www.DaikinApplied.com 119 IOM 1207-6 • TRAILBLAZER
®
MODEL AGZ CHILLERS
The pump VFD can be integrated to a BAS via BACnet
®
MS/TP, LONWORKS
®
or Modbus network protocols. The
appropriate MicroTech
®
III communication module must be
selected as a factory-installed option on the AGZ-E chiller. The
VFD pump controller ships from the factory with an attahed
communication card that matches the communication module
selected with the chiller. The pump VFD controller is a native
BACnet protocol device. The VFD controller comes with an
additional communication card for Modbus and LonWorks.
Note that while BACnet IP is oered as a factory-installed
option on the AGZ-E chiller, BACnet IP is not oered on the
VFD frequency converter. If a chiller unit is ordered with
BACnet IP, the VFD will be provided with BACnet MS/TP.
Network parameters are set using the VFD controller graphical
interface. The following sections describe the parameters
that are required to enable communications from the VFD
pump directly to the BAS via BACnet MS/TP, LONWORKS, or
Modbus. Selecting a specic communication protocol changes
various default parameter settings to match that protocol’s
specications along with making additional protocol-specic
parameters available from the BAS.
VFD Network Integration
Use the VFD controller’s graphical interface to set unit
parameters and factory defaults for unit setpoints. Network
conguration involves: 1) selecting the Control Protocol for
BACnet, LONWORKS, or Modbus, and 2) then setting the
specic network parameters as required by each protocol.
The comprehensive set of network parameters available from
the VFD pump to the BAS (i.e. point lists) are provided in
separate AGZ-E VFD Pump Controller Operations Manuals
for each protocol. These point lists can be found on www.
DaikinApplied.com in MicroTech
®
III Controls literature. For
questions regarding the VFD pump operation and set up,
please contact the chiller Technical Response Center (TRC).
NOTE: AGZ-E chiller VFD controllers support only BACnet
MS/TP, LONWORKS, and Modbus communications.
Daikin Applied does not support other protocol
options that may be oered by the VFD manufacturer.
BACnet MS/TP Communication
1. Set the basic BACnet MS/TP network parameters using
the VFD graphical interface. These BACnet parameters
are described in Table 48. It is recommended that
additional parameters available in menu 8-* should
remain at factory defaults. See VFD installation manual
for further details (available on www.DaikinApplied.com).
2. Cycle power to the VFD controller for changes to take
eect.
3. The VFD controller is now ready for network
conguration from the BAS. Refer to the BACnet
Operations Manual for the AGZ-E VFD Controller, which
is available on www.DaikinApplied.com, for a complete
points list and additional conguration information.
Table 82: BACnet MS/TP Network Conguration Parameters
Parameter Setting for BACnet; Note Default Value
8-02 Control Source
Option A [3]; During initial power-up, the frequency converter
automatically sets this parameter to Option A [3] if it detects a valid
eldbus option installed in slot A
FC Port [1]
Note: This parameter cannot
be adjusted while the motor is
running.
8-30 Protocol BACnet Digital and control word
8-31 Address 0-127; This value must be unique throughout the MSTP trunk FC RS485
8-32 Baud Rate
9600/19,200/38,400/76,800 baud;
All devices on the MSTP trunk must be set to the same baud rate
9600 baud
8-70 BACnet Device
Instance
0-4194304; This value must be unique throughout the entire
BACnet network.
1
8-72 MS/TP Max Masters 1-127; Dependent on the Number of Masters in the system 127
8-73 MS/TP Max Info
Frames
1-65534; Denes how many info/data frames the device is allowed
to send while holding the token
1
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