Comm5 UCMs
BMTW-SVN01F-EN 143
communicate with a Tracer Summit BAS by using Comm5, Trane’s
implementation of LonTalk
®
communications protocol. The controller con-
forms to the LonMark™
Space Comfort Controller (SCC) profile and
interfaces to Tracer Summit through the SCC object. System coordination
of the Tracer VV550/551 controllers and their associated air handler is
accomplished with the new VAV air system (VAS) application designed
specifically for Comm5 controllers.
Generic LonTalk
®
Devices
LonTalk
®
devices support LonTalk
®
protocol but do not meet the Lon-
Mark
™ profiles that Tracer Summit software supports, such as SCC or
DAC. However, LonTalk
®
devices can be connected to Tracer Summit as
Generic LonTalk
®
Device (GLD) objects. GLDs must support LonMark™
standard network variable types (SNVTs). The BCU integrates these
devices into Tracer Summit by mapping SNVTs to standard BACnet
objects (AIP, AOP, BIP, BOP). These BACnet objects can then be used in
various Tracer Summit applications, such as TOD scheduling, graphics,
and CPL programs.
The BCU gets the information it needs for mapping SNVTs to standard
BACnet objects from an external interface file (XIF). You will need to
transfer this information to the Tracer Summit PC Workstation. The XIF
file is supplied by the manufacturer of the generic LonTalk
®
device.
Generic LonTalk
®
devices include: variable frequency drives (VFDs),
meters, occupancy sensors, actuators, and I/O modules. Typically, these
devices will be pre-configured by the original equipment manufacturer.
For detailed information about generic LonTalk
®
devices and how they
operate in Tracer Summit, refer to Tracer Summit Connections to Non-
Trane LonTalk
®
Devices (BAS-PRB003-EN).
Type of Communication Card: Comm5
Refer to “Comm5 Card” on page 52.
Wiring Notes
To establish wiring connections between UCM and the BCU, Trane
requires that you use the communication-link wiring specified in this
manual. For wire selection specifications, see “Communication-Link
Wire” on page 54.
To connect communication wiring:
1. Attach one end of the communication-link wiring to TB2 on the BCU.
For the location of TB2 (refer to Figure 16 on page 47).
2. Attach the other end of the communication-link wiring to the UCM or
the LonTalk
®
device at the appropriate terminal. For UCM connec-
tion points, refer to Trane’s installation, operation, and maintenance
manuals for Comm5 UCMs or the manufacturer’s literature for the
appropriate device.
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