Communications Wiring (Lon); Lon Device Addressing - Carrier WTC-B-207 Installation Instructions Manual

6. Communications wiring (LON)

WTC-207-L / WTC-307-L
The recommended cable type for LON
communications is 0.5 mm², twisted pair,
unshielded. The LonWorks communication
wire is polarity insensitive and can be laid
out in a bus, star, loop or free topology. For
loop topology, polarity is important, special
care must be taken when connecting the
LonWorks network to avoid a short circuit.
It is recommended to use the bus
■
topology network confi guration for all
LonWorks communication wiring, as it
allows for easy network troubleshooting.
Connect both wires to the LON terminals
■
of the controller. If inserting multiple
wires in the terminals, make sure that
wires are properly twisted together prior
to inserting them in the terminal
connectors.
It is important to use proper network
■
terminators depending on the type of
network topology used. Failure to do so
LON Network
To Next Controller
Figure 2: X7 LON Communications wiring
X7 on Controller 1
(1) N/A
(2) LON2
(3) LON1
X7 on Controller 2
(1) N/A
(2) LON2
(3) LON1
may result in communication errors
between controllers.
Characteristics
Communication support type TP/FT-10.
22 AWG (Ø0.65mm) or 16 AWG (Ø1.3mm),
1 twisted pair (1P), stranded conductor (STR),
tinned copper (TNC), PVC insulation, PVC
jacket, unshielded, plenum FT6, CSA 600V,
UL 300V
Max/ length 1400 m (for 22 AWG)
(in bus topology) or 2700 m (for 16 AWG).
For a bus topology, two network terminators
are required (one at each end of the bus
topology channel):
R1 = 105Ω, ±1%, 1/8W
C1 = 100μF, ≥50V
C2 = 100μF, ≥50V

LON device addressing

The LON Neuron ID must be collected to fi ll
in the network planning document.
The controller can be identifi ed by the
Neuron ID by pressing the Service Pin button
or by entering manually the Neuron ID
number visible on stickers.
Figure 3: LON Service Pin button
Remove one of the stickers from the WTC faceplate
and glue it on the building map for further
commissioning.
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