PT-Link II N2-3
®
Technical Guide
PT-Link II N2-3 Interface
38
Appendix E - VCM N2 Parameters
N2 Parameters for the VCM Controller
Parameter
Name
Object
Description
Limits
Bypass
Damper
Position
ByPasDmp
AI: 153
Current position of
the bypass damper
signal.
Return
Damper
Position
RaDmp
AI: 154
Current position of
the return damper
signal.
Outdoor Air
Dew Point
OaDwpt
AI: 47
Current
calculated outdoor
air dewpoint added
on version 1.09.
Current
Supply Air
Setpoint
SaTpStM
AI: 82
SAT/Reset Current
SAT Cooling or
Heating setpoint
if there is no reset
source; Current
calculated SAT
setpoint with Reset
Source.
Coil
Temperature
CoilTp
AI: 181
Current coil
temperature
reading added on
version 1.09.
Preheater
Setpoint
PreHtSp
AO: 196
Low Outside Air
Ambient Protection
Setpoint
0
100
CO
2
Setpoint
CO2St
AO: 149
When the CO
2
level rises above
the CO
2
Protection
Limit Max Level,
the Economizer’s
Minimum Position
will begin to reset
open proportionally
between the CO
2
Protection Limit
Max LevelSetpoint
and the Reset
Range Setpoint.
0
3000
Static
Pressure
Setpoint
DuctPrSt
AO: 152
This is the target
duct pressure to be
maintained by the
VFD blower signal.
0.01
3
Minimum
Outside Air
Setpoint
MinEcoSt
AO: 151
This is the
minimum position
of the economizer
in the occupied
modes.
1
100
Occupied
Mode
Enable
Cooling
Setpoint
OcpClSt
AO: 42
If the control
temperature rises
one degree above
this setpoint,
the control will
activate the cooling
demand. If the
control temperature
is the Supply Air
Sensor, then the
cooling demand is
always active.
0
99
N2 Parameters for the VCM Controller
Parameter
Name
Object
Description
Limits
Occupied
Mode
Enable
Heating
Setpoint
OcpHtSt
AO: 43
If the control tem-
perature drops one
degree below
this setpoint,
the control will
activate the heating
demand. If the
control temperature
is the Supply
Air Sensor, then
there is no heating
demand.
0
99
Outdoor
Air Sensor
Offset
OaTpOst
AO: 53
If the Outdoor
Temperature
Sensor is reading
incorrectly, you can
use this option to
enter an offset
temperature to
adjust the Sensor’s
Temperature.
-100
100
Relief
Pressure
Setpoint
RfPrSt
AO: 118
This is the target
building pressure
to be maintained
by the VFD Relief
signal.
-0.2
0.2
Return
Air Sensor
Offset
RaTpOst
AO: 65
If the Return
Temperature
Sensor is reading
incorrectly, you
can use this option
to enter an offset
temperature to
adjust the Sensor’s
Temperature.
-100
100
Schedule
Force
SchdFrc
AO: 66
0 = Auto/
Unoccupied Mode
1 = Forced On
2 = Forced Off
0
2
Space
Sensor
Offset
SpcTpOst
AO: 71
If the Space
Temperature
Sensor is reading
incorrectly, you can
use this option to
enter an offset
temperature to
adjust the Sensor’s
Temperature.
-100
100
SAT/Reset
Source
Cooling
Setpoint
SaClSt
AO: 77
Supply Air setpoint
or Reset Source
target temperature
in Cooling Mode.
40
80
SAT/Reset
Source
Heating
Setpoint
SaHtSt
AO: 78
Supply Air setpoint
or Reset Source
target temperature
in Heating Mode.
40
200
