Carrier WTC-L-307 - LON Communications and Addressing; LON Device Addressing

9
ENGLISH
6. Communications wiring (LON)

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con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 device addressing
TheLONNeuronIDmustbecollectedtoll
in the network planning document.
Thecontrollercanbeidentiedbythe
Neuron ID by pressing the Service Pin button
or by entering manually the Neuron ID
number visible on stickers.
Remove one of the stickers from the WTC faceplate
and glue it on the building map for further
commissioning.
Figure 2: X7 LON Communications wiring
LON Network
X7 on Controller 1
X7 on Controller 2
To Next Controller
(1) N/A
(2) LON2
(3) LON1
(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
(in bus topology)
1400 m (for 22 AWG)
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
Figure 3: LON Service Pin button