IOM 1207-6 • TRAILBLAZER
®
MODEL AGZ CHILLERS 120 www.DaikinApplied.com
LON-WORKS Communication
This following section assumes you are using a LONWORKS
Option Card in conjunction with the AGZ-E pump package
frequency converter (see Figure 93, LONWORKS Connection).
The LONWORKS Option Card is LonMark 3.4 certied. It is
designed to communicate with any system complying with the
FTT-10A and 78kbps LONWORKS standard. Familiarity with
this technology is assumed.
The LONWORKS communications structure is similar to
that of a local area network (LAN) in that messages are
continually exchanged between a number of processors. A
LONWORKS system is a local operating network (LON). LON
technology oers a means for integrating various distributed
systems that perform sensing, monitoring, control, and
other automated functions. A LON allows these intelligent
devices to communicate with one another through a variety
of communications media using a standard protocol. LON
technology supports distributed peer-to-peer communications.
Individual network devices can communicate directly with one
another without the need for a central control system.
Data are transported by means of standard network variable
types (SNVTs) which provide the interface for communication
between devices from dierent manufacturers. LONWORKS-
dened functional proles determine the functionality and
network variables for a particular family of devices (e.g.
frequency converters, pumps etc.) are also available and
supported by the LONWORKS option.
The VFD controller typically does not involve network
addressing to enable BAS communication. However, there
are several basic steps required for LONWORKS integration
which are described in the following section. Additionally, the
available network parameters are available via the graphical
interface as shown in Table 83.
Figure 93: LONWORKS Connection
Light Emitting Diodes (LEDs)
Two LEDs indicate communication activity and status of the
LonWorks Option Card. These indicators can be seen when
the LonWorks Option Card is connected to the VFD pump
controller. Descriptions of the Service LEDs are summarized in
Table 84.
Service Pin Switch
The service pin generates a service-pin message that contains
the Neuron® ID and the program code identication of the
node. A service-pin message is a network message that is
generated by a node and broadcast on the network. It can be
used to commission the VFD controller to the LONWORKS
network. The service pin switch is located on the lower right-
hand corner of the LonWorks Option Card. See Figure 93 for
location of the service pin.
1. Commission the VFD controller by pressing the service
pin (see Figure 93). Doing so generates a service-
pin message, which is broadcast on the network
and contains the Neuron ID and the program code
identication of the node.
2. Cycle power to the unit controller after 1) commissioning
a device, 2) de-commissioning an existing device, and 3)
subsequent re-commissioning of an existing device.
3. Review the LONWORKS network parameters as
described in Table 83. It is recommended that remaining
items in menus 8-* and 11-* remain at factory defaults.
See VFD installation manual available on www.
DaikinApplied.com for further details.
4. Verify connection from VFD to BAS - terminals 79 (Net A)
and 80 (Net B) on top of LONWORKS Option Card. See
Figure 93 for terminal locations.
5. The VFD controller is now ready for network
conguration from the BAS. Refer to the LONWORKS
Operations Manual for the AGZ-E VFD Controller,
available on www.DaikinApplied.com, for a complete
points list and additional conguration information.
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