VFD blower.
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 deac-
tivate 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.
SNVTs for the VCM-X Controller
Binary Output SNVTs are SNVT_lev_disc
all other SNVTs are SNVT_count_inc_f
Parameter Name Object Description Limits
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.
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.
Mechanical
Heating
Alarm
MchHtAlm Binary
Output Heating Mode has
been initiated but
the Supply Air
Temperature 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
control 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
control 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.