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14 January 2021, SmartScanIS User’s Guide for Union Pacific, EUD-2016026-00 Rev.2
9
Wire from the terminal block to the appropriate terminal blocks on the Surge Protection
Subassembly.
10
If this is a single-track site, go to
8.9 Telephone
.
11
If this is a double-track site:
a
Repeat steps
1
through
9
on the second track.
The wires from track2 are connected to the rightmost SmartScanIS enclosure.
b
Go to
8.9 Telephone
.
8.9 Telephone
Not all sites have telephone service. When present, there is one telephone line per site. If
your site doesn't have telephone service, skip this section and go to
8.10 Shielded
Temperature Probe
.
The telephone service provider should terminate their drop on a lightning arrester terminal on
the service pole. From the lightning arrester block, run a four-wire service cord to the
bungalow and route it to the Surge Protection Subassembly (in the SmartScanIS enclosure).
At double-track sites, the service cord is routed to the leftmost SmartScanIS enclosure.
On the Surge Protection Subassembly (in the SmartScanIS enclosure), the UTB labeled
TelCo
is for the telephone line. This UTB protects the SmartScanIS from transients and
surges, which can be induced onto external wiring by lightning. The UTB has four rows of
connectors. The wires from the incoming telephone line are terminated at the third row of
connectors from the top. The second row from the top is wired at the factory. The green wire
of the incoming telephone line is terminated on the left. The red wire is terminated on the
right. The other two telephone wires (yellow and black) aren't required for the SmartScanIS.
At double-track sites, a telephone line is connected to just one SmartScanIS enclosure. That
means that only the SmartScanIS enclosure connected to the phone line can be
communicated with remotely. However, each SmartScanIS enclosure can still be
communicated with locally.
Red
Green
Red
Green
Summary of Contents for SmartScanIS
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