7-4
Installing a Router
Proper electrical termination is essential for each twisted pair channel. Failure to
terminate the network will degrade performance and in some cases eliminate a node’s
ability to communicate to other nodes. For TP/XF and TP/RS485 channels, the
terminator circuits shown in figure 7.2 should be used. The terminators provided with
the LonBuilder and NodeBuilder
™
TP/XF kits also may be used. See the
L
ON
W
ORKS
FTT-10 Free Topology Transceiver User's Guide
for information on terminating a free
topology network; see the
L
ON
W
ORKS
LPT-10 Link Power Transceiver User's Guide
for
information on terminating a link power network.
59 Ohms
1%
340 Ohms
1%
.15
µ
F
10%
.33
µ
F
10%
102 Ohms
1%
120 Ohms
5 %
Alternate for TP/RS485 only.
All resistors metal film.
All capacitors metal/polyester.
TP/XF-78, TP/XF-1250,
and TP/RS485
Figure 7.2
Network Termination Circuits for TP/XF and TP/RS485 Networks
Connecting Power
Once the router is physically attached to the desired channels, power must be supplied.
Power is supplied to the Model 71000 L
ON
W
ORKS
Router via the power input connector
on the side of the router. The router may be ordered with a wall-mount power supply,
or you can create your own. Four power supply options are available for the router,
depending on the country for which the router is intended. These are USA/Canada,
United Kingdom, Continental Europe, and Japan. The output voltage is a nominal
+9VDC at 500mA. The following table describes the basic characteristics of the four
power supply types.
Table 7.1
Power Supply Characteristics
Country or
R e g i o n
Nominal
Input
V o l t a g e
Input range
nominal
±
10%
Frequency Input connector
E c h e l o n
Model #
USA/Canada
120 VAC
108-132 VAC
60 Hz
2-prong, NEMA 1-15P
78010
Japan
100 VAC
90 - 110 VAC
50/60 Hz
2-prong, NEMA 1-15P
78040
U.K.
240 VAC
216 - 264 VAC
50 Hz
3-prong, U.K. Plug
78030
Europe
220 VAC
198 - 242 VAC
50 Hz
2-prong, Euro Plug
78020
Summary of Contents for LONWORKS
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