PT-Link II N2-3
®
Technical Guide
PT-Link II N2-3 Interface
30
Appendix C - VCM-X N2 Parameters
N2 Properties for the VCM-X Controller
Parameter
Name
Object
Description
Limits
Bad Supply
Air Sensor
SaTpAlm
BI: 2
Alarm that
indicates a failure
in the
supply air sensor.
CO
2
Sensor
Installed
CO2Cfg
BI: 3
Status that
indicates the CO
2
function has been
confi gured.
Cooling
Enabled
ClEnbl
BI: 6
Status that indicates
mechanical cooling
is enabled.
Economizer
Enabled
EcoEnbl
BI: 15
Status that indicates
the economizer is
enabled.
Fan Start Up
Delay
FanDly
BI: 25
Status that indicates
the fan is
commanded to run,
but it is in the start
up delay mode.
Fan
Proving
Alarm
PofAlm
BI: 26
Alarm that
indicates a failure
in the fl ow of the
VFD blower.
Heating
Enabled
HtEnbl
BI: 30
Status that
indicates that
mechanical heating
is enabled.
High
Supply Air
Temperature
Alarm
HiSaAlm
BI: 33
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
BI: 37
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
BI: 39
Status that indicates
the MODGAS II
controller is
connected.
Proof of
Flow
Confi gured
PofCfg
BI: 57
Status that indicates
the proof of fl ow
function has been
confi gured.
REHEAT II
Connected
Rt2Ins
BI: 58
Status that indicates
the MHGRV
controllers is
connected to the
system.
N2 Properties for the VCM-X Controller
Parameter
Name
Object
Description
Limits
Mechanical
Cooling
Alarm
MchClAlm
BI: 94
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
BI: 95
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
BI: 96
Alarm that indicates
the fi lters are dirty.
Control
Temperature
Cool Failure
CtrlTpCF
BI: 108
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
BI: 109
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.
Outdoor Air
Temperature
Lost
OaTpAlm
BI: 117
Alarm that
indicates a failure
in the outdoor air
temperature.
Smoke
Detector
Alarm
SmokeAlm
BI: 119
Alarm that indicates
the Smoke sensor
has been activated.
Space
Temperature
Sensor Lost
SpcTpAlm
BI: 101
Alarm that indicates
a failure in the
space temperature
sensor.
