Installation & Operation Manual - Model AVC4000
Contents of this Manual are Subject to Change Without Notification
Page 32
AVC4000 BACnet Points List
Object I.D.
Description
PV
Units
Reference
DExxx
Device Object
x
AI1
Airflow Volume
R
Volume
AI2
Airflow Volume Setpoint (
Hardware Physical Input AI-1)
R
Volume
Note 4
AI3
Valve Position Feedback
R
%
AI7
Flash Writes Remaining
R
AI8
Airflow Volume Setpoint to Control Loop
R
Volume
AV1
BACnet Airflow Volume Setpoint
W
Volume
Note 5
AV2
Unsubscribed COV Interval
W
Seconds
AV3
Airflow Volume Setpoint Offset
W
Volume
AV4
Airflow Volume Measurement Adjust
W
%
AV5
Airflow Volume Range Minimum Limit
W
Volume
AV6
Airflow Volume Range Maximum Limit
W
Volume
AO1
Valve Actuator Command Position
C
%
BV2
Write to Flash
W
Note 1
MSI1
DI states 1..4
R
MSI2
Mode Selector: 1=AI2, 2=MSI1, 3=AV1
R
Note 3
MSI3
Airflow Volume Units: 1=CFM, 2=CMS, 3=CMM,4=CMH, 5=LPS, 6=LPM
W
Note 1
: Writing a value of (1) to the BACnet Object BV2 will cause the controller to copy
the active configuration stored in volatile (RAM) memory and write it to nonvolatile
(Flash memory). Nonvolatile Flash memory has a limited number of Lifetime Write
Cycles. Reference Section 7.1.1 for details.
Note 2
: The AVC control module includes a USB port and an optional Bluetooth
transceiver to provide local connectivity for configuring the AVC using the PC based
software tool “Insight”. For BACnet
operation, the PC USB and/or Bluetooth must be
disconnected from the AVC controller to avoid communication conflicts.
Note 3
: The AVC4000 Controller can operate in 3 different control modes, each of which
is briefly described below. BACnet object MSI2 is provided to identify which mode the
controller is operating in. This information is important because many of the BACnet
objects are mode-dependent.
MSI2=1:
Setpoint mode using the controllers analog input (AI-1) to provide the airflow
volume setpoint. BACnet object AI2 provides this value.
MSI2=2:
Setpoint mode using the controllers dry contact inputs (DI-1, DI-2) to provide
up to four different airflow volume setpoints. BACnet object MSI1 provides the dry
contact input states.
MSI2=3:
Setpoint mode using BACnet object AVI to provide the airflow volume setpoint.
Note 4
: Object is invalid when operating in BACnet setpoint mode when MSI2=3.
Note 5
: Object is invalid when operating in AI setpoint mode when MSI2=1.
