Orion System PT-Link II LON - Manual (Page 42)

PT-Link II LON ® Technical Guide
PT-Link II Interface 42
SNVTs for the VCM-X WSHP (Coil)
Binary Output SNVTs are SNVT_lev_disc
all other SNVTs are SNVT_count_inc_f
Parameter Name Object Description Limits
Modulating
Compressor 2
MdCmp2 Analog
Output
Current position
of the
2nd Stage of Com-
pressor Modula-
tion.
Head Pres-
sure 1
HdPr1 Analog
Output
Head Pressure for
1st Compressor
Head Pres-
sure 2
HdPr2 Analog
Output
Head Pressure for
2nd Compressor
Condenser
Fan 1
CdFan1 Analog
Output
Condenser Fan 1
Signal Status
Condenser
Fan 2
CdFan2 Analog
Output
Condenser Fan 2
Signal Status
Water Temp. A WaterTpA Analog
Output
Current water
temperature.
Remote VFD
Reset
RmVFDPos Analog
Input
Remote VFD
Position Reset
-1 100
Compressor A
Low Suction
Pressure
Alarm
A1LSPAlm Binary
Output Alarm that indi-
cates
Suction Pressure
for Circuit A is
below the Low
Suction Pressure
Cooling (Heating)
Setpoint.
Compressor A
Lockout
Alarm
A1LktAlm Binary
Output Alarm that indi-
cates Circuit A
Compressors are
locked out.
Compressor B
Low Suction
Pressure
Alarm
B1LSPAlm Binary
Output Alarm that indi-
cates
Suction Pressure
for Circuit B is
below the Low
Suction Pressure
Cooling (Heating)
Setpoint.
Compressor B
Lockout
Alarm
B1LktAlm Binary
Output Alarm that indi-
cates Circuit B
Compressors are
locked out.
Low Water
Temperature
Alarm
LWT1Alm Binary
Output Alarm that
indicates water
temperature is
below the Leaving
Water Safety
Setpoint (Heating
only).
SNVTs for the VCM-X WSHP (Coil)
Binary Output SNVTs are SNVT_lev_disc
all other SNVTs are SNVT_count_inc_f
Parameter Name Object Description Limits
Proof of Water
Flow Alarm
POWF1Alm Binary
Output Alarm that indi-
cates no
Proof of Water
Flow.
Module
Communica-
tions
Alarm
ComMAlm Binary
Output Alarm that
indicates that one
or more Modules
are not commu-
nicating with the
VCM-X WSHP
Controller.
Bad Return
Air Sensor
RaTpAlm Binary
Output Alarm that indi-
cates
a failure in the Re-
turn Air Sensor.
Title 24
Economizer
Feedback
T24EcFb Analog
Output
Current position
of feedback from
Economizer
actuator.
Title 24
Sensor Alarm
T24TpAlm Binary
Output Outside Air
or Supply Air
Temperature Sen-
sor is shorted or
missing.
Title 24 Not
Economiz-
ing When It
Should
T24NEWS Binary
Output Economizer is
enabled but not
following the
desired Econo-
mizer position
commanded.
Title 24
Economiz-
ing When It
Should Not
T24EWISN Binary
Output Economizer is
not enabled but
the feedback
signal indicates
a position more
open than the
minimum.
Title 24
Damper
Failure
T24DpAlm Binary
Output Economizer is
enabled but not
within 10% of
desired posi-
tion within 150
seconds.
Title 24 Ex-
cess Outdoor
Air
T24ExsOA Binary
Output Economizer
feedback is lost or
Economizer is not
following com-
manded position.
Appendix D - VCM-X WSHP (Coil) LON Parameters
Revised 7/8/14