3-9
95-8533
18.2
types can degrade system operation.
If necessary, consult factory for further
suggested cable types.
NOTE
Cables designed to ISA SP50 Type A or IEC
61158-2 Type A are suitable for use in LON/
SLC wiring. For armored version, contact cable
manufacturer.
1. Remove the cover from the Network
Extender enclosure.
2. Connect 24 Vdc power lead wires and
communication network cable to the
terminal block. (See Figure 3-2 for terminal
location and Figure 3-3 for terminal
identification).
See Table 3-8 to determine maximum wiring
length.
COM 1 - Communication network connections:
Connect to COM 2 terminals of the
next device on the loop, A to A and B
to B.
COM 2 - Communication network connections:
Connect to COM 1 terminals of the
previous device on the loop, A to A
and B to B.
24 Vdc - Connect the "+" terminal to the
positive side of the 24 Vdc power
source. (Both "+" terminals are
connected internally.)
Connect the "–" terminal to the
negative side of the 24 Vdc power
source. (Both "–" terminals are
connected internally.)
Table 3-7—LON Maximum Cable Lengths
Note: *Use the same type of cable in each wiring
segment between network extenders.
**Maximum wire lengths represent the linear
wire distance of LON communications wiring
between network extenders.
Be sure that selected cable meets all job
specifications, indoor, outdoor and direct
burial.
If necessary, consult factory for further
suggested cable types.
Table 3-6—Typical Specication for 16 AWG (1.5 mm
2
) LON Wiring Cable per Echelon
Minimum Typical Maximum Units Condition
DC Resistance, each conductor 14 14.7 15.5 ohm/km 20 C per ASTM D 4566
DC Resistance Unbalanced 5% 20 C per ASTM D 4566
Mutual Capacitance 55.9 nF/km per ASTM D 4566
Characteristic Impedance 92 100 108 ohm 64 kHz to 1 MHz, per ASTM D 4566
Attenuation 20 kHz 1.3 dB/km 20 C per ASTM D 4566
64 kHz 1.9
78 kHz 2.2
156 kHz 3
256 kHz 4.8
512 kHz 8.1
772 kHz 11.3
1000 kHz 13.7
Propagation Delay 5.6 nsec/m 78 kHz
Length: 6,500 feet/2000 meters maximum (basic loop or between Network Extenders).
Type: Single twisted pair .
W ire Gauge: 16 AWG, stranded (19 x 29), tinned copper with overall shield.
Cables meeting these specifications are good for up to 2000 meters.
T0049B
Length: 6,500 feet/2000 meters maximum (basic loop or between Network Extenders).
Type: Single twisted pair.
Wire Gauge: 16 AWG, stranded (19 x 29), tinned copper with overall shield.
Cables meeting these specications are good for up to 2000 meters.
LON Cable Maximum Length**
(Manufacturer and Part No.)* Feet Meters
Belden 3073F (Tray Rated) 6,500 2,000
Det-Tronics NPLFP 6,500 2,000
Technor BFOU 4,900 1,500
Rockbestos Gardex Fieldbus
1 Shielded Pair, 16 AWG,
Type TC, p/n FB02016-001 6,500 2,000
1 Shielded Pair, 18 AWG,
Type TC, p/n FB02018-001 6,500 2,000
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